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  • Exploring earthquake databases for the creation of magnitude-homogeneous catalogues: tools for application on a regional and global scale

    Publications SHORT INTRO The creation of a magnitude-homogenized catalogue is often one of the most fundamental steps in seismic hazard analysis. The process of homogenizing multiple catalogues of earthquakes into a single unified catalogue typically requires careful appraisal of avai ... ALL DETAILS Exploring earthquake databases for the creation of magnitude-homogeneous catalogues: tools for application on a regional and global scale Authors G.A. Weatherill M. Pagani J. Garcia Hazard Topic Year 2016 Publications Download The creation of a magnitude-homogenized catalogue is often one of the most fundamental steps in seismic hazard analysis. The process of homogenizing multiple catalogues of earthquakes into a single unified catalogue typically requires careful appraisal of available bulletins, identification of common events within multiple bulletins and the development and application of empirical models to convert from each catalogue's native scale into the required target. The database of the International Seismological Center (ISC) provides the most exhaustive compilation of records from local bulletins, in addition to its reviewed global bulletin. New open-source tools are developed that can utilize this, or any other compiled database, to explore the relations between earthquake solutions provided by different recording networks, and to build and apply empirical models in order to harmonize magnitude scales for the purpose of creating magnitude-homogeneous earthquake catalogues. These tools are described and their application illustrated in two different contexts. The first is a simple application in the Sub-Saharan Africa region where the spatial coverage and magnitude scales for different local recording networks are compared, and their relation to global magnitude scales explored. In the second application the tools are used on a global scale for the purpose of creating an extended magnitude-homogeneous global earthquake catalogue. Several existing high-quality earthquake databases, such as the ISC-GEM and the ISC Reviewed Bulletins, are harmonized into moment magnitude to form a catalogue of more than 562 840 events. This extended catalogue, while not an appropriate substitute for a locally calibrated analysis, can help in studying global patterns in seismicity and hazard, and is therefore released with the accompanying software. Abstract/Summary

  • Northwest Asia | Global EarthQuake Model Foundation

    GEM License Types – GNU Affero General Public License, used mostly for software AGPL – Creative Commons, By-Attribution CC BY – Creative Commons, By-Attribution, Share-Alike CC BY-SA – Creative Commons, By Attribution, Non-Commercial, Share-Alike CC BY-NC-SA – Non-Disclosure Agreement (By request for public-good, non-commercial use.) NDA – If a product is not available under a license that suits your needs, such as for commercial application, please contact us to discuss your use case and other partnership/licensing options and fees. Other/Commercial More details on GEM’s licensing terms . here Products Northwest Asia Product type Model Now DESCRIPTION Northwestern is part of GEM's Global Earthquake Hazard and Risk Maps released to the public in December 2018. As part of the mosaic, the seismic hazard, exposure and vulnerability models employed in the calculations were either provided by national institutions, or developed within the scope of regional programs, bilateral collaborations, or by GEM. Click View for details. APPLICATION Product category Model Contact ​ License type ​ Maintained by ​ Component ​ Documentation Hazard Risk Contributors Manual Download Hazard Download Risk Contact GEM Download Download Exposure Download Vulnerability Hazard The Northwest Asia (NWA) model was developed internally by GEM in collaboration with the Swiss Seismological Service (SED), Swiss Federal Institute of Technology (ETH), Switzerland. The model is based on a distributed seismicity approach. Maintained by GEM Product type Model Availability Now Product restrictions Non-Disclosure Agreement (By request for public-good, non-commercial use) Licence type NDA Send us a request Documentation View Exposure Exposure data for Admin level 1 for population, commercial, industrial and residential buildings Maintained by GEM Product type Model Availability Now Product restrictions Non-Disclosure Agreement (By request for public-good, non-commercial use) Licence type NDA Send us a request Documentation View Vulnerability Vulnerability curves for all building classes Maintained by GEM Product type Model Availability Now Product restrictions Open By Attribution, Share-Alike and Commercial use provided the by-products are shared under the same conditions as the original license Licence type CC BY-SA Send us a request Documentation View Country Profiles Maintained by GEM Licence type CC BY-SA Availability Now Product restrictions Open By Attribution, Share-Alike and Commercial use provided the by-products are shared under the same conditions as the original license

  • New Zealand | Global EarthQuake Model Foundation

    GEM License Types – GNU Affero General Public License, used mostly for software AGPL – Creative Commons, By-Attribution CC BY – Creative Commons, By-Attribution, Share-Alike CC BY-SA – Creative Commons, By Attribution, Non-Commercial, Share-Alike CC BY-NC-SA – Non-Disclosure Agreement (By request for public-good, non-commercial use.) NDA – If a product is not available under a license that suits your needs, such as for commercial application, please contact us to discuss your use case and other partnership/licensing options and fees. Other/Commercial More details on GEM’s licensing terms . here Products New Zealand Product type Model Now DESCRIPTION New Zealand is part of GEM's Global Earthquake Hazard and Risk Maps released to the public in December 2018. As part of the mosaic, the seismic hazard, exposure and vulnerability models employed in the calculations were either provided by national institutions, or developed within the scope of regional programs, bilateral collaborations, or by GEM. Click View for details. APPLICATION Product category Model Contact ​ License type ​ Maintained by ​ Component ​ Documentation Hazard Risk Contributors Manual Download Hazard Download Risk Contact GEM Download Download Exposure Download Vulnerability Hazard The development of the 2010 seismic hazard model for New Zealand was led by GNS Science, New Zealand (Stirling et al. 2012). It has been translated from its original format into the OpenQuake (OQ) engine by GNS Science. A corrected version of the model was made available in 2018, and a summary of these updates are provided below. The corrected version was used in the GEM Global Model v.2018.1. The model covers the North, South, and Stewart Islands. The Chatham Islands to the east are excluded. Maintained by GNS Product type Model Availability Now Product restrictions Available from GNS New Zealand Licence type As originally defined Send us a request Documentation View Exposure Exposure data for Admin level 1 for population, commercial, industrial and residential buildings Maintained by GEM Product type Model Availability Coming soon Product restrictions Non-Disclosure Agreement (By request for public-good, non-commercial use) Licence type NDA Send us a request Documentation View Vulnerability Vulnerability curves for all building classes Maintained by GEM Product type Model Availability Coming soon Product restrictions Open By Attribution, Share-Alike and Commercial use provided the by-products are shared under the same conditions as the original license Licence type CC BY-SA Send us a request Documentation View Country Profiles Maintained by GEM Licence type CC BY-SA Availability Now Product restrictions Open By Attribution, Share-Alike and Commercial use provided the by-products are shared under the same conditions as the original license

  • Data Interchange Formats for the Global Earthquake Model (GEM)

    Publications SHORT INTRO Sixteen draft data interchange formats and 7 terminology standards (collectively referred to here as DIFs) are proposed here for use in GEM1. This initial draft includes several DIFs for hazard output (to be used as input to risk analyses), exposure (i.e., val ... ALL DETAILS Data Interchange Formats for the Global Earthquake Model (GEM) Authors Keith Porter and Charles Scawthorn SPA Risk LLC Pasadena CA, USA OpenQuake Topic Year 2010 Publications Download Sixteen draft data interchange formats and 7 terminology standards (collectively referred to here as DIFs) are proposed here for use in GEM1. This initial draft includes several DIFs for hazard output (to be used as input to risk analyses), exposure (i.e., values exposed to seismic risk), vulnerability, and fragility. Samples are provided of each DIF, and in each case, each parameter is explained, assigned a variable type (e.g., integer, text string, double-precision floating point, etc.) and any constraints are specified (e.g., probabilities between 0 and 1). The proposed data standards in this draft draw primarily on OpenSHA, OpenRisk, PAGER, and to a limited extent HAZUS-MH, EMS-98, and the World Housing Encyclopedia. The DIFs presented in this draft are entirely human-readable, plain-text flat files (commas-and-quotes); no attempt has been made yet to define XML formats. The emphasis in these DIFs is on simplicity and universality over storage efficiency. It is not intended that these DIFs represent a complete or exhaustive set of what GEM1 will require. Later drafts may add XML format and DIFs for other I/O needs. GEM1 participants are encouraged to contact the authors to recommend additions, modifications, and clarification. Abstract/Summary

  • GEM1 Executive Summary

    Publications SHORT INTRO The Global Earthquake Model (GEM) is a public/private partnership initiated and approved by the Global Science Forum of the Organisation for Economic Co-operation and Development (OECD-GSF). GEM aims to provide uniform, independent standards to calculate and c ... ALL DETAILS GEM1 Executive Summary Authors GEM GEM Topic Year 2010 Publications Download The Global Earthquake Model (GEM) is a public/private partnership initiated and approved by the Global Science Forum of the Organisation for Economic Co-operation and Development (OECD-GSF). GEM aims to provide uniform, independent standards to calculate and communicate earthquake risk worldwide. With committed backing from academia, governments, and industry, GEM will contribute to improved modelling of earthquake risk worldwide. More information is available on the GEM website: www.globalquakemodel.org. As a first step in developing a global earthquake model, a focused pilot project named GEM1 was launched to generate GEM’s first products and develop GEM’s initial IT infrastructure. GEM1 formally started in January 2009 and ended on March 31st 2010, whilst ETH Zurich was appointed as the coordinator, with EUCENTRE (Italy), GFZ (Germany), NORSAR (Norway) and the USGS (USA) as contributing partners (and a number of other institutions and individuals, named in the companion reports, also provided models, data and feedback). The main objective of GEM1 was that it would provide a basis upon which the future development of the full GEM computing environment and product set could be built. The aim as spelled out in the GEM1 implementation plan was to largely use existing tools and datasets in hazard and risk, connected through a unified IT infrastructure. The GEM1 deliverables are therefore to be considered ‘proof-of-concept’ rather than final products, hence any resulting outputs should be conceived as conceptual only and are thus not suitable for application. This report briefly summarizes the achievements of GEM1. Abstract/Summary

  • Northern Africa | Global EarthQuake Model Foundation

    GEM License Types – GNU Affero General Public License, used mostly for software AGPL – Creative Commons, By-Attribution CC BY – Creative Commons, By-Attribution, Share-Alike CC BY-SA – Creative Commons, By Attribution, Non-Commercial, Share-Alike CC BY-NC-SA – Non-Disclosure Agreement (By request for public-good, non-commercial use.) NDA – If a product is not available under a license that suits your needs, such as for commercial application, please contact us to discuss your use case and other partnership/licensing options and fees. Other/Commercial More details on GEM’s licensing terms . here Products Northern Africa Product type Model Now DESCRIPTION Northern Africa is part of GEM's Global Earthquake Hazard and Risk Maps released to the public in December 2018. As part of the mosaic, the seismic hazard, exposure and vulnerability models employed in the calculations were either provided by national institutions, or developed within the scope of regional programs, bilateral collaborations, or by GEM. Click View for details. APPLICATION Product category Model Contact ​ License type ​ Maintained by ​ Component ​ Documentation Hazard Risk Contributors Manual Download Hazard Download Risk Contact GEM Download Download Exposure Download Vulnerability Hazard The Northern Africa model (NAF) was developed by GEM and is described in Poggi et al. (2020). The model extends form Morocco to Egypt along the Mediterranean coastline. Maintained by GEM Product type Model Availability Now Product restrictions Open By Attribution and Share-Alike but not for commercial use Licence type CC BY-NC-SA Send us a request Documentation View Exposure Exposure data for Admin level 1 for population, commercial, industrial and residential buildings Maintained by GEM Product type Model Availability Now Product restrictions Non-Disclosure Agreement (By request for public-good, non-commercial use) Licence type NDA Send us a request Documentation View Vulnerability Vulnerability curves for all building classes Maintained by GEM Product type Model Availability Now Product restrictions Open By Attribution, Share-Alike and Commercial use provided the by-products are shared under the same conditions as the original license Licence type CC BY-SA Send us a request Documentation View Country Profiles Maintained by GEM Licence type CC BY-SA Availability Now Product restrictions Open By Attribution, Share-Alike and Commercial use provided the by-products are shared under the same conditions as the original license

  • The Global Earthquake Model Physical Vulnerability Database

    Publications SHORT INTRO There are almost 50 years of research on fragility and vulnerability assessment, both key elements in seismic risk or loss estimation. This paper presents the online database of physical vulnerability models that has been created as part of the Global Earthqua ... ALL DETAILS The Global Earthquake Model Physical Vulnerability Database Authors Yepes C, Silva V, D'Ayala D, Rossetto T, Ioannou I, Meslen A, Crowley H Physical risk Topic Year 2016 Publications Download There are almost 50 years of research on fragility and vulnerability assessment, both key elements in seismic risk or loss estimation. This paper presents the online database of physical vulnerability models that has been created as part of the Global Earthquake Model (GEM) initiative. The database comprises fragility and vulnerability curves, damage-to-loss models, and capacity curves for various types of structures. The attributes that have been selected to characterize each function, the constraints of setting up a usable database, the challenges in collecting these models, and the current trends in the development of vulnerability models are discussed in this study. The current collection of models leverages upon the outputs of several initiatives, such as GEM's Global Vulnerability Consortium and the European Syner-G project. This database is publicly available through the web-based GEM OpenQuake-platform http://doi.org/10.13117/GEM.DATASET.VULN.WEB-V1.0. Abstract/Summary

  • Glossary for GEM Taxonomy (v.2018) | Global EarthQuake Model Foundation

    GEM License Types – GNU Affero General Public License, used mostly for software AGPL – Creative Commons, By-Attribution CC BY – Creative Commons, By-Attribution, Share-Alike CC BY-SA – Creative Commons, By Attribution, Non-Commercial, Share-Alike CC BY-NC-SA – Non-Disclosure Agreement (By request for public-good, non-commercial use.) NDA – If a product is not available under a license that suits your needs, such as for commercial application, please contact us to discuss your use case and other partnership/licensing options and fees. Other/Commercial More details on GEM’s licensing terms . here Products Glossary for GEM Taxonomy (v.2018) Product type Software Now DESCRIPTION An online tool that explains around 400 terms contained in the GEM Building Taxonomy v 2.0 and nearly 700 images. APPLICATION Product category Software Contact ​ License type ​ Maintained by ​ Component ​ Documentation Hazard Risk Contributors Manual Download Hazard Download Risk Contact GEM Download Download Exposure Download Vulnerability ​ An online tool that explains around 400 terms contained in the GEM Building Taxonomy v 2.0 and nearly 700 images. Maintained by GEM Product type Software Availability Now Product restrictions Open By Attribution, Share-Alike and Commercial use provided the by-products are shared under the same conditions as the original license Licence type AGPL Send us a request Documentation View

  • Country Risk Profiles (v.2018) | Global EarthQuake Model Foundation

    GEM License Types – GNU Affero General Public License, used mostly for software AGPL – Creative Commons, By-Attribution CC BY – Creative Commons, By-Attribution, Share-Alike CC BY-SA – Creative Commons, By Attribution, Non-Commercial, Share-Alike CC BY-NC-SA – Non-Disclosure Agreement (By request for public-good, non-commercial use.) NDA – If a product is not available under a license that suits your needs, such as for commercial application, please contact us to discuss your use case and other partnership/licensing options and fees. Other/Commercial More details on GEM’s licensing terms . here Products Country Risk Profiles (v.2018) Product type Dataset Now DESCRIPTION A collection of more than 100 country seismic risk profiles. The risk is summarized in 1 page with AAL, financial, economic, social and population data. APPLICATION Product category Dataset Contact ​ License type ​ Maintained by ​ Component ​ Documentation Hazard Risk Contributors Manual Download Hazard Download Risk Contact GEM Download Download Exposure Download Vulnerability ​ A collection of more than 100 country seismic risk profiles. The risk is summarized in 1 page with AAL, financial, economic, social and population data. Maintained by GEM Product type Dataset Availability Now Product restrictions Open By Attribution and Share-Alike but not for commercial use Licence type CC BY-NC-SA Send us a request Documentation View

  • Seismic damage assessment using RADIUS and GIS: A case study of Sylhet City, Bangladesh

    Publications SHORT INTRO Seismic risk of urban areas around the world is a major concern to stakeholders due to the potential losses of lives and extensive damage to infrastructure that can occur following an earthquake. As risk mitigation resources are limited, a method for assessing ... ALL DETAILS Seismic damage assessment using RADIUS and GIS: A case study of Sylhet City, Bangladesh Authors ​ Physical risk Topic Year 2018 Publications Download Seismic risk of urban areas around the world is a major concern to stakeholders due to the potential losses of lives and extensive damage to infrastructure that can occur following an earthquake. As risk mitigation resources are limited, a method for assessing risk and prioritizing structures for seismic retrofit at a city or regional scale is required. Scenario-based seismic damage prediction can be used by decision-makers for identifying the riskiest structures that can be prioritized for risk mitigation to optimize the use of available resources. In this case study, for the first time, seismic damage estimation is performed for Sylhet City Corporation (SCC), Bangladesh by integrating Risk Assessment tools for Diagnosis of Urban areas against Seismic disasters (RADIUS) and Geophysical Information System (GIS). Building structures, infrastructure, and soil type information for SCC from a recent study performed by the local government under the framework of the Comprehensive Disaster Management Program (CDMP) are used. The building inventory and other information in the study area are divided into 1.0 × 1.0 square km grids and the information is mapped into RADIUS. Two scenario earthquakes are chosen to perform damage estimation of existing buildings and infrastructures. The study reveals that the two scenario earthquakes (Mw 8.0 from Dauki Fault and Mw 7.6 from Plate Boundary Fault 2) can result in extensive damage and a high number of casualties in the SCC area. The integrated GIS and RADIUS approach provides useful information for decision making in the seismic risk mitigation plan of the city. Abstract/Summary

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