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Comprehensive Basic Observational Research on the 2000 Eruption of Mt. Usu and Its Application for Mitigating Related Volcanic Disasters

2000年有珠山喷发综合基础观测研究及其在减轻相关火山灾害中的应用

基本信息

批准号：
12800001
负责人：
OKADA Hiromu
金额：
--
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Special Purposes
财政年份：
2000
资助国家：
日本
起止时间：
2000 至无数据
项目状态：
已结题

项目摘要

On the occasion of 2000 eruption of Mt. Usu, Hokkaido, Japan, prompt scientific advises based on the real-time research data and accumulated knowledge over decades encouraged officials and people in the area for conducting successful evacuation in time. Ca. 15,000 people evacuated and resulted economical and social impacts were very serious at first and central government opened local emergency center in Date City.Members under this scientific program worked hard mostly based at temporary prefab observatory with collaborators over wide academic fields, discussing daily schedule and field gains, and submitting the basic knowledge daily to Mt. Usu Subcommittee of Coordinating Committee for Prediction of Volcanic Eruptions in Japan and Local Emergency Center. Basic knowledge integrated by our group was systematically communicated for the authority for the decision of evacuation cancellation and any difficult operations in risk-prone area. Direct explanation and recommendation to evacuees … More were another type of our academic tasks.Main part of the results came from precise hypocenter determination, other observational results especially from the networks of air wave and GPS, various geodetic, geoelectrical, geomagnetic, geothermal, geochemical, geomorphorogical, geological studies in the field. Modeling the course of volcanic activity and subsurface magma intrusion process, advises for possible mudflows and their mitigation scheme were another concerned subjects by the group.Termination of magmatic activity was clearly detected by the evidences of subsidence of the uplifted area and coincidental seismicity drop to background level. This mechanism was the same as that occurred 1977-1982 activity of Mt. Usu. Caution still need to the phenomena occurring at a few craters and surrounding limited area for the long-lasting geothermal phenomena.Two countries, New Zealand and French sent investigation team to Mt. Usu and scientific results by our group were acknowledged by their reports as a common sense of volcano country. Less

在2000年马鞍山喷发之际。日本北海道的USU根据实时研究数据和几十年积累的知识，及时提供科学建议，鼓励该地区的官员和人民及时成功疏散。加州起初，15,000人被疏散，造成了非常严重的经济和社会影响，中央政府在Date City开设了地方应急中心。这个科学计划的成员大多在临时预制天文台与广泛学术领域的合作者一起努力工作，讨论每日时间表和领域成果，并每天向Mt.美国苏黎世州立大学日本火山喷发预测协调委员会小组委员会和地方应急中心。我们小组整合的基本知识被系统地传达给决定取消疏散和在风险易发地区进行任何困难操作的当局。对疏散人员的直接解释和建议…更多的是我们的另一类学术任务。主要结果来自精确的震源确定，其他观测结果，特别是来自大气波和GPS网络的结果，以及野外的各种大地测量、地电、地磁、地热、地球化学、地貌和地质研究。模拟火山活动和地下岩浆侵入过程的过程，对可能的泥石流及其缓解方案的建议是该小组关注的另一个主题。从隆起区的下沉和巧合的地震活动降至背景水平的证据清楚地检测到岩浆活动的终止。这一机制与1977-1982年间山体活动的机制相同。美国。对于持续时间较长的地热现象，仍需警惕少数陨石坑及周边有限区域出现的现象。新西兰和法国两国派出考察队前往芒特山。USU和我们小组的科学成果在他们的报告中被认为是火山国家的常识。较少