Deep Geophysical Observatory in Long Valley Caldera

长谷火山口深层地球物理观测站

• 批准号: 0080841
• 负责人: I. Selwyn Sacks
• 金额: $ 26.16万
• 依托单位: Carnegie Institution of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0080841&HistoricalAwards=false
• 关键词: Deep; Geophysical; Observatory; Long; Valley

0080841Sacks This award provides partial funding support for the fabrication of an integrated downhole sensor package to be installed in the Long Valley Exploratory Well (a 3-kilometer deep hole drilled for geophysical observations in the Long Valley Caldera). Since 1980 the Long Valley Caldera has shown sustained unrest characterized by recurring earthquake swarms, dome-shaped uplift, and increased levels of fumarolic activity as well as high concentrations of CO2 gas emitted through its surface soils. The sensor package to be built will include a dilatometer/strainmeter, seismometers, and pressure sensors. The combination of measurements, made at depth and presumably close to the magmatic source, will allow probing of changes in the volcanic system with heretofore unprecedented sensitivity. ***

0080841 Sacks该合同为安装在长谷勘探井（在长谷破火山口钻一个3公里深的地球物理观测孔）中的集成井下传感器包的制造提供部分资金支持。自1980年以来，长谷火山口已显示出持续的动荡，其特征是经常发生的地震群，圆顶形隆起，以及增加的火山活动水平，以及通过其表层土壤排放的高浓度二氧化碳气体。将要建造的传感器包将包括一个应变计/应变计、地震仪和压力传感器。在深处且可能靠近岩浆源进行的测量组合将使人们能够以前所未有的灵敏度探测火山系统的变化。***