Crustal Structure

地壳结构

• 批准号: 18243543
• 负责人: Professor Dr. Michael Weber
• 金额: --
• 依托单位: Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum (GFZ)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/18243543?language=en
• 关键词: Crustal; Structure

In an integrated geoscientific project we plan to study the control of crustal and upper mantlestructure on the occurrence and development of seismicity in the pull-apart basin of the DeadSea. The geoscientific projects necessary for this task consist of several mutually dependentand interlocked experiments and modeling approaches, see Fig. 6a:1. Plate Movement: Permanent GPS monuments in Jordan and temporary GPS campaigns2. Crustal Structure: Seismics and magnetotellurics3. Aero-Gravimetry: High resolution potential field data of the DST from the Sea of Galileeto the Gulf of Aqaba/Eilat4. Earthquakes & Radon: Monitoring and analyzing seismicity, radon emission, platemotion and magnetotellurics5. Geodynamic Modeling: 4D thermo-elastic modeling using the input from the other fourprojects.The crustal and lithospheric structure of the Dead Sea area will be determined in projects 2and 3 (Crustal Structure and Aero-Gravimetry) which are to be complemented by local andregional seismological projects and observations at multi-parameter stations(project 4). Thestructure of the crust and lithosphere, the actual velocity, density, deformation and rigidity ofthe plates east and west of the DST and the Dead Sea Basin (project 1) are key inputparameters for the 4D modeling (project 5), which is the central component of GEO-DESIRE.The integration of the location parameters and source solutions for events in the Dead Seaarea (project 4) will be used to derive and understand better the dynamics and geologicaldevelopment of this world geological site. Some of the key questions of plate tectonics whichwe aim to answer are:1. Why and how does plate movement open deep holes/basins in the crust?2. How are stress and strain instantaneously distributed in time and space?3. How does this process influence and control asperities and earthquakedistribution?

在一个综合地球科学项目中，我们计划研究地壳和上地幔结构对死海拉分盆地地震活动发生和发展的控制。这项任务所需的地球科学项目由几个相互依赖且相互关联的实验和建模方法组成，见图 6a:1。板块运动：约旦的永久 GPS 纪念碑和临时 GPS 活动2。地壳结构：地震和大地电磁学3。航空重力测量：从加利利海到亚喀巴湾/埃拉特的 DST 高分辨率位场数据4。地震和氡气：监测和分析地震活动、氡气发射、板块运动和大地电磁学5。地球动力学建模：使用其他四个项目的输入进行 4D 热弹性建模。死海地区的地壳和岩石圈结构将在项目 2 和 3（地壳结构和空气重力测量）中确定，并辅以当地和区域地震项目和多参数站观测（项目 4）。地壳和岩石圈的结构、DST 和死海盆地东西部板块的实际速度、密度、变形和刚度（项目 1）是 4D 建模（项目 5）的关键输入参数，该模型是 GEO-DESIRE 的核心组成部分。死海地区事件的位置参数和源解决方案（项目 4）的集成将用于更好地推导和理解 这个世界地质遗址的动态和地质发展。我们要回答的一些板块构造的关键问题是： 1．板块运动为何以及如何在地壳中打开深洞/盆地？2．应力和应变在时间和空间上的瞬时分布如何？3．这个过程如何影响和控制粗糙度和地震分布？