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A High-Resolution G...
A High-Resolution Global Moho Model from Combining Gravimetric and Seismic Data by Using Spectral Combination Methods
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- Dashtbazi, Arash (författare)
- KN Toosi Univ Technol, Fac Geodesy & Geomat Engn, Tehran 1996715433, Iran.,Faculty of Geodesy and Geomatics Engineering, K. N. Toosi University of Technology, Tehran 19967-15433, Iran
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- Voosoghi, Behzad (författare)
- KN Toosi Univ Technol, Fac Geodesy & Geomat Engn, Tehran 1996715433, Iran.,Faculty of Geodesy and Geomatics Engineering, K. N. Toosi University of Technology, Tehran 19967-15433, Iran
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- Bagherbandi, Mohammad, Professor (författare)
- Högskolan i Gävle,KTH,Geodesi och satellitpositionering,Univ Gävle, Dept Comp & Spatial Sci, SE-80176 Gävle, Sweden.,Div Surveying Geodesy Land Law & Real Estate Plann,Samhällsbyggnad,Geospatial Information Science
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- Tenzer, Robert (författare)
- Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hong Kong, Peoples R China.,Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong
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KN Toosi Univ Technol, Fac Geodesy & Geomat Engn, Tehran 1996715433, Iran Faculty of Geodesy and Geomatics Engineering, K. N. Toosi University of Technology, Tehran 19967-15433, Iran (creator_code:org_t)
- 2023-03-13
- 2023
- Engelska.
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Ingår i: Remote Sensing. - : MDPI AG. - 2072-4292. ; 15:6
- Relaterad länk:
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https://doi.org/10.3...
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https://hig.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The high-resolution Moho depth model is required in various geophysical studies. However, the available models' resolutions could be improved for this purpose. Large parts of the world still need to be sufficiently covered by seismic data, but existing global Moho models do not fit the present-day requirements for accuracy and resolution. The isostatic models can relatively reproduce a Moho geometry in regions where the crustal structure is in an isostatic equilibrium, but large segments of the tectonic plates are not isostatically compensated, especially along active convergent and divergent tectonic margins. Isostatic models require a relatively good knowledge of the crustal density to correct observed gravity data. To overcome the lack of seismic data and non-uniqueness of gravity inversion, seismic and gravity data should be combined to estimate Moho geometry more accurately. In this study, we investigate the performance of two techniques for combining long- and short-wavelength Moho geometry from seismic and gravity data. Our results demonstrate that both Butterworth and spectral combination techniques can be used to model the Moho geometry. The results show the RMS of Moho depth differences between our model and the reference models are between 1.7 and 4.7 km for the Butterworth filter and between 0.4 and 4.1 km for the spectral combination.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Moho depth
- global Moho model
- crust
- isostasy
- seismic data
- spectral combination
- gravity inversion
- Earth's interior modeling
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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