Magnetotelluric Data from the Gabbs Valley Region, Nevada, 2020

Dates

Publication Date: 2021-09-08
Start Date: 2020-08-13
End Date: 2020-08-14

Citation

Peacock, J.R., Siler, D.L., Dean, B.J., and Zielinski, L.A., 2021, Magnetotelluric Data from the Gabbs Valley Region, Nevada, 2020: U.S. Geological Survey data release, https://doi.org/10.5066/P9GZ9Z56.

Summary

This data set consists of 59 wideband magnetotelluric (MT) stations collected by the U.S. Geological Survey in July and August of 2020 as part of a 1-year project funded by the Energy Resources Program of the U.S. Geological Survey to demonstrate full crustal control on geothermal systems in the Great Basin. Each station had 5 components, 3 orthogonal magnetic induction coils and 2 horizontal orthogonal electric dipoles. Data were collected for an average of 18 hours on a repeating schedule of alternating sampling rates of 256 samples/second for 7 hours and 50 minutes and 4096 samples/second for 10 minutes. The schedules were set such that each station was recording the same schedule to allow for remote reference processing. Data were [...]

Summary

This data set consists of 59 wideband magnetotelluric (MT) stations collected by the U.S. Geological Survey in July and August of 2020 as part of a 1-year project funded by the Energy Resources Program of the U.S. Geological Survey to demonstrate full crustal control on geothermal systems in the Great Basin. Each station had 5 components, 3 orthogonal magnetic induction coils and 2 horizontal orthogonal electric dipoles. Data were collected for an average of 18 hours on a repeating schedule of alternating sampling rates of 256 samples/second for 7 hours and 50 minutes and 4096 samples/second for 10 minutes. The schedules were set such that each station was recording the same schedule to allow for remote reference processing. Data were processed with a bounded-influence robust remote reference processing scheme (BIRRP v5.2.1, Chave and Thomson, 2004). Data quality is good for periods of 0.007 - 2048 with some noise in the higher periods and less robust estimates at the longer periods. Files included in this publication include measured electric- and magnetic-field time series (.h5 files) as well as estimated impedance and vertical-magnetic field transfer functions (.edi files). An image of the MT response is supplied (.png file) where the impedance tensor is plotted on the to two panels, the induction vectors in the middle panel (up is geographic North), and the phase tensor in the bottom panel (up is geographic North). The real induction vectors point towards strong conductors. Phase tensor ellipses align in the direction of electrical current flow and warmer color represents the subsurface becoming more conductive and cooler colors more resistive.

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Contacts

Point of Contact :: Jared R Peacock, U.S. Geological Survey
Originator :: Jared R Peacock, Drew L Siler, Branden J Dean, Laurie A Zielinski
Metadata Contact :: Jared R Peacock, U.S. Geological Survey
Funder :: Energy Resources Program
Distributor :: U.S. Geological Survey - ScienceBase
USGS Mission Area :: Energy and Minerals
SDC Data Owner :: Geology, Minerals, Energy, and Geophysics Science Center

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gv_survey_v2.xml Original FGDC Metadata	View	28.14 KB	application/fgdc+xml
gv_final_edi.zip “All EDI files”		377.4 KB	application/zip
gv_final_png.zip “All Images of MT responses”		16.84 MB	application/zip

Shapefile: gv_mt_station_locations.zip
gv_mt_station_locations.cpg		10 Bytes
gv_mt_station_locations.dbf		45 KB
gv_mt_station_locations.prj		145 Bytes
gv_mt_station_locations.shp		1.71 KB
gv_mt_station_locations.shx		572 Bytes

Purpose

The purpose of this data release is provide MT station locations, time-series data, and processed transfer functions to the public.

Magnetotelluric Data from the Gabbs Valley Region, Nevada, 2020

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