Natural Hazards

Every year in the United States, natural hazard events threaten lives and livelihoods, resulting in deaths and billions of dollars in damage. Access the scientific data collected from monitoring, assessing, and conducting targeted research on a wide range of natural hazards.

Filter Total Items: 54
Date published: January 16, 2021


lsforce is a Python-based single-force seismic inversion framework for massive landslides.

Date published: August 27, 2020

Ash3D provides forecasts of ash clouds and ashfall.

Ash 3D is a three-dimensional simulation of volcanic-ash dispersion that uses time-varying wind fields and other meteorological properties to calculate where airborne ash is transported under current or historical atmospheric conditions

Date published: August 19, 2020

Cliff Feature Delineation Tool and Baseline Builder

The Cliff Feature Delineation Tool scans digital elevation models (DEM) to delineate features on seacliffs like the cliff top, midline, toe, and convexities/concavities on the cliff face, outputting linear features as polylines and point shapefiles. 

Date published: February 24, 2020


Hydrotherm is a computer code for three-dimensional simulation of multiphase groundwater flow and heat transport in the temperature range of 0 to 1200 degrees Celsius and the pressure range of 1 to 1000 MPa.

Date published: March 7, 2019


A three-dimensional compilation of global subduction geometries, separated into regional models for each major subduction zone.

Date published: March 7, 2019


These programs solve the equations of static equilibrium in a spherically layered isotropic medium using a decomposition into spheroidal and toroidal motions.

Date published: March 7, 2019

strainz17: Earthquake Strains and Rotations

Strainz17.m is a MATLAB-language function for deriving the best-fitting uniform strain tensor and rigid body rotation as functions of time, based on ground displacement or velocity recordings made on an array of sensors.

Date published: March 6, 2019


Produce approximated finite fault distances and variance corrections given point source information, for example, Repi (epcentral distance) to Rjb (Joyner-Boore distance) or Rrup (closest distance to rupture).

Date published: March 6, 2019


SATSI (Spatial And Temporal Stress Inversion) is a modified version of Michael's (JGR 1984, 1987) code that inverts focal mechanism data for a spatially and/or temporally varying stress field.

Date published: March 6, 2019


A uniform ANSS standard for seismic parametric data.

Date published: March 6, 2019


MacRay is a general purpose two-dimensional seismic ray-tracer for Macintosh.

Date published: March 6, 2019


MacR1D is a one-dimensional seismic travel-time calculator for Macintosh.