This study attempts to characterize the nature of seismicity, anisotropy and coherency of deformation in the crust and upper mantle beneath the Doda- Kisthwar region (DKR), Jammu, located in the Kashmir seismic gap of NW Himalaya. Location of earthquakes using local waveforms, and shear wave splitting in local and teleseismic waveforms recorded at 5 temporary stations, are performed for this purpose. The relocation of 890 earthquakes reveals two clusters along the NE and SW part (referred to as Kisthwar and Doda cluster respectively), which is attributed to the under-thrusting of the Indian plate and uplifting of Kisthwar Window respectively.

The shear wave splitting analysis yielded a total of 47 local S and 11 XK(K)S splitting measurements. The corresponding Fast Polarization Azimuths (FPAs) show two distinct spatial patterns. In the first pattern, the FPAs are oriented along the NW direction, are perpendicular to the maximum horizontal stress, and are parallel to the structural trend as a result of oblique compression in the NW Himalaya. In the second pattern, the FPAs are oriented along the ENE-WSW direction and the corresponding delay times are found to be larger than those in the DKR. This could be because of localized deformation; the strike of fluid-filled fractures in the fault zone is also along the ENE-WSW direction, parallel to the course of the Chenab river. Thus, for both the trends, structure-induced anisotropy seems to be the most possible cause for the observed anisotropy. Further, the splitting parameters show a slight variation with depth for the respective orientation patterns.

The delay times of the XK(K)S phases vary from 0.3 to 1.3 s, and cluster around 0.5 s, with the majority of FPAs, oriented along the ENE-WSW direction. This can be reconciled in terms of a combined effect of absolute plate motion (APM) related strain and finite strain induced by compression. The inconsistency in the upper crust and upper mantle anisotropy does not favour a coherently distributed lithospheric deformation in this segment of the NW Himalaya. The source of anisotropy in the upper crust is complex compared to that in the upper mantle.

这项研究试图描述位于喜马拉雅山西北部克什米尔地震带的Doda-Kisthwar地区（DKR）下方的地壳和上地幔的地震活动性，各向异性和变形的相干性。为此，使用本地波形对地震进行定位，并在5个临时站记录的本地和远震波形中进行剪切波分裂。890次地震的重新定位揭示了东北和西南部分的两个星团（分别称为Kisthwar和Doda星团），这分别归因于印度板块的逆冲作用和Kisthwar窗的抬升。

剪切波分裂分析得出总共47个局部S和11个XK（K分裂测量 相应的快速极化方位角（FPA）显示了两个不同的空间模式。在第一种模式中，由于喜马拉雅山西北部的倾斜压缩，FPA沿西北方向定向，垂直于最大水平应力，并且平行于结构趋势。在第二种模式中，FPA沿ENE-WSW方向定向，并且发现相应的延迟时间大于DKR中的延迟时间。这可能是由于局部变形所致。断裂带中充满流体的裂缝的走向也沿着ENE-WSW方向，与Chenab河的走向平行。因此，对于这两种趋势，结构引起的各向异性似乎是观察到的各向异性的最可能原因。进一步，

XK（K）S相的延迟时间从0.3到1.3 s不等，大约在0.5 s左右，大多数FPA沿着ENE-WSW方向取向。这可以通过与绝对板运动（APM）相关的应变和压缩引起的有限应变的组合效应来协调。在西北喜马拉雅山的这一段，上地壳和上地幔各向异性的不一致并不有利于岩石圈形变的连贯分布。与上地幔相比，上地壳的各向异性是复杂的。