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An approach to Moho discontinuity recovery from on-orbit GOCE data with application over Indo-Pak region
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för data-, elektro- och lantmäteriteknik.ORCID-id: 0000-0003-0067-8631
Department of Earth Sciences, Quad-i-Azam University, Islamabad 45320, Pakistan.
2016 (engelsk)Inngår i: Tectonophysics, ISSN 0040-1951, E-ISSN 1879-3266, Vol. Part B, s. 253-262Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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 2.3 km smaller than the corresponding one based on EGM2008.

sted, utgiver, år, opplag, sider
2016. Vol. Part B, s. 253-262
Emneord [en]
Moho; Gravity field, Gradiometry, GOCE; SRTM30, Seismic model, Topography/bathymetry, Tectonics
HSV kategori
Identifikatorer
URN: urn:nbn:se:hv:diva-9876DOI: 10.1016/j.tecto.2016.07.003ISI: 000388058000001Scopus ID: 2-s2.0-84993940411OAI: oai:DiVA.org:hv-9876DiVA, id: diva2:967902
Merknad

Funders: Quaid-i-Azam University.

Tilgjengelig fra: 2016-09-10 Laget: 2016-09-10 Sist oppdatert: 2019-05-20bibliografisk kontrollert

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