记者从国新办发布会获悉,我国将完善立体化监测网络,在重点地区、京津冀、沿海及西南西北等地区加强地震观测站网建设,实现全国地震监测能力达到1.0—2.5级,全面提升地震监测预报预警能力。
AI-generated summary
国务院新闻办公室举行“开局起步‘十五五’”系列主题新闻发布会,介绍防震减灾工作部署。
记者从国务院新闻办公室今天(21日)举行的“开局起步‘十五五’”系列主题新闻发布会上了解到,为进一步提升地震监测预报预警能力,我国将完善立体化监测网络。
在重点地区建设形变、流体、电磁等地球物理密集观测台网;
在京津冀等地区建设深井观测站,获取更高精度、更高时空分辨率的科学数据,提升地震前兆信息捕捉能力;
在沿海海域建设海洋地震观测站;
在西南、西北等地区加密布设地震监测站,拓展海域和西部地区的地震监测能力及范围。
融合各类专用地震站网,并将其纳入全国站网体系,实现我国地震监测能力达到1.0—2.5级。
监测能力级别数值越小
监测能力越强
在防震减灾工作中,地震监测能力是一个核心指标,它衡量的是一个地区的地震台网能够准确记录到的最小地震。监测能力级别数值越小,监测能力越强。
地震按震级大小可分为几类?
地震按震级大小的划分大致如下:
弱震:震级小于3级。如果震源不是很浅,这种地震人们一般不易觉察。
有感地震:震级大于或等于3级、小于或等于4.5级。这种地震人们能够感觉到,但一般不会造成破坏。
中强震:震级大于4.5级、小于6级,属于可造成损坏或破坏的地震,但破坏轻重还与震源深度、震中距等多种因素有关。
强震:震级大于或等于6级,是能造成严重破坏的地震。其中震级大于或等于8级的又称为巨大地震。

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