A precursory ULF signature for the Chi-Chi earthquake in Taiwan
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چکیده
منابع مشابه
A precursory ULF signature for the Chi-Chi earthquake in Taiwan
ULF emission data at Lunping (epicentral distance, 120 km) have been analysed for the Chi-chi earthquake (with magnitude 7.6 and depth of 11 km) in Taiwan which occurred on 21 September 1999. Simple intensity analyses have not yielded any significant results but we have found, based on the analysis of polarization (the ratio of vertical magnetic field component Z to the horizontal component G),...
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ULF/ELF emission observation has been performed at Nakatsugawa observatory (geographic coordinates; 35.4 N, 137.5 E, Gifu prefecture) since January 1999. The equipment consists of three-orthogonal magnetic sensors (induction coils), amplifiers, A/D converters and the data logger with a computer. The frequency range of observation is from 0.001 Hz to 50 Hz. The serious changes in ELF magnetic fi...
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Division of Nephrology, Department of Medicine, Taichung Veterans General Hospital*, Chung-Shan Medical University Hospital**, Institute of Clinical Medicine, National Yang Ming University***, Taichung, Taiwan Received: April, 2005 Revised: April, 2005 Accepted: May, 2005 Address reprint requests to Dr. Kuo-Hsiung Shu, Division of Nephrology, Department of Medicine, Taichung Veterans General Ho...
متن کاملDisaster epidemiology and medical response in the Chi-Chi earthquake in Taiwan.
STUDY OBJECTIVE We examine the mortality and morbidity associated with earthquakes in the Chi-Chi earthquake in Taiwan in 1999. METHODS Crude casualty data were collected from the reports of the government, local health bureaus, and 97 hospitals. The demographic data from the annual report of the Department of Interior were also employed for data analysis. Cross tables showing incidence of de...
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[1] The ground motion data of the 1999 Chi-Chi, Taiwan, earthquake exhibit a striking difference in frequency content between the north and south portions of the rupture zone. In the north, the ground motion is dominated by large lowfrequency displacements with relatively small high-frequency accelerations. The pattern is opposite in the south,with smaller displacements and larger accelerations...
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ژورنال
عنوان ژورنال: Natural Hazards and Earth System Sciences
سال: 2001
ISSN: 1684-9981
DOI: 10.5194/nhess-1-33-2001