• 作者： 林明德；蔡義本；馮至津
• 作者服務機構： 中央研究院地球科學研究所籌備處
• 中文摘要： 民國六十六年四、五月間高?地區微震勘測共記錄得規模0.6至3.7間之微震二千八百次，證明臺灣南部現行地震活動 遠較全省遙記測震網所記錄者?多。由微震之空間分佈及合成震源機制解顯示潮洲斷層可能?南北走向之平移斷層，而六龜 斷層則為北北西傾向之逆衝斷層。卑甫山附近之地震?適位於古第三紀正地槽及先第三紀變質岩區之界線附近，震央分佈呈 北北東走向，此地震?是否與當地地質有關，?待進一步證明。就整體言，臺灣南部受西北西向之壓力與菲律賓海板塊西北 西向運動方向一致。
• 英文摘要： Microearthquake surveys were conducted in the Kaohsiung-Pingtung area in April, May and October, 1977. About 2800 microshocks with magnitudes ranging from 0.6 to 3.7 were recorded by portable, high gain, high frequency seismographs at eleven sites. Since measurements were taken at sites with different subterranean crust structures, a simple station-to-source residual method was used to correct travel times. The microearthquakes in these surveys, which have been located with high reliability, show much higher level of activity than the data of Taiwan Telemetered Seismographic Network (TTSN) has shown. However, similiar spatial patterns of seismicity are noted. Consistent first motion directions, and linear patterns on an areal distribution as well as on a vertical profile of two aftershock sequences suggest that the Chaochou fault is probably a north-south striking, sinistral, strike-slip fault, while the Liukuei fault is a north-northwest dipping thrust. The composite focal-mechanism solution of another earthquake swarm in the Central Mountain Range shows a normal dip-slip motion. The epicenters of this earthquake swarm were located at the approximate boundary between the Paleogene geosynclinal province and the pre-Tertiary metamorphic province, but how it relates to the local geology is still an open question.
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