Data Services Products: EMC-MECMUS-2022 Multi-scale Electrical Conductivity Model of the United States

Summary

The Multi-scale Electrical Conductivity Model of the United States is derived by inverting the full MT impedance tensor from 1291 USArray stations.

Description

Name MECMUS-2022
Title Multi-scale Electrical Conductivity Model of the United States
Type 3-D Continental Electrical Conductivity Model
Sub Type Long-period Magnetotelluric
Units Siemens/meter
Year 2022
Data Revision r0.0 (revision history)
 
Short Description   The Multi-scale Electrical Conductivity Model of the United States (MECMUS-2022) was derived by inverting the full MT impedance tensor from 1291 USArray stations. The inversion procedure is described in Munch, F. and Grayver, A. V.,
 
Authors: F. Munch,Institute of Geophysics, ETH Zurich, Sonneggstrasse 5, Zurich, 8092, Switzerland
Berkeley Seismological Laboratory, University of California, Berkeley, United States

A. Grayver, Institute of Geophysics and Meteorology, University of Cologne, Albertus-Magnus-Platz, 50923, Cologne, Germany

 
Reference Model N/A
 
Prior Model N/A
 
Inversion Software GoFEM, (Grayver, 2015; Grayver and Kolev, 2015; Grayver et al., 2019)
 
Model Download MECMUS-2022.r0.0.nc (see metadata) is the ORLA2022 model in netCDF 3 Classic format.
 
Model Home Page N/A
Depth Coverage 0 – 400km
 
Area Focused on the contiguous United States (latitude: 25° to 50°, longitude: -125.0° to -65.0°)
 
Usage Notes   The model coordinates represent cell center coordinates, and the model parameters are evaluated at the cell centers
 
Data Set Description Frequency domain long-period (10 to 3e4 secs) magnetotelluric (MT) data from USArray MT, USGS MT, USMTArray available from IRIS EMTF database
 
 

MECMUS 1
Depth slices through the model at upper to mid-crustal depth. Shown is electrical conductivity on a logarithmic scale. Survey area is indicated by the bright polygon.

MECMUS 2
Depth slices through the model at upper to mid-crustal depth. Shown is electrical conductivity on a logarithmic scale. The bright polygon indicates the survey area.

Citations and DOIs

To cite the original work behind this Earth model:

  • Munch, F. and Grayver, A. V., (2023). Multi-scale imaging of 3-D electrical conductivity structure under the contiguous US constrains lateral variations in the upper mantle water content, Earth and Planetary Science Letters. https://doi.org/10.1016/j.epsl.2022.117939

To cite IRIS DMC Data Products effort:

  • Trabant, C., A. R. Hutko, M. Bahavar, R. Karstens, T. Ahern, and R. Aster (2012), Data Products at the IRIS DMC: Stepping Stones for Research and Other Applications, Seismological Research Letters, 83(5), 846–854, https://doi.org/10.1785/0220120032.

DOI for this EMC webpage: https://doi.org/10.17611/dp/emc.2022.mecmus.1

References

  • Grayver, A.V., 2015. Parallel three-dimensional magnetotelluric inversion using adaptive finite-element method. Part I: theory and synthetic study. Geophysical Journal International 202, 584–603.
  • Grayver, A.V., van Driel, M., Kuvshinov, A.V., 2019. Three-dimensional magnetotelluric modelling in spherical Earth. Geophysical Journal International 217, 532–557.
  • Grayver, A.V., Kolev, T.V., 2015. Large-scale 3D geoelectromagnetic modeling using parallel adaptive high-order finite element method. Geophysics 80, E277–E291

Credits

  • r0.0 model provided by Federico Munch.

Revision History

revision r0.0: uploaded December 8, 2022.

Timeline

2022-12-12
online

Categories

Tags

EMC

09:12:21 v.eb79165e