根據台灣地區布蓋異常圖，高屏地區存在一明顯重力低區，初步認為此低區與該地區堆積厚的沉積物有關。為探討低區成因與其地質構造的模式，本研究藉由觀測重力資料，模擬二維、三維地下密度構造，提求高屏地區的地下密度模型，並透過重磁力異常分析，期望對該區地下構造與斷層分布提供更好的解釋。初始模型的假設，主要參考前人陸上地質剖面及西南海域震測剖面，配合中油台南-高雄十萬分之ㄧ地質圖，利用嘗試錯誤法修正模型，直到模型的理論重力值與觀測重力值相符，得到合適的地下密度構造分布。因為重力及磁力資料模擬地下構造的結果有非唯一解的問題，因此模型會加入鑽井、震測及速度構造資料，期能對深部構造有更好的控制。 ; According to the Taiwan Bouguer anomaly map, a low Bouguer anomaly area located in the Kaoping area is caused by thick sediments. For investigating the low Bouguer anomaly distribution and its subsurface geological structure, we will model the 2-D and 3-D density structures by using the gravity data. After analyzing the gravity and magnetic anomalies, we attempt to obtain a better and detail explanation of geology and fault distribution in the study area. The suitable structure is obtained by revising the initial model, which is referenced from geologic and geophysical using the trial and error method. Because of the non-unique problem in gravity and magnetic modeling, combined more drillings, seismic profiles and tomography results will help us to get well constrains of the deeper subsurface structure. ; 研究期間 9808 ~ 9907
