Edifice Sector Failure at Soufriere Hills Volcano, Montserrat: Documenting the Failure Dynamics of a Hydrothermally-Altered Edifice in Three-Dimensions

蒙特塞拉特岛苏弗里埃尔山火山的建筑物部门失效：在三维空间中记录热液改造建筑物的失效动力学

基本信息

批准号：
9909673
负责人：
Barry Voight
金额：
$ 19.03万
依托单位：
Pennsylvania State Univ University Park
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2000
资助国家：
美国
起止时间：
2000-03-15 至 2003-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9909673&HistoricalAwards=false
关键词：
Edifice Sector Failure Soufriere Hills

项目摘要

9909673Voight and ElsworthThe potential for catastrophic structural failure of volcanoes and related hazards implications are now well recognized, but apart from a study at Mount St Helens, the mechanisms of collapse are poorly understood. The major edifice failure on Montserrat in December 1997 provides an unusual opportunity for a comprehensive analysis of collapse. The failure occurred on the altered south flank of Soufriere Hills volcano, generated a debris avalanche that reached the coast, and triggered a volcanic blast. The failure has been well documented, and abundant volcano monitoring data have been collected by Montserrat Volcano Observatory; one of us, BV, is a member of this organization. We propose to analyze the deformation and stability of this volcano, using powerful computer-modeling tools not used previously in volcano analyses. The study will evaluate realistic models representing gradual to sudden collapse, examine the effects of earthquake loading in a rigorous fashion, and consider the potential for collapse prediction from monitored data. The results of this study are likely to have a significant impact on evaluations of potential structural failure at other volcanoes, with an important bearing on volcano hazard management.

9909673Voight 和 Elsworth 现在人们已经充分认识到火山发生灾难性结构破坏的可能性以及相关的危害影响，但除了圣海伦斯火山的一项研究之外，人们对火山塌陷的机制知之甚少。 1997 年 12 月蒙特塞拉特岛的重大建筑物倒塌事件为全面分析倒塌现象提供了一次难得的机会。故障发生在苏弗里耶尔火山南侧的改变，产生了到达海岸的碎片雪崩，并引发了火山爆发。此次失败已有详细记录，蒙特塞拉特火山观测站也收集了丰富的火山监测数据；我们中的一员 BV 是该组织的成员。我们建议使用以前在火山分析中未使用过的强大计算机建模工具来分析这座火山的变形和稳定性。该研究将评估代表逐渐倒塌到突然倒塌的现实模型，以严格的方式检查地震荷载的影响，并考虑根据监测数据进行倒塌预测的可能性。这项研究的结果可能会对其他火山潜在结构破坏的评估产生重大影响，并对火山灾害管理产生重要影响。