Reactivated faulting near Cushing, Oklahoma: Increased potential for a triggered earthquake in an area of United States strategic infrastructure

Geophysical Research Letters
By: , and 

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Abstract

In October 2014 two moderate-sized earthquakes (Mw 4.0 and 4.3) struck south of Cushing, Oklahoma, below the largest crude oil storage facility in the world. Combined analysis of the spatial distribution of earthquakes and regional moment tensor focal mechanisms indicate reactivation of a subsurface unnamed and unmapped left-lateral strike-slip fault. Coulomb failure stress change calculations using the relocated seismicity and slip distribution determined from regional moment tensors, allow for the possibility that the Wilzetta-Whitetail fault zone south of Cushing, Oklahoma, could produce a large, damaging earthquake comparable to the 2011 Prague event. Resultant very strong shaking levels (MMI VII) in the epicentral region present the possibility of this potential earthquake causing moderate to heavy damage to national strategic infrastructure and local communities.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Reactivated faulting near Cushing, Oklahoma: Increased potential for a triggered earthquake in an area of United States strategic infrastructure
Series title Geophysical Research Letters
DOI 10.1002/2015GL064669
Volume 42
Issue 20
Year Published 2015
Language English
Publisher American Geophysical Union
Publisher location Washington
Contributing office(s) Geologic Hazards Science Center
Description 5 p.
First page 8328
Last page 8332
Country United States
State Oklahoma
City Cushing
Online Only (Y/N) N
Additional Online Files (Y/N) N