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首页> 外文期刊>Tectonophysics: International Journal of Geotectonics and the Geology and Physics of the Interior of the Earth >An approach to Moho discontinuity recovery from on-orbit GOCE data with application over Indo-Pak region
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An approach to Moho discontinuity recovery from on-orbit GOCE data with application over Indo-Pak region

机译：一种通过在Indo-Pak地区应用从轨道GOCE数据恢复Moho不连续性的方法

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摘要

In this research, a modified form of Vening Meinesz-Moritz (VMM) theory of isostasy for the second-order radial derivative of gravitational potential, measured from the Gravity field and steady-state Ocean Circulation Explorer (GOCE), is developed for local Moho depth recovery. An integral equation is organised for inverting the GOCE data to compute a Moho model in combination with topographic/bathymetric heights of SRTM30, sediment and consolidated crystalline basement and the laterally-varying density contrast model of CRUST1.0. A Moho model from EGM2008 to degree and order 180 is also computed based on the same principle for the purpose of comparison. In addition, we compare both of them with the 3 available seismic Moho models; two global and one regional over the Indo-Pak region. Numerical results show that our GOCE-based Moho model is closer to the all seismic models than that of EGM2008. The model is closest to the regional one with a standard deviation of 5.5 km and a root mean squares error of 7.8 km, which is 23 km smaller than the corresponding one based on EGM2008. (C) 2016 Elsevier B.V. All rights reserved.
机译：在这项研究中，针对重力场和稳态海洋环流探测器（GOCE）测得的重力势二阶径向导数的等静压维涅斯-莫里兹（VMM）同构理论形式已开发出来，用于局部莫霍面深度恢复。组织了一个积分方程，用于反转GOCE数据，以结合SRTM30的地形/测深高度，沉积物和固结的结晶基底以及CRUST1.0的横向变化密度对比模型来计算Moho模型。为了进行比较，还基于相同的原理计算了从EGM2008到度数和阶数180的Moho模型。此外，我们将它们与3个可用的地震Moho模型进行了比较;印巴地区有两个全球性地区和一个地区。数值结果表明，与EGM2008相比，基于GOCE的Moho模型更接近于所有地震模型。该模型最接近区域模型，标准偏差为5.5 km，均方根误差为7.8 km，比基于EGM2008的相应模型小23 km。 （C）2016 Elsevier B.V.保留所有权利。

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