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区块变形之间的相互作用

• 批准号: 0074069
• 负责人: James Tyburczy
• 金额: $ 5.36万
• 依托单位: Arizona State University
• 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 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0074069&HistoricalAwards=false
• 关键词: Collaborative; Research; Interaction; between; Long

Koenig, ElissaEAR-0074069Long 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.

科尼格，ElissaEAR-0074069加州龙谷火山口，是研究火山活动和构造相互作用的理想天然实验室。希尔顿地块-位于内华达山脉的地区，位于长谷火山口以南-一直是加州地震最活跃的地区之一。然而，近期地震活动的模式很难与观测到的区域应变或从简单的火山膨胀弹性模型计算出的应力转移相一致。要了解该地区火山活动和构造之间的联系，就需要更好地了解希尔顿地块的运动学和火山口系统内的应力传递机制。调查人员将使用详细的GPS观测和简单的弹性模型来确定希尔顿地块变形的性质和分布。他们将开发有限元模型，解决依赖时间和温度的粘弹性效应，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有关。