Software
An official USGS software project is code reviewed and approved at the bureau-level for distribution.
Filter Total Items: 890
MacR1D MacR1D
MacR1D is a one-dimensional seismic travel-time calculator for Macintosh.
MacRay MacRay
MacRay is a general purpose two-dimensional seismic ray-tracer for Macintosh.
NSHMP Models, Codes and Catalogs - National Seismic Hazard Mapping Project NSHMP Models, Codes and Catalogs - National Seismic Hazard Mapping Project
Models, Codes and Catalogs used to produce the National Seismic Hazard Maps.
OpenSHA OpenSHA
OpenSHA is an effort to develop object-oriented, web- & GUI-enabled, open-source, and freely available code for conducting Seismic Hazard Analyses (SHA).
P-Phase Picker P-Phase Picker
P PHASEP ICKER is a powerful tool for automatically picking P-phase onsets with high precision without requiring detection interval or threshold settings.
PDL PDL
The Product Distribution Layer (PDL) is a USGS platform for receiving earthquake data over the Internet in near-real time.
PQLX: A Software Tool to Evaluate Seismic Station Performance PQLX: A Software Tool to Evaluate Seismic Station Performance
PQLX is open-source software system for evaluating seismic station performance and data quality.
HASH 1.2 HASH 1.2
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.
HypoDD HypoDD
HypoDD is a Fortran computer program package for relocating earthquakes with the double-difference (DD) algorithm of Waldhauser and Ellsworth (2000).
HYPOINVERSE Earthquake Location HYPOINVERSE Earthquake Location
HYPOINVERSE2000 determines earthquake locations and magnitudes from seismic network data like first-arrival P and S arrival times, amplitudes and coda durations.
ComCat Wrapper Libraries ComCat Wrapper Libraries
Bulk access via scripts, programs, and tools for obtaining specific products from ComCat (the earthquake catalog).
Direct Green's Function Synthetic Seismograms Direct Green's Function Synthetic Seismograms
These programs are an implementation of the Direct Green’s Function method described by Friederich and Dalkolmo (1995) and Dalkolmo (1993).