Coseismic displacement and tectonic implication of 1951 Longitudinal Valley earthquake sequence, eastern Taiwan

Yuan Hsi Lee, Guin Ting Chen, Ruey-Juin Rau, Kuo-En Ching

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The Longitudinal Valley Fault (LVF) in eastern Taiwan is an extremely active fault with 3-4 cm of displacements consumed each year along its length. The fault forms the suture zone between the Philippine Sea and Eurasian plates as a result of an oblique arc continental collision. From 22 October to 5 December 1951, four earthquakes (Ms > 7) shook the LVF. We used triangulation (from 1917 to 1921 to 1976-1978) and interseismic GPS (from 1990 to 1995) data to estimate coseismic displacements of the 1951 earthquake sequences. Coseismic displacement progressively decreases firom north to south and the azimuth changes from north to NE, then to a NW direction. According to the inverted faulting mechanism, the Longitudinal Valley fault can be separated into three segments. Both the northern and central segments have a high dip angle to the east, but the southern segment is of listric fault geometry. The northern segment exhibits dominantly left lateral strike-slip faulting with reverse component, while the middle exhibits thrusting dominantly, and the southern segment exhibits thrusting with left-lateral motion associated with a smaller coseismic displacement. In addition, this three-segment deformation model can explain the pattern of recent crustal deformation along the LVF and Coastal Range.

Original languageEnglish
Article numberB04305
JournalJournal of Geophysical Research: Solid Earth
Volume113
Issue number4
DOIs
Publication statusPublished - 2008 Apr 4

Fingerprint

Faulting
Taiwan
Tectonics
valleys
tectonics
Earthquakes
earthquakes
valley
earthquake
Triangulation
Global positioning system
faulting
Geometry
listric fault
Philippine Sea plate
fault geometry
triangulation
continental collision
crustal deformation
Eurasian plate

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

Cite this

@article{f2481a7c108a45589e72a807c784612f,
title = "Coseismic displacement and tectonic implication of 1951 Longitudinal Valley earthquake sequence, eastern Taiwan",
abstract = "The Longitudinal Valley Fault (LVF) in eastern Taiwan is an extremely active fault with 3-4 cm of displacements consumed each year along its length. The fault forms the suture zone between the Philippine Sea and Eurasian plates as a result of an oblique arc continental collision. From 22 October to 5 December 1951, four earthquakes (Ms > 7) shook the LVF. We used triangulation (from 1917 to 1921 to 1976-1978) and interseismic GPS (from 1990 to 1995) data to estimate coseismic displacements of the 1951 earthquake sequences. Coseismic displacement progressively decreases firom north to south and the azimuth changes from north to NE, then to a NW direction. According to the inverted faulting mechanism, the Longitudinal Valley fault can be separated into three segments. Both the northern and central segments have a high dip angle to the east, but the southern segment is of listric fault geometry. The northern segment exhibits dominantly left lateral strike-slip faulting with reverse component, while the middle exhibits thrusting dominantly, and the southern segment exhibits thrusting with left-lateral motion associated with a smaller coseismic displacement. In addition, this three-segment deformation model can explain the pattern of recent crustal deformation along the LVF and Coastal Range.",
author = "Lee, {Yuan Hsi} and Chen, {Guin Ting} and Ruey-Juin Rau and Kuo-En Ching",
year = "2008",
month = "4",
day = "4",
doi = "10.1029/2007JB005180",
language = "English",
volume = "113",
journal = "Journal of Geophysical Research",
issn = "0148-0227",
publisher = "American Geophysical Union",
number = "4",

}

Coseismic displacement and tectonic implication of 1951 Longitudinal Valley earthquake sequence, eastern Taiwan. / Lee, Yuan Hsi; Chen, Guin Ting; Rau, Ruey-Juin; Ching, Kuo-En.

In: Journal of Geophysical Research: Solid Earth, Vol. 113, No. 4, B04305, 04.04.2008.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Coseismic displacement and tectonic implication of 1951 Longitudinal Valley earthquake sequence, eastern Taiwan

AU - Lee, Yuan Hsi

AU - Chen, Guin Ting

AU - Rau, Ruey-Juin

AU - Ching, Kuo-En

PY - 2008/4/4

Y1 - 2008/4/4

N2 - The Longitudinal Valley Fault (LVF) in eastern Taiwan is an extremely active fault with 3-4 cm of displacements consumed each year along its length. The fault forms the suture zone between the Philippine Sea and Eurasian plates as a result of an oblique arc continental collision. From 22 October to 5 December 1951, four earthquakes (Ms > 7) shook the LVF. We used triangulation (from 1917 to 1921 to 1976-1978) and interseismic GPS (from 1990 to 1995) data to estimate coseismic displacements of the 1951 earthquake sequences. Coseismic displacement progressively decreases firom north to south and the azimuth changes from north to NE, then to a NW direction. According to the inverted faulting mechanism, the Longitudinal Valley fault can be separated into three segments. Both the northern and central segments have a high dip angle to the east, but the southern segment is of listric fault geometry. The northern segment exhibits dominantly left lateral strike-slip faulting with reverse component, while the middle exhibits thrusting dominantly, and the southern segment exhibits thrusting with left-lateral motion associated with a smaller coseismic displacement. In addition, this three-segment deformation model can explain the pattern of recent crustal deformation along the LVF and Coastal Range.

AB - The Longitudinal Valley Fault (LVF) in eastern Taiwan is an extremely active fault with 3-4 cm of displacements consumed each year along its length. The fault forms the suture zone between the Philippine Sea and Eurasian plates as a result of an oblique arc continental collision. From 22 October to 5 December 1951, four earthquakes (Ms > 7) shook the LVF. We used triangulation (from 1917 to 1921 to 1976-1978) and interseismic GPS (from 1990 to 1995) data to estimate coseismic displacements of the 1951 earthquake sequences. Coseismic displacement progressively decreases firom north to south and the azimuth changes from north to NE, then to a NW direction. According to the inverted faulting mechanism, the Longitudinal Valley fault can be separated into three segments. Both the northern and central segments have a high dip angle to the east, but the southern segment is of listric fault geometry. The northern segment exhibits dominantly left lateral strike-slip faulting with reverse component, while the middle exhibits thrusting dominantly, and the southern segment exhibits thrusting with left-lateral motion associated with a smaller coseismic displacement. In addition, this three-segment deformation model can explain the pattern of recent crustal deformation along the LVF and Coastal Range.

UR - http://www.scopus.com/inward/record.url?scp=45149123290&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=45149123290&partnerID=8YFLogxK

U2 - 10.1029/2007JB005180

DO - 10.1029/2007JB005180

M3 - Article

VL - 113

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

IS - 4

M1 - B04305

ER -