NASA Home Page Goddard Space Flight Center Home Page
NASA Logo - Goddard Space Flight Center   + Visit NASA.gov
a directory of Earth science data and services Global Change Master Directory Web site
header 2 bullet Links bullet FAQ bullet Contact Us bullet Site Map
Home Data Sets Data Services Learn about GCMD_legacy's portal collaborations. Add new dataset or dataservice records to GCMD_legacy What's New Participate Calendar About GCMD_legacy
 
Record Search Query: [Service_Provider: Short_Name='DOI/USGS/GD/EHP']

HASH - Software for Computing Double-Couple Earthquake Focal Mechanisms
 Entry ID: USGS_HASH

[ Get Service ]
[ Update this Record ]

Summary
Abstract: 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. HASH is designed to produce stable high-quality focal mechanisms, and tests the solution sensitivity to possible errors in the first-motion input and the computed take-off angles. The technique is described by Hardebeck and Shearer (BSSA 92, pp. 2264-2276, 2002.) Examples are provided for data in FPFIT input format. The code is designed to be as input-format independent as possible, so only minor editing is needed to use data in other formats.

[Summary provided by the USGS.]
Related URL
Link: GET SERVICE > GET SOFTWARE PACKAGE
Description: Download HASH.
Service Citation
Originators: Jeanne Hardebeck and Peter Shearer
Title: HASH
Provider: USGS
Edition: 1.1
Service Keywords
DATA ANALYSIS AND VISUALIZATION >STATISTICAL APPLICATIONS Parameter Definition

Science Keywords
SOLID EARTH >TECTONICS >EARTHQUAKES >EARTHQUAKE MAGNITUDE/INTENSITY Parameter Definition
SOLID EARTH >TECTONICS >EARTHQUAKES >EARTHQUAKE PREDICTIONS Parameter Definition
ISO Topic Category
GEOSCIENTIFIC INFORMATION
Ancillary Keywords
Earthquakes
P-wave

Service Provider
DOI/USGS/GD/EHP > Earthquake Hazards Program, Geological Division, U.S. Geological Survey, U.S. Department of the Interior Supplemental Info
Service Organization URL: http://earthquake.usgs.gov/

Service Provider Personnel
Name: EARTHQUAKE HAZARDS PROGRAM OFFICE
Contact Address:
12201 Sunrise Valley Drive, MS 905
City: Reston
Province or State: VA
Postal Code: 20192
Country: USA
Distribution Media
Distribution_Media: Online
Distribution_Size: 1 MB
Fees: No fees
Personnel
TYLER B. STEVENS
Role: SERF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
View entire list
Creation and Review Dates
SERF Creation Date: 2008-04-08
SERF Last Revision Date: 2008-04-08
  View Text Only Format
USA dot gov - The U.S. Government's Official Web Portal
+ Privacy Policy and Important Notices
NASA
Webmaster:  Monica Holland
Responsible NASA Official:  Lola Olsen
Last Updated:  May 2013