News INQUIMUS into ACTION Workshop By: Jul 2, 2018 Share Facebook LinkedIn GEM’s Paul Henshaw, Director of Technology and Development, delivered a presentation titled “OpenQuake: informing Disaster Risk Reduction Policy through open and collaborative Earthquake Risk Assessment” during the 4th INQUIMUS workshop held from 19th-21st September at Eurac Research, Bolzano, Italy. The organizers - the Department of Geoinformatics-Z_GIS at the University of Salzburg, Austria and the European Academy of Bozen/Bolzano (EURAC) - selected GEM’s presentation as one of the state-of-the-art talks (SOTA) for this year’s theme: “INQUIMUS into ACTION - How can scientific assessments inform decisions for problem-solving in practice”. Paul discussed how GEM promotes an integrated understanding of earthquake risk through a 3-step scientific framework composed of seismic hazard, physical risk and social vulnerability assessments using the OpenQuake engine - GEM’s state-of-the-art seismic hazard and risk computational software. He also emphasized the role of the OpenQuake Platform - a website that provides access to software, datasets, models and guidelines - on how these open tools and a collaborative approach promote stakeholder engagement and encourages risk mitigation actions. In addition, the presentation also highlighted GEM’s strategy of engaging end-users from the very beginning to ensure local conditions are reflected and outputs align with the needs of the local communities. During the discussion on how GEM used open tools to inform and contribute to the improvement of public policy, Paul said, “Throughout our work at GEM, the combination of open data, open models and open-source software have resulted in a powerful integrated workflow that permits transparent and repeatable calculations important not only for scientific credibility, but also for facilitating regulation compliance and community collaboration." The 4th INQUIMUS workshop also featured the works and experiences from the Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ), The Swedish Civil Contingencies Agency and the Federal Office of Civil Protection and Disaster Assistance, Germany (BBK). No images found. GALLERY 1/0 VIDEO RELATED CONTENTS

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Publications Exploring the impact of spatial correlations and uncertainties for portfolio analysis in probabilistic seismic loss estimation Share Facebook LinkedIn Download 2014 | Peer-reviewed The significant potential for human and economic losses arising from earthquakes affecting urban infrastructure has been demonstrated by many recent events such as, for example, L’Aquila (2009), Christchurch (2011) and Tohoku (2012). Within the current practice of seismic loss estimation in both academic and industry models, the modelling of spatial variability of the earthquake ground motion input across a region, and its corresponding influence upon portfolios of heterogeneous building types, may be oversimplified. In particular, the correlation properties that are well-known in observations of ground motion intensity measures (IMs) may not always be fully represented within the probabilistic modelling of seismic loss. Using a case study based on the Tuscany region of Italy, the impacts of including spatially cross-correlated random fields of different ground motion IMs are appraised at varying spatial resolutions. This case study illustrates the impact on the resulting seismic loss when considering synthetic aggregated portfolios over different spatial scales. Inclusion of spatial cross-correlation of IMs into the seismic risk analysis may often result in the likelihood of observing larger (and in certain cases smaller) losses for a portfolio distributed over a typical city scale, when compared against simulations in which the cross-correlation is neglected. It can also be seen that the degree to which the spatial correlations and cross-correlations can impact upon the loss estimates is sensitive to the conditions of the portfolio, particularly with respect to the spatial scale, the engineering properties of the different building types within the portfolio and the heterogeneity of the portfolio with respect to the types.

License Request Form You have chosen to get more information about: OpenQuake QGIS Plugin All Please check the link below to see if this product already meets your your requirements before submitting your request for a license. Thank you. DOWNLOAD THE OPEN VERSION Summary of steps to obtain a license for the requested product. Fill in the application form below. Click Submit. Please check your email Inbox or Spam folder for the summary of your request. You will then be contacted by the GEM Product Manager with either a request for more information, or a request to sign the license. If you do not hear from us within 2 weeks, please send an email to product@globalquakemodel.org . REQUEST DETAILS A. Requesting party information First Name Last Name Role/Job Email Business type Business type Other business Sector Sector Other sector B. License agreement signatory information The signatory must be someone who is authorised to sign license agreements on your behalf such as your immediate supervisor, manager or legal officer. If you’re a PhD student, the signatory must be your adviser or a university officer in charge of license agreements or similar legal documents. Full Name of Signatory Position Company Email of Signatory Organisation name Complete Address C. Purpose of request GEM is able to offer products for free because of the support of our project partners, national collaborators and institutional sponsors. All of GEM’s products are freely available for public good, non-commercial use, but with different license restrictions. In most cases we release products under an open license (e.g., CC BY-SA or CC BY-NC-SA), which permits (re)distribution. In this case, we are granting access under a more restricted license that forbids distribution or disclosure and requires signing by GEM and the licensee in order to better assure accountability for the confidentiality of the information. In order for GEM to properly assess your request, please answer the following questions below. 1. Explain briefly how will the GEM product be used e.g. project, research including the expected results and the foreseen public benefit. Minimum 60 words. 2. Will you be able to share the results of your work with GEM? YES NO 3. Will you be able to provide feedback to GEM on the quality and usefulness of this product via a survey? YES NO D. Privacy Policy By submitting this form, you consent to the processing of your personal data in accordance with our Privacy Policy and the EU General Data Protection Regulation (GDPR). We are committed to safeguarding your information and ensuring it is only used for the purpose outlined in this form. You have the right to access, rectify, or delete your data at any time. For more information, please refer to our Privacy Policy. I agree Words: 0 Email us at product@globalquakemodel.org if you're experiencing problems submitting your application. Thank you. Submit Thanks for submitting! You will be contacted as soon as possible Incomplete data. Please fill in all required fields. Thank you.

A homogenised collection of ground motion metadata files ('flatfiles') from around the world Products Global Ground Motion Flatfile A homogenised collection of ground motion metadata files ('flatfiles') from around the world Share Facebook LinkedIn Description GEM's Global Flatfile is a fully homogenised collection of publicly available ground-motion flatfiles and datasets. This dataset has been created with the purpose of facilitating ground-motion modelling/characterization activities. It contains metadata (but not waveforms) for over 750,000 unique recordings of over 40,000 unique events which have been tectonically classified by GEM, and it is supplemented with additional information from GEM's Global Homogenised Earthquake Catalogue where appropriate. The flatfile is formatted to work readily with the residual analysis capabilities of the Strong-Motion Tools (SMT) module of the OpenQuake Model Builder's Toolkit. How to cite this work Brooks, C., Pagani, M., & Villani, M. (2026). GEM Global Flatfile (Version v2026) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.20732303 Available Versions The latest version (v2026) will soon be available on Zenodo for direct download under a CC BY-SA 4.0 license. Users interested in this version can click the "Open Version Download" button in the right panel to access the information. If your use case does not comply with the license terms, a license can be requested by clicking on the "License Request", where a specific agreement will be provided, depending on the use case. License information The open version is available under a Creative Commons CC BY-SA 4.0 license, which requires: Attribution (you must give appropriate credit, provide a link to the license, and indicate if changes were made) ShareAlike (derivatives created must be made available under the same license as the original) Any deviation from these terms incur in license infringement and requires a license agreement that must be made tailored to your use case, in such instance please click on "License Request". Facebook LinkedIn Share Latest Version v2026 License CC BY-SA 4.0 Available resources Open Version Download License Request text Map View Search Popup title Close Country/Region Available Resources Afghanistan Exposure Africa Exposure Alaska Exposure Country/Region Available Resources Afghanistan Vulnerability Africa Vulnerability Alaska Vulnerability Country/Region Resource Url Afghanistan Risk Profile Africa Risk Profile Alaska Risk Profile Search Found Country/Region Resource Url Afghanistan Exposure Africa Exposure Alaska Exposure Preview Preview is not available. Search Found Country/Region Resource Url Afghanistan Vulnerability Africa Vulnerability Alaska Vulnerability Preview Preview is not available. Search Found Country/Region Resource Url Afghanistan Risk Profile Africa Risk Profile Alaska Risk Profile Preview Preview is not available. Related products Related publications For downloading or accessing detailed product information like PNG/PDF maps, datasets, license request, shapefiles and more, please switch to a desktop or laptop computer. Thank you for your understanding.

News CRAVE project kicks off in Bogota, Colombia By: Jul 2, 2018 Share Facebook LinkedIn The USAID project – Collaborative Risk Assessment for Volcanoes and Earthquakes or CRAVE successfully kicked off with a workshop in Bogota, Colombia on February 22-23, 2018. Participants came from the British Geological Survey, the Volcano Disaster Assistance Program (VDAP) of the United States Geological Survey (USGS), the Colombian Geological Survey and the Rabaul Volcano Observatory of Papua New Guinea. The project also includes the participation of the Philippine Institute of Volcanology and Seismology (PHIVOLCS), the Earth Observatory of Singapore (EOS) and the University of Edinburgh. The kickoff meeting covered several topics, including the identification of relevant hazard and risk information for decision-makers, data needs for volcano and earthquake hazard assessment in the pilot areas (Colombia and Papua New Guinea), challenges in the harmonization of software, models and datasets, and available modeling tools for the assessment of the impact from these geo-hazards. Marta Cavalche of SGC highlighted the importance of expanding the assessment beyond hazard after a discussion that most of the available assessment software is only for hazard. The project anticipates that communicating earthquake and volcanic risk can be a challenging task due to other competing social issues, and the lack of resources. However, Vitor Silva of the GEM Foundation points out that “When resources are limited, and they are always limited, we cannot afford to tackle one problem at a time. A multi-hazard and multi-disciplinary approach to disaster risk reduction better utilizes available resources.” Despite several aspects that need to be addressed such deciding on a uniform assessment framework, data format, and data availability, participants identified points of common work, as well as strategies to achieve the objectives set by the project. CRAVE is funded by USAID and will run for 18 months to develop a common framework for the assessment of the impact from earthquakes and volcanoes, with an application to a few locations in the Philippines, Papua New Guinea and Colombia.The kickoff meeting also appeared on SGC’s website article: Reunión inicial del proyecto CRAVE. No images found. GALLERY 1/0 VIDEO RELATED CONTENTS

OpenQuake engine input model to perform hazard calculations for the Philippines Products Philippine Hazard OpenQuake engine input model to perform hazard calculations for the Philippines Share Facebook LinkedIn Description The initial version (v2018.0.0) of the seismic hazard model for the Philippines was developed by the jointly by the Philippine Institute of Volcanology and Seismology (PHIVOLCS) and the Global Earthquake Model (GEM) in the OpenQuake engine format. Since the original version, several updates were made to the model by the GEM hazard team, leading to the latest release (v2018.3.0). Among other important improvements, this model extends the minimum magnitude of events for crustal distributed seismicity and updated the GMPEs used for more recent ones. How to cite this work Peñarubia, H.C., Johnson, K.L., Styron, R.H., Bacolcol, T.C., Sevilla, W.I.G., Perez, J.S., Bonita, J.D., Narag, I.C., Solidum Jr, R.U., Pagani, M.M. and Allen, T.I., 2020. Probabilistic seismic hazard analysis model for the Philippines. Earthquake Spectra, p.8755293019900521 Available Versions The latest version (v2018.3.0) is available for direct download under a CC BY-NC-SA 4.0 license. Users interested in this version can click the "Open Version Download" button in the right panel to access the information. If your use case does not comply with the license terms, a license can be requested by clicking on the "License Request", where a specific agreement will be provided, depending on the use case. License information The open version is available under a Creative Commons CC BY-NC-SA 4.0 license, which requires: Attribution (you must give appropriate credit, provide a link to the license, and indicate if changes were made) Non-commercial (you may not use the material for commercial purposes) ShareAlike (derivatives created must be made available under the same license as the original) Any deviation from these terms incur in license infringement. For commercial use of the model, a specific license agreement must be made tailored to your use case, in such instance please click on "License Request". Facebook LinkedIn Share Latest Version v2018.3.0 License CC BY-NC-SA 4.0 Available resources Open Version Download Documentation License Request text Map View Search Popup title Close Country/Region Available Resources Afghanistan Exposure Africa Exposure Alaska Exposure Country/Region Available Resources Afghanistan Vulnerability Africa Vulnerability Alaska Vulnerability Country/Region Resource Url Afghanistan Risk Profile Africa Risk Profile Alaska Risk Profile Search Found Country/Region Resource Url Afghanistan Exposure Africa Exposure Alaska Exposure Preview Preview is not available. Search Found Country/Region Resource Url Afghanistan Vulnerability Africa Vulnerability Alaska Vulnerability Preview Preview is not available. Search Found Country/Region Resource Url Afghanistan Risk Profile Africa Risk Profile Alaska Risk Profile Preview Preview is not available. Related products Related publications Probabilistic seismic hazard analysis model for the Philippines Read More For downloading or accessing detailed product information like PNG/PDF maps, datasets, license request, shapefiles and more, please switch to a desktop or laptop computer. Thank you for your understanding.

License Request Form You have chosen to get more information about: Africa Exposure Exposure Please check the link below to see if this product already meets your your requirements before submitting your request for a license. Thank you. DOWNLOAD THE OPEN VERSION Summary of steps to obtain a license for the requested product. Fill in the application form below. Click Submit. Please check your email Inbox or Spam folder for the summary of your request. You will then be contacted by the GEM Product Manager with either a request for more information, or a request to sign the license. If you do not hear from us within 2 weeks, please send an email to product@globalquakemodel.org . REQUEST DETAILS A. Requesting party information First Name Last Name Role/Job Email Business type Business type Other business Sector Sector Other sector B. License agreement signatory information The signatory must be someone who is authorised to sign license agreements on your behalf such as your immediate supervisor, manager or legal officer. If you’re a PhD student, the signatory must be your adviser or a university officer in charge of license agreements or similar legal documents. Full Name of Signatory Position Company Email of Signatory Organisation name Complete Address C. Purpose of request GEM is able to offer products for free because of the support of our project partners, national collaborators and institutional sponsors. All of GEM’s products are freely available for public good, non-commercial use, but with different license restrictions. In most cases we release products under an open license (e.g., CC BY-SA or CC BY-NC-SA), which permits (re)distribution. In this case, we are granting access under a more restricted license that forbids distribution or disclosure and requires signing by GEM and the licensee in order to better assure accountability for the confidentiality of the information. In order for GEM to properly assess your request, please answer the following questions below. 1. Explain briefly how will the GEM product be used e.g. project, research including the expected results and the foreseen public benefit. Minimum 60 words. 2. Will you be able to share the results of your work with GEM? YES NO 3. Will you be able to provide feedback to GEM on the quality and usefulness of this product via a survey? YES NO D. Privacy Policy By submitting this form, you consent to the processing of your personal data in accordance with our Privacy Policy and the EU General Data Protection Regulation (GDPR). We are committed to safeguarding your information and ensuring it is only used for the purpose outlined in this form. You have the right to access, rectify, or delete your data at any time. For more information, please refer to our Privacy Policy. I agree Words: 0 Email us at product@globalquakemodel.org if you're experiencing problems submitting your application. Thank you. Submit Thanks for submitting! You will be contacted as soon as possible Incomplete data. Please fill in all required fields. Thank you.

Publications Probabilistic seismic risk assessment of India Share Facebook LinkedIn Download 2020 | Peer-reviewed This study presents a comprehensive open probabilistic seismic risk model for India. The proposed model comprises a nationwide residential and non-residential building exposure model, a selection of analytical seismic vulnerability functions tailored for Indian building classes, and the open implementation of an existing probabilistic seismic hazard model for India. The vulnerability of the building exposure is combined with the seismic hazard using the stochastic (Monte Carlo) event-based calculator of the OpenQuake engine to estimate probabilistic seismic risk metrics such as average annual economic losses and the exceedance probability curves at the national, state, district, and subdistrict levels. The risk model and the underlying datasets, along with the risk metrics calculated at different scales, are intended to be used as tools to quantitatively assess the earthquake risk across India and also compare with other countries to develop risk-informed building design guidelines, for more careful land-use planning, to optimize earthquake insurance pricing, and to enhance general earthquake risk awareness and preparedness.

News TREQ Project Updates: Site Effects Modelling and Urban Exposure Models By: Jun 3, 2021 Share Facebook LinkedIn Site Effects Modelling and Urban Exposure Models Over the past year, TREQ has made significant progress in the risk and hazard assessment for the selected cities: Santiago (Dominican Republic), Quito (Ecuador) and Cali (Colombia). This includes compiling and preparing existing PSHA models for hazard calculations; and the development of detailed exposure and vulnerability models. Urban Hazard Assessment For Santiago de los Caballeros, Dominican Republic, the project team worked with local experts from the National Geological Survey (SGN) and the Autonomous University (UASD) at compiling, reviewing, and preparing a new seismic catalogue to be used in hazard calculations for Hispaniola. The team has also prepared the national database of active faults, using the information compiled in the CCARA project and additional information provided by SGN (i.e. data and reports). The project is now using the catalogue and fault data to construct the national probabilistic seismic hazard model for the Dominican Republic. A preliminary version has been completed, and construction of the final model is underway. For Cali, Colombia, the project improved the national model proposed by Arcila et al. (2020) by adding a new fault located underlying the city (i.e. Cauca-Cali-Patia fault), consistent with the seismic zonations used in the microzonation study for Cali (Ingeominas-Dagma, 2005), and the Colombian building code (AIS, 2009). For Quito, Ecuador, the project selected the model of Beauval et al. (2018), composed of shallow and subduction seismic sources characterized using an ISC-based catalogue and active shallow fault sources considering geodetic slip-rates assuming a 50% of aseismic slip. Now, the project is consolidating the available geological, geophysical, and geotechnical data for each of the three cities needed to compute site-response (amplification of ground shaking in surficial sediments (or soil) during an earthquake). Future versions of the OpenQuake engine will support the calculation of site response through detailed site/soil amplification functions and their corresponding uncertainty. Urban Risk Assessment GEM has already developed exposure datasets at the subnational level in the Dominican Republic, Colombia and Ecuador. However, the risk assessment activities planned within the context of TREQ require exposure datasets at urban scale. To this end, GEM has focused on the development of high-resolution exposure models. These have been established with support from the municipal governments in each city, namely, Oficina de Planeamiento Territorial (Santiago de los Caballeros), Oficina de Planeación y la Secretaría de Gestión del Riesgo de Emergencias y Desastres (Cali), and Dirección Metropolitana de Gestión del Riesgo (Quito). The exposure models were developed using dedicated databases from each city. These databases include the most recent information from the census, cadaster, and urban planning offices. As a result, they feature better estimates for the number of occupants, building counts, replacement costs and vulnerability classification of structures. In close collaboration GEM and the USGS are validating the exposure models by means of assessing the potential impacts of earthquake scenarios at a neighborhood level. The objective is to use recorded/estimated damage and economic losses from relevant historical scenarios to assess the accuracy of the exposure and hazard model data. The risk metrics that are being analyzed in each city include building damage, economic losses and fatalities. No images found. GALLERY 1/0 Gallery VIDEO RELATED CONTENTS