美国爱达荷州中部洛斯特河断层麦凯段晚第四纪断层陡坎与地震

地震地质 ›› 1987, Vol. 9 ›› Issue (3): 61-70.

美国爱达荷州中部洛斯特河断层麦凯段晚第四纪断层陡坎与地震

虢顺民¹, 廖玉华², 李玉龙³

1. 国家地震局地质研究所;
2. 宁夏回族自治区地震局;
3. 甘肃省地震局

收稿日期:1986-02-28 出版日期:1987-09-02 发布日期:2009-11-25

LATE QUATERNARY SCARPS AND EARTHQUAKES ON THE MACKAY SEGMENT OF THE LOST RIVER FAULT IN CENTRAL IDAHO, UNITED STATES

Guo Shun-min¹, Liao Yu-hua², Li Yu-long³

1. Geological Institute, State Seismological Bureau;
2. Seismological Bureau, Ningxia Hui Autonomous Region;
3. Gansu Province Seismological Bureau

Received:1986-02-28 Online:1987-09-02 Published:2009-11-25

摘要/Abstract

摘要： 根据断层位错和地貌位置,麦凯段断层陡坎分为三组,它们是三次史前地震的产物。根据位错量和陡坎长度对比,史前地震的震级大约为7级。利用扩散方程模拟史前7级地震发生的重复时间间隔是5—11千年。

关键词: 美国爱达荷, 洛斯特河断层陡坎, 剖面测量, 重复时间间隔

Abstract: The scarps on the Mackay segment are divided into three groups based on the different amount of displacement and their topographic location. The three groups of scarps suggest three paleoearthquakes. The paleoearthquakes on the Mackay segment had magnitudes of about 7 based on comparing the amount of the displacement and length of scarps. Using the diffusion equation to model scarps on the Mackay segment, the age estimetes suggest that the recurrence interval of magnitud 7 earthquakes is about 5-11 Ka.

Key words: Idaho of United States, Lost river fault, Scarp, Profile measurement, Recurrence interval

虢顺民, 廖玉华, 李玉龙. 美国爱达荷州中部洛斯特河断层麦凯段晚第四纪断层陡坎与地震[J]. 地震地质, 1987, 9(3): 61-70.

Guo Shun-min, Liao Yu-hua, Li Yu-long. LATE QUATERNARY SCARPS AND EARTHQUAKES ON THE MACKAY SEGMENT OF THE LOST RIVER FAULT IN CENTRAL IDAHO, UNITED STATES[J]. SEISMOLOGY AND GEOLOGY, 1987, 9(3): 61-70.