頁籤選單縮合
題名 | A Study of Aftershocks of the 17 July 1998 Ruey-Li, Chiayi Earthquake=1998年7月17日嘉義瑞里地震之餘震研究 |
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作者姓名(中文) | 陳國誠; 黃柏壽; 溫國樑; 邱宏智; 葉永田; 鄭世楠; 彭瀚毅; 張道明; 辛在勤; 石瑞銓; 林慶仁; | 書刊名 | Terrestrial, Atmospheric and Oceanic Sciences |
卷期 | 10:3 1999.09[民88.09] |
頁次 | 頁605-618 |
分類號 | 354.4 |
關鍵詞 | 嘉義瑞里; 地震; Aftershock; Focal mechanism; JHD; Chiayi; |
語文 | 英文(English) |
英文摘要 | On 17 July 1998, an earthquake of magnitude 6.2 (ML) occurred nearChiayi, southwestern Taiwan. Two days after the occurrence of themainshock, a temporary digital seismic network was deployed near its epicenter for 24 days to monitor the aftershock activity. The events within andnear the network were first located using a traditional single-event locationand then relocated using a joint hypocentral determination (JHD) technique to determine the significance of lateral velocity variations and to improve earthquake locations. The station corrections obtained from the JHDanalysis vary from 0.30 to -0.18 sec for the P-waves and from 0.51 to -0.58sec for the S-waves. The patterns of station corrections suggest that uppercrustal velocities on the eastern side of the study area are relatively higherthan those on the western side. The depth cross-section of the relocatedaftershocks shows a clear pattern of southeast-dipping distribution of thehypocenters. The focal mechanisms and hypocentral distribution of therelocated aftershocks reveal a close relationship between seismicity and theknown faults in-the study area. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。