Software

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.

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).

A uniform ANSS standard for seismic parametric data.

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.

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

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

Models, Codes and Catalogs used to produce the National Seismic Hazard Maps.

OpenSHA is an effort to develop object-oriented, web- & GUI-enabled, open-source, and freely available code for conducting Seismic Hazard Analyses (SHA).

P PHASEP ICKER is a powerful tool for automatically picking P-phase onsets with high precision without requiring detection interval or threshold settings.

The Product Distribution Layer (PDL) is a USGS platform for receiving earthquake data over the Internet in near-real time.

PQLX is open-source software system for evaluating seismic station performance and data quality.

HASH is a Fortran 77 code that computes double-couple earthquake focal mechanisms from P-wave first motion polarity observations, and optionally S/P amplitude ratios.