Moho modeling using FFT technique
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F17%3A43933109" target="_blank" >RIV/49777513:23520/17:43933109 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s00024-017-1503-4" target="_blank" >http://dx.doi.org/10.1007/s00024-017-1503-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00024-017-1503-4" target="_blank" >10.1007/s00024-017-1503-4</a>
Alternative languages
Result language
angličtina
Original language name
Moho modeling using FFT technique
Original language description
To improve the numerical efficiency, the Fast Fourier Transform (FFT) technique was facilitated in Parker–Oldenburg’s method for a regional gravimetric Moho recovery, which assumes the Earth’s planar approximation. In this study, we extend this definition for global applications while assuming a spherical approximation of the Earth. In particular, we utilize the FFT technique for a global Moho recovery, which is practically realized in two numerical steps. The gravimetric forward modeling is first applied, based on methods for a spherical harmonic analysis and synthesis of the global gravity and lithospheric structure models, to compute the refined gravity field, which comprises mainly the gravitational signature of the Moho geometry. The gravimetric inverse problem is then solved iteratively in order to determine the Moho depth. The application of FFT technique to both numerical steps reduces the computation time to a fraction of that required without applying this fast algorithm. The developed numerical producers are used to estimate the Moho depth globally, and the gravimetric result is validated using the global (CRUST1.0) and regional (ESC) seismic Moho models. The comparison reveals a relatively good agreement between the gravimetric and seismic models, with the RMS of differences (of 4–5 km) at the level of expected uncertainties of used input datasets, while without the presence of significant systematic bias.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10500 - Earth and related environmental sciences
Result continuities
Project
<a href="/en/project/LO1506" target="_blank" >LO1506: Sustainability support of the centre NTIS - New Technologies for the Information Society</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Pure and Applied Geophysics
ISSN
0033-4553
e-ISSN
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Volume of the periodical
174
Issue of the periodical within the volume
4
Country of publishing house
DE - GERMANY
Number of pages
15
Pages from-to
1743-1757
UT code for WoS article
000398042000014
EID of the result in the Scopus database
2-s2.0-85016592815