Journal ArticleDOI
Paleoseismology of the Rueisuei Segment of the Longitudinal Valley Fault, Eastern Taiwan
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TLDR
Based on stratigraphic ordering and a statistical comparison of radiocarbon dates using the OxCal program, Wang et al. as mentioned in this paper estimate that two pre-1951 earthquake surface ruptures at the Dafu site occurred in the periods A.D. 1736-1898 and A. D. 1564-1680.Abstract:
Paleoseismic trench excavations in the Dafu area of eastern Taiwan have provided data on the rupture history of the Rueisuei segment of the Longitudinal Valley fault during the late Holocene. The 1951 Taitung earthquake ruptured the Dafu site, which is characterized by several terrace raises with late Holocene sediments uplifted by the westward thrust fault. Trenches across the northwest-facing fault scarp exposed fluvial and alluvial deposit sediments. Although nearly all of the 23 radiocarbon ages vary somewhat within each layer, the overall age determined for each layer is in good accord with the stratigraphic ordering of these layers. Based on stratigraphic ordering and a statistical comparison of radiocarbon dates using the OxCal program, we estimate that two pre-1951 earthquake surface ruptures at the Dafu site occurred in the periods A.D. 1736–1898 and A.D. 1564–1680. The same OxCal model constrains the past two recurrence intervals to about 165 and 140 yr, although with sizable uncertainties, 55–215 and 90–260 yr, respectively, which are 95% ranges. Through the correlation of three trenches across the Longitudinal Valley fault, we are able to identify evidence for at least three earthquakes with moment magnitudes of about 7.0–7.2 that occurred up to 390 yr prior to and during 1951. Furthermore, based on the radiocarbon dates, the mean recurrence interval is roughly 150 yr (uncertainty is indeterminate), with a minimum vertical uplift rate of 8.5–12.2 mm/yr.read more
Citations
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Journal ArticleDOI
OxCal: Versatile Tool for Developing Paleoearthquake Chronologies—A Primer
TL;DR: The radiocarbon calibration program OxCal (4.0.3 and above) as discussed by the authors provides paleoseismologists with a straightforward but rigorous means of estimating these event ages and their uncertainties.
Journal ArticleDOI
Integration of paleoseismic data from multiple sites to develop an objective earthquake chronology: Application to the Weber segment of the Wasatch fault zone, Utah
TL;DR: In this paper, the authors present a method to evaluate and integrate paleo-ismic data from multiple sites into a single, objective measure of earthquake timing and recurrence on discrete segments of active faults.
Journal ArticleDOI
Late Holocene coseismic uplift on the Hua-tung coast, eastern Taiwan: Evidence from mass mortality of intertidal organisms
Meng-Long Hsieh,Ruey Juin Rau +1 more
TL;DR: In this article, by applying radiocarbon dating methods, demonstrates coseismic uplift nature of the coast by finding synchronously killed intertidal organisms (mostly boring shell Jouannetia sp.).
Journal ArticleDOI
Exploring the relationship between soil degassing and seismic activity by continuous radon monitoring in the Longitudinal Valley of eastern Taiwan
Ching-Chou Fu,T. F. Yang,Min-Chien Tsai,Lou-Chuang Lee,Tsung-Kwei Liu,Vivek Walia,C.H. Chen,W.Y. Chang,Arvind Kumar,Tzu-Hua Lai +9 more
TL;DR: In this article, the variations in radon concentration are synchronized to variations in carbon dioxide (CO 2 ), which is considered as the companion gas for radon (Rn), and the results reveal that semi-diurnal variation of soil-gas, probably generated by the solar tide effect, achieve values of ~500 Bq/m 3 for Rn and 0.4% for CO 2.
Journal ArticleDOI
Pleistocene alluvial deposits dating along frontal thrust of Changhua Fault in western Taiwan: The cosmic ray exposure point of view
Lionel Siame,Lionel Siame,Rou-Fei Chen,Rou-Fei Chen,Rou-Fei Chen,F. Derrieux,Jian-Cheng Lee,Jian-Cheng Lee,Kuo-Jen Chang,Kuo-Jen Chang,Didier Bourlès,Didier Bourlès,Régis Braucher,Régis Braucher,Laëtitia Léanni,Chu Chun Kang,Chung Pai Chang,Chung Pai Chang,Hao Tsu Chu,Hao Tsu Chu +19 more
TL;DR: In this paper, the authors present a consistent regional chronological framework for the Pakua-Tadu area along the Changhua Fault, one of the most active frontal thrusts in the Western Foothills of the Taiwan mountain belt.
References
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Journal ArticleDOI
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TL;DR: In this article, a series of empirical relationships among moment magnitude (M ), surface rupture length, subsurface rupture length and downdip rupture width, and average surface displacement per event are developed.
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Journal ArticleDOI
Radiocarbon Calibration and Analysis of Stratigraphy: The OxCal Program
TL;DR: In this article, the OxCal program informatique OxCal permet d'effectuer de nombreuses analyses sur les dates radiocarbones, de la simple calibration a l'analyse de tous les sites archeologiques en donnant des informations sur la stratigraphie and les autres methodes de datation.
Journal ArticleDOI
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TL;DR: This paper highlights some of the main developments to the radiocarbon calibration program, OxCal, including changes to the sampling algorithms used which improve the convergence of the Bayesian analysis.
Journal ArticleDOI
Velocity field of GPS stations in the Taiwan area
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