Gravity and magnetic surveys over the Santa Rita fault system, southeastern Arizona

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Description Gravity station data and hand-held magnetometer measurements with analysis and description of methodology.
Originators Hegmann, Mary
Publication U.S. Geological Survey Open-File Report 01-503

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Principal facts for gravity stations, Appendix A of the report

Label Definition
STA Gravity station identification
LATITUDE Geographic latitude
LONGITUDE Geographic longitude
ELEV_UNITS Units of elevation
ELEVATION Elevation of surface at the site
OBS_GRAV Observed gravity
FR_AIR_AN Free air anomaly
BOUG_SIMP Simple Bouguer anomaly
BOUG_COMPL Complete Bouguer anomaly
IZT_CORR Inner terrain correction
TOT_CORR Total terrain correction
UNCER_CBGA Uncertainty in the complete Bouguer anomaly


Handheld magnetometer measurements, Appendix B of the report

Label Definition
STATION Unique identifier for the measurement station
EASTING_M East-west coordinate in UTM zone 12N, NAD27
NORTHING_M North-south coordinate in UTM zone 12N, NAD27
AVE_NT Reading average
CORR_SRA01 Reading corrected for diurnal variation to base station sra-01
IGRF_NT IGRF reference field value
CORR_IGRF Anomaly calculated with respect to IGRF value
COMMENTS Additional information about the station