SGER: Volcanic Hazard Assessment of the Soufriere Hills Volcano, Montserrat, W.I.

9711307蒙特塞拉特的南弗里尔山火山于1995年7月18日开始喷发，迫切需要进行火山危险评估。灾害监测的正常组成部分(地震活动、地面变形等)此外，还对喷发产物进行了近乎实时的岩石学研究，以便估计火山下方岩浆储存区的压力和温度条件、熔融挥发分含量以及岩浆从储集层上升到地表的速率。这些信息至关重要，因为挥发性成分和岩浆上升速度会影响火山喷发的风格。富含水的岩浆快速上升导致爆炸性喷发，而缓慢上升导致被动脱气和喷发行为。1996年9月17日至18日，该火山短暂地从喷发转为喷发。喷发行为的改变是由于岩浆上升速度的加快所致。要求提供资金，以便让P.I.继续进行岩石学研究，估计从热情洋溢的喷发行为转变为爆炸性喷发行为的可能性。

9711307 Devine The Southfriere Hills Volcano in Montserrat began erupting on 18 July 1995, creating an urgent need for volcanic hazard assessment. normal components of hazard monitoring (seismicity, ground deformation, etc.) have been complemented by near real-time petrologic studies of eruption products in order to provide estimates of pressure and temperature conditions, and melt volatile content, in the magma storage region beneath the volcano, as well as the rate of magma ascent form that reservoir to the surface. Such information is critical because volatile content and magma ascent rate influence the eruptive style of a volcano. Rapid ascent of water-rich magmas leads to explosive eruptions, whereas slow ascent leads to passive degassing and effusive eruptive behavior. On 17-18 September 1996, the volcano changed briefly from effusive to explosive eruptive style. The change in eruptive behavior resulted from an increase in magma ascent rate. Funding is requested to allow the P.I. to continue petrologic studies that provide estimates of the likelihood of a transition from effusive to explosive eruption behavior.