El temblor de huajuapan de León, Oaxaca, México, del 24 de octubre de 1980

El temblor de huajuapan de León, Oaxaca, México, del 24 de octubre de 1980
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墨西哥瓦哈卡州莱昂华华潘地震,1980 年 10 月 24 日

DOI:
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发表时间:
1984
期刊:
影响因子:
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通讯作者:
R. Mota
R. Mota
中科院分区:
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文献类型:
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作者:
J. Yamamoto;Z. Jiménez;R. Mota

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对到达时间和首次运动数据的分析表明,1980年10月24日(14:54 GMT; 6.6 mb; 7.0 Ms)瓦哈卡州瓦胡亚潘-德莱昂地震的震源位于北经18.03°和西经98.20°,位于大陆板块内部65 km深处。主断裂以正常断层形式发生,可能沿一条向北88°W,向北北东倾约26°的断层。余震活动确定了一个长32公里,宽10公里,方向为西北-东南的狭长区域。地震烈度分布向东南方向比向北明显放大,这可能是由于断层的走向和破裂机制本身引起的能量聚焦现象。
The analysis of arrival times and first motion data indicates that the focus of the October 24, 1980 (14:54 GMT; 6.6 mb; 7.0 Ms) Huajuapan de Leon, Oaxaca earthquake is located at 18.03°N and 98.20°W and 65 km deep inside the Continental Plate. The main rupture occurred as normal faulting probably along a fault striking N 88° W and dipping approximately 26° toward NNE. The aftershock activity defines a 32 km long and 10 km wide elongated area oriented NW-SE. The seismic intensity distribution shows a clear amplification toward the southeast as compared to the north due possibly to an energy focusing phenomenon, caused by the orientation of the fault and the rupture mechanism itself.