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  • AELO | Global Earthquake Model Foundation

    Projects AELO ASCE Earthquake Loads Overseas (AELO) Versión en español English version Share Facebook X (Twitter) LinkedIn Overview Background The project is carried out within a collaboration between GEM and the U.S. Geological Survey (USGS) and is sponsored by the U.S. Department of State (DoS) and the U.S. Department of Defence (DoD). The aim of the project is to provide a web service for computing design ground motions (on rock and soil) that are compliant with the ASCE guidelines (ASCE 7-16, ASCE 41-17, ASCE 7-22, ASCE 41-23) for 500 locations worldwide. In its inaugural year, AELO focuses on rigorously calculating seismic parameters, including Peak Ground Acceleration (PGA), Ss, and S1 design values across 500 diverse global locations, particularly emphasizing rock site conditions. This aims to ensure compliance with ASCE7-16 and ASCE41-17 standards, essential for seismic assessment and design practices. In the following year, the project progresses to establish a secure webservice for computing design ground motions. This password-protected platform will provide access to ASCE7-16 and ASCE41-17 aligned calculations, simplifying access to these critical seismic design parameters. Transitioning into the third year, AELO expands its computational scope to encompass ground motion calculations across various soil conditions worldwide, encompassing 500 locations to adhere to ASCE 7-22 and ASCE 41-23 standards. This phase seeks to enhance the breadth of seismic assessments, offering a comprehensive understanding of seismic hazards on diverse soil types. Finally, in its fourth year, the project concludes with the introduction of a sophisticated, password-protected webservice. This platform offers the capability to compute design ground motions based on the latest ASCE7-22 and ASCE41-23 standards, supporting seismic engineers and researchers globally by providing accurate, standardized, and essential seismic design parameters for diverse geographical locations. Duration: 2022 - 2026 Objectives The primary objective of the project is to create a web service capable of calculating design ground motions, both on rock and soil, in adherence to the American Society of Civil Engineers (ASCE) guidelines. These guidelines include ASCE 7-16, ASCE 41-17, ASCE 7-22, and ASCE 41-23. This web service heavily relies on the hazard models that are part of GEM’s global mosaic and the OpenQuake Engine. Collaborators GEM, the U.S. Geological Survey (USGS), with support from the U.S. Department of State (DoS) and the U.S. Department of Defense (DoD). Location Global (Washington DC, USA)

  • SSAHARA Project | Global Earthquake Model Foundation

    Projects SSAHARA Project Sub Saharan Hazard and Risk Assessment (SSAHARA) Versión en español English version Share Facebook X (Twitter) LinkedIn Overview Outcomes Training Outreach Photos Publications Background The East African Rift System (EARS) is the major active tectonic feature of the Sub-Saharan Africa (SSA) region. Although the seismicity level of such a divergent plate boundary can be described as moderate, several damaging earthquakes have been reported in historical times, and the seismic risk is exacerbated by the high vulnerability of the local buildings and structures. Formulation and enforcement of national seismic codes is therefore an essential risk mitigation strategy. A reliable risk assessment must be based on an updated and reliable seismic hazard model for the region. The last published regional model for SSA was developed within the frame of the GSHAP project and is almost 20 years old (Midzi et al., 1999). The availability of new data, local and regional seismotectonic studies and recently developed methods and tools prompt the development of a new PSHA model summarizing the current state of knowledge in Sub-Saharan Africa. Objectives In September 2014, the United States Agency for International Development (USAID) GEM funding support to implement a program entitled “Reducing Earthquake Risk collaboratively by Building Capacity and Leveraging GEM’s Open Tools and Resources”. One of the objectives of this program was: to build the capacity in sub-Saharan Africa for integrated risk assessment and development of city earthquake scenarios involving local decision-makers. The project produced the SSA-GEM homogenized catalogue; the Seismic Source Zones; the Probabilistic Hazard Calculations; the Strain Rate Model; earthquake risk in East Sub-Saharan Africa; the residential building stock; and the Social Vulnerability and Integrated Risk in Sub Sahara Africa. Collaborators The development of a regional model would not have been possible without the contribution of experts from the local scientific community. Partnership with local governmental institutions and authorities was an essential step to facilitate model acceptance and for potential integration with national seismic codes. GEM worked with the following institutions for the implementation of the SSAHARA project. African Union; AfricaArray; FEPRA – Ethiopia; University of Pennsylvania; Addis Ababa City Government; UNDP Regional Office; and international agencies, municipalities and government agencies Location Burundi, Ethiopia, Kenya, Malawi, Mozambique, Rwanda, Tanzania, Uganda Website SSAHARA wiki website containing technical descriptions and overview of the project. News Preventionweb article on the release of the Africa Model developed as part of the Sub-Sahara Hazard and Risk Assessment (SSAHARA) project funded by USAID. Disclaimer The contents of this project website such as studies, reports, audio-visual, news articles, blogs, and other information or media products including those in the external links are made possible by the generous support of the American people through the United States Agency for International Development (USAID). The contents are the responsibility of the Global Earthquake Model (GEM) Foundation and do not necessarily reflect the views of USAID or the United States Government.

  • CRAVE | Global Earthquake Model Foundation

    Projects CRAVE Collaborative Risk Assessment for Volcanoes and Earthquakes (CRAVE) Versión en español English version Share Facebook X (Twitter) LinkedIn Overview Outcomes Training Outreach Photos Publications Summary The need to better understand the existing earthquake and volcano risk led to the establishment of the Global Earthquake Model (GEM) and the Global Volcano Model (GVM) network. GEM, founded in Italy in 2009, has been developing open tools and models to calculate and communicate seismic hazard and risk worldwide. Similarly, the GVM network represents an international community aiming to provide systematic evidence, data and analysis of volcanic hazards and risk on national, regional and global scales working with monitoring institutions to implement the best science and DRR strategies. Both GEM and the GVM network are currently leading international efforts that aim to mitigate the adverse effects from these perils. South America and ASEAN regions have been the target of numerous studies in the last two decades. However, most of these studies only focused on one component of the risk problem (e.g. hazard, vulnerability). Such limitation prevents the development of a comprehensive risk profile to properly inform decision-makers. The CRAVE project, through the current GEM and GVM network tools will offer a timely and unique opportunity to advance the understanding of seismic and volcanic risk in the region. Objectives This project aims to develop a common framework for the assessment of the impact from earthquakes and volcanoes, with an application in three countries located around the Pacific Rim. The activities comprised in this project feature several events to bring together global partners with the mandate to calculate and communicate seismic and volcanic risk, as well as training events to increase the capacity of local institutions in the assessment of their hazard and risk. Collaborators This project includes several partners including the following: British Geological Survey; the Earth Observatory of Singapore (EOS); the University of Edinburgh; the Volcano Disaster Assistance Program (VDAP) of the United States Geological Survey (USGS); and key organizations from the region including: the Colombian Geological Survey; the Philippine Institute of Volcanology and Seismology;(PHIVOLCS); and Badan Geologi (Indonesia). Location Colombia, Indonesia and the Philippines Volcano Scenario tool for OpenQuake The CRAVE project required the implementation of a new calculator in the OpenQuake Engine called ‘multi_risk’, which is able to manage at the same time different types of hazards, specifically ash fall, pyroclastic density currents flow, lava flow and lahar flow, passed as CSV files with headers ‘lon’, ‘lat’, ‘intensity’. The calculator is also able to consider the difference between dry and wet ash by setting the `ash_wet_amplification_factor` parameter in the job.ini file. The output of the calculator is a CSV file with ‘Exposure + Risk’ fields. For convenience we also produced a ‘Total Risk’ output which is simply the sum over the assets of the values in the ‘Exposure + Risk’ output. In order to support other formats used in the volcanic hazard community we prepared tools to convert hazard footprints into the format accepted by the OpenQuake-engine. These tools were included in the Input Preparation Toolkit. [Software ] Volcano Model example Full example of the volcano model developed with the Servicio Geológico Colombiano (SGC). [Data ] OpenQuake Volcano Risk Assessment OpenQuake for volcano risk assessment? Yes! Now you can perform volcanic scenarios. Checkout our tutorial! [Video ] Introduction The presentation of the tools and datasets from CRAVE took place in Bogota (Colombia) and Bandung (Indonesia). These events were organized by the Colombian Geological Survey and the Institute of Technology of Bandung. Kick-off Meeting The kick-off meeting took place in Bogota at the offices of the Colombian Geological Survey (SGC) on the 22nd of February 2018. During the meeting the goals of the CRAVE project were presented by GEM, as well as some concepts on seismic hazard, vulnerability and risk modelling. The British Geological Survey (BGS) presented general aspects of volcano hazard modelling and the mission of the Global Volcano Model, the SGC demonstrated how three volcanoes are currently being monitored and how seismic hazard maps have been developed in the past and the Rabaul Volcano Observatory (RVO) presented the current situation in terms of volcano hazard monitoring and assessment in Papua New Guinea. During this event all partners also discussed the way forward, including the division of tasks, case studies, relevant risk outputs and the timeframe for the next workshops. Bandung, Indonesia (20-22 of May) Workshop – IT Bandung With support from the Institute of Technology of Bandung (ITB), the event featured a day of presentations and discussion with representatives from the Center for Volcanology and Geological Hazard Mitigation (CVGHM), the Indonesian Ministry of Public Works, the National Disaster Management Agency (Badan Nasional Penanggulangan Bencana - BNPB), the Meteorology, Climatology and Geophysics Agency (Badan Meteorologi, Klimatologi dan Geofisika - BMKG), the Philippine Institute of Volcanology and Seismology (PHIVOLCS) and the British Geological Survey (BGS). Bogota, Colombia (13-17 of May) Workshop - Geological Survey of Colombia Five days in Bogota provided a fruitful time to share and discuss the national volcanic hazard and risk assessment, as well as risk management challenges in the country. The workshop was divided into two main parts: The first part focused on the technical aspects of volcanic hazard and risk assessment. Representatives from the three mains national volcanological observatories participated in the sessions (Manizales, Popayan and Pasto). The second part of the workshop was conceived for a broader audience, involving stakeholders that contribute to the Disaster Risk Reduction strategy in the country. CRAVE project kicks off in Colombia The USAID project – Collaborative Risk Assessment for Volcanoes and Earthquakes or CRAVE successfully kicked off with a workshop in Bogota, Colombia. [News ] CRAVE in Colombia and Indonesia Members of the USAID-supported project – CRAVE from Colombia and Indonesia participated in two separate workshops to discuss volcanic threats and risks. [News ] CRAVE workshop, Bandung, Indonesia Workshop at IT Bandung exploring open tools and models for #earthquake and #volcano #hazard and #risk assessment with project partners. [Social Media ] BUSINESS NEWS CRAVE project workshops held in Bogota, Colombia 1/3 BUSINESS NEWS CRAVE project workshops held in Bandung, Indonesia 1/5 CRAVE Project Final Report Final Report to USAID/OFDA for: CRAVE-Collaborative Risk Assessment for Volcanoes and Earthquakes [Report ] Disclaimer The contents of this project website such as studies, reports, audio-visual, news articles, blogs, and other information or media products including those in the external links are made possible by the generous support of the American people through the United States Agency for International Development (USAID). The contents are the responsibility of the Global Earthquake Model (GEM) Foundation and do not necessarily reflect the views of USAID or the United States Government.

  • EU DRR | Global Earthquake Model Foundation

    Projects EU DRR Regional risk modelling and scenario analysis for EU Member States - Seismic risk analysis and exposure data Versión en español English version Share Facebook X (Twitter) LinkedIn Overview Background This project supports the World Bank Technical Assistance project "Economic Analysis of Prevention and Preparedness in European Union Member States and Countries under EU Civil Protection Mechanism". The GEM Risk Team provides exposure and probabilistic seismic risk assessments for the 27 EU member states and 6 participating states, building upon the EFEHR ESHM20 hazard and ESRM20 exposure datasets [insert link ], adding educational and healthcare building stock, and forecasting exposure to 2050. Further, retrofitted vulnerability curves are derived to inform the seismic impact analyses and a cost-benefit analysis. Duration: 2020-2021 Objectives The project is conducted in collaboration with the European Commission’s (EC) Directorate-General for European Civil Protection and Humanitarian Aid Operations (DG ECHO). The objectives of this project are to: 1. Provide regionally-consistent probabilistic seismic risk metrics across Union Civil Protection Mechanism (UCPM) countries for population and selected structure types, to inform macro-economic analysis that is to be conducted by the World Bank project team. 2. Provide seismic impact analysis for two selected earthquake scenarios with and without specified DRM intervention, to estimate the impact of that intervention on i) loss due to direct damage and ii) fatalities. This will contribute to cost-benefit analysis of EU-funded DRM investments conducted by the WB project team using the Triple-Dividend framework. Collaborators GEM Foundation Funding partner: World Bank Group Locations EU Member States

  • READY2RESPOND | Global Earthquake Model Foundation

    Projects READY2RESPOND Rapid Diagnostic in Uttarakhand and Himachal Pradesh Versión en español English version Share Facebook X (Twitter) LinkedIn Overview Background Ready2Respond (R2R) is a rapid diagnostic guide, designed to improve national, sub-national and city resilience mechanisms and to protect development gains through investments in emergency preparedness and response systems. It is informed by the World Bank Group (WBG) City Resilience Program (CRP) and other WBG resilience platforms. In this project R2R is applied to the Uttarakhand and Himachal Pradesh states in the Himalayan region of India. The GEM Risk Team contributes to the project by providing: Literature review and stakeholder mapping around hazard and risk initiatives, risk data and models for both states Provision of seismic hazard/risk model outputs and related descriptive information for both states (to support diagnostic activities) Review of legal regulation of the built environment and associated initiatives Review of seismic preparedness of the critical infrastructure defined in the project Preparation and remote input into stakeholder workshops Duration: 2023 Objectives This project responds to the need to provide effective and comprehensive diagnosis of the Uttarakhand and Himachal Pradesh states’ emergency preparedness and response systems in the Himalayan region of India. This enables the World Bank and the government to tailor investments to strengthen institutional capacity and capability, ensure public safety, and limit economic disruption in the face of multiple, and often cascading, geological and hydrometeorological hazards. Collaborators GEM Foundation, JBA Consulting, Geo Climate Risk Solutions (GCRS) Funding partner: World Bank Group Location India Himalayas

  • Publications | GEM Foundation

    PUBLICATIONS Papers, articles and reports are released as part of GEM's advancing science & knowledge-sharing initiatives. Selected reports and other materials produced by the international consortia on global projects, working groups and regional collaborations can also be found below. Share Facebook X (Twitter) LinkedIn Featured Publications Development of a global seismic risk model ​ GEM Strategic Plan and Roadmap to 2030 ​ Improving Post-Disaster Damage Data Collection to Inform Decision-Making Final Report ​ Anchor 1 Publications List Filters: 147 results found ​ Sort by Title: A-Z Z-A List Gallery Title Reference Year Type Topic Loading... Earthquake Models: Jan 2021 Release (brochure) Type: Brochure The GEM (Global Earthquake Model) Foundation develops hazard and risk models for the calculation of human and economic losses due to earthquakes. These models are important for a wide range of risk management applications, including standards for the design of buildings and infrastructure, insurance/risk transfer, national risk assessments, as well as public risk awareness and education. Global building exposure model for earthquake risk assessment Type: Peer-reviewed The global building exposure model is a mosaic of local and regional models with information regarding the residential, commercial, and industrial building stock at the smallest available administrative division of each country and includes details about the number of buildings, number of occupants, vulnerability characteristics, average built-up area, and average replacement cost. We aimed for a bottom-up approach at the global scale, using national statistics, socio-economic data, and local datasets. This model allows the identification of the most common types of construction worldwide, regions with large fractions of informal construction, and areas prone to earthquakes with a high concentration of population and building stock. The mosaic of exposure models presented herein can be used for the assessment of probabilistic seismic risk and earthquake scenarios. Information at the global, regional, and national levels is available through a public repository (, which will be used to maintain, update and improve the models. Development of a global seismic risk model Type: Peer-reviewed The Development of a Global Seismic Risk Model was a mammoth undertaking that involved hundreds of people and for the first time presented a detailed view of seismic risk at the global scale. For some developing countries, this was the first time that a seismic risk map was produced, and the associated country profiles are being used by the local authorities. GEM Strategic Plan and Roadmap to 2030 Type: Brochure GEM was founded in 2009 with the purpose of improving the global knowledge of earthquake risk and contributing to the reduction of risk worldwide. In 13 years, GEM has become widely known for its global effort to improve the state of practice of earthquake hazard and risk assessment and for its contribution to improving the state of knowledge of earthquake risk. New Statistical Perspectives on Bath's Law and Aftershock Productivity Type: Peer-reviewed The well-established Bath’s law states that the average magnitude difference between a mainshock and its strongest aftershock is roughly 1.2, independently of the size of the mainshock. The main challenge in calculating this value is the bias introduced by missing data points when the strongest aftershock is below the observed cut off magnitude. Ignoring missing values leads to a systematic error, because the data points removed are those with particularly large magnitude differences ∆M. The error is minimized, if we restrict the statistics to mainshocks at least two magnitude units above the cut-off, but then the sample size is strongly reduced. This work provides an innovative approach for modelling ∆M by adapting methods for time-to-event data, which often suffers from incomplete observation (censoring). In doing so, we adequately account for unobserved values and estimate a fully parametric distribution of the magnitude differences ∆M for M ą 6 mainshocks. Results show that magnitude differences are best modeled by the Gompertz distribution, and that larger ∆M are expected at increasing depths and higher heat flows. A simulation experiment suggests that ∆M is mainly driven by the number and the magnitude distribution of aftershocks. Therefore, in a second study, we modelled the variation of aftershock productivity in a stochastically declustered local catalog for New Zealand, using a generalized additive model approach. Results confirm that aftershock counts can be better modelled by a Negative Binomial than a Poisson distribution. Interestingly, there is indication that triggered earthquakes trigger themselves two to three times more aftershocks than comparable A hybrid ML-physical modelling approach for efficient approximation of tsunami waves at the coast for probabilistic tsunami hazard assessment Type: Peer-reviewed This work investigates a novel approach combining numerical modelling and machine learning, aimed at developing an efficient procedure that can be used for large scale tsunami hazard and risk studies. Probabilistic tsunami hazard and risk assessment are vital tools to understand the risk of tsunami and mitigate its impact, guiding the risk reduction and transfer activities. Such large-scale probabilistic tsunami hazard and risk assessment require many numerically intensive simulations of the possible tsunami events, involving the tsunami phases of generation, wave propagation and inundation on the coast, which are not always feasible without large computational resources like HPCs. In order to undertake such regional PTHA for a larger proportion of the coast, we need to develop concepts and algorithms for reducing the number of events simulated and more rapidly approximate the simulation results needed. This case study for a coastal region of Japan utilizes a limited number of tsunami simulations from submarine earthquakes along the subduction interface to generate a wave propagation database at different depths, and fits these simulation results to a machine learning model to predict the water depth or velocity of the tsunami wave at the coast. Such a hybrid ML-physical model can be further coupled with an inundation scheme to compute the probabilistic tsunami hazard and risk for the onshore region. Exploring benefit cost analysis to support earthquake risk mitigation in Central America Type: Peer-reviewed We performed benefit-cost analysis to identify optimum retrofitting interventions for the two most vulnerable building typologies in Central America, unreinforced masonry and adobe, considering the direct costs due to building damage and the indirect costs associated with the injured and fatalities. We reviewed worldwide retrofitting techniques, selected those that could be applied in the region for these building types, and derived vulnerability functions considering the impact of each retrofitting intervention in the strength, stiffness, and ductility of the structures. Probabilistic seismic risk analyses were performed considering the original configuration of each building class, as well as the retrofitted version. We calculated average annual losses to estimate the annual savings due to the different structural interventions, and benefit cost ratios were estimated based on the associated cost of each retrofitting technique. Based on the benefit-cost analyses, for a 50-year time horizon and a 4% discount rate, retrofitting these building classes could be economically viable along the western coast of Central America. The adolescent years of seismic risk assessment Type: Peer-reviewed Vitor Silva reflects on the current position of seismic risk assessment compared to its hazard counterpart, and posits that this discipline is expected to become common practice in disaster risk management, providing decision makers with valuable information not just about the current threat, but also how the impact of future disasters is expected to evolve. The growth of seismic risk assessment into its adult years will allow a more efficient design and implementation of risk mitigation measures. ultimately contributing to its main and only goal: the reduction of the human and economic losses caused by earthquakes. Exposure forecasting for seismic risk estimation: Application to Costa Rica Type: Peer-reviewed This study proposes a framework to forecast the spatial distribution of population and residential buildings for the assessment of future disaster risk. The approach accounts for the number, location, and characteristics of future assets considering sources of aleatory and epistemic uncertainty in several time-dependent variables. The value of the methodology is demonstrated at the urban scale using an earthquake scenario for the Great Metropolitan Area of Costa Rica. Hundreds of trajectories representing future urban growth were generated using geographically weighted regression and multiple-agent systems. These were converted into exposure models featuring the spatial correlation of urban expansion and the densification of the built environment. The forecasted earthquake losses indicate a mean increase in the absolute human and economic losses by 2030. However, the trajectory of relative risk is reducing, suggesting that the long-term enforcement of seismic regulations and urban planning are effectively lowering seismic risk in the case of Costa Rica. Investment in Disaster Risk Management in Europe Makes Economic Sense Type: Report The physical, financial, and social impacts of disasters in Europe are growing and will continue to grow unless urgent actions are taken. In the European Union (EU), during the period from 1980 to 2020, natural disasters affected nearly 50 million people and caused on average an economic loss of roughly €12 billion per year (EEA, 2020). The impacts of flood, wildfire, and extreme heat are increasing rapidly, and climate damages could reach €170 billion per year according to conservative estimates for a 3 scenario unless urgent action is taken now (Szewczyk, et al., 2020). Earthquakes, while rare, have a devastating impact on the ageing buildings and infrastructure of Europe that were constructed prior to modern codes; in Bucharest, for example, nearly 90% of the population lives in multifamily buildings with pre-modern building codes3 (Simpson & Markhvida, 2020). Within the EU, the top-five countries with the highest annual average loss to earthquake are Cyprus, Greece, Romania, Bulgaria, and Croatia, and for floods the top-five countries are Romania, Slovenia, Latvia, Bulgaria, and Austria.4 However, disasters do not affect everyone equally: poor, elderly, very young, and marginalized populations are most affected and least able to recover. In Romania, Greece, Croatia, and Bulgaria, for example, the socio-economic resilience of the poor is on average less than 30% of the national average (World Bank, 2020). Moreover, the local and regional administrations in the poorer and more disadvantaged areas have the least capacity to design and implement resilience investments. Filter by publication type: Book chapter Conference paper Brochure Peer-reviewed Report User manual Reset 1 2 3 4 5 1 ... 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ... 15

  • OpenQuake | Global Earthquake Model Foundation

    openquake OpenQuake (OQ) - comprised of the engine, platform and tools - caters to a variety of users, from modellers and researchers to emergency planners - OpenQuake is used for a wide range of purposes for disaster risk reduction and management. OQ Data & Tools OQ Training OQ Tutorials OQ Engine OQ Platform Anchor 1 Get started with the OQ Engine: read on below or visit our OQ GitHub website . The OpenQuake Engine is the Global Earthquake Model Foundation’s (GEM) state-of-the-art, open-source software collaboratively developed for earthquake hazard and risk modelling. It runs on operating systems such as Linux, macOS and Windows; and can be deployed on laptops, desktops, standalone servers and multi-node clusters. The functionality to analyze hazard and risks at specific site, city, country or regional level makes the OpenQuake Engine a powerful and dynamic tool for assessing the potential impacts of earthquakes at any location in the world. Instructions For modellers, researchers, scientists and engineers 01 Download the latest user manual . 02 Download the latest version of the 03 Follow the installation guide here . OpenQuake Engine For developers 01 Follow the instructions here . Related Documentation OpenQuake engine manual OpenQuake engine installation guide OpenQuake Engine: An Open Hazard (and Risk) Software for the Global Earthquake Model OpenQuake Ground Motion Toolkit - UserGuide OpenQuake Hazard component testing procedures OpenQuake Hazard Modeller's Toolkit - UserGuide OpenQuake Underlying Hazard Science OpenQuake Underlying Risk Science Join the OpenQuake Forum Check OQ Engine's Project Status here. OpenQuake Engine Key Features HAZARD Classical PSHA*: hazard curves, hazard maps, uniform hazard spectra (UHS), disaggregation Event-based hazard : stochastic earthquake event sets and ground motion fields, hazard curves, hazard maps Scenario hazard: single event - stochastically generated ground motion fields ​ Additional features: 5 typologies for modeling seismic sources 100+ GMPEs implemented and tested Tools for harmonizing catalogs, creating seismogenic input files, analyzing strong motions and GMPEs ​ PHYSICAL RISK Classical PSHA-based: asset-specific loss exceedance curves, average annual loss, loss maps, building typology disaggregation ​ ​ Event-based risk: event loss tables, loss exceedance curves - asset specific and aggregated, average annual loss, loss maps, loss disaggregation Scenario hazard: loss statistics, loss maps ​ Scenario damage: collapse maps, damage distribution per asset and building typology Single software Combines hazard and risk in a single software Compatibility Compatible with various existing hazard, vulnerability and exposure models Calculations Calculates scenario and probabilistic hazard and risk analysis Different Scales Supports calculations at different scales Uncertainties Accounts for wide spectrum of uncertainties Typologies Large set of source typologies for modelling faults as well as distributed seismicity Logic Tree Logic tree support (representing epistemic uncertainty) Explicit Uncertainty Explicit representation of uncertainty, including separation of epistemic from aleatory Pre-computed data Runs risk calculations for precomputed hazard curves and ground motion fields OQ Engine Calculators and Outputs OQ Platform The OpenQuake Platform is a website that allows the community to explore, manipulate and visualize the datasets and models and to use tools that GEM produces. The platform also allows users to contribute, share and discuss new findings and results with the GEM community. Share your outputs - datasets, maps, models - to the GEM OpenQuake community through the Platform. The OpenQuake Platform hosts a number of national, regional and global models. Follow the instructions below to access data from GEM and the OQ community. For users who only need outputs such as datasets, layers or maps, you can simply register for free and browse the Platform for the data that you need. To start sharing your data, follow the instructions below. Sign in or register here . Click Layers > Upload Layers Create maps based on GEM’s existing datasets or create one based on your uploaded Layer. Click Maps > Create Maps Save and Publish your map to share with the OpenQuake community. To start browsing and downloading data, follow the instructions below. Sign in or register here . In the Search box, type the name of the map or dataset you’re looking for. Look for your item from the search results, click to Download. To customize or create your own maps, click Maps > Create Maps Click the Add Layer icon and select from the available layers from the dropdown list. Save and Publish your map. Download your map. Sign in Register Openquake: Tools and Data GEM works on a wide range of open-source source (software) tools to allow you to calculate, share and explore earthquake risk. Most of these are already embedded in the platform , but others are released as stand-alone applications. All 0 Software Building Classification Tool (v.2017) License: AGPL Version: ​ The 'Building classification tool' aims to create a detailed inventory of the most frequent building typologies in the world. Software Catalogue Toolkit (v.2018) License: AGPL Version: ​ Open source toolkit for the compilation and harmonisation of earthquake catalogues. Software GEM's IRMTK QGIS plugin (v.2020) License: AGPL Version: ​ This QGIS plugin allows users to drive OpenQuake Engine calculations of physical hazard and risk, and to load the corresponding outputs as QGIS layers. Software GMPE Strong Motion Modeller's Toolkit (v.2020) License: AGPL Version: ​ Python and OpenQuake-based Toolkit for Analysis of Strong Motions and Interpretation of GMPEs Software Glossary for GEM Taxonomy (v.2018) License: AGPL Version: ​ An online tool that explains around 400 terms contained in the GEM Building Taxonomy v 2.0 and nearly 700 images. Product Group Sub Product Group Product Type License Type Building Classification Tool (v.2017) Building Classification Tool (v.2017) Software AGPL Catalogue Toolkit (v.2018) Catalogue Toolkit (v.2018) Software AGPL GEM's IRMTK QGIS plugin (v.2020) GEM's IRMTK QGIS plugin (v.2020) Software AGPL GMPE Strong Motion Modeller's Toolkit (v.2020) GMPE Strong Motion Modeller's Toolkit (v.2020) Software AGPL Glossary for GEM Taxonomy (v.2018) Glossary for GEM Taxonomy (v.2018) Software AGPL Hamlet: Hazard Model Evaluation and Testing (v.2020) Hamlet: Hazard Model Evaluation and Testing (v.2020) Software AGPL Hazard Modeller's Toolkit (v.2020) Hazard Modeller's Toolkit (v.2020) Software AGPL IDCT Direct Observation Tool (v.2018) IDCT Direct Observation Tool (v.2018) Software AGPL OpenQuake TaxTweb Software AGPL OpenQuake OpenQuake Engine Latest Software AGPL OpenQuake Risk Input Preparation Toolkit Software AGPL OpenQuake OpenQuake Engine 3.11 Software AGPL OpenQuake Vulnerability Modellers ToolKit Software AGPL OpenQuake OpenQuake Platform Software AGPL Openquake OpenQuake Model Building Toolkit Software AGPL Risk Modeller's Toolkit (v.2020) Risk Modeller's Toolkit (v.2020) Software AGPL Sort by Order by View: Table Blocks 1 2 3 4 1 ... 1 2 3 4 ... 4 Openquake: Training The OpenQuake online training is designed for an audience with a diverse background and expertise and covers the main concepts of earthquake risk assessment, along with the basic features of the engine. The training activities have been tailored for beginner users, and are divided into four modules that cover different types of calculations using the OpenQuake-engine. ​Each module is approached from a technical and practical perspective. It includes a theoretical introduction, followed by step-by-step examples that help to consolidate the concepts, as well as exploring the OpenQuake tools for each type of calculation. ​ Modules Module I: OpenQuake introduction Module II: Earthquake scenarios Module III: Classical PSHA Module IV: Event-based analysis Openquake: Tutorials OQ Engine Video Tutorials on seismic hazard and risk analysis available in English and Spanish. English Español OpenQuake - Software Installation and Demos OpenQuake Introduction - A software for Seismic Hazard and Risk Assessment OpenQuake - Ground Motion Fields: Theoretical Background OpenQuake - Scenario Damage and Loss: Theoretical Background OpenQuake - Scenario Damage and Loss: Hands-on exercise OpenQuake - Classical PSHA: Theoretical Background OpenQuake - Classical PSHA: Hands-on Exercise OpenQuake - Event-based Risk: Theoretical Background OpenQuake - Event-Based Risk: Hands-on Exercise ​ OpenQuake - Volcanic Risk Scenarios: Theory and Hands-On Exercise Learn the basics to perform volcanic risk scenarios using the OpenQuake engine. In this video we cover the main components of a seismic risk model and discuss how their modelling assumptions and products may be useful for volcanic risk assessment. We include a hands-on exercise using the software to calculate volcanic risk and the QGIS OpenQuake plug-in to export and visualize results, like total losses and loss maps for the El Ruiz Volcano.

  • Global Earthquake Model Foundation | Italy

    Global Earthquake Model foundation For a world that is resilient to earthquakes and other natural hazards. Latest Updates News Understanding Seismic Resilience: GEM's Global Seismic Regulation Initiative More News GEM and NormanMax Partner to Reduce Earthquake Risk More Newsletter GEM TOPIQS Newsletter April-June 2024 More Available Seismic Hazard and Risk Models and Datasets Popup title Close Country/Region By selecting a region in the global map below, a table will appear to quickly take you to the available resources in that region. You can also use the Search box to look up any specific region, country or territory. More Products Downloadable Resources Collaborative Projects Completed Ongoing More Projects

  • Newsletter | Global Earthquake Model Foundation | Italy

    NEWSLETTER TOPIQS is GEM's bi-monthly newsletter which features the latest from GEM, expert opinions and a round up of earthquake risk and related issues in DRR policy and practice, insurance and financial applications, innovations in earthquake engineering, hazard and risk assessment, and others. Subscribe Now Share Most recent June 30, 2024 June 2024 Topiqs Busy Q2 for GEM! Showcased our work & collab spirit at #UR24 & @wcee2024, teamed up with USGS & NormanMax for earthquake safety. April 3, 2024 March 2024 Topiqs This release highlights a busy first quarter including the celebration of GEM's 15th anniversary. December 19, 2023 December 2023 Topiqs Explore our commitment to global seismic risk reduction through strengthened public-private partnerships. Archive Issue Date Teaser June 30, 2024 Busy Q2 for GEM! Showcased our work & collab spirit at #UR24 & @wcee2024, teamed up with USGS & NormanMax for earthquake safety. April 3, 2024 This release highlights a busy first quarter including the celebration of GEM's 15th anniversary. December 19, 2023 Explore our commitment to global seismic risk reduction through strengthened public-private partnerships. September 29, 2023 Advancing Earthquake Resilience: GEM Set to Unveil Cutting-Edge Global Seismic Hazard and Risk Products on the... June 30, 2023 In this newsletter: the Top Story will provide you with updates and a summary of the 2023 GEM Conference, the InFocus will feature John's story. April 17, 2023 Welcome to our first newsletter for 2023! Our Top Story is the release of GEM’s new global earthquake hazard and risk maps, models... December 8, 2022 GEM Topiqs is out! In this issue, we are happy to announce our partnership with Aon and CelsiusPro. We are also welcoming back Guy Carpenter... September 19, 2022 In this issue of Topiqs we are pleased to announce a new partnership with Allianz Group, which joined GEM as a Private Governor in June. June 6, 2022 In our Top Story, we are happy to announce the release of GEM’s commercial China Earthquake Model, developed by GEM staff. March 21, 2022 The Top Story for GEM’s first newsletter of 2022 is a partnership between GEM and RMS, which kicked off with a two-hour introductory meeting on March 16th. December 15, 2021 The latest updates from GEM highlights an award from EERI and an overview of GEM Strategic Plan and Roadmap to 2030. This issue also includes... August 31, 2021 Our Top Story in this issue is the successful completion of the TREQ Project webinar participated by 240+ individuals from around... June 4, 2021 The Top Story in this issue is the successful completion of the METEOR Project implemented by a consortium led by the British Geological Survey. March 29, 2021 Our Top Story in this issue is the commemoration of GEM’s 12-year anniversary with an article taking stock of how far GEM has come in its 12 years... January 25, 2021 Our Top Story in this issue is a recap of GEM’s 2020 activities and milestones. If you missed any of our important events or announcements... November 25, 2020 Our Top Story in this issue is the release of several regional and national earthquake hazard and risk models on UNDRR’s IDRR Day. September 21, 2020 In this issue of TOPIQS, we’d like to highlight GEM’s participation in the landmark insurance project by IDF... July 27, 2020 In this issue of TOPIQS, we’d like to highlight the following milestone Board decisions. May 22, 2020 Despite March and April being the worst months for the virus in Italy, GEM has continued to be productive and, along with all of you, we are learning to work... March 18, 2020 The TOPIQS newsletter has a new design and layout to make your navigation easy and your reading enjoyable. December 19, 2019 Our top stories focus on our work on SV modelling, the TREQ project, the GEM Impact Story Series project and OQ workshop in Canada. October 11, 2019 In this issue of TOPIQS, our top stories focus on new partnerships. Welcome to the GEM family Swiss Re Group, GC, GP and EDF/CEA! August 2, 2019 As usual, the third issue of TOPIQS is filled with a variety of topics and GEM activities that have occurred over the past three months. May 31, 2019 In this second issue of TOPIQS, we are happy to announce our partnership with USGS to enhance global earthquake loss modeling. March 26, 2019 In this first issue of TOPIQS for 2019, GEM would like to share with you a variety of topics and GEM activities that have occured over the past three months... November 29, 2018 GEM receives Damir Čemerin Award for its leadership in supporting disaster risk reduction. Our heartfelt thanks go to all our partners and collaborators. September 26, 2018 GEM new partnerships with Willis Watson Towers (WTW) and The 100 Resilient Cities – Pioneered by the Rockefeller Foundation (100RC). August 1, 2018 Global Model Review Panel completes report prepared by seven international experts that met on 18-19 April 2018. May 17, 2018 In this issue, GEM would like to share a rich variety of topics and GEM activities over the past two months... March 8, 2018 We hope that you are all doing well. Before anything else, we would like to thank you for the big success of TOPIQS maiden issue. December 20, 2017 2017 has been another year of intensive activity for the GEM Secretariat. 2017 saw significant... November 14, 2017 In this issue, we highlight GEM's stakeholder engagement and hazard and risk assessment activities in Central and South America September 12, 2017 In this issue, we highlight the awarding of a USAID project - CRAVE to GEM and updates on the Challenge Funds project. Read on to get more details. July 6, 2017 Once again, it has been a very busy two months at GEM. Below is a map of our May-June actvities and locations. May 4, 2017 GEM turns 9! In this issue, celebrate with us GEM’s 9th foundation anniversary! The Global Earthquake... March 16, 2017 The Global Earthquake Model Foundation (GEM) is excited to share with you the inaugural issue of our TOPIQS newsletter!

  • Understanding Seismic Resilience: GEM's Global Seismic Regulation Initiative - GEM Foundation

    News Understanding Seismic Resilience: GEM's Global Seismic Regulation Initiative By: ​ ​ Jul 8, 2024 Jun 20, 2024 Share Facebook X (Twitter) LinkedIn ​ Building earthquake-resilient communities requires a deep understanding of national seismic design regulations. The Global Earthquake Model (GEM) Foundation is launching The Global Seismic Regulation Database and Mapping Project initiative. This project aims to create a comprehensive database of current and past seismic design regulations across the globe. This information, along with enforcement levels and seismic zonations, is important for earthquake engineers and risk modellers. It allows for the development of more accurate exposure and vulnerability models used in probabilistic seismic risk assessments and earthquake scenario planning. Your Contribution Matters To enrich this valuable resource, GEM is conducting a brief survey - "Evaluation of Seismic Design Code Enforcement Around the World". This survey gathers insights into the evolution and enforcement of seismic regulations in various countries. By participating, you'll be directly contributing to a more comprehensive understanding of seismic vulnerability and risk around the world. Rest assured, all responses are confidential and used solely for seismic risk-related activities by GEM. We encourage you to participate! Please click the button below to fill out the form. Take the survey! No images found. GALLERY 1/0 ​ VIDEO RELATED CONTENTS

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