West Flank Coso, CA FORGE Magnetotelluric Inversion

Abstract
The Coso Magnetotelluric (MT) dataset of which the West Flank FORGE MT data is a subset, was collected by Schlumberger / WesternGeco and initially processed by the WesternGeco GeoSolutions Integrated EM Center of Excellence in Milan, Italy. The 2011 data was based on 99 soundings that were centered on the West Flank geothermal prospect. The new soundings along with previous data from 2003 and 2006 were incorporated into a 3D inversion. Full impedance tensor data were inverted in the 1-3000 Hz range. The modelling report notes several noise sources, specifically the DC powerline that is 20,000 feet west of the survey area, and may have affected data in the 0.02 to 10 Hz range. Model cell dimensions of 450 x 450 x 65 feet were used to avoid computational instability in the 3D model. The fit between calculated and observed MT values for the final model run had an RMS value of 1.807. The included figure from the WesternGeco report shows the sounding locations from the 2011, 2006 and 2003 surveys.
1 Resource

Related Datasets

Datasets associated with the same DOE project
  Submission Name Resources Submitted Status

Additional Info

DOE Project Name: Frontier Observatory for Research in Geothermal Energy: Coso, California
DOE Project Number: EE0007156
DOE Project Lead: Lauren Boyd
DOI: 10.15121/1287567
Last Updated: 10 months ago
May
2016
Data from May, 2016
Submitted May 16, 2016

Sandia National Laboratories

Contact

505.284.1230

Authors

This submission does not list any authors.

Keywords

geothermal, FORGE, EGS, MT, West Flank, Inversion, 3D, survey map, magnetotelluric

Status

Publicly accessible License 
Submission Downloads