长白山火山灾害及其对大型工程建设的影响

长白山火山是世界著名的活火山,历史时期有过多次喷发,有再次爆发的危险.长白山火山最大的一次爆发发生在公元1199-1200年,这次大爆发的火山灰最远到达距其1 000km远的日本北部.依据这次大爆发由火山喷发空中降落堆积物、火山碎屑流和火山泥流造成的巨大火山灾害,预测了长白山火山未来爆发火山灾害的类型、强度和范围,并编制了长白山火山未来爆发火山喷发空中降落堆积物灾害预测图、火山碎屑流灾害预测图和火山泥流灾害预测图.该研究可预防和减轻火山灾害,指导核电站等大型工程选址.

Hazards of Changbaishan volcano and its impact on large engineering projects

Changbaishan volcano erupting for many times historically is a well-known volcano in the world. There is potential danger of eruptions in the Changbaishan volcano in the near future. The eruption recorded 1199-1200 A. D. is the largest one for the volcano during the Holecene, whose fallout tephra went east and lots of ash settled on the northern part of Sea of Japan and on the northern part of Japan, over 1 000 krn from Changbaishan volcano.The authors made prediction of types, intensity and effected area of the volcanic hazards during the period of Changbaishan volcano eruption in the future based on the huge disaster caused by the fallout tephra, pyroclastic flows and lahars during the period of 1199-1200 A. D. eruption of Changbaishan volcano. The fallout tephra hazards, pyroclastic flow hazard and lahar hazard predicting maps of Changbaishan volcano eruption were made, which has important significance for the prevention of volcanic disaster, mitigation of volcanic disaster and place selection of large engineering projects, such as nuclear power station, etc.