| 地震前后垂直形变场动态演化的量化指标 |
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| 引用本文： | 张四新,王双绪,陈兵,李风琴.地震前后垂直形变场动态演化的量化指标[J].大地测量与地球动力学,2004,24(3):35-40. |
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| 作者姓名： | 张四新 王双绪 陈兵 李风琴 |
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| 作者单位： | 中国地震局第二监测中心,西安,710054 |
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| 基金项目： | 中国地震局“十五”重点科研项目“中国大陆构造变形变化特征和重点地区应变积累状态研究” |
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| 摘 要： | 提出一种表达垂直形变场动态演化过程的量化指标——区域应变率、应变集中度。在此基础上，对南北地震带各水准监测区近30年的垂直形变资料进行了实际计算．并结合具体震例进行了对比研究。结果表明：量化指标在一定程度上能够反映地震前后形变场的动态演化过程和地壳运动状态，对地震的中长期预报有一定的积极意义。
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| 关 键 词： | 形变差异 区域应变率 应变集中度 垂直形变 地震预报 |
| 文章编号： | 1671-5942(2004)03-0035-06 |
| 修稿时间： | 2004年5月31日 |
QUANTIZED INDEX OF EVOLUTION OF VERTICAL DEFORMATION FIELD BEFORE AND AFTER EARTHQUAKE |
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| Zhang Sixin,Wang Shuangxu,Chen Bing and Li Fengqin.QUANTIZED INDEX OF EVOLUTION OF VERTICAL DEFORMATION FIELD BEFORE AND AFTER EARTHQUAKE[J].Journal of Geodesy and Geodynamics,2004,24(3):35-40. |
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| Authors: | Zhang Sixin Wang Shuangxu Chen Bing and Li Fengqin |
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| Abstract: | A quantized index of evolution of the vertical deformation field--the areal average crustal strain rate, the areal crustal strain concentration degree is put forward. By calculating the vertical deformation data of all level monitoring regions in the North South seismic belt for near 30 years,and studying some practical earthquake examples,it shows that the quantized index reflects evolution of the vertical deformation field and the state of crustal movement before and after the earthquake in a certain extent. Consequently,the quantized index is significant for medium term earthquake prediction. |
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| Keywords: | difference of deformation areal average crustal strain rate areal crustal strain concentration degree vertical deformation earthquake predication |
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