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| 菏泽—濮阳及附近地区震源深度及波速比变化 | |
| 引用本文： | 林眉,王洪水,冀东普,王峰吉.菏泽—濮阳及附近地区震源深度及波速比变化[J].华北地震科学,2010,28(1):31-35. |
| 作者姓名： | 林眉 王洪水 冀东普 王峰吉 |
| 作者单位： | 1. 中国科学技术大学,合肥,230026山东省地震局,济南,250014 2. 淄博市地震局,淄博,255000 3. 山东省地震局,济南,250014 |
| 基金项目： | 山东省自然科学基金项目 |
| 摘 要： | 计算了发生在濮阳及附近地区(35.5°~36.0°N,115.1°~115.7°E)地震的波速比,并进行T检验。结果表明,研究区内2001~2008年发生的41次ML≥2.6级地震波速比值属于正常变化。通过1970~2008年菏泽—濮阳及附近地区(35.1°~36.0°N,115.1°~115.7°E)发生的ML≥3级地震震源深度分析,发现1983年(11月7日菏泽5.9级地震前,研究区内震源深度变化大(-h=19 km),而5.9级地震后至2008年震源深度浅(-h=13 km)的特点。 |
| 关 键 词： | 菏泽-濮阳地区 波速比 震源深度 |
Study on Vp/Vs Ratio and Focal Depth in Heze-Puyang Area |
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| LIN Mei,WANG Hong-shui,JI Dong-pu,WANG feng-ji.Study on Vp/Vs Ratio and Focal Depth in Heze-Puyang Area[J].North China Earthquake Sciences,2010,28(1):31-35. | |
| Authors: | LIN Mei WANG Hong-shui JI Dong-pu WANG feng-ji |
| Institution: | 1. University of Science and Technology of China, Hefei 230026, China; 2. Earthquake Administration of Shandong Province, Jinan 250014, China; 3. Earthquake Administration of Zibo City, Zibo 255000, China) |
| Abstract: | In this paper, the wave velocity ratio in the Puyang and its surrounding area （35. 1°-36.0°N, 115.1°-115.7°E） is calculated and tested with T--test. The results show that the Vp/Vs ratio of this area calculated on basis of 41 ML≥2.6 earthquakes is normal in the period of 2001-2008. The focal depth of ML≥3 earthquakes occurred in Heze--Puyang and its surrounding area （35.1°-36.0°N, 115.1°-115.7° E） from 1970 to 2008 is analyzed. The result indicates that focal depth （average of 19kin） of the earthquakes occurred before Heze 1983 Ms5. 9 earthquake are deeper than that （average of 13 kin） of earthquakes occurred after the Heze 1983 MsS. 9 earthquake. |
| Keywords: | Heze--Puyang area Vp/Vs ratio focal depth |
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