Preliminary Study on Recently GPS Measurements in Taoyuan-Hsinchu Area, Taiwan
Date Issued
2005
Date
2005
Author(s)
Chung, Wei
DOI
zh-TW
Abstract
ABSTRACT
The present study uses the GPS (Global Positioning System) measurement to obtain the displacement field and strain pattern for unravelling the fault movement and earthquake potential in Hsinchu area. The GPS data offered by the Central Geological Survey MOEA are measured in past three years and the constrained points are using NCTU and S01R. The softwares of analysis include Bernese 4.2 and QOCA 1.21 for calculating the average velocity and dilatation strain rate, respectively.
The results show that the Yangmei area has suffered compression during Sep. 2002 to Jul. 2004 as revealed by average strain rate and average velocity data. However, it can't be confirmed that this phenomenon is due to the linement in northern part of Yangmei area or the Hukou fault. The Fongshanchi area, which separating the Hukou area to the north and the Hsinchu area to the south, may exist a WNW-striking strike-slip fault with different displacement field in its two sides. The Hsinchu fault has right-lateral slip movement based on the average velocity field in Hsinchu area. The Hsincheng fault exhibits compression and still going vererse-slip as shown by the average strain rate and the average velocity data between its two walls. Besides the southern segment of the Tapingti fault exhibits creeping phenomenon revealed by the average strain rate and the average velocity data.
Subjects
新竹
全球衛星定位系統
斷層
Hsinchu
GPS
fault
Type
thesis