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2D surface strain calculated after removal of UTM reference frame (alternative)

Dates

Publication Date
Time Period
2014
Time Period
2019

Citation

Barnhart, W.D., Gold, R.D., and Hollingsworth, J., 2020, Displacement and strain field from the 2019 Ridgecrest earthquakes derived from analysis of WorldView optical satellite imagery (ver. 2.0, May 2021): U.S. Geological Survey data release, https://doi.org/10.5066/P9QRZ6NR.

Summary

Summary: This directory contains a second version of the mosaics of the 2-dimensional (2D) surface strain fields of the 2019 Mw7.1 and Mw6.4 Ridgecrest earthquakes derived from optical correlation. These results are derived through a modification to the inversion approach described in Barnhart et al. 2020 (Nature Geoscience) wherein we remove the UTM reference frame when building the Green’s function that is incorporated into the inversion for the displacement gradient tensor. The removal of the reference frame has the effect of improving the condition number of the Green’s function and making the inversion more stable. The mosaics are in UTM Zone 11N coordinates with 10m spatial resolution. Each file is in units of strain (i.e., to [...]

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Attached Files

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2Dstrain_shearMosaic_Alt.tif
“2D - Shear strain magnitude, UTM”
thumbnail 47.3 MB image/geotiff
2Dstrain_dilatationMosaic_Alt.tif
“2D - Dilatational strain magnitude, UTM”
thumbnail 47.3 MB image/geotiff
2Dstrain_S1Mosaic_Alt.tif
“2D - Greatest principal strain magnitude, UTM”
thumbnail 47.3 MB image/geotiff
2Dstrain_S2Mosaic_Alt.tif
“2D - Smallest principal strain magnitude, UTM”
thumbnail 47.3 MB image/geotiff
versionhistory.txt
“version history file”
801 Bytes text/plain

Purpose

Data were collected in order to quantify surface displacement resulting from the 2019 Ridgecrest earthquakes.

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ScienceBase WMS

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  • USGS Data Release Products

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