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A COMBINED GLOBAL MOHO MODEL BASED ON SEISMIC AND GRAVIMETRIC DATA
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatik och Geodesi.
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatik och Geodesi.
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatik och Geodesi.
2011 (English)In: ACTA GEOD GEOPHYS HUNG, ISSN 1217-8977, Vol. 46, no 1, 25-38 p.Article in journal (Refereed) Published
Abstract [en]

The Moho depth can be determined using seismic and/or gravimetric methods. These methods will not yield the same result as they are based on different hypotheses as well as different types, qualities and distributions of data. Here we present a new global model for the Moho computed based on a stochastic combination of seismic and gravimetric Moho models. This method employs condition equations in the spectral domain for the seismic and gravimetric models as well as degree-order variance component estimation to optimally weight the corresponding harmonics in the combination. The preliminary data for the modelling are the seismic model CRUST2.0 and a new gravimetric Moho model based on the inverse solution of the Vening Meinez-Moritz isostatic hypothesis and the global Earth Gravitational Model EGM08. Numerical results show that this method of stochastic combination agrees better with the seismic Moho model (3.6 km rms difference) than the gravimetric one. The model should be a candidate for dandifying the frequently sparsely data CRUST2.0. We expect that this way of combining seismic and gravimetric data would be even more fruitful in a regional study.

Place, publisher, year, edition, pages
2011. Vol. 46, no 1, 25-38 p.
Keyword [en]
combination, crust, isostasy, Moho depth, variance component
National Category
Social and Economic Geography
Identifiers
URN: urn:nbn:se:kth:diva-31914DOI: 10.1556/AGeod.46.2011.1.3ISI: 000288160100003Scopus ID: 2-s2.0-79952565101OAI: oai:DiVA.org:kth-31914DiVA: diva2:406865
Note
QC 20110328Available from: 2011-03-28 Created: 2011-03-28 Last updated: 2011-03-28Bibliographically approved

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Eshagh, MehdiBagherbandi, MohammadSjöberg, Lars E.
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
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More styles
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  • de-DE
  • en-GB
  • en-US
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  • Other locale
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Output format
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