Data Services Products: EMC-NA04 North American upper mantle surface wave tomography model

Summary

NA04, van der Lee and Frederiksen (2005) , is derived from inversion of the fundamental and higher mode Rayleigh waveforms using the Partitioned Waveform Inversion technique, Nolet (1990). The data set used includes waveforms from about 1400 regional seismograms recorded at North American digital broadband seismic stations (including the USArray Transportable Array waveforms). The NA04 3-D model is expressed as the velocity difference in m/s relative to the 1-D averaged Earth model MC35 .

Description

Name NA04
Title North American upper mantle surface wave tomography model
Type 3-D Tomography Earth Model
Sub Type S velocity
Year 2004
Short Description   A 3-D S-velocity model of the upper mantle beneath North America. NA04 is derived from inversion of the fundamental and higher mode Rayleigh waveforms using the Partitioned Waveform Inversion technique, Nolet (1990) . The data set used includes waveforms from about 1400 regional seismograms recorded at North American digital broadband seismic stations (including the USArray Transportable Array waveforms). The NA04 3-D model is expressed as the velocity difference in m/s relative to the 1-D averaged Earth model MC35 .
Authors:  
Suzan van der Lee
Department of Earth and Planetary Sciences
Northwestern University
Evanston, Illinois
Andrew Frederiksen
Department of Geological Sciences
University of Manitoba
Winnipeg, MB Canada
Previous Model
Reference Model MC35
Model Download
NA04.tar.gz (~18.5 MB) includes the model in its original format (S-velocity anomalies in m/s) on a 0.25°x0.25° grid for depths from 70 to 670 km at non-uniform intervals and also the MC35 reference model.
NA04_percent.nc (metadata) is the netCDF binary for the above 0.25°x0.25° model expressed as percent S-velocity perturbation relative to the MC35 reference model.
NA04_kmps.nc (metadata) is the netCDF binary for the above 0.25°x0.25° model expressed as S-velocity in km/s.
Model Homepage www.earth.northwestern.edu/research/suzan/
Depth Coverage Upper mantle (70 to 670 km)
Areal Coverage North America (10°/85°, -170°/-55°)
 
Data Set Description Data set includes fundamental and higher mode Rayleigh waveforms from about 1400 regional seismograms recorded at North American digital broadband seismic stations, including waveforms from the USArray Transportable Array stations.

model NA04 at various depths

Figure, van der Lee and Frederiksen (2005) , shows model NA04 at various depths using different color scales, (a) 70 km; (b) 110 km; (c) 150 km; (d) 250 km; (e) 450 km; and (f) 650 km.

Citation

  • Van der Lee, S., and Andrew Frederiksen. 2005. Surface Wave tomography applied to the North American upper mantle, in AGU Monograph. Seismic Earth: Array Analysis of Broadband Seismograms, Eds: Levander A., and G. Nolet, 67-80.
  • 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 application, Seismological Research Letters, 83(6), 846:854. doi: 10.1785/0220 120032

Credits

  • S. Van der Lee and Andrew Frederiksen

DOI

There is no DOI currently assigned for this product.

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