Sedimentary and crustal thicknesses and Poisson's ratios for the NE Tibetan Plateau and its adjacent regions based on dense seismic arrays
Sedimentary and crustal thicknesses and Poisson's ratios for the NE Tibetan Plateau and its adjacent regions based on dense seismic arrays
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基于密集地震台阵的青藏高原东北部及邻区沉积地壳厚度及泊松比
DOI：
10.1016/j.eps1.2016.12.040
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发表时间：
2017-03
影响因子：
5.3
通讯作者：
Cai Yan
中科院分区：
文献类型：
--
作者：
Wang Weilai;Wu Jianping;Fang Lihua;Lai Guijuan;Cai Yan
所得结果的水平分辨率高达0.5°× 0.5°，可用于该地区进一步的高分辨率模型构建。在四川盆地、祁连构造带、阿拉好北部地块和柴达木盆地，艾里平衡得到的地壳厚度比我们的结果要小，这与地幔岩石圈的高密度一致，可能表明高密度岩石圈整体上拉低了地壳。祁连构造带东段和鄂尔多斯地块边界区中下地壳存在高泊松比和低速带，表明这些区域可能存在部分熔融。
The sedimentary and crustal thicknesses and Poisson's ratios of the NE Tibetan Plateau and its adjacent regions are estimated by the h–κ stacking and CCP image of receiver functions from the data of 1,317 stations. The horizontal resolution of the obtained results is as high as 0.5°× 0.5°, which can be used for further high resolution model construction in the region. The crustal thicknesses from Airy's equilibrium are smaller than our results in the Sichuan Basin, Qilian tectonic belt, northern Alxa block and Qaidam Basin, which is consistent with the high densities in the mantle lithosphere and may indicate that the high-density lithosphere drags crust down overall. High Poisson's ratios and low velocity zones are found in the mid-and lower crust beneath eastern Qilian tectonic belt and the boundary areas of the Ordos block, indicating that partial melting may exist in these regions. Low Poisson's ratios and low-velocity anomalies are observed in the crust in the NE Tibetan Plateau, implying that the mafic lower crust is thinning or missing and that the mid-and lower crust does not exhibit melting or partial melting in the NE Tibetan Plateau, and weak flow layers are not likely to exist in this region.
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DOI：
10.3969/j.issn.0001-5733.2011.10.011
发表时间：
2011-10
期刊：
Chinese Journal of Geophysics
影响因子：
--
作者：
Can Ge;Yong Zheng;X. Xiong
通讯作者：
Can Ge;Yong Zheng;X. Xiong
影响因子：
2.9
作者：
Youxue Wang;W. Mooney;Xuecheng Yuan;N. Okaya
通讯作者：
Youxue Wang;W. Mooney;Xuecheng Yuan;N. Okaya
影响因子：
--
作者：
Youshun Sun;M. Toksöz
通讯作者：
Youshun Sun;M. Toksöz
DOI：
10.1007/s11430-009-0166-0
发表时间：
2010-02
期刊：
Science China Earth Sciences
影响因子：
--
作者：
Shixu Jia;Xian-kang Zhang;Jin-ren Zhao;Fu-yun Wang;Cheng-ke Zhang;Zhao-fan Xu;Ji-shun Pan;Z. L
通讯作者：
Shixu Jia;Xian-kang Zhang;Jin-ren Zhao;Fu-yun Wang;Cheng-ke Zhang;Zhao-fan Xu;Ji-shun Pan;Z. L
DOI：
10.1007/s11430-014-4903-7
发表时间：
2014-05
期刊：
Science China Earth Sciences
影响因子：
--
作者：
Shuaijun Wang;Fu-yun Wang;Jian-shi Zhang;Shixu Jia;Cheng-ke Zhang;Jin-ren Zhao;Bao-feng Liu
通讯作者：
Shuaijun Wang;Fu-yun Wang;Jian-shi Zhang;Shixu Jia;Cheng-ke Zhang;Jin-ren Zhao;Bao-feng Liu