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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/24934

Title: Investigation of T-wave propagation in the offshore area east of Taiwan from early analog seismic network observations
Authors: Bor-Shouh Huang1;Po-Fei Chen;Yi-Ling Huang;Win-Gee Huang;Chun-Chi Liu
Contributors: NTOU:Institute of Applied Geosciences
國立臺灣海洋大學:應用地球科學研究所
Keywords: T-wave;Earthquake;Propagation;Analog records;Taiwan
Date: 2011/08
Issue Date: 2011-10-20T08:18:21Z
Publisher: Terrestrial, Atmospheric and Oceanic Sciences
Abstract: Abstract :Extant paper records of the early analog seismic network f Taiwan represent a large resource for earthquake studies in several disciplines. In this study, we report on T waves generated from offshore earthquakes, based on analog observations. The T phases were identified from their stable apparent velocity of about 1.5km
s and other observations using data recorded by stations in eastern Taiwan and on two nearby islands. The observed T phases are recorded for the first time from Taiwan, and in particular are observed by the network in the distal range of local earthquakes. Most of the T waves are observed at island stations at epicentral distances greater than 100 km. For earthquakes that occurred a great distance east of Taiwan, the I phases are always the most dominant phases observed at island stations east of Taiwan, and are also seen at some inland stations with smaller amplitudes. No T phases from inland events were observed by stations on Taiwan or on nearby islands. The observation indicate that the amplitude of the T phase is highly attenuated on its land path and that the propagation direction of the T phase is affected by water depth.
s and other observations using data recorded by stations in eastern Taiwan and on two nearby islands. The observed T phases are recorded for the first time from Taiwan, and in particular are observed by the network in the distal range of local earthquakes. Most of the T waves are observed at island stations at epicentral distances greater than 100 km. For earthquakes that occurred a great distance east of Taiwan, the I phases are always the most dominant phases observed at island stations east of Taiwan, and are also seen at some inland stations with smaller amplitudes. No T phases from inland events were ofbserved by stations on Taiwan or on nearby islands. The observation indicate that the amplitude of the T phase is highly attenuated on its land path and that the propagation direction of the T phase is affected by water depth.
Relation: 22(4), pp,383-391
URI: http://ntour.ntou.edu.tw/handle/987654321/24934
Appears in Collections:[應用地球科學研究所] 期刊論文

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