| 波速比异常空间演化与主震位置预测 |
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| 引用本文： | 秦保燕,张元生.波速比异常空间演化与主震位置预测[J].西北地震学报,2000,22(1):6-10. |
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| 作者姓名： | 秦保燕 张元生 |
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| 作者单位： | 中国地震局兰州地震研究所,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金资助项目 !批准号 :496 742 10 |
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| 摘 要： | 以组合模式为基础，应用“交会法”探讨了甘肃省及邻区几次中强地震前ｕｐ／ｕｓ正负异常区的动态演化特征与主震位置的关系，发现主震发生在ｕｐ＝ｕｓ正负异常区的边界附近或多个异常区之间的联接地区，认为波速比异常的成因与调整背地里元的运动有密切的关系。本的讨论再次证明了“交会法”在预测主震位置中的普适性。
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| 关 键 词： | 动态空间异常 主震位置预测 地震预报 |
| 收稿时间： | 1999/10/14 0:00:00 |
SPATIAL EVOLUTION OF WAVE VELOCITY RATIO ANOMALY AND PREDICTION OF MAIN EARTHQUAKE LOCATION |
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| QIN Bao yan and ZHANG Yuan sheng.SPATIAL EVOLUTION OF WAVE VELOCITY RATIO ANOMALY AND PREDICTION OF MAIN EARTHQUAKE LOCATION[J].Northwestern Seismological Journal,2000,22(1):6-10. |
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| Authors: | QIN Bao yan and ZHANG Yuan sheng |
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| Institution: | Lanzhou Institute of Seismology, CSB, Lanzhou 730000, China and Lanzhou Institute of Seismology, CSB, Lanzhou 730000, China |
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| Abstract: | Based on the comprehensive model,the relation between v P/ v S anomalous area evolution characteristics, positive or negative,before some moderate or strong earthquakes and main earthquake location in Gansu and its neighborhood is discussed by using convergent method. The results show that main shock often occurs on the boundary between negative and positive anomalous areas,as well as in the crossing area of different character velocity ratio anomalies.Moreover,it is discovered that there is a close relation between wave velocity ratio anomaly and the movement of adjustment element. The convergent method of wave velocity ratio spatial anomaly boundary has universal significance for predicting earthquake location. |
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| Keywords: | Combination pattern Intersection method V P/ V S anomaly Dynamic spatial anomaly Forecast of main earthquake location |
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