Thickness of the lithosphere beneath Turkey and surroundings from S-receiver functions
Thickness of the lithosphere beneath Turkey and surroundings from S-receiver functions
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DOI：
10.5194/se-6-971-2015
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发表时间：
2015-07
期刊：
影响因子：
3.4
通讯作者：
R. Kind;T. Eken;F. Tilmann;F. Sodoudi;T. Taymaz;F. Bulut;X. Yuan;B. Can;Felix Schneider
中科院分区：
文献类型：
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作者：
R. Kind;T. Eken;F. Tilmann;F. Sodoudi;T. Taymaz;F. Bulut;X. Yuan;B. Can;Felix Schneider
抽象。我们分析S-接收器功能，以调查土耳其和周边地区的整个地区以下的岩石圈厚度的变化。这里使用的地震数据是结合所有向公众开放的常设地震台站汇编的。我们获得了近12000个S-接收函数道，这些道表征了莫霍面和410 km深度处的不连续面之间的地震不连续性。共同转换点叠加产生约束良好的莫霍面和岩石圈-软流圈边界（LAB）的图像。从以前的研究结果表明，浅LAB深度在80和100公里之间的俯冲带以外的整个地区得到证实。我们没有观察到在北和东安纳托利亚断层LAB深度的变化。在塞浦路斯东部，我们看到阿拉伯实验室的迹象。据观察，非洲板块俯冲到爱琴海和塞浦路斯之间的北部和东部，在塞浦路斯有一个裂缝，深度约为150公里。我们还观察到在410公里深度的不连续性和一个负的不连续性以上的410，这可能表明该不连续性以上的部分熔融区。
Abstract. We analyze S-receiver functions to investigate variations of lithospheric thickness below the entire region of Turkey and surrounding areas. The teleseismic data used here have been compiled combining all permanent seismic stations which are open to public access. We obtained almost 12 000 S-receiver function traces characterizing the seismic discontinuities between the Moho and the discontinuity at 410 km depth. Common-conversion-point stacks yield well-constrained images of the Moho and of the lithosphere–asthenosphere boundary (LAB). Results from previous studies suggesting shallow LAB depths between 80 and 100 km are confirmed in the entire region outside the subduction zones. We did not observe changes in LAB depths across the North and East Anatolian faults. To the east of Cyprus, we see indications of the Arabian LAB. The African plate is observed down to about 150 km depth subducting to the north and east between the Aegean and Cyprus with a tear at Cyprus. We also observed the discontinuity at 410 km depth and a negative discontinuity above the 410, which might indicate a zone of partial melt above this discontinuity.