Collaborative Research: Mantle Flow at Rifts: Analysis of a Natural Laboratory at the Gulf of Suez Using a PASSCAL Seismic Array and Mumerical Modeling

[9910850]这个项目涉及对红海北部的地球物理研究，在那里，裂谷终止于左死海转换区和苏伊士湾的缓慢扩张区。该地区是检验大陆裂谷过程中板块驱动软流圈流动与浮力驱动软流圈流动的良好天然实验室。这些过程的相对重要性将通过综合地表表现（地形、地质历史、盆地沉降历史）和被动地震阵列探测深部结构来评价。地震阵列又由两部分组成：用于确定基本几何形状的基本地壳结构组件和用于观察地幔流动的剪切波分裂组件。这些研究的结果将与建模研究（裂谷侧翼的弯曲建模和地幔流动模型）相结合，以形成地球动力学的综合。＊＊＊

9910850SparksThis project involves a geophysical study of the northern Red Sea where the rift terminates into the sinistral Dead Sea transform and a slow spreading zone in the gulf of Suez. This area is a good natural laboratory for testing plate driven asthenospheric flow vs. bouyancy driven asthenospheric flow during continental rifting. The relative importance of each of these processes is to be evaluated from a combination of surface manifestations (topography, geologic history, subsidence history of basins) and probing of the deep structure with a passive seismic array. The seismic array, in turn, has two parts: a basic crustal structure component to determine basic geometry and a shear wave splitting component to look at mantle flow. The results of these studies will be combined with modeling studies (flexural modeling of rift flanks and mantle flow models) to develop a synthesis of the geodynamics. ***