【摘要】：2016年7月31日廣西蒼梧縣發(fā)生5.4級地震,震源深度10km,位于廣西、湖南、廣東3省(區(qū))交界,具有特殊的地理位置、地形地貌、人口分布、氣候條件等。此次地震相比國內(nèi)同等級地震,造成的災(zāi)害損失相對較輕,但其打破了華南少震弱震地區(qū)的平靜,應(yīng)引起足夠的重視。經(jīng)過現(xiàn)場實(shí)地考察和總結(jié)分析,得出蒼梧地震7大災(zāi)情特征:發(fā)生于少震弱震地區(qū);災(zāi)區(qū)人口密度低;災(zāi)區(qū)建筑類型單一,經(jīng)濟(jì)發(fā)展水平低;地震動持續(xù)時間短;余震少且震級低;地震未引發(fā)大型滑坡、泥石流等次生地質(zhì)災(zāi)害;臺風(fēng)等氣候?yàn)?zāi)害多發(fā),易與地震災(zāi)害疊加。文中通過介紹此次地震的基本概況,初步分析了蒼梧地震的災(zāi)害特征,總結(jié)了部分經(jīng)驗(yàn)和啟示,為華南少震弱震地區(qū)更好地應(yīng)對中強(qiáng)地震,最大限度減輕人民生命財產(chǎn)損失,提出了具有針對性的建議和應(yīng)對措施。
[Abstract]:A magnitude 5.4 earthquake occurred in Cangwu County, Guangxi on July 31, 2016, with a focal depth of 10 km. It is located at the junction of three provinces (regions) of Guangxi, Hunan and Guangdong. It has special geographical location, landform, population distribution and climatic conditions. The disaster loss caused by this earthquake is relatively lighter than that of the same magnitude earthquake in China, but it breaks the calm of the area with less earthquakes and weak earthquakes in South China, which should be paid enough attention to. After on-the-spot investigation and summing up and analysis, it is concluded that the Cangwu earthquake occurred in the weak earthquake area, the population density was low, the building type was single, the economic development level was low, the duration of ground motion was short; Small aftershocks and low magnitude; earthquakes did not cause large-scale landslides, debris flow and other secondary geological disasters; typhoons and other climatic disasters, easy to superimpose with earthquake disasters. By introducing the basic situation of the earthquake, the disaster characteristics of the Cangwu earthquake are preliminarily analyzed, and some experiences and revelations are summarized in order to better deal with moderate and strong earthquakes and to minimize the loss of people's lives and property in the areas with small earthquakes and weak earthquakes in South China. Some suggestions and countermeasures are put forward.
【作者單位】： 中國地震局地質(zhì)研究所;廣西壯族自治區(qū)地震局;廣西大學(xué);
【基金】：中國地震局地質(zhì)研究所基本科研業(yè)務(wù)專項(IGCEA1522) 國家自然科學(xué)基金(41601390) 廣西壯族自治區(qū)地震局科研合同制項目(2016006) “大中城市地震災(zāi)害情景構(gòu)建”重點(diǎn)專項(2016QJGJ14)共同資助
【分類號】：P315.9

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