Strain Accumulation Versus Strain Release: A Paleoseismic Transect across the Northern Great Basin

应变积累与应变释放：横跨北部大盆地的古地震横断面

• 批准号: 0086667
• 负责人: Steven Wesnousky
• 金额: $ 28万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0086667&HistoricalAwards=false
• 关键词: Strain; Accumulation; Versus; Release; Paleoseismic

Wesnousky0086667The Great Basin province is the largest, best-exposed, and most accessible region of continental extension in the world and accounts for up to 25% of the motion across the North American - Pacfic plate boundary. Global Positioning Satellite GPS measurements operated by others are beginning to provide a picture of strain accumulation across the Basin. It is the process of strain release that results in the structure, physiography, and the spatial and temporal pattern of earthquakes that define the Basin and Range as we observe it today. Measures of both strain accumulation and strain release are required to understand the dynamics and evolution of deformation in the Basin and Range province. Neotectonic and paleoseismic techniques are being applied to active faults that bound major mountain fronts that sit subparallel to the existing GPS transects and adjacent to the I-80 corridor of Nevada. The paleoseismic studies are designed to quantify and compare the history and evolution of fault displacement through the late Quaternary to the pattern of strain accumulation that is being observed today.

Wesnousky0086667大盆地省是世界上大陆扩展地区最大，最容易接近的地区，占北美PACFIC板界的运动的25％。 由其他人运行的全球定位卫星GPS测量正在开始提供整个盆地的应变积累的图片。 这是应变释放的过程，导致地震的结构，生理学以及空间和时间模式，这些地震定义了我们今天观察到的盆地和范围。 需要进行应变积累和应变释放的度量，以了解盆地和山脉省的变形的动力学和演变。 Neotectonic和peasostic技术被应用于绑定与现有GPS横断面并毗邻内华达州I-80走廊相邻的主要山坡的主动断层。 旧研究旨在量化和比较通过第四纪晚期断层位移的历史和演变与当今观察到的应变积累模式。