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| 甘东南地区中强地震多学科前兆协调性特征研究 | |
| 引用本文： | 曹玲玲,蒋子琬,王宗礼. 甘东南地区中强地震多学科前兆协调性特征研究[J]. 地震工程学报, 2003, 25(3): 258-262 |
| 作者姓名： | 曹玲玲 蒋子琬 王宗礼 |
| 作者单位： | 1. 中国地震局兰州地震研究所,甘肃,兰州,730000 2. 清水县地震局,甘肃,清水,741400 3. 中国科学院兰州地质研究所,甘肃,兰州,730000 |
| 基金项目： | 地震科学联合基经资助课题(300005);中国地震局兰州地震研究所论著编号:LC2003019 |
| 摘 要： | 通过对发生在甘东南地区三次中强地震前4个前兆学科以及测震学指标的研究，发现各学科前兆异常在时空上表现出很好的协调性特征．主要表现在：各学科异常持续时间均较短；各异常以中短期为主，有一定中期异常，临震异常不明显；从震前1年到短临阶段异常显示出向震中迁移的迹象；各异常点集中分布在低b值异常区．讨论了前兆协调性与地下流体和深部热物质的运移的关系． |
| 关 键 词： | 甘东南 中强地震 前兆 协调性 |
| 文章编号： | 1000-0844(2003)03-0258-05 |
| 收稿时间： | 2003-03-26 |
| 修稿时间： | 2003-03-26 |
THE HARMONIOUS CHARACTER OF MULTI-SUBJECT PRECURSORS BEFORE MODERATE STRONG ERATHQUAKE IN SOUTH-EAST OF GANSU PROVICE |
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| CAO Ling-ling,JIANG Zi-wan and WANG Zong-li. THE HARMONIOUS CHARACTER OF MULTI-SUBJECT PRECURSORS BEFORE MODERATE STRONG ERATHQUAKE IN SOUTH-EAST OF GANSU PROVICE[J]. China Earthguake Engineering Journal, 2003, 25(3): 258-262 | |
| Authors: | CAO Ling-ling JIANG Zi-wan WANG Zong-li |
| Affiliation: | Lanzhou Institute of Seismology, CSB, Lanzhou 730000, China,Seismological Bureau of Qingshui County, Gansu Qingshui 741400, China and Lanzhou Institute of Geology, CAS, Lanzhou 730000, China |
| Abstract: | Based on study of some precursors before 3 moderate strong earthquakes in south-east part of Gansu provice, it is found that all kinds of precursors show harmonious character in temporal-spatial. The result shows that the anomalies last shorter time and mainly in middle-short term, but in impending term is not clear. From one year to short-impending stage, the anomalies migrate to earthquake epicenter. The distribution of precursor anomalies and low b value are concentrated to same area. The relationship between the harmonious character of precursors and transportation of underground fluid and thermal material in deep crustal is discussed. |
| Keywords: | South-east of Gansu provice Moderate strong earthquake Precursor Harmonious |
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