Possibilities of inversion of satellite third-order gravitational tensor onto gravity anomalies: a case study for central Europe

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F17%3A43931574" target="_blank" >RIV/49777513:23520/17:43931574 - isvavai.cz</a>

Result on the web

<a href="https://academic.oup.com/gji/article-abstract/209/2/799/2966018/Possibilities-of-inversion-of-satellite-third?redirectedFrom=fulltext" target="_blank" >https://academic.oup.com/gji/article-abstract/209/2/799/2966018/Possibilities-of-inversion-of-satellite-third?redirectedFrom=fulltext</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Possibilities of inversion of satellite third-order gravitational tensor onto gravity anomalies: a case study for central Europe

Original language description

We investigate a numerical performance of four different schemes applied to a regional recovery of the gravity anomalies from the third-order gravitational tensor components (assumed to be observable in the future) synthetized at the satellite altitude of 200 km above the mean sphere. The first approach is based on applying a regional inversion without modelling the far-zone contribution or long-wavelength support. In the second approach we separate integral formulas into two parts, that is, the effects of the third-order disturbing tensor data within near and far zones. Whereas the far-zone contribution is evaluated by using existing global geopotential model (GGM) with spectral weights given by truncation error coefficients, the near-zone contribution is solved by applying a regional inversion. We then extend this approach for a smoothing procedure, in which we remove the gravitational contributions of the topographic-isostatic and atmospheric masses. Finally, we apply the remove-compute-restore (r-c-r) scheme in order to reduce the far-zone contribution by subtracting the reference (longwavelength) gravity field, which is computed for maximum degree 80. We apply these four numerical schemes to a regional recovery of the gravity anomalies from individual components of the third-order gravitational tensor as well as from their combinations, while applying two different levels of a white noise. We validated our results with respect to gravity anomalies evaluated at the mean sphere from EGM2008 up to the degree 250. Not surprisingly, better fit in terms of standard deviation (STD) was attained using lower level of noise.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10508 - Physical geography

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)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

GEOPHYSICAL JOURNAL INTERNATIONAL

ISSN

0956-540X

e-ISSN

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Volume of the periodical

209

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

799-812

UT code for WoS article

000402641600020

EID of the result in the Scopus database

2-s2.0-85040741762