台灣密集強震網所蒐集之高品質資料，經過五年之資料累積，不僅提供了初達波，亦記錄了許多重要反射波相。本研究計畫的主要目的，即希望由台灣密集之強震網所蒐集的中~大型地震（M＝4~7），由測站及地震間的波線關係，利用波線追跡法,根據其重要之反射波相之到達時間及振幅作分析以對當地之速度構造提供細部之了解，提供未來對較大地震的震源特性之了解及預測地振動之依據。此區域性之速度構造分析，所得之結果，可提供區域分區的考量，建立區域性格林函數資料庫之建立。在此同時，亦將探討新建立格林函數對及時地震分析之影響，如震源機制及其他震源參數的分析。本研究將延續本人去年度計畫，更進一步的加入速度變化之探討，提供區域分區之訊息，比較利用現有及時網資料(須考慮細部速度變化之格林函數)之結果與近震TSMIP結果之差異性，對現行之及時地震分析，提出探討。 The high-quality data recorded by the Taiwan Strong Motion Network had provided important information on the arrivals of P and S waves, and other later reflection phases. In this study, we would like to employ the ray tracing technique to the records, on the basis of the relative travel time and amplitudes of the reflted waves, to investigate the detail velocity structure along the paths between earthquakes and stations. The results will be helpful in determination of earthquake location and focal mechanisms. The velocity structure also will be used as the construction of Green’s function data base for the more reliable quick focal mechanism determination and fast rupture process analysis of earthquake. The effect of the detail velocity structure to the existing quick focal mechanism determination and the developing of fast fault rupture analysis for other important earthquake parameters as dimension of the fault and slip distribution and so on will be examined. In addition to that, on the basis of the constructed Green’s function data base, we would like to apply the developed rupture analysis techniques to the real-time strong motion network to examine its utility to the earthquake hazard prevetion program in Taiwan. 研究領域：8809 ~ 8912
