Active Deformation in the Arabian-Eurasian Continental Collision Zone

阿拉伯-欧亚大陆碰撞带的主动变形

• 批准号: 1321796
• 负责人: Robert Reilinger
• 金额: $ 17.17万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1321796&HistoricalAwards=false
• 关键词: Active; Deformation; Arabian; Eurasian; Continental; Active; Deformation; Arabian; Eurasian; Continental

This project is aimed at determining the spatial and temporal (mainly in the case of earthquake and volcanic processes) distribution of crustal strain throughout the full extent of the Arabia-Eurasia continental collision zone. These investigations of the 2011, magnitude 7.2, Van, Turkey earthquake that occurred in the collision zone are particularly important in regard to understanding the earthquake cycle and the role of earthquake deformation in accommodating continental convergence. This project uses GPS observations developed over the past 20 years in direct cooperation with host-country partners, including Turkish, Armenian, Georgian, Azeri, Saudi Arabian, and Russian research institutions, and InSAR observations to constrain active deformation. In addition, partner institutions will extend and enhance geodetic observations throughout the region. Seismic, neotectonic, and other geophysical data are incorporated in the analysis and interpretations, and kinematic modeling strategies are used to investigate alternative hypotheses regarding the principal active structures throughout the collision zone. These kinematic constraints are used to investigate and constrain dynamic processes (i.e., the principal forces) driving continental collision and deformations in the collision zone, and the response of the lithosphere to these forces (i.e., lithospheric rheology).The results of this study have direct implications for earthquake and volcanic hazards throughout the collision zone. This is particularly important because historically the most destructive earthquakes in terms of the loss of life and property have occurred along continental collision zones and associated zones of lithospheric translation. Improved understanding of earthquake hazards is a major concern to our partners and a primary motivation for them to contribute resources to the study. Furthermore, capacity building for the host-country partners provides geodetic tools that have a broad range of applications in cartography, navigation, surveying (land management and infrastructure development), and weather forecasting among others.

该项目旨在在整个阿拉伯 - 欧洲大陆碰撞区的整个范围内确定地壳菌株的空间和时间（主要是地震和火山过程）的分布。对于在了解地震周期和地震变形在适应大陆融合中的地震周期以及地震变形的作用方面，对2011年7.2级，范，火鸡地震的研究尤为重要。该项目使用过去20年中与东道国合作伙伴直接合作的GPS观察，包括土耳其，亚美尼亚，乔治亚语，阿塞拉国，沙特阿拉伯和俄罗斯研究机构，以及限制主动变形。此外，合作伙伴机构将在整个地区扩展和增强大地观察。地震，新原校和其他地球物理数据纳入了分析和解释中，运动学建模策略用于研究有关整个碰撞区域主要活性结构的替代假设。这些运动学约束用于调查和约束动态过程（即，主要力）驱动大陆碰撞和碰撞区域的变形，以及岩石圈对这些力的响应（即岩石圈的流变学）。这项研究的结果对整个碰撞危险区域有直接影响。这尤其重要，因为从历史上看，就生命和财产丧失而言，最具破坏性的地震发生在大陆碰撞区和岩石圈翻译的相关区域。提高对地震危害的理解是我们的伴侣的主要关注点，也是他们为研究贡献资源的主要动机。此外，东道国合作伙伴的能力建设提供了地理工具，这些工具在制图，导航，测量（土地管理和基础设施开发）以及天气预报等方面具有广泛的应用。