Lithosperic elastic thickness estimates in central Eurasia
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F19%3A43954880" target="_blank" >RIV/49777513:23520/19:43954880 - isvavai.cz</a>
Result on the web
<a href="http://tao.cgu.org.tw/index.php/articles/archive/geophysics/item/1622-2018092802tibet" target="_blank" >http://tao.cgu.org.tw/index.php/articles/archive/geophysics/item/1622-2018092802tibet</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3319/TAO.2018.09.28.02" target="_blank" >10.3319/TAO.2018.09.28.02</a>
Alternative languages
Result language
angličtina
Original language name
Lithosperic elastic thickness estimates in central Eurasia
Original language description
We estimate the elastic thickness of a continental lithosphere by using two approaches that combine the Vening Meinesz-Moritz (VMM) regional isostatic principle with isostatic flexure models formulated based on solving flexural differential equations for a thin elastic shell with and without considering a shell curvature. To model the response of the lithosphere on a load more realistically, we also consider lithospheric density heterogeneities. Resulting expressions describe a functional relation between gravity field quantities and mechanical properties of the lithosphere, namely Young's modulus and Poisson's ratio that are computed from seismic velocity models in prior of estimating the lithospheric elastic thickness. Our numerical study in central Eurasia reveals that both results have a similar spatial pattern, despite exhibiting also some large localized differences due to disregarding the shell curvature. Results show that cratonic formations of North China and Tarim Cratons, Turan Platform as well as parts of Siberian Craton are characterized by the maximum lithospheric elastic thickness. Indian Craton, on the other hand, is not clearly manifested. Minima of the elastic thickness typically correspond with locations of active continental tectonic margins, major orogens (Tibet, Himalaya and parts of Central Asian Orogenic Belt) and an extended continental crust. These findings generally support the hypothesis that tectonically active zones and orogens have a relatively small lithospheric strength, resulting in a significant respond of the lithosphere on various tectonic loads, compared to a large lithospheric strength of cratonic formations.
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
Terrestrial, Atmospheric and Oceanic Sciences
ISSN
1017-0839
e-ISSN
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Volume of the periodical
30
Issue of the periodical within the volume
1
Country of publishing house
TW - TAIWAN (PROVINCE OF CHINA)
Number of pages
12
Pages from-to
73-84
UT code for WoS article
000461562200007
EID of the result in the Scopus database
2-s2.0-85063267038