Collaborative Research: Interaction Between Long Valley Volcanism and Deformation of the Hilton Block, Sierra Nevada, CA

合作研究：长谷火山活动与加利福尼亚州内华达山脉希尔顿街区变形之间的相互作用

• 批准号: 0073936
• 负责人: Susan Owen
• 金额: $ 14.64万
• 依托单位: University of Southern California
• 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: 2000-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0073936&HistoricalAwards=false
• 关键词: Collaborative; Research; Interaction; Between; Long

Owen, Susan E.EAR-0073936 Long Valley caldera, California, is an ideal natural laboratory for the study of interaction between volcanism and tectonics. The Hilton Block - the area in the Sierra Nevada located south of Long Valley caldera - has been one of the most seismically active regions in California. However, patterns of recent seismicity are difficult to reconcile with the observed regional strain or with stress transfer calculated from simple elastic models of volcanic inflation. Understanding the connections between volcanism and tectonics in this region will require a better understanding of both the kinematics of the Hilton Block and the mechanics of stress transfer within the caldera system. The investigators will use detailed GPS observations and simple elastic models to determine the nature and distribution of deformation in the Hilton Block. They will develop finite element models that address time- and temperature-dependent viscoelastic effects to further explore how deformation within the seismically active Hilton Block is linked to Long Valley volcanism.

Owen, Susan E.EAR-0073936 加利福尼亚州长谷火山口是研究火山活动与构造之间相互作用的理想自然实验室。希尔顿街区（Hilton Block）——位于长谷火山口以南的内华达山脉地区——一直是加州地震最活跃的地区之一。然而，最近的地震活动模式很难与观测到的区域应变或根据火山膨胀的简单弹性模型计算出的应力传递相一致。要了解该地区火山活动和构造之间的联系，需要更好地了解希尔顿区块的运动学和破火山口系统内的应力传递机制。研究人员将使用详细的 GPS 观测和简单的弹性模型来确定希尔顿区块变形的性质和分布。他们将开发有限元模型来解决与时间和温度相关的粘弹性效应，以进一步探索地震活跃的希尔顿区块内的变形如何与长谷火山活动联系起来。