Software
An official USGS software project is code reviewed and approved at the bureau-level for distribution.
Filter Total Items: 916
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.