Gravity Data Format

Long Valley Caldera Gravity Data

FGDC metadata

The U.S. Geological Survey (USGS) occupied the network every summer from 1980 to 1985. The Crustal Deformation Group (Stanford University) re-occupied the network in the summer of 1998 and 1999.

This report contains both the USGS and Stanford data from the gravity surveys. The data are provided in ASCII XYZ (tab-separated value; .txt) that can be used in a number of GIS and visualization software packages.

------------------------------------------------------------------------

ASCII XYZ format

The data are available in tab-separated value (.txt) ASCII XYZ (X , Y, value) format.

Directory	MonitoringData/Gravity/SpreadsheetFormatData
File	GravitySurveys.txt Gravity surveys from 1980 to 1999. All data are given in mGal and errors are 1 StDev.

Map projection	UTM
Datum	NAD27
Units	Meters
Z units [gravity]	mGal

ArcView shapefiles format

Directory	MonitoringData/Gravity
File	Gravity.shp Gravity surveys from 1980 to 1999. All data are given in mGal and errors are 1 StDev.

Map projection	UTM
Datum	NAD27
Units	Meters
Z units [gravity]	mGal

Download files to desktop
1. Go to the MonitoringData/Gravity folder to download the data

| Top | Home | Gravity network |