Present-day Kinematics and Dynamics of the Eastern Mediterranean

东地中海的当今运动学和动力学

• 批准号: 0838488
• 负责人: Robert Reilinger
• 金额: $ 70.08万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-05-01 至 2013-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0838488&HistoricalAwards=false
• 关键词: Present; day; Kinematics; Dynamics; Eastern

We are using continuous and survey-mode Global Positioning System (GPS) and other relevant geological and geophysical information to clarify the special and temporal character of active deformation, and the forces driving this deformation, in the E. Mediterranean/Caucasus/Middle East region where the African, Arabian, and Eurasian plates interact. We place special emphasis on understanding the relationship between active deformation and geologic structures, and interactions between mantle dynamics and crustal tectonics. Our previous studies now provide an accurate (≤1mm/yr) description of regional deformation that is helping to define the basic principles that control continental deformation in this zone of plate interaction. These regional deformation patterns provide the framework for the more detailed studies we are now pursuing, including, (1) characterizing deformation (strain accumulation) along the main faults that control the large majority of deformation in this region (i.e., plate and block boundaries), (2) constraining better deformation in the S.E. Aegean (Greece and Turkey) that is closely related to active subduction and associated earthquake and tsunami hazards along the Hellenic trench, (3) quantifying deformation around unstable, continental triple junctions, including the Karliova and Karaman-Maras triple junctions in E Turkey, 4) determining the spatial character of strain accumulation as a function of the time in the earthquake cycle along the North Anatolian Fault, 5) monitoring and modeling postseismic deformation associated with the 1999, Izmit/Duzce earthquake sequence, and 6) working with collaborating partners to develop and apply realistic, dynamic models for active deformation of the continental lithosphere. This project involves quantifying fault behavior (rates of strain accumulation and fault locking depths), and as such provides a physical basis for earthquake forecasting (estimates of earthquake repeat times, locations, and magnitudes) and hazard mitigation. We work closely with, and provide technology transfer (GPS, deformation modeling) to, academic and government scientific research institutions in Turkey, Greece, Armenia, Azerbaijan, Georgia, Russia, and Ukraine, including many international students who participate in all aspects of the research. The geodetic infrastructure we are developing in this region is being used to constrain GPS satellite orbits, thereby contributing to other GPS research studies (geodynamics, atmospheric water vapor, LIDAR, ionospheric studies).This work is co-funded by the Geophysics and Tectonics Programs and the Office of International Science and Engineering.

我们正在使用连续和调查模式的全球定位系统（GPS）以及其他相关的地质和地球物理信息来阐明主动变形的特殊和时间特征，以及在地中海埃希氏菌/中东地区，非洲，阿拉伯人和欧洲平板相互作用的驱动这种变形的力。 我们特别强调了解主动变形与地质结构之间的关系，以及地幔动力学与地壳构造之间的相互作用。现在，我们先前的研究提供了区域变形的准确（＆＃8804; 1mm/yr）描述，该描述有助于定义控制板相互作用区域中大陆变形的基本原理。这些区域变形模式为我们正在追求的更详细的研究提供了一个框架，包括（1）沿主要断层表征变形（应变积累），这些断层控制该区域中大部分变形的大部分变形（即板和阻滞边界），（2）在S.E中限制了更好的变形。 Aegean (Greece and Turkey) that is closely related to active subduction and associated earthquake and tsunami hazards along the Hellenic trench, (3) quantifying deformation around unstable, continental triple junctions, including the Karliova and Karaman-Maras triple junctions in E Turkey, 4) determining the spatial character of strain accumulation as a function of the time in the earthquake cycle along the北安纳托利亚断层，5）与1999年，izmit/duzce地震序列相关的监测和建模后的震后变形，以及6）与合作伙伴合作开发和应用现实的动态模型，以实现大陆岩石圈的主动变形。该项目涉及量化断层行为（应变积累和断层锁定深度的速率），因此为地震预测（估计地震重复时间，位置和大小）和缓解危险提供了物理基础。 我们与土耳其，希腊，亚美尼亚，阿塞拜疆，乔治亚州，俄罗斯和乌克兰的学术和政府科学研究机构密切合作并提供技术转移（GPS，变形建模），其中包括许多参与研究各个方面的国际学生。 我们在该区域开发的大地测量基础设施用于限制GPS卫星轨道，从而为其他GPS研究（地球动力学，大气水蒸气，LIDAR，电离层研究）做出了贡献。这项工作由地球物理学和构造学计划以及国际科学和工具的办公室共同资助。