吉林龙岗火山群金龙顶子火山机构及灾害区划

发布时间：2018-04-30 00:02

本文选题：龙岗火山群 + 金龙顶子火山　；参考：《地震地质》2017年02期

【摘要】：金龙顶子火山是吉林龙岗火山群全新世喷发规模最大的火山。前人研究表明,该地区火山活动活跃,具有潜在喷发危险。通过对金龙顶子火山机构的解析,确定历史火山灾害类型主要有火山溅落灾害、空降火山渣灾害和熔岩流灾害等。在限定金龙顶子火山未来再次喷发类型和规模与上次相当的条件下,火山溅落灾害局限于火口2km范围内;空降火山渣灾害,距火口2~9km为高危险区,9~14km为中危险区,14~18km为低危险区;使用Volcflow模型对熔岩流进行模拟,结果表明熔岩流主要分布在金龙顶子火山周围低洼地带。
[Abstract]:Jinlongdingzi Volcano is the largest eruption in the Holocene in Longgang volcanic Group, Jilin Province. Previous studies have shown that the volcanic activity in this area is active and has potential eruption danger. By analyzing the mechanism of Jinlong Dingzi volcano, it is determined that the main types of historical volcanic disasters are volcanic splash disaster, airborne slag disaster and lava flow disaster. Under the condition of limiting the type and scale of the future eruption of Jinlongdingzi volcano, the volcanic splash disaster is confined to the 2km range of the fire mouth, the airborne slag disaster is the high risk area from the fire mouth 2~9km is 914km and the middle danger area is 18km. The Volcflow model is used to simulate the lava flow. The results show that the lava flow mainly distributes in the low-lying zone around Jinlongdingzi volcano.
【作者单位】：中国地震局地质研究所活动构造与火山重点实验室;美国宝石研究所;中国地质大学(北京);
【基金】：国家自然科学基金(41402299) 中国地震局地质研究所基本科研业务专项(IGCEA1516)共同资助
【分类号】：P317

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