Researcher ORCID Identifier
Dataset Creation Date
University of Kentucky Libraries
This data set contains Central and Eastern U.S. Magnetic Anomaly, DRTP, Tilt Derivative, and Analytic Signal Amplitude Products ultimately derived from Ravat, D., Finn, C., Hill, P., Kucks, R., Phillips, J., Blakely, R., Bouligand, C., Sabaka, T., Elshayat, A., Aref, A., and Elawadi, E., 2009, A preliminary, full spectrum, magnetic anomaly grid of the United States with improved long wavelengths for studying continental dynamics--A website for distribution of data: U.S. Geological Survey Open- File Report 2009–1258, 2 p.
Creative Commons Public Domain CC0
There are 16777222 lines in this database including the first 6 lines of header information.
The data are comma-separated and the field descriptions as given below. Fields with asterix in TMAG should be masked (and not used).
X: DNAG projected X in meters
Y: DNAG projected Y in meters
Deg_DRTP_TDR: Tilt derivative of differentially reduced to pole magnetic anomaly (geometric
DRTP: Differentially reduced to pole magnetic anomaly data (nT)
DRTP_HD_TDR: Horizontal derivative of tilt derivative (radians) of differentially reduced to pole magnetic anomaly
DRTP_TDR: Tilt derivative of differentially reduced to pole magnetic anomaly (radians)
Lat: Latitude in NAD27 horizontal datum (decimal degrees)
Long: Longitude (decimal degrees)
TMAG: Total intensity magnetic anomaly (nT)
MAG_AAS: Amplitude of analytic signal (nT/m)
TMAGwithNaN: As in TMAG with internal databases differences – this field is redundant and should not be used.
Central and Eastern U.S.
U. S. Geological Survey
Ravat, D., 2022, Magnetic Anomaly Data Products of the Central and Eastern United