Repeating earthquakes and seismic potential along the northern Longitudinal Valley fault of eastern Taiwan

Ruey-Juin Rau, Kate Huihsuan Chen, Kuo-En Ching

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The northern Longitudinal Valley fault in eastern Taiwan creeps at the surface with a small rate of ∼1 cm/yr but slips in large earthquakes. To improve seismic hazard assessment, it is important to comprehend the slip deficit rate distribution at depth. We discovered 25 ML 2.1-4.6 repeating earthquakes in this area and inverted GPS measurements for producing an image of the along-strike spatial distribution of deep fault slip rates. The repeating events are located at the depths of 10-22 kin with 24.9-77.5 mm/yr slip rates, which are comparable with the GPS-derived slip rates of 47.5 ± 5.8 mm/yr at similar depth ranges. Based on distribution of GPS-derived slip deficits, since 1951, the northern Longitudinal Valley fault has become capable of releasing stored strain in a future Mw = 7.3 earthquake.

Original languageEnglish
Article numberL24301
JournalGeophysical Research Letters
Volume34
Issue number24
DOIs
Publication statusPublished - 2007 Dec 28

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slip rate
Taiwan
valleys
slip
GPS
earthquakes
valley
earthquake
fault slip
hazard assessment
seismic hazard
creep
spatial distribution
releasing
hazards
distribution
rate

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

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abstract = "The northern Longitudinal Valley fault in eastern Taiwan creeps at the surface with a small rate of ∼1 cm/yr but slips in large earthquakes. To improve seismic hazard assessment, it is important to comprehend the slip deficit rate distribution at depth. We discovered 25 ML 2.1-4.6 repeating earthquakes in this area and inverted GPS measurements for producing an image of the along-strike spatial distribution of deep fault slip rates. The repeating events are located at the depths of 10-22 kin with 24.9-77.5 mm/yr slip rates, which are comparable with the GPS-derived slip rates of 47.5 ± 5.8 mm/yr at similar depth ranges. Based on distribution of GPS-derived slip deficits, since 1951, the northern Longitudinal Valley fault has become capable of releasing stored strain in a future Mw = 7.3 earthquake.",
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Repeating earthquakes and seismic potential along the northern Longitudinal Valley fault of eastern Taiwan. / Rau, Ruey-Juin; Chen, Kate Huihsuan; Ching, Kuo-En.

In: Geophysical Research Letters, Vol. 34, No. 24, L24301, 28.12.2007.

Research output: Contribution to journalArticle

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