Back中国地震局发布《西藏巴青7.0级地震烈度图》 最高烈度为9度
中国地震局发布《西藏巴青7.0级地震烈度图》 最高烈度为9度
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中国新闻网yesterdayScience2 min readChinaView translation

中国地震局发布《西藏巴青7.0级地震烈度图》 最高烈度为9度

西藏巴青7.0级地震最高烈度为Ⅸ度(9度),9度区面积约449平方公里。

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中国地震局发布《西藏巴青7.0级地震烈度图》。此次地震最高烈度为9度,9度区面积约449平方公里,涉及西藏和青海两省区多个乡镇。

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Why It Matters

西藏那曲市巴青县10月22日夜间发生7.0级地震,中国地震局随后派出地震现场工作组开展烈度调查。

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中新网北京10月26日电 (记者 孙自法)中国地震局10月26日发布的《西藏巴青7.0级地震烈度图》显示,此次地震最高烈度为Ⅸ度(9度),9度区面积约449平方公里。

《西藏巴青7.0级地震烈度图》。中国地震局 供图

西藏自治区那曲市巴青县10月22日夜间发生7.0级地震后,中国地震局派出地震现场工作组,依照系列标准规范要求,在震区范围内开展烈度调查工作。通过对震区191个调查点的现场震害和地表破裂调查,并参考余震分布、震源机制解、仪器烈度分布图等科技支撑成果,确定此次地震的烈度分布,完成《西藏巴青7.0级地震烈度图》编制工作,并正式向社会发布。

根据地震烈度图,西藏巴青7.0级地震最高烈度为Ⅸ度(9度),宏观震中和微观震中位于西藏自治区巴青县玛如乡,造成地表破裂带长度约25公里,等震线长轴呈北北东走向,长轴约274公里,短轴约157公里,Ⅵ度(6度)区及以上面积约35145平方公里,其中西藏自治区约26141平方公里,青海省约9004平方公里。

此次地震涉及2个省(自治区)3个市(州)9个县(区)43个乡镇,其中西藏自治区2个市8个县(区)39个乡镇,青海省1个州1个县4个乡。

其中,地震烈度Ⅸ度(9度)区面积约449平方公里,主要涉及西藏自治区那曲市巴青县玛如乡、杂色镇;青海省玉树藏族自治州杂多县查旦乡,共计3个乡镇。

Ⅷ度(8度)区面积约1635平方公里,主要涉及西藏自治区那曲市巴青县玛如乡、杂色镇、岗切乡、巴青乡;青海省玉树藏族自治州杂多县查旦乡,共计5个乡镇。

Ⅶ度(7度)区面积约9703平方公里,主要涉及西藏自治区那曲市巴青县8个乡镇、比如县7个乡镇、索县3个乡镇、聂荣县1个乡;青海省玉树藏族自治州杂多县3个乡,共计22个乡镇。

Ⅵ度(6度)区面积约23358平方公里,主要涉及西藏自治区那曲市比如县9个乡镇、巴青县5个乡镇、索县7个乡镇、聂荣县4个乡、嘉黎县3个乡镇、色尼区3个乡;昌都市边坝县、丁青县各1个乡。青海省玉树藏族自治州杂多县4个乡,共计37个乡镇。

此外,位于Ⅵ度(6度)区之外的西藏、青海部分乡镇也受到波及,个别房屋出现破坏受损现象。

据介绍,宏观震中是指极震区内地震破坏最严重的地点;微观震中是指利用仪器记录的地震波信息确定的震中位置。

地表破裂带则是震源断层错动在地表产生的破裂和形变的总称,由地震断层、地震鼓包、地震裂缝、地震沟槽等组成。

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This article was originally published by 中国新闻网.

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