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Magnetotelluric Data from the San Andreas Fault, Parkfield CA, 1990: ASCII Data


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Rodriguez, B.D., Johnson M.R., Sampson J., Falvo, C.I.P., Enns, K.D., Bell, T.M. and Everette, A.L., 2018, Magnetotelluric Data from the San Andreas Fault, Parkfield CA, 1990: U.S. Geological Survey data release,


The ASCII data included in this data release are the intermediary files between the original binary and final EDI formatted files. These ASCII formatted time series and cross power files are what the DaR project acquired and converted into EDI format for this data release using open-source software developed by the DaR project team (Wight, D.E., 1988). The Python code, supplemental resources, and associated readme are available as a USGS software release (


Attached Files

Click on title to download individual files attached to this item.
“Time Series Data (ASCII files)”
3.2 MB application/zip
“Cross Powers Data (ASCII files)”
463.95 KB application/zip
“Supplemental Resources”
21.8 MB application/zip


All materials included on the ASCII ScienceBase page provide information that the DaR team used to develop Python code that accurately translates the ASCII data to EDI format. Each station in the overall survey was taken at a single point. While the MT files are not in vector format all measurements are referenced to the location of the station.

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