Elastic Thickness Determination from on-orbit GOCE Data and CRUST1.0
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F19%3A43954889" target="_blank" >RIV/49777513:23520/19:43954889 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s00024-018-2018-3" target="_blank" >https://link.springer.com/article/10.1007/s00024-018-2018-3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00024-018-2018-3" target="_blank" >10.1007/s00024-018-2018-3</a>
Alternative languages
Result language
angličtina
Original language name
Elastic Thickness Determination from on-orbit GOCE Data and CRUST1.0
Original language description
Elastic thickness (Te) is a parameter representing the lithospheric strength with respect to the loading. Those places, having large values of elastic thickness, flexes less. In this paper, the on-orbit measured gravitational gradients of the Gravity field and steady-state Ocean Circulation Explorer (GOCE) mission are used for determining the elastic thickness over Africa. A forward computational method is developed based on the Vening Meinesz-Moritz (VMM) and flexural theories of isostasy to find a mathematical relation between the second-order derivative of the Earth’s gravity field measured by the GOCE satellite and mechanical properties of the lithosphere. The loading of topography and bathymetry, sediments and crystalline masses are computed from CRUST1.0, in addition to estimates of laterally-variable density of the upper mantle, Young’s modulus and Poisson’s ratio. The second-order radial derivatives of the gravitational potential are synthesised from the crustal model and different a priori values of elastic thickness to find which one matches the GOCE on-orbit gradient. This method is developed in terms of spherical harmonics and performed at any point along the GOCE orbit without using any planar approximation. Our map of Te over Africa shows that the intra-continental hotspots and volcanoes, such as Ahaggar, Tibesti, Darfur, Cameroon volcanic line and Libya are connected by corridors of low Te. The high values of Te are mainly associated with the cratonic areas of Congo, Chad and the Western African basin.
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
10508 - Physical geography
Result continuities
Project
<a href="/en/project/GA18-06943S" target="_blank" >GA18-06943S: Theory of processing higher-order geopotential gradients and their applications in geodesy</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
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
176
Issue of the periodical within the volume
2
Country of publishing house
CH - SWITZERLAND
Number of pages
12
Pages from-to
685-696
UT code for WoS article
000460039400010
EID of the result in the Scopus database
2-s2.0-85062302204