2016-01-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/681436摘要：本計畫分析臺灣全島移動式GPS測站、精密水準測線、連續GPS觀測網、井下應變儀觀測站和氣體與水氡地球化學與水位觀測站，並蒐集和針對斷層的活動性和震前的應變異常。因此本計畫的執行旨在結合GPS測量、水準測量，PS-InSAR、井下應變儀、地下水與地球化學觀測，結合地質構造、地震活動觀測、數值模擬和斷層活動度的研究，期能提供近斷層活動性及潛勢和可能地震前兆的資訊，並提供活動斷層地質敏感區分析之參考。今年計畫執行主要重點為：（1）分析地調所建置的83個連續GPS測站、交換的GPS測站及10站井下應變儀時間序列的應變異常；（2）由773台移動式GPS測站、42條精密水準測線和連續GPS觀測網，分析台灣東部地區地殼變形之型態和活動構造的活動性，並利用數值摸式，反演斷層面上的鎖定率、滑移虧損和滑移率；(3) 利用C波段和L波段持久性散射體合成孔徑雷達干涉技術（PS-InSAR）觀測評估地調所公布臺灣東部區域8條活動斷層活動性並結合水準資料等資料針對斷層進行分析；（4）比較井下應變儀和連續GPS觀測站的長期應變率，分析應變速率改變的因素；（5）分析5座土壤氣體觀測站、2座水氡觀測站及4座水位站資料，觀測活動構造可能之前兆訊息與機制；（6）由地球化學觀測的異常事件資料，配合連續GPS觀測和井下應變儀，評估地震發生前的應變異常；（7）分析臺灣東部8條活動斷層的活動潛勢，取得斷層參數並製作臺灣地區斷層活動機率潛勢圖；（8）針對地質法之活動斷層敏感區執行面問題研析，包括地質法子法及調查手冊中關於活動斷層部份之執行面問題，以及地質法與相關法令銜接性問題。<br> Abstract: This project aims on analysis of the island-wide GPS network, precise leveling lines, continuous recording GPS network, networks of borehole strainmeters, gas composition and water-level monitoring stations in order to provide the basic data to assess the fault activity, probability of major faults and strain anomaly related to the big earthquake. Consequently we integrate the joint information about fault activity in Taiwan using the data from GPS, precise leveling, PS-InSAR, borehole strainmeters, gas composition and water-level monitoring stations which help to delineate the geologically sensitive areas of active faults and information of possible earthquake precursory. The main missions of this year are to: (1) explore the anomalous crustal deformation phenomena by analyzing the time series from 83 continuous GPS (CGPS) from CGS, exchange CGPS and 10 borehole strainmeter stations; (2) determine the accumulation of current crustal strain pattern and fault activity by the data from 773 campaign GPS stations, 42 precise leveling lines and continuous GPS network to simulate the coupling coefficient, slip deficit and slip rate along the fault plane by inversion of geodetic measurements; (3) use C-band and L-band radar images with PS-InSAR technique to characterize the deformation pattern across the active faults in eastern Taiwan; (4) compare the strain rate from continuous GPS and strainmeter measurements and assess the parameters for the change of strain rate; (5) analyze the data collected from 5 gas composition monitoring stations, 2 groundwater-radon monitoring stations, and 4 groundwater-level monitoring stations to characterize the potential precursors and mechanisms of corresponding big earthquakes; (6) study the anomalous strain rate change from the observation based on geochemical monitoring stations with the comparison of those from continuous GPS and borehole strainmeter measurement; (7) analyze the probability of the 8 active faults in eastern Taiwan and assess fault parameters, and set up active fault probability map; (8) study the feasibility in executing the geologically sensitive areas on active faults, including assessment the items listed in the Geology Act and investigation manual for active faults as well as the linkage with corresponding acts.全球衛星定位系統連續觀測站PS-InSAR井下應變儀氣體地球化學水位觀測井斷層活動潛勢分析GPSCGPSPS-InSARBorehole StrainmeterGas geochemistryWater-level observation wellAalysis in Potential Activity of Faults