Directory Identifier: GRAVCD-anwr
Directory Title: ANWR and Alaska Peninsula Gravity
Data
Principal Investigator: Dr. David F. Barnes
Contributing Organization: U.S. Geological Survey
Branch of Geophysics
Mail Stop 989
345 Middlefield Road
Menlo Park, CA 94025
Summary: The gravity station data (1252 records)
were compiled by the U.S. Geological Survey and the State of Alaska Division
of Geological & Geophysical Surveys. This data base was received in
August, 1984. Principal gravity parameters include Free-air Anomalies and
Simple Bouguer Anomalies (no terrain correction applied) for the Alaska
Peninsula. The observed gravity values are referenced to the International
Gravity Standardization Net 1971 (IGSN 71). The gravity anomaly computation
uses the Geodetic Reference System 1967 (GRS 67) theoretical gravity formula.
The data are randomly distributed within the boundaries of northeast Alaska
including the Arctic National Wildlife Range (ANWR) and the Alaska Peninsula.
Note that the original USGS Open File Report by D. F. Barnes mentions the
use of the 1931 International Ellipsoid for gravity reduction but this
is believed to have subsequently been changed to the GRS 67 system.
Return to the Regional Data Set Table
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