| 郯庐断裂带中段全新世活断层的特征滑动行为与特征地震 |
| |
| 引用本文： | 晁洪太,李家灵.郯庐断裂带中段全新世活断层的特征滑动行为与特征地震[J].内陆地震,1994,8(4):297-304. |
| |
| 作者姓名： | 晁洪太 李家灵 |
| |
| 作者单位： | 山东省地震局 |
| |
| 摘 要： | 郯庐断裂带中段全新世活断层由３个独立的破裂段组成。从各破裂段的运动性质、位移分布看，断层的运动属特征地震型滑动。地震活动以强震活动为主，强震具有周期性原地重复发生的特点，且其强度基本相同；中强地震缺失或很少发生；ｂ值在高震级范围内具低ｂ值的非线性关系。这些特点正是特征地震的典型表现．根据郯庐断裂带中段活断层全新世以来的活动特点看，未来该区仍然以特征地震方式活动．按郯庐带的强震复发间隔和各段的最新一次活动时代推算，未来一段时期内新沂－宿迁段复发大震的可能性较大，安丘段次之，莒县－郯城段复发大震的可能性则很小。
|
| 关 键 词： | 郯庐断裂带，全新世活断层，断层分段，特征滑动，特征地震 |
CHARACTERISTIC SLIP BEHAVIOR OF THE HOLOCENE FAULT IN THE CENTRAL SECTION OF THE TANLU FAULT ZONE AND THE CHARACTERISTIC EARTHQUAKES |
| |
| Chao Hongtai,Li Jialing,Cui Zhaowen, Zhao Qingyu.CHARACTERISTIC SLIP BEHAVIOR OF THE HOLOCENE FAULT IN THE CENTRAL SECTION OF THE TANLU FAULT ZONE AND THE CHARACTERISTIC EARTHQUAKES[J].Inland Earthquake,1994,8(4):297-304. |
| |
| Authors: | Chao Hongtai Li Jialing Cui Zhaowen Zhao Qingyu |
| |
| Abstract: | The Holocene fault in the central section of the Tanlu fault zone consists of three independent rupture segments.Based on the modes of motion and the displacement distribution,it is found that this Holocene fault has typical characteristic slip behavior.The seismic activities along each segment are strong,roughly with the same magnitude and having feature of being repeated at the same place.The earthquake activities have a nonlinear magnitude-frequency relationship in the range of the medium-strong earthquakes for the b value is low.These are the typical features of characteristic earthquakes.According to the features of fault activities during the Holocene,we think that the fault activities will still follow the characteristic slip model in future and the earthquakes will be the characteristic ones,too.So we can give the tendency prediction of strong earthquakes based on the recurrence intervals of great earthquakes and the latest activities along the fault.The results showed that the Xinyi-Suqian segment is the most dangerous one in future,the Anqiu segment is the secondary one and the Juxian-Tancheng segment is of little possibility for strong earthquakes. |
| |
| Keywords: | Tanlu fault zone Holocene fault Segmentation Characteristic slip Characteristic earthquake |
| 本文献已被 CNKI 维普 等数据库收录！ |
