The 1886 Charleston, South Carolina, Earthquake: Relic Railroad Offset Reveals Rupture

Bilham, Roger; Hough, Susan E.

doi:10.1785/0320230022

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The 1886 Charleston, South Carolina, Earthquake: Relic Railroad Offset Reveals Rupture

2023
By Bilham, Roger ; Hough, Susan E.
Source: The Seismic Record, 3(4), 278-288

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Journal Title:

The Seismic Record
Personal Author:

Bilham, Roger ; Hough, Susan E.

Bilham, Roger ; Hough, Susan E. Less -
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

In the absence of documented surface rupture during the 1 September 1886 Charleston earthquake, there has been considerable speculation about the location and mechanism of the causative fault. We use an inferred coseismic offset of the South Carolina Railroad and additional numerical constraints to develop an elastic deformation model—a west-dipping fault following strands of two previously identified faults. The constraints are consistent with a blind rupture with 6.5 ± 0.3 m of dextral slip and 2 ± 0.5 m of reverse slip below 450 m depth. We propose that repeated slip on this fault has raised the Penholoway Marine Terrace >6 m since ∼770 ka. The inferred coseismic slip on the fault in an Mw 7.3 earthquake is consistent with the distribution of damage in 1886.
Keywords:

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General Chemical Engineering
Source:

The Seismic Record, 3(4), 278-288
DOI:

https://doi.org/10.1785/0320230022
ISSN:

2694-4006
Publisher:

Seismological Society of America (SSA)
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/2.0/
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CC BY
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Library
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urn:sha256:35e1bc220178b8e22e74f47daf2731179f6f47f92f81d97800bab8e934524fea
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https://repository.library.noaa.gov/view/noaa/58850/noaa_58850_DS1.pdf
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The 1886 Charleston, South Carolina, Earthquake: Relic Railroad Offset Reveals Rupture

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