Earthquake Hazards Program
Software
Downloadable software for earthquake research. USGS uses GitHub for all new software development, as well as open sourcing older software as time allows.
See how our applications work and collaborate with us at USGS GitHub.
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.
Slab2
A three-dimensional compilation of global subduction geometries, separated into regional models for each major subduction zone.
SLAMMER - Seismic Landslide Movement Modeled using Earthquake Records
SLAMMER is a Java program that facilitates performing a variety of sliding-block analyses to evaluate seismic slope performance.
STATIC1D
These programs solve the equations of static equilibrium in a spherically layered isotropic medium using a decomposition into spheroidal and toroidal motions.
PS2FF
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).
SATSI
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.
Quakeml
A uniform ANSS standard for seismic parametric data.
MacR1D
MacR1D is a one-dimensional seismic travel-time calculator for Macintosh.
OpenSHA
OpenSHA is an effort to develop object-oriented, web- & GUI-enabled, open-source, and freely available code for conducting Seismic Hazard Analyses (SHA).
NSHMP Models, Codes and Catalogs - National Seismic Hazard Mapping Project
Models, Codes and Catalogs used to produce the National Seismic Hazard Maps.
PDL
The Product Distribution Layer (PDL) is a USGS platform for receiving earthquake data over the Internet in near-real time.
P-Phase Picker
PPHASEPICKER is a powerful tool for automatically picking P-phase onsets with high precision without requiring detection interval or threshold settings.