West Flank Coso FORGE: Magnetotelluric Inversion

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.

Data and Resources

Field Value
DOI 10.15121/1287567
accessLevel public
bureauCode {019:20}
catalog_@context https://openei.org/data.json
catalog_@id https://openei.org/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
dataQuality true
identifier https://data.openei.org/submissions/3510
issued 2016-05-16T06:00:00Z
landingPage https://gdr.openei.org/submissions/808
license https://creativecommons.org/licenses/by/4.0/
modified 2019-11-15T01:11:50Z
old-spatial {"type":"Polygon","coordinates":[[[-118.21138164063,35.670911408642],[-117.43145351562,35.670911408642],[-117.43145351562,36.429464285107],[-118.21138164063,36.429464285107],[-118.21138164063,35.670911408642]]]}
programCode {019:006}
projectLead Lauren Boyd
projectNumber EE0007156
projectTitle Frontier Observatory for Research in Geothermal Energy: Coso, California
publisher Sandia National Laboratories
resource-type Dataset
source_datajson_identifier true
source_hash 6884cdfcff6eb85edddb40658e90511d20f30064
source_schema_version 1.1
spatial {"type":"Polygon","coordinates":[[[-118.21138164063,35.670911408642],[-117.43145351562,35.670911408642],[-117.43145351562,36.429464285107],[-118.21138164063,36.429464285107],[-118.21138164063,35.670911408642]]]}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • 3d
  • amerigeo
  • amerigeoss
  • ckan
  • coso
  • egs
  • forge
  • geo
  • geophysics
  • geoss
  • geothermal
  • inverse
  • inversion
  • magnetotelluric
  • model
  • mt
  • national
  • north-america
  • report
  • survey-map
  • united-states
  • west-flank
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer Doug Blankenship
maintainer_email dblank@sandia.gov
metadata_created 2025-11-19T21:06:40.746762
metadata_modified 2025-11-19T21:06:40.746768
notes 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.
num_resources 1
num_tags 22
title West Flank Coso FORGE: Magnetotelluric Inversion