郯庐断裂带新沂-五河段晚第四纪活动的新证据

New evidence of Late Quaternary activity in the segment from Xinyi to Wuhe in the Tancheng-Lujiang fault zone

摘要:

郯庐断裂带对中国东部地区影响重大。已有研究表明，郯庐断裂带新沂-五河段第四纪以来有明显的新活动迹象。本文在前人工作的基础上，围绕郯庐断裂带新沂-五河段开展地震地质调查，在重点地段进行探槽开挖，结合断裂沿线地震活动分析，对郯庐断裂带新沂-五河段活动习性及未来地震危险性等进行了探讨。本文补充的很多第一手资料，可为研究郯庐断裂带新沂-五河段大地震复发规律及地震中长期预测等提供有价值的参考依据。

Abstract:

The Tancheng-Lujiang fault zone has great influence in eastern China． Studies have shown that the obvious signs of new activities exit in the segment from Xinyi to Wuhe of the Tancheng-Lujiang fault zone． In this paper，on the basis of the previous work，many seismological surveys have been made along the Tancheng-Lujiang fault zone． In the key sites the trenches have been excavated． Combined with the analysis of the seismic activities along the fault，the fault activity features and future seismic risks are discussed． Much first-hand information added in the paper can provide an important reference value for the study of large earthquake recurrence rule and the med- and long-term earthquake prediction of the segment from Xinyi to Wuhe in the Tancheng-Lujiang fault zone．