News Guy Carpenter and WTW upgrade partnerships with GEM to Governor Sponsors By: Dec 6, 2022 Share Facebook LinkedIn Willis Towers Watson and Guy Carpenter (with participation extended to its parent company, Marsh McLennan) have both upgraded their sponsorship agreements from Advisor Sponsors to Governor Sponsors. The change provides each organisation with a voting position on the Governing Board. It also provides an opportunity for them to allocate a portion of their sponsorship funds toward projects that are of particular interest to them, and are in line with GEM’s strategic priorities. Willis Towers Watson is one of the founding members of GEM from the private sector. GEM and WTW have been working together for more than a decade to develop and promote a better understanding of earthquake risk through research and the application of science. WTW is now represented by Stuart Callam, Programme Director, WTW Research Network & Climate and Resilience Hub. We thank Hélène Galy, Head of Willis Research Network (WRN), for representing WTW as an Advisor Sponsor for the past 4 years and for developing a strong collaboration between GEM and the WRN during that time. Guy Carpenter joined GEM in 2019 as Advisor Sponsor. Over the last three years, Guy Carpenter and GEM have collaborated to enhance both organisations’ earthquake risk analysis by sharing access to specific technical and scientific expertise, and also contributed to a better understanding of earthquake risk for the benefit of society at large. In the new agreement, Guy Carpenter and the broader interests of MarshMcLennan, are represented by Matthew Eagle, Head of Global Model Solutions and Advisory at Guy Carpenter. GEM offers flexible mechanisms to enable potential partners to contribute to its ongoing and future work programs. Partners and collaborators can enter into sponsorships, project partnerships, and service agreements, and can select the level of engagement based on their needs and requirements. GEM’s sponsorship structure and fees have been designed to incentivize the participation of public and private organizations. Public Governors may propose to contribute directly to the work program via an in-kind project to offset the *GERD-based sponsorship contribution. For more details on how to support our work, please visit: https://www.globalquakemodel.org/get-involved . No images found. GALLERY 1/0 Gallery VIDEO RELATED CONTENTS

You have chosen to request a demo on: Global Map of Road Exposure to Ground Shaking and Liquefaction First Name Last Name Email Company or Institution Name Country Sector Provide Details I accept the license terms and the conditions of products use. Email us at product@globalquakemodel.org if you're experiencing problems submitting this form or if you have any inquiries. Thank you. Request Thanks for submitting! You will be contacted as soon as possible Add answer here

Repository with the inventory of residential, commercial and industrial buildings in the Caribbean and Central America Products Caribbean & Central America Exposure Repository with the inventory of residential, commercial and industrial buildings in the Caribbean and Central America Share Facebook LinkedIn Description 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 Caribbean and Central America region of the model includes the information pertaining the following countries/territories: Anguilla, Antigua_and_Barbuda, Aruba, Bahamas, Barbados, Belize, British_Virgin_Islands, Cayman_Islands, Costa_Rica, Cuba, Dominica, Dominican_Republic, El_Salvador, Grenada, Guadeloupe, Guatemala, Haiti, Honduras, Jamaica, Martinique, Montserrat, Nicaragua, Panama, Puerto_Rico, Saint_Kitts_and_Nevis, Saint_Lucia, Saint_Vincent_and_the_Grenadines, Trinidad_and_Tobago, Turks_and_Caicos_Islands, US_Virgin_Islands How to cite this work If you make use of this work, please cite both the publication and the data. Publication: Yepes-Estrada, C., Calderon, A., Costa, C., Crowley, H., Dabbeek, J., Hoyos, M., Martins, L., Paul, N., Rao, A., Silva, V. (2023). Global Building Exposure Model for Earthquake Risk Assessment. Earthquake Spectra. doi:10.1177/87552930231194048 Data: Yepes-Estrada, C., Calderon, A., Costa, C., Crowley, H., Rao, A., Paul, N., & Silva, V. (2026). Global Exposure Model (2026.0.0). Zenodo. https://doi.org/10.5281/zenodo.8117363. Available Versions An open version (v2026.1) of the model, agreggated at Administrative Level 1, is available for direct download under a CC BY-NC-SA 4.0 license. Users interested in this version can click the "Open Repository" button in the right panel to access the information. The full version for any country/territory, at the highest resolution available, can be requested by clicking on the "License Request", where a specific license 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 v2026.0 License CC BY-NC-SA 4.0 Available resources Open Repository 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 GEM Building Taxonomy Global Seismic Embodied Carbon Risk Global Seismic Hazard Map Global Liquefaction Hazard Global Exposure Model Global Vulnerability Model Global Map of Road Exposure to Ground Shaking and Liquefaction Global Seismic Risk Map Country-Territory Seismic Risk Profiles Related publications Exposure forecasting for seismic risk estimation: Application to Costa Rica Read More Probabilistic Seismic Risk Assessment for Costa Rica 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.

You have chosen to request a demo on: Vulnerability Modeller's Toolkit (oq-vmtk) First Name Last Name Email Company or Institution Name Country Sector Provide Details I accept the license terms and the conditions of products use. Email us at product@globalquakemodel.org if you're experiencing problems submitting this form or if you have any inquiries. Thank you. Request Thanks for submitting! You will be contacted as soon as possible Add answer here

Publications Report on the workshop for the participatory evaluation of earthquake risk and resilience in Addis Ababa, Ethiopia Share Facebook LinkedIn Download 2017 | Report An essential step to understand and enhance the resilience of cities to earthquakes is to measure the concept. Measurement is vital not only to evaluate and benchmark the baseline conditions of what makes communities resilient but also to help communities to understand the factors that lead to losses and the differential ability of populations across and within communities to recover when damaging events occur. To address this, GEM and the United States Agency for International Development (USAID) collaborated to facilitate the Resilience Performance Scorecard (RPS) workshop in Addis Ababa, Ethiopia. The RPS is a multi-level and multi-scale self-evaluation tool that empowers stakeholders to assess earthquake resilience parameters based primarily on qualitative information. Here, an interactive voting system is used in a workshop setting to identify priorities where activities may be pertinent for earthquake risk reduction or where existing initiatives may be improved to increase earthquake resilience in different sectors of society. Six dimensions of earthquake resilience are encompassed to address key areas that mainstream risk reduction namely; planning and decision-making processes, 10 social capacity, awareness and advocacy, legal and institutional arrangements, planning and regulation, critical infrastructure and services, and emergency preparedness and response.

You have chosen to request a demo on: Central Asia Exposure First Name Last Name Email Company or Institution Name Country Sector Provide Details I accept the license terms and the conditions of products use. Email us at product@globalquakemodel.org if you're experiencing problems submitting this form or if you have any inquiries. Thank you. Request Thanks for submitting! You will be contacted as soon as possible Add answer here

News Towards Improved Probabilistic Seismic Hazard Assessment for Bangladesh By: May 21, 2020 Share Facebook LinkedIn A team of scientists from the University of Dhaka, Bangladesh led by Dewan Md. Enamul Haque, Assistant Professor at Department of Disaster Science and Management, Faculty of Earth and Environmental Sciences published a paper Towards Improved Probabilistic Seismic Hazard Assessment for Bangladesh . The authors used GEM’s OQ-engine to develop the PSHA for Bangladesh. The study aims to build on the existing knowledge and improve the overall PSHA results by modifying source, path and site characteristics for Bangladesh. The ground motions - PGA and SA (at 0.2, 1.0 and 2.0 s) were computed using GEM’s OpenQuake and presented in form of hazard maps for 2% and 10% probabilities of exceedance in 50 years as well as mean hazard curves and uniform hazard spectra. The lead author, Asst. Prof. Dewan Haque learned about the OQ software from GEM’s website, and is actively using it for modelling and research work. He found the software easy to use and said he would definitely recommend it to others. “I’m satisfied and happy with my experience with the OQ-engine. Comparing it with other hazard and risk modeling software, I believe that it is better than most software out there. I found the one of the most valuable features of the engine,” says Asst. Prof. Dewan Haque. He further adds that “it is easy to use” but pointed out the OQ-engine would better suit his needs if a “step by step manual on how to upgrade the tools are shared upon the release of new versions”. The OpenQuake Engine is GEM’s state-of-the-art, open-source software collaboratively developed for earthquake hazard and risk modelling. The functionality to analyze hazards 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. GEM continues to strive to provide open products and software to disaster risk reduction professionals, emergency responders, and scientists and researchers around the world. To learn more or to download the latest version, click here . No images found. GALLERY 1/0 Gallery VIDEO RELATED CONTENTS

You have chosen to request a demo on: Taiwan Hazard First Name Last Name Email Company or Institution Name Country Sector Provide Details I accept the license terms and the conditions of products use. Email us at product@globalquakemodel.org if you're experiencing problems submitting this form or if you have any inquiries. Thank you. Request Thanks for submitting! You will be contacted as soon as possible Add answer here

Publications Variable resolution probabilistic modeling of residential exposure and vulnerability for risk applications Share Facebook LinkedIn Download 2020 | Peer-reviewed In risk assessment, the exposure component describes the elements exposed to the natural hazards and susceptible to damage or loss, while the vulnerability component defines the likelihood to incur damage or loss conditional on a given level of hazard intensity. In this article, we propose a novel adaptive approach to exposure modeling which exploits Dirichlet-Multinomial Bayesian updating to implement the incremental assimilation of sparse in situ survey data into probabilistic models described by compositions (proportions). This methodology is complemented by the introduction of a custom spatial aggregation support based on variable-resolution Central Voronoidal Tessellations. The proposed methodology allows for a more consistent integration of empirical observations, typically from engineering surveys, into large-scale models that can also efficiently exploit expert-elicited knowledge. The resulting models are described in a probabilistic framework, and as such allow for a more thorough analysis of the underlying uncertainty. The proposed approach is applied and discussed in five countries in Central Asia.

OPENQUAKE ENGINE CERTIFICATION Promoting global professional standards in seismic hazard and risk modelling and building a community of certified OpenQuake Engine users committed to transparency and collaboration. OQ-engine Certified User badge Share Facebook LinkedIn Certification Information Certified OQ Users List Who it’s for At present, the certification programme is for analysts, researchers, modellers, engineers and DRR practitioners who run scenario analyses with the OpenQuake Engine and need a recognised, skills-based credential. Additional certification tracks (e.g., hazard-PSHA, risk-PSRA) are planned. This webpage will list timelines and any updates. Current pathway Certification is currently available through the annual GEM-EGU Summer School in Aveiro, Portugal (launched 2025) and the GEM course offered as part of the ROSE Masters and PhD programmes at the IUSS Pavia, Italy. Online options are planned and may be introduced if there is sufficient demand in the future. Contact us if you are interested in a remote certification option. Contact Us How certification works (step-by-step) 1. Enrol/Register in one of the two approved courses mentioned above 2. Complete the course and take the assessment test. The assessment has two parts: a. Knowledge check – short questions on input models, scenario hazard and risk concepts and OQ calculators. b. Practical task – build and run an OQ scenario; submit inputs, config, logs, and outputs (damage/loss maps/tables). 3. Evaluation and result Submissions are marked against a published rubric (correctness, reproducibility, interpretation, communication). Candidates meeting the competency threshold are awarded certification. 4. Credential and validity Successful candidates receive a digital certificate and badge, valid for three (3) years. 5. Directory and verification (Opt-in) Appear in GEM’s public registry of certified OQ users; organisations can verify certificates via a unique ID or through LinkedIn’s Certifications and Licenses. 6. Recertification Before expiry, renew by either: a. completing a short recertification exercise/quiz; b. demonstrating continuing professional development (e.g., attendance to OQ training workshops/webinars) plus a brief competency check. c. attend again one of the certification courses. Full details will be posted on this webpage soon. What you’ll be certified to do Configure and run OpenQuake Engine scenario analyses (covering ground shaking and earthquake-triggered liquefaction and landslide hazards, as well as damage and loss metrics). Create reproducible outputs (maps/tables) and explain input models, assumptions, and limitations to decision-makers. OpenQuake Engine Certified Users This section will feature the list of individuals who have completed the OpenQuake Certification Programme for Scenario Analyses. Each certified user has demonstrated competence in running and interpreting scenario risk analyses using the OpenQuake Engine. The list is currently under construction and will be updated as new certifications are awarded. List of Certified OpenQuake Engine Users Name Certification Track Status Completed Course Abdelhamid Allaoui Scenario Assessment Valid EGU-GEM Summer School 2025 Alexander Koelzer Scenario Assessment Valid EGU-GEM Summer School 2025 Alexandru Tiganescu Scenario Assessment Valid EGU-GEM Summer School 2025 Annisa Rizqilana Scenario Assessment Valid EGU-GEM Summer School 2025 Atefe Darzi Scenario Assessment Valid EGU-GEM Summer School 2025 Aurora Lambiasse Scenario Assessment Valid EGU-GEM Summer School 2025 Binaya Kumar Lamichhane Scenario Assessment Valid EGU-GEM Summer School 2025 Binita Shahi Scenario Assessment Valid EGU-GEM Summer School 2026 Bogdan Gheorghe Scenario Assessment Valid EGU-GEM Summer School 2026 Daniel Alejandro Caicedo Diaz Scenario Assessment Valid EGU-GEM Summer School 2025 Daniel Dreier Scenario Assessment Valid EGU-GEM Summer School 2025 Daniel Tomic Scenario Assessment Valid EGU-GEM Summer School 2025 Dr. Mayuri Borah Scenario Assessment Valid EGU-GEM Summer School 2026 Genio Lay da Silva Scenario Assessment Valid EGU-GEM Summer School 2026 Hasan Efendi Scenario Assessment Valid EGU-GEM Summer School 2026 Houda Delleci Scenario Assessment Valid EGU-GEM Summer School 2025 Jarod Domenge Scenario Assessment Valid EGU-GEM Summer School 2025 Jorge Luis Paredes Estacio Scenario Assessment Valid EGU-GEM Summer School 2026 Katia Veronica Vila Mamani Scenario Assessment Valid EGU-GEM Summer School 2026 Khatereh Saghatforoush Scenario Assessment Valid EGU-GEM Summer School 2025 Lallawmawma Chawnghlut Scenario Assessment Valid EGU-GEM Summer School 2026 Leonardo Mateus Scenario Assessment Valid EGU-GEM Summer School 2026 Lisselyn Cordova Arias Scenario Assessment Valid EGU-GEM Summer School 2026 Maaike Fonteijn Scenario Assessment Valid EGU-GEM Summer School 2025 Octavi Gómez Novell Scenario Assessment Valid EGU-GEM Summer School 2025 Onur Ulku Scenario Assessment Valid EGU-GEM Summer School 2026 Rachel Preca Trapani Scenario Assessment Valid EGU-GEM Summer School 2025 S Vishal Gupta Scenario Assessment Valid EGU-GEM Summer School 2025 Sagar Khanal Scenario Assessment Valid EGU-GEM Summer School 2026 Seyhan Okuyan Akcan Scenario Assessment Valid EGU-GEM Summer School 2026