Crustal and lithosheric structure of the subducting Adriatic Plate and the external accretionary wedge in the soutern Dinarides

我们建议在2012年1月至2月为FS Meteor号科考船进行的近海活跃实验Alpha(阿德里亚岩石圈调查)期间，在黑山安装两个地震检波器。这些剖面将延伸亚得里亚海的近海海底地震仪(OBS)剖面，以实施跨越海岸线的两栖研究。海上和陆上空间站将记录在FS Meteor上进行活跃地震实验期间产生的气枪射击。合并后的数据将不仅可以成像亚得里亚海板块近海的地壳和岩石圈结构，还可以成像整个板块弯曲区域，以及板块的俯冲部分，包括顶部外部迪纳里德的活动吸积楔。这次两栖活动将是造山系统中第一个基于折射的断层扫描剖面。这一系统特别令人感兴趣的是：(1)它代表着为数不多的消减消减带之一，长期消耗大陆岩石圈；(2)从前缘挤压到楔形内部伸展的过渡发生在极短的距离内，相当大的逆冲正断层地震彼此之间只有大约30公里的距离。控制这些过程的参数在很大程度上是未知的，这项低成本的研究将为理解潜在的力学和岩石圈几何形状提供基本约束。

We propose to install two profiles of geophones in Montenegro during the active offshore experiment Alpha (Adria lithosphere investigation) which is scheduled for the research vessel FS Meteor in January-February 2012. These profiles will extend the offshore OBS (ocean bottom seismometer) profiles in the Adriatic Sea to implement a shoreline-crossing amphibious study. Offshore and onshore stations will record the airgun shots generated during the active seismic experiment onboard FS Meteor. The combined data will allow imaging the crustal and lithospheric structure not only of the Adriatic Plate offshore but also of the complete region of plate bending, and the subducting portion of the plate including the active accretionary wedge of the external Dinarides on top. This amphibious campaign would be the first refraction-based tomographic section through the orogenic system. This system is of particular interest as (1) it represents one of the few retreating subduction zones, which has consumed continental lithosphere for a long time and (2) the transition from compression at the front and extension within the wedge occurs over an extremely short distance with considerable thrustand normal-fault earthquakes being located only about 30 kilometres apart from each other. The parameters controlling these processes are largely unknown and this low-cost study will provide fundamental constraints for understanding the underlying mechanics and lithosphere geometry.