台灣位於造山帶，地處歐亞大陸板塊與菲律賓海板塊的擠壓碰撞帶。在地體構造上，台灣西部存在著早期形成之老構造。台南佳里地區，自1991年至2008年10月的地震目錄記錄著當地地質活動。運用統計學並配合地震目錄中的各項資料，以地震規模、地震深度、時間等等因素及地震幾何分佈關係，逐一解析本區的地質、地震特性。經分析，本區大致可分為三區，即area1 (2306’30”N~23017’24”N 119054’E~12005’24”E)、area2 (23015’N~23019’48”N 12006’E~120012’E)、area3 (23010’12”N~23023’48”N 12003’E~12006’E)。經研究分析顯示。台南佳里地區連同新化一帶，共分佈有三個斷層構造，其走向分別為：A區約為北偏西61度、B區約為北偏西58度、C區約為北偏西70度；三區存在有約為左移型斷層構造；B、C兩區明顯向北偏東傾下。在地震發生上，地震群在A、B兩區間遷移跳動，較有可能受到地層中流體觸發地震的影響，且流體的觸發沒有明顯規率性，可以看出的是兩波觸發行為，即第一波自1991至1994年，促使area1與area2發生突發性孤立地震；第二波自1995至1998年，造成area3發生突發性孤立地震。而在b值分析上，自1991年至2008年，佳里地區大地震發生的機率逐漸偏低，且受到921大地震影響，區域應力累積重新調整而變小了，使得1999年之後觸發突發性孤立地震群的機率及發生較大地震規模機率同時變小。另外，本區地震深度多集中於10~15公里深，此深度可能代表了構造深度或者是流體活躍深度。

Taiwan lies on a suture zone between the Eurasia Plate and the Philippine Sea Plate. As to the tectonic structure of Taiwan, the early tectonic structure exists in the western Taiwan. From 1991 to 2008, there were the earthquake records for the tectonic activities of Jiali Area in Tainan. By using statistical techniques to analyze the earthquake magnitudes, the earthquake hypocenter depth, the time of earthquake occurrence, and the spatial and temporal distribution of the earthquakes, the geological and the earthquake characteristic of the area are studied. According to the analysis, Jiali area can be divided into three areas. They are area1 (23º6’30”N~23º17’24”N, 119º54’E~120º5’24”E), area2 (23º15’N~23º 19’48”N, 120º6’E~120º12’E), and area3 (23º10’12”N~23º23’48”N, 120º3’E~120º6’E). The analysis shows that there are three fault structures distributing over Jiali Area of Tainan, including Sinhua Area. The three fault trends are: zone A exists about the western north 61º, zone B exists about the western north 58º, zone C exists about the western north 70º. They are all left-lateral fault structures, and especially zone B and zone C go down toward the north-east obviously. As to the earthquake occurrence, the earthquakes occurred in zone A and zone B are mainly influenced by the fluid in the stratum, and the occurrence by the fluid pops with irregular pattern. What can be told is there are two popping activities. The first popping activity, from 1991 to 1994, triggered the occurrence of sudden individual earthquakes in area1 and area2. The second popping activity caused the occurrence of sudden individual earthquake in area3 from 1995 to 1998. As to the analysis of b-value, the rate of the large earthquake occurrence goes down in Jiali Area. Especially being influenced by the 921 Earthquake, the stress of the area modulates and that makes the rate of the sudden individual earthquake occurrence and the large earthquake occurrence both go down. In addition, the earthquakes in this area occur in 10~15 km depth, which is speculated to be the depth of the tectonic structure or the depth of fluid.

參考文獻
中文部份
楊耿明、丁信修、吳榮章，台灣西北部盆地架構與斷層力學分析，中油公司探採研究彙報，19期，第130-125頁，1996。
陈培善、白彤霞、李保昆，b值和地震復發周期，地球物理學報，46(4):510-519，2003。

英文部份
Aki, K. and P. G. Richards, Quantitative Seismology: Theory and Methods, W. H. Freeman and Company, San Francisco, 1980.
Chang, C. P., T. Y. Chang, J. Angelier, H. Kao, J. C. Lee, and S. B. Yu, Strain and stress field in Taiwan oblique convergent system: constraints from GPS observation and tectonic data, Earth and Planetary Science Letters, 214, 115-127, 2003.
Frohlich, C., and S. D. Davis, Teleseismic b Values; or, much Ado About 1.0, J. Geophys. Res. 98, 631-644, 1993.
Gutenberg, B. and Richter, C.F., Frequency of earthquakes in California, Bull. seism. Soc. Am., 34, 185–188, 1944.
Huang, C. Y. , P. B. Yuan, C. W. Lin, T. K. Wang, and C. P. Chang, Geodynamic processes of Taiwan arc-continent collision and comparison with analogs in Timor, Papua New Guinea, Urals, and Corsica, Tectonophysics, Vol. 325 , pp. 1-21, 2000.
Huang, C. Y., Y. L. Chiu, and M. Zhao, Core description and preliminary sedimentology features of silt and sand depositions of ODP Site 1202D, Leg, 195, southern Okinawa Trough. Terrestrial, Atmospheric and Oceanic Sciences, 16, 19-44, 2005.
Kisslinger, C., J. R. Bowman, and K. Koch, Procedures for computing focal mechanisms from regional network observations, Bull. Seism. Soc. Am., 70, 999 – 1014, 1981.
Schorlemmer, D., and S. Wiemer, Earthquake statistics at Parkfield: 1. Stationarity of b values, J. Geophys. Res. 109, B12307, 2004.
Schorlemmer, D., S. Wiemer, and M. Wyss, Variations in earthquake-size distribution across different stress regimes. Nature, 437, 539-542, 2005.
Suppe, J., Mechanics of mountain-building and metamorphism in Taiwan, Mem. Geol. Soc. China, Vol 4, pp. 67-89, 1981.
Snoke, J. A., FOCMEC: FOcal MEChanism determinations, International Handbook of Earthquake and Engineering Seismology (W. H. K. Lee, H. Kanamori, P. C. Jennings, and C. Kisslinger, Eds.), Academic Press, San Diego, Chapter 85.12., 2003.
Wessel, P., and W. H. F. Smith, Free software helps map and display data, Eos Trans., AGU, 72, 441, 1991.
Wiemer, S., and D. Schorlemmer, ALM: An asperity-based likelihood model for California, Seismol. Res. Letts., 78(1), 134-140, 2005.