Skip to main content
U.S. flag

An official website of the United States government

SYNthetic DEPTH Phase Modeling (SYNDEPTH)

April 6, 2023

This python code models event depths by comparing high-frequency (~0.5-0.04 Hz) teleseismic body-wave waveforms to synthetics. High-frequency body waves contain depth information, primarily in the form of depth phases. While lower frequencies are used to generate moment tensor solutions, high-frequency body waves allow for more accurate estimates of source depth. A moment tensor solution must exist for an event to perform the syndepth modeling. This code takes an NEIC event ID, grabs parametric data, including moment tensor information from the COMCAT database, grabs waveform data, and performs a search to find the best fitting source depth and apparent event source-time function. Generally, this tool is most appropriate for events between ~M5.5-7.5, which are globally observed and have relatively short source-time functions.

Publication Year 2023
Title SYNthetic DEPTH Phase Modeling (SYNDEPTH)
DOI 10.5066/P924LDLT
Authors William L Yeck, John Patton
Product Type Software Release
Record Source USGS Digital Object Identifier Catalog
USGS Organization Earthquake Hazards Program