Data Services Products: EMC-TX_EF_2020-S S-velocity model of the Eagle Ford of southeastern Texas from joint inversion of Ambient Noise Tomography and P to S Receiver Functions

Summary

TX_EF_2020-S is a S-velocity model of the Eagle Ford of southeastern Texas from joint inversion of Ambient Noise Tomography and P to S Receiver Functions.

Description

Name TX_EF_2020-S
Title S-velocity model of the Eagle Ford of southeastern Texas from joint inversion of Ambient Noise Tomography and P to S Receiver Functions
Type 3-D Tomography Earth Model
Sub Type S velocity perturbation (%) and S velocity (km/s)
Year 2020
Short Description     TX_EF_2020-S provides estimates of shear velocity for southeastern Texas focused on the Eagle Ford Shale Play. The model uses passive source methods of ambient noise tomography and P to S receiver functions to jointly invert for shear velocity structure. The data is derived from recent TexNet broadband seismic deployments designed for earthquake monitoring and structural characterization.
Authors:  
Robert W. Porritt
University of Texas, Institute for Geophysics
Jackson School of Geosciences
University of Texas at Austin
Austin, TX, USA
 
Alexandros Savvaidis
Bureau of Economic Geology
Jackson School of Geosciences
University of Texas at Austin
Austin, TX, USA
 
Bissett Young
Bureau of Economic Geology
Jackson School of Geosciences
University of Texas at Austin
Austin, TX, USA
 
Matthew Shirley
Bureau of Economic Geology
Jackson School of Geosciences
University of Texas at Austin
Austin, TX, USA
 
Peng Li
Bureau of Economic Geology
Jackson School of Geosciences
University of Texas at Austin
Austin, TX, USA
 
Previous Model N/A
Reference Model N/A
Model Homepage https://robporritt.wordpress.com/eagle-ford-structure/
 
Model Download Public link to the model bundle
TX-EF-2020-S.nc (see metadata), is the netCDF file for the model
 
Model Homepage None
Depth Coverage 0 to 100 km
Area Eagle Ford of southeastern Texas, Longitude: 99˚W to 95˚W in 0.05˚ increments, Latitude: 27˚N to 31˚N in 0.05˚ increments (map)
 
Data Set Description    Seismic data was obtained from IRIS for network codes: 2T [Part of TexNet; doi:10.7914/SN/TX], 4F [North Texas Earthquake Study: Venus (Johnson County), TX; doi:10.7914/SN/4F_2015], IU [Global Seismograph Network – IRIS/USGS; doi:10.7914/SN/IU], N4 [Central and Eastern US Network; doi:10.7914/SN/N4], SS [station DAL, no doi], TA [USArray Transportable Array; doi:10.7914/SN/TA], TX [TexNet; doi:10.7914/SN/TA], US [United States National Seismic Network; doi:10.7914/SN/US], X4 [Gulf of Mexico Basin Opening; no doi], X9 [Dallas Earthquake Swarm; doi:10.7914/SN/X9_2008], and ZW [North Texas Earthquake Study: Azle and Irving/Dallas; doi:10.7914/SN/ZW_2013].
 
Model Resolution    The models have 1.2-km node spacing in all directions. Unmasked regions correspond to strong semblance (recovery of checkerboard patterns) for features of 20-km width. Depth resolution is generally best from the surface to 20 km depth.

TX_EF_2020-S
Cross-section perpendicular to the azimuth of major seismicity in the EF. Location of profile is plotted in panel (a) as a black line with asymmetrically colored dots which correspond to the same dots on the data cross-section B-B’ in panel (b) and interpreted cartoon in panel©. Map view (a) displays earthquakes as red circles and stations as burnt orange triangles. Shaded regions are approximate location of Llano Uplift (LlU), Ouachita-Marathon Front (OMF), Luling Uplift (LU), Karnes Trough (KT), and Eagle Ford (EF). Cross-sections have earthquakes within 0.5˚ plotted as gray circles and topography on top as burnt orange starting at 0.5 km below sea level. Panel (b) displays the basement proxy as 3.0 km/s contour, 7.x proxy as 4.0 km/s contour, and CRUST 1.0 [Laske et al., 2013] as a dashed red line. Panel© indicates the 7.x layer as from the 4.0 km/s contour as mafic lower crust. OMF indicates approximate location of the Ouachita-Marathon Front.

Citations and DOIs

To cite the original work behind this Earth model:

  • Porritt, R. W., A. Savvaidis, B. Young, M. Shirley, and P. Li (2020), Crustal Structure in Southeastern Texas from Joint Inversion of Ambient Seismic Noise and P to S Receiver Functions, Geochemistry, Geophysics, Geosystems, https://doi.org/10.1029/2019GC008866.

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:

Credits

Model provided by Robert Porritt

Timeline

2020-05-08
online

Categories

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