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Combination of seismic and an isostatic crustal thickness models using Butterworth filter in a spectral approach
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Geoinformatics.
2012 (English)In: Journal of Asian Earth Sciences, ISSN 1367-9120, E-ISSN 1878-5786, Vol. 59, no SI, 240-248 p.Article in journal (Refereed) Published
Abstract [en]

In this study, using Butterworth filter a combined crustal thickness model based on seismic and isostatic-gravimetric models is presented in a spectral domain. Vening Meinesz-Moritz isostatic model and a seismic model which obtained from sparse seismic data are two models used in this study. The filter used helps to join two models without any jump in the overlap degree in the spectral domain. The main motivations of this study are (a) presenting a higher resolution for the crustal thickness and (b) removing non-isostatic effects from the isostatic model. The result obtained from the combined model is a synthetic Earth crustal model up to degree 180 (equivalent resolution 1° × 1°). In spite of the differences in the some parts of the Earth between the seismic and isostatic-gravimetric models, the test computations show a satisfactory agreement between the results provided. Numerical results show that this method of combination agrees with the seismic crustal thickness (about 2.0. km rms difference).

Place, publisher, year, edition, pages
2012. Vol. 59, no SI, 240-248 p.
Keyword [en]
CRUST2.0, Crustal thickness, Isostasy, Moho depth
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-105309DOI: 10.1016/j.jseaes.2012.08.008ISI: 000310942100020Scopus ID: 2-s2.0-84867401807OAI: oai:DiVA.org:kth-105309DiVA: diva2:570630
Note

QC 20121120

Available from: 2012-11-20 Created: 2012-11-20 Last updated: 2017-12-07Bibliographically approved

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  • apa
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  • de-DE
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