Lithospheric Structure and Seismotectonics of the Gibralter Arc and Alboran Sea of Northern Morocco and Southern Spain

9627855 Barazangi这项研究是康奈尔大学与摩洛哥和西班牙研究机构的合作，目的是绘制非洲和伊比利亚大陆板块交汇边界的地壳和上地幔地震结构图。这一复杂的形变边界今天仍然活跃，浅层和中等深度的地震活动都证明了这一点，其中包括构成直布罗陀弧形的摩洛哥Rif和西班牙Btic板间山脉以及阿尔博兰海。许多相互竞争的模型被提出来解释这些引人注目的弧形褶皱和逆冲山带与邻近的阿尔博兰盆地自早中新世以来的明显同时代发展。可能的模式从被困的微板到俯冲或分层。西班牙和摩洛哥的联合数字地震台网(后者的安装部分由国家科学基金会资助)提供了49个台站进行数据分析。精确的地震定位和震源机制确定以及三维地震速度和衰减图将用于区分相互竞争的形变模型。***

9627855 Barazangi This research is a collaboration between Cornell University and Moroccan and Spanish research institutions to map crustal and upper mantle seismic structure in the convergent continental plate boundary between Africa and Iberia. This complex deformation boundary is active today, as evidenced by both shallow and intermediate depth seismicity, and includes the Moroccan Rif and Spanish Betic interplate mountain belts, which constitute the Gibraltar Arc, and the Alboran Sea. A number of competing models have been suggested to explain the apparent coeval development of these striking arcuate fold and thrust mountain belts and the neighboring Alboran basin since the early Miocene. Possible models range from trapped microplates to subduction or delamination. Combined digital seismic networks in Spain and Morocco (installation of the latter was in part supported by NSF funding) provide 49 stations for data analysis. Precise earthquake location and focal mechanism determination along with 3-D seismic velocity and attenuation mapping will be used to discriminate among the competing models of deformation. ***