Welcome to the NHR3 Web Portal

The objective of this portal is to provide you access to models and data related to various natural hazards. The development of the web portal has been funded by different sponsoring agencies and are acknowledged in each application portal. More information about the Natural Hazards Risk and Resiliency Research Center (NHR3) can be found at: www.risksciences.ucla.edu/nhr3

• NGA-Subduction Portal:
  Ground-Motion Record Selection and Download
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  NGA-Subduction (“NGA-Sub”) is a large multidisciplinary, multi-year research program to develop database resources and ground motion models for subduction-zone earthquakes. The NGA-Sub was funded by FM Global, US Geological Survey, California Department of Transportation, and Pacific Gas & Electric Company. The development of this portal was funded by the NHR3, California Department of Transportation, and Pacific Gas & Electric Company.

  The NGA-Sub project entails extensive technical interactions among 34 individuals and organizations from around the world, who are listed in Bozorgnia et al. (2021) paper in the EERI journal Earthquake Spectra. Their efforts and dedications are gratefully acknowledged.

  The ground motion models are based on the processed recordings and supporting source, path, and site metadata from Alaska, Cascadia, Central America and Mexico, Japan, New Zealand, South America, and Taiwan.

  Click here to learn more about the NGA-Subduction Project

  Click here for interactive maps of ALL NGA-Sub events

  The portal has been developed by Dr. Silvia Mazzoni of NHR3, in collaboration with numerous individuals in NGA-Sub, and IT support staff.
  

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• Tsunami Inundation Portal
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  As part of a recently completed research project funded by the five US western states (California, Oregon, Washington, Alaska, and Hawaii) and coordinated by the Pacific Earthquake Engineering Research Center, a database of tsunami inundation was developed for the western States of the US. With a recent funding from the California Department of Transportation, NHR3 has developed this new web portal to access such the database, and illustrate the results. The portal can conveniently be used by researchers and practicing professional to access tsunami-inundation design Values at a structure site.

  Click here to learn more about the Tsunami-Inundation Project

  The portal has been developed by Dr. Silvia Mazzoni of NHR3, in collaboration with numerous other individuals, and IT support staff. NHR3 gratefully appreciates the support and encouragement by Tom Shantz of Caltrans and Prof. Pat Lynett of USC during the development of this portal.
  

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  NHR3 California Directivity-Based Probabilistic Seismic Hazard Analysis Data Portal
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  As part of a recently completed research project funded by the the California Energy Commission (CEC), NHR3 has developed this new web portal to access, and visualize the results of the Probabilistic Seismic Hazard Analysis. The portal can conveniently be used by researchers and practicing professional.

  The portal has been developed by Dr. Silvia Mazzoni of NHR3, in collaboration with the researchers who performed the study: Dr. Linda Al Atik, Dr. Nick Gregor and Prof. Yousef Bozorgnia.