地震学报2011，Vol.33Issue(6)：763-775,13.DOI:10.3969/j.issn.0253-3782.2011.06.007
新疆地区地震目录最小完整性震级和台网科学布局研究
Minimum magnitude of completeness for earthquake catalogue and scientific layout of seismic stations in Xinjiang region
摘要
Abstract
The minimum magnitude of completeness (Mc) is a fundamental and important parameter for earthquake study. It is also a key factor for evaluating detection ability of a seismic network. In the Xinjiang region with intense tectonic movement earthquakes frequently occur and geographic distribution of seismic stations is complicated. The analysis of Mc can provide useful information for seismic risk evaluation and scientific layout of seismic stations in this re-gion. For the 5 development periods of Xinjiang seismic network we examined Mc spatial distribution in each period by using OR relation analysis, and investigated temporal variation of Mc distribution for every seismic zone by means of multi-parameter description. The result shows that the Mc distribution is spatially inhomogeneous and seismic monitoring capability is rather good for Tians-han region, but it is poor for western Kunlun and other regions. For different period of seismic network development, especially since the establishment of digital seismic network during the "10th five year project", the Mc is ML1. 5-2. 0 in Tianshan and Altai seismic zone, and is ML2. 0 in northern region of western Kunlun seismic zone. Besides, the relation between Mc and station-epicenter distance, and azimuthal coverage of stations, are studied based on the data from seismological observation reports in Xinjiang region since 1988, and the scientific approach of optimizing seismic network and advancing seismic monitoring capability are discussed. It is assumed that adding short epicenter distance stations and improving azimuthal coverage of stations are necessary for advancing seismic monitoring capability in Xinjiang region.关键词
最小完整性震级/地震监测效能/震级-频度分布Key words
minimum magnitude of completeness/ seismic monitoring capability/ magnitude-frequency distribution分类
天文与地球科学引用本文复制引用
李志海,蒋长胜,黄瑜,王宝柱..新疆地区地震目录最小完整性震级和台网科学布局研究[J].地震学报,2011,33(6):763-775,13.基金项目
国家自然科学基金青年基金项目(40804010)和中国地震局地震行业专项(200708020)资助. （40804010）
