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All of GEM’s products are freely available for public good, non-commercial use, but they may have different license restrictions. Open and free distribution of data, models, and tools remains at the core of GEM’s work, further enhancing their availability and accessibility.
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Available Seismic Hazard and Risk Models and Datasets
The gallery or list will show the region, country, or territory that currently has GEM seismic hazard and exposure models based on your search input.
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.
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Product | Short Description | License | Type |
|---|---|---|---|
Active Faults Database | A repository with global homogenised characteristics of active faults | CC BY-SA 4.0 | Dataset |
Africa Exposure | Repository with the inventory of residential, commercial and industrial buildings in Africa | CC BY-SA 4.0/CC BY-NC-SA 4.0 | Model |
Alaska Hazard | OpenQuake engine input model to perform hazard calculations for Alaska | CC BY-SA 4.0 | Model |
Arabia Hazard | OpenQuake engine input model to perform hazard calculations for the Arabian Peninsula | CC BY-SA 4.0 | Model |
Atlas - Global Seismic Hazard Curves | A dynamic web portal and API featuring instant display and download of hazard curves worldwide | Custom license | Dataset |
Australia Hazard | OpenQuake engine input model to perform hazard calculations for Australia | CC BY 4.0 | Model |
California UCERF3 | OpenQuake engine input model to perform hazard calculations for California UCERF3 source model portion | Custom license | Model |
Canada Hazard | OpenQuake engine input model to perform hazard calculations for Canada | CC BY-NC-SA 4.0 | Model |
Caribbean & Central America Exposure | Repository with the inventory of residential, commercial and industrial buildings in the Caribbean and Central America | CC BY-NC-SA 4.0 | Model |
Caribbean & Central America Hazard | OpenQuake engine input model to perform hazard calculations for the Caribbean & Central America | CC BY-SA 4.0 | Model |
Central Asia Exposure | Repository with the inventory of residential, commercial and industrial buildings in Central Asia | CC BY-NC-SA 4.0 | Model |
Central Asia Hazard | OpenQuake engine input model to perform hazard calculations for Central Asia | CC BY-SA 4.0 | Model |
China Financial Loss Model | Country model to assess potential financial losses to commercial, industrial and residential buildings due to earthquakes | Custom license | Model |
China Hazard | OpenQuake engine input model to perform hazard calculations for China | Custom license | Model |
Colombia Financial Loss Model | Country model to assess potential financial losses to commercial, industrial and residential buildings due to earthquakes | Custom license | Model |
Conterminous US Hazard | OpenQuake engine input model to perform hazard calculations for conterminous territories of the United States (including California) | Custom license | Model |
Country-Territory Seismic Risk Profiles | A collection of seismic risk profiles, summarizing key metrics of risk for most countries/territories in the world at a glance | CC BY-NC-SA 4.0 | Dataset |
Dominican Republic Hazard | OpenQuake engine input model to perform hazard calculations for the Dominican Republic | CC BY-SA 4.0 | Model |
Earthquake Scenario Database | A collection of earthquake footprints and consequences from past events | CC BY-NC-SA 4.0 | Dataset |
East Asia Exposure | Repository with the inventory of residential, commercial and industrial buildings in East Asia | CC BY-NC-SA 4.0 | Model |
Europe Exposure | Repository with the inventory of residential, commercial and industrial buildings in Europe | CC BY-NC-SA 4.0 | Model |
Europe Hazard | OpenQuake engine input model to perform hazard calculations for Europe | CC BY 4.0 | Model |
Global Exposure Model | Comprehensive datasets of the residential, commercial and industrial building stock worldwide | CC BY-NC-SA 4.0 | Model |
Global Seismic Hazard Map | Openly accessible global datasets and plots for peak ground acceleration with a return period of 475 years on rock | CC BY-SA 4.0/CC BY-NC-SA 4.0 | Map |
Global Seismic Risk Map | A milestone in global earthquake risk assessment | CC BY-SA 4.0 | Map |
Global Vulnerability Model | Sets of functions to assess the consequences of earthquakes on the built environment of the world | CC BY-NC-SA 4.0 | Model |
Hawaii Hazard | OpenQuake engine input model to perform hazard calculations for Hawaii | Custom license | Model |
India and surroundings Hazard | OpenQuake engine input model to perform hazard calculations for India and surrounding territories | AGPL v3.0 | Model |
Indonesia Hazard | OpenQuake engine input model to perform hazard calculations for Indonesia | CC BY-NC-SA 4.0 | Model |
Japan Hazard | OpenQuake engine input model to perform hazard calculations for Japan | Custom license | Model |
Mexico Hazard | OpenQuake engine input model to perform hazard calculations for Mexico | CC BY-NC-SA 4.0 | Model |
Middle East Exposure | Repository with the inventory of residential, commercial and industrial buildings in Middle East | CC BY-NC-SA 4.0 | Model |
Middle East Hazard | OpenQuake engine input model to perform hazard calculations for the Middle East | CC BY-SA 4.0 | Model |
New Zealand Hazard | OpenQuake engine input model to perform hazard calculations for New Zealand | As original | Model |
North America Exposure | Repository with the inventory of residential, commercial and industrial buildings in North America | CC BY-NC-SA 4.0 | Model |
North Asia Exposure | Repository with the inventory of residential, commercial and industrial buildings in North Asia | CC BY-NC-SA 4.0 | Model |
North and South Korea Hazard | OpenQuake engine input model to perform hazard calculations for the Korean Peninsula | Custom license | Model |
Northeast Asia Hazard | OpenQuake engine input model to perform hazard calculations for Northeast Asia | Custom license | Model |
Northern Africa Hazard | OpenQuake engine input model to perform hazard calculations for Northern Africa | CC BY-NC-SA 4.0 | Model |
Northwest Asia Hazard | OpenQuake engine input model to perform hazard calculations for Northwest Asia | Custom license | Model |
Oceania Exposure | Repository with the inventory of residential, commercial and industrial buildings in Oceania | CC BY-NC-SA 4.0 | Model |
OpenQuake Engine | State-of-the-art, open-source software collaboratively developed for earthquake hazard and risk modelling | AGPL v3.0 | Software |
OpenQuake QGIS Plugin | Plugin to drive and visualize OpenQuake engine results in QGIS | AGPL v3.0 | Software |
Pacific Islands Hazard | OpenQuake engine input model to perform hazard calculations for the Pacific Islands | Custom license | Model |
Papua New Guinea Hazard | OpenQuake engine input model to perform hazard calculations for Papua New Guinea | CC BY 4.0 | Model |
Philippine Hazard | OpenQuake engine input model to perform hazard calculations for the Philippines | CC BY-NC-SA 4.0 | Model |
South Africa Financial Loss Model | Country model to assess potential financial losses to commercial, industrial and residential buildings due to earthquakes | Custom license | Model |
South Africa Hazard | OpenQuake engine input model to perform hazard calculations for South Africa | CC BY-SA 4.0 | Model |
South America Exposure | Repository with the inventory of residential, commercial and industrial buildings in South America | CC BY-NC-SA 4.0 | Model |
South America Hazard | OpenQuake engine input model to perform hazard calculations for South America | CC BY-NC-SA 4.0 | Model |
South Asia Exposure | Repository with the inventory of residential, commercial and industrial buildings in South Asia | CC BY-NC-SA 4.0 | Model |
Southeast Asia Exposure | Repository with the inventory of residential, commercial and industrial buildings in Southeast Asia | CC BY-NC-SA 4.0 | Model |
Southeast Asia Hazard | OpenQuake engine input model to perform hazard calculations for Southeast Asia | CC BY-SA 4.0 | Model |
Sub-Saharan Africa Hazard | OpenQuake engine input model to perform hazard calculations for Sub-Saharan Africa | CC BY-SA 4.0/CC BY-NC-SA 4.0 | Model |
Taiwan Hazard | OpenQuake engine input model to perform hazard calculations for Taiwan | CC BY-SA 4.0 | Model |
Western Africa Hazard | OpenQuake engine input model to perform hazard calculations for Western Africa | CC BY-NC-SA 4.0 | Model |
Model
China Financial Loss Model
License type:
Custom license
The China financial loss model has been developed by GEM using public sources of information, such as past seismicity, and geodetic and geologic data for the hazard component, combined with exposure and vulnerability data. The hazard component incorporates both faults and area sources. Earthquake occurrence rates on active faults are based on a new tectonic block model derived from the joint inversion of geodetic and geologic data. The model provides estimates of financial risk to residential, commercial and industrial buildings using GEM’s vulnerability models appropriate to Chinese construction practice. GEM has also developed an exposure model that can be used to estimate total losses to the building stock in addition to portfolio losses. Further technical information can be found in the documentation.
GEM extensively collaborated with its private and public partners to test and validate the model against industry standards in order to produce a new model that represents GEM’s view of risk. The model is available in Oasis and Touchstone formats, as well as through the NASDAQ platform.
Model
China Hazard
License type:
Custom license
The Global Hazard Mosaic coverage of China was developed by the GEM Secretariat. The model covers mainland China and is composed of smooth seismicity sources and fault sources, the latter of which are mostly located in the western half of the territory.
Further information on the model, as well as different versions available, can be consulted in the model documentation.
Model
Colombia Financial Loss Model
License type:
Custom license
The GEM Colombia model is based upon GEM’s regional model for South America first developed from 2013 to 2015 within the South America Risk Assessment (SARA) project funded by the Swiss Re Foundation and updated in 2018. The development process involved dozens of local scientists and engineers from earthquake-prone countries in South America, resulting in an open product for analyzing ground-up loss from ground shaking for residential, commercial, and industrial buildings. This model has been further improved with local information, such as local construction practices, replacement costs and level of enforcement of the seismic regulations. Further technical information can be found in the documentation.
GEM extensively collaborated with its private and public partners to test and validate the model against industry standards in order to produce a new model that represents GEM’s view of risk. The model is available in Oasis and Touchstone formats, as well as through the NASDAQ platform.
Model
Conterminous US Hazard
License type:
Custom license
The 2018 United States National Seismic Hazard Model (Petersen et al., 2020), covers the conterminous United States and was developed by the United States Geological Survey (USGS) within the National Seismic Hazard Model Project (NSHMP). The California portion of the the model is covered by the time-independent version of the Uniform California Earthquake Rupture Forecast version 3 (UCERF3; Field et al., 2015).
The model has been translated from its original format into the OpenQuake engine by GEM.
Dataset
Country-Territory Seismic Risk Profiles
License type:
CC BY-NC-SA 4.0
The GEM Foundation has produced a collection of Country/Territory Seismic Risk Profiles that summarize key metrics of seismic risk, to provide stakeholders in risk management an overview of the risk in a region at-a-glance. Each profile presents the following relavant information:
*Social indicators, which provide context to the region in question
*Risk indicators, detailing an occupancy breakdown of exposed value and losses
*A list of the major earthquakes that have impacted the region
*Loss per region, providing a breakdown of average annual losses per Administrative level 1
*Building classes, depicting the major construction materials used in the region
*Loss curves, which provide expected losses per different return periods
*Maps depicting the geographical distribution of hazard, exposure and losses
The risk results are the results of an event-based risk analysis, where 100,000 years of earthquakes are simulated. Three lines of business are considered: residential, commercial, and industrial. Therefore, value or earthquake losses to other building occupancies (e.g., schools, healthcare) and infrastructure are not included.
Dataset
Earthquake Scenario Database
License type:
CC BY-NC-SA 4.0
As a part of the 2023 release of the Global Earthquake Risk Model, the GEM Foundation has compiled a collection of earthquake footprints and consequences from past events, with the hope that the data find wide use in research, education and general interest among many users.
Each entry in the database includes the rupture source file, available information from recording stations and ground-motion models, for use in the OpenQuake Engine. Also, a description of the event and estimates of the impact (in terms of multiple metrics) are reported for each event.
Model
East Asia Exposure
License type:
CC BY-NC-SA 4.0
The Global 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.
The dataset is developed and maintained by the GEM Foundation, using 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 natural disasters with a high concentration of population and building stock.
The East Asia region of the model includes the information pertaining the following countries/territories:
China, Hong_Kong, Japan, Macao, North_Korea, South_Korea, Taiwan
Model
Europe Exposure
License type:
CC BY-NC-SA 4.0
The Global 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.
The dataset is developed and maintained by the GEM Foundation, using 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 natural disasters with a high concentration of population and building stock.
For the case of Europe, the exposure model is built upon the dataset developed by the European Facilities for Earthquake Hazard and Risk (EFEHR). The original information can be consulted in the repository for the European Seismic Risk Model (ESRM20) in [this link](https://gitlab.seismo.ethz.ch/efehr/esrm20_exposure)
The Europe region of the model includes the information pertaining the following countries/territories:
Albania, Andorra, Austria, Belarus, Belgium, Bosnia_and_Herzegovina, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Gibraltar, Greece, Hungary, Iceland, Ireland, Isle_of_Man, Italy, Kosovo, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North_Macedonia, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, Ukraine, United_Kingdom
Model
Europe Hazard
License type:
CC BY 4.0
The Global Hazard Mosaic uses the 2020 European Seismic Hazard Model (ESHM20) to cover the Euro-Mediterranean region. The ESHM20 model uses the same principles as the Seismic Hazard Harmonization in Europe (SHARE) Project model (Woessner et al., 2015), with state-of-the art procedures homogeneously applied for the pan-European region. A fully probabilistic framework was adopted in the hazard model implementation, using input datasets that are harmonized across national borders.
ESHM20 was developed by the Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe (SERA) and funded by the European Union’s Horizon 2020 research and innovation programme. For more details, refer to http://www.sera eu.org/en/home/ and http://www.hazard.efehr.org/en/home/
The model was originally implemented in the OpenQuake engine. In addition to the conterminous pan-European region, this model was used to compute hazard for the Kaliningrad Region of Russia, Iceland, and the Canary Islands. Athough ESHM20 covers Turkey, the Global Hazard Mosaic currently uses the EMME model.
Model
Global Exposure Model
License type:
CC BY-NC-SA 4.0
The Global 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. The dataset is developed and maintained by the GEM Foundation, using a bottom-up approach at the global scale, using national statistics, socio-economic data, and local datasets. The datasets employed to develop this model were provided by national institutions, or developed within the scope of regional programs or bilateral collaborations. The global maps and the underlying databases are based on best available and publicly accessible datasets and models. This model allows the identification of the most common types of construction worldwide, regions with large fractions of informal construction, and areas prone to natural disasters with a high concentration of population and building stock.
The underlying datasets used to create the maps are available for all regions of the world, aggregated at Administrative Level 1 under a CC BY-NC-SA license, or further disaggregated under specific licenses.
The open and downloadable Global Exposure Map (v2023.1) in PNG format, presents the geographic distribution of residential, commercial and industrial buildings. The number of buildings and total replacement cost is presented on a hexagonal grid, with a spacing of 0.30 x 0.36 decimal degrees (approximately 1,000 km2 at the equator). The Global Exposure Map (shapefiles) consists of four layers that depict for each hexagon the number of buildings, the built-up area, the total replacement value and the total population.
Map
Global Seismic Hazard Map
License type:
CC BY-SA 4.0/CC BY-NC-SA 4.0
The Global Earthquake Model (GEM) Global Seismic Hazard Map (version 2023.1) depicts the geographic distribution of the Peak Ground Acceleration (PGA) with a 10% probability of being exceeded in 50 years, computed for reference rock conditions (shear wave velocity, Vs30 , of 760-800 m/s). The map was created by collating maps computed using national and regional probabilistic seismic hazard models developed by various institutions and projects, in collaboration with GEM Foundation scientists.
This version represents an update from the previous release from 2018 and features improvements in most regions of the world, as well as a higher spatial definition (approx. 2.5X) compared to the previous version. For the first time, it is now openly available in raster format as a direct download under a CC BY-NC-SA 4.0 license. An interactive online viewer (CC BY-NC-SA 4.0) is available, as well as a PDF poster and a high resolution PNG (CC BY-SA 4.0) through the links in this page.
A set of comprehensive maps is also available that features up to 20 layers with global coverage, considering PGA and spectral acceleration (SA) for four periods of vibration (0.2s, 0.3s, 0.6s and 1.0s), calculated for reference rock and spatially variable soil conditions, for 2% and 10% probability of exceedance in 50 years. By clicking the "License Request" button, the full set or individual layers can be requested freely for research and public-good applications, or for a licensing fee in the case of commercial applications.
Model
China Financial Loss Model
License type:
Custom license
The China financial loss model has been developed by GEM using public sources of information, such as past seismicity, and geodetic and geologic data for the hazard component, combined with exposure and vulnerability data. The hazard component incorporates both faults and area sources. Earthquake occurrence rates on active faults are based on a new tectonic block model derived from the joint inversion of geodetic and geologic data. The model provides estimates of financial risk to residential, commercial and industrial buildings using GEM’s vulnerability models appropriate to Chinese construction practice. GEM has also developed an exposure model that can be used to estimate total losses to the building stock in addition to portfolio losses. Further technical information can be found in the documentation.
GEM extensively collaborated with its private and public partners to test and validate the model against industry standards in order to produce a new model that represents GEM’s view of risk. The model is available in Oasis and Touchstone formats, as well as through the NASDAQ platform.
Model
China Hazard
License type:
Custom license
The Global Hazard Mosaic coverage of China was developed by the GEM Secretariat. The model covers mainland China and is composed of smooth seismicity sources and fault sources, the latter of which are mostly located in the western half of the territory.
Further information on the model, as well as different versions available, can be consulted in the model documentation.
Model
Colombia Financial Loss Model
License type:
Custom license
The GEM Colombia model is based upon GEM’s regional model for South America first developed from 2013 to 2015 within the South America Risk Assessment (SARA) project funded by the Swiss Re Foundation and updated in 2018. The development process involved dozens of local scientists and engineers from earthquake-prone countries in South America, resulting in an open product for analyzing ground-up loss from ground shaking for residential, commercial, and industrial buildings. This model has been further improved with local information, such as local construction practices, replacement costs and level of enforcement of the seismic regulations. Further technical information can be found in the documentation.
GEM extensively collaborated with its private and public partners to test and validate the model against industry standards in order to produce a new model that represents GEM’s view of risk. The model is available in Oasis and Touchstone formats, as well as through the NASDAQ platform.
Model
Conterminous US Hazard
License type:
Custom license
The 2018 United States National Seismic Hazard Model (Petersen et al., 2020), covers the conterminous United States and was developed by the United States Geological Survey (USGS) within the National Seismic Hazard Model Project (NSHMP). The California portion of the the model is covered by the time-independent version of the Uniform California Earthquake Rupture Forecast version 3 (UCERF3; Field et al., 2015).
The model has been translated from its original format into the OpenQuake engine by GEM.
Dataset
Country-Territory Seismic Risk Profiles
License type:
CC BY-NC-SA 4.0
The GEM Foundation has produced a collection of Country/Territory Seismic Risk Profiles that summarize key metrics of seismic risk, to provide stakeholders in risk management an overview of the risk in a region at-a-glance. Each profile presents the following relavant information:
*Social indicators, which provide context to the region in question
*Risk indicators, detailing an occupancy breakdown of exposed value and losses
*A list of the major earthquakes that have impacted the region
*Loss per region, providing a breakdown of average annual losses per Administrative level 1
*Building classes, depicting the major construction materials used in the region
*Loss curves, which provide expected losses per different return periods
*Maps depicting the geographical distribution of hazard, exposure and losses
The risk results are the results of an event-based risk analysis, where 100,000 years of earthquakes are simulated. Three lines of business are considered: residential, commercial, and industrial. Therefore, value or earthquake losses to other building occupancies (e.g., schools, healthcare) and infrastructure are not included.
Dataset
Earthquake Scenario Database
License type:
CC BY-NC-SA 4.0
As a part of the 2023 release of the Global Earthquake Risk Model, the GEM Foundation has compiled a collection of earthquake footprints and consequences from past events, with the hope that the data find wide use in research, education and general interest among many users.
Each entry in the database includes the rupture source file, available information from recording stations and ground-motion models, for use in the OpenQuake Engine. Also, a description of the event and estimates of the impact (in terms of multiple metrics) are reported for each event.
Model
East Asia Exposure
License type:
CC BY-NC-SA 4.0
The Global 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.
The dataset is developed and maintained by the GEM Foundation, using 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 natural disasters with a high concentration of population and building stock.
The East Asia region of the model includes the information pertaining the following countries/territories:
China, Hong_Kong, Japan, Macao, North_Korea, South_Korea, Taiwan
Model
Europe Exposure
License type:
CC BY-NC-SA 4.0
The Global 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.
The dataset is developed and maintained by the GEM Foundation, using 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 natural disasters with a high concentration of population and building stock.
For the case of Europe, the exposure model is built upon the dataset developed by the European Facilities for Earthquake Hazard and Risk (EFEHR). The original information can be consulted in the repository for the European Seismic Risk Model (ESRM20) in [this link](https://gitlab.seismo.ethz.ch/efehr/esrm20_exposure)
The Europe region of the model includes the information pertaining the following countries/territories:
Albania, Andorra, Austria, Belarus, Belgium, Bosnia_and_Herzegovina, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Gibraltar, Greece, Hungary, Iceland, Ireland, Isle_of_Man, Italy, Kosovo, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North_Macedonia, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, Ukraine, United_Kingdom
Model
Europe Hazard
License type:
CC BY 4.0
The Global Hazard Mosaic uses the 2020 European Seismic Hazard Model (ESHM20) to cover the Euro-Mediterranean region. The ESHM20 model uses the same principles as the Seismic Hazard Harmonization in Europe (SHARE) Project model (Woessner et al., 2015), with state-of-the art procedures homogeneously applied for the pan-European region. A fully probabilistic framework was adopted in the hazard model implementation, using input datasets that are harmonized across national borders.
ESHM20 was developed by the Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe (SERA) and funded by the European Union’s Horizon 2020 research and innovation programme. For more details, refer to http://www.sera eu.org/en/home/ and http://www.hazard.efehr.org/en/home/
The model was originally implemented in the OpenQuake engine. In addition to the conterminous pan-European region, this model was used to compute hazard for the Kaliningrad Region of Russia, Iceland, and the Canary Islands. Athough ESHM20 covers Turkey, the Global Hazard Mosaic currently uses the EMME model.
Model
Global Exposure Model
License type:
CC BY-NC-SA 4.0
The Global 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. The dataset is developed and maintained by the GEM Foundation, using a bottom-up approach at the global scale, using national statistics, socio-economic data, and local datasets. The datasets employed to develop this model were provided by national institutions, or developed within the scope of regional programs or bilateral collaborations. The global maps and the underlying databases are based on best available and publicly accessible datasets and models. This model allows the identification of the most common types of construction worldwide, regions with large fractions of informal construction, and areas prone to natural disasters with a high concentration of population and building stock.
The underlying datasets used to create the maps are available for all regions of the world, aggregated at Administrative Level 1 under a CC BY-NC-SA license, or further disaggregated under specific licenses.
The open and downloadable Global Exposure Map (v2023.1) in PNG format, presents the geographic distribution of residential, commercial and industrial buildings. The number of buildings and total replacement cost is presented on a hexagonal grid, with a spacing of 0.30 x 0.36 decimal degrees (approximately 1,000 km2 at the equator). The Global Exposure Map (shapefiles) consists of four layers that depict for each hexagon the number of buildings, the built-up area, the total replacement value and the total population.
Map
Global Seismic Hazard Map
License type:
CC BY-SA 4.0/CC BY-NC-SA 4.0
The Global Earthquake Model (GEM) Global Seismic Hazard Map (version 2023.1) depicts the geographic distribution of the Peak Ground Acceleration (PGA) with a 10% probability of being exceeded in 50 years, computed for reference rock conditions (shear wave velocity, Vs30 , of 760-800 m/s). The map was created by collating maps computed using national and regional probabilistic seismic hazard models developed by various institutions and projects, in collaboration with GEM Foundation scientists.
This version represents an update from the previous release from 2018 and features improvements in most regions of the world, as well as a higher spatial definition (approx. 2.5X) compared to the previous version. For the first time, it is now openly available in raster format as a direct download under a CC BY-NC-SA 4.0 license. An interactive online viewer (CC BY-NC-SA 4.0) is available, as well as a PDF poster and a high resolution PNG (CC BY-SA 4.0) through the links in this page.
A set of comprehensive maps is also available that features up to 20 layers with global coverage, considering PGA and spectral acceleration (SA) for four periods of vibration (0.2s, 0.3s, 0.6s and 1.0s), calculated for reference rock and spatially variable soil conditions, for 2% and 10% probability of exceedance in 50 years. By clicking the "License Request" button, the full set or individual layers can be requested freely for research and public-good applications, or for a licensing fee in the case of commercial applications.
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