The viscosity of Earth's lower mantle inferred from sinking speed of subducted lithosphere

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10123581" target="_blank" >RIV/00216208:11320/12:10123581 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.pepi.2012.02.010" target="_blank" >http://dx.doi.org/10.1016/j.pepi.2012.02.010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.pepi.2012.02.010" target="_blank" >10.1016/j.pepi.2012.02.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The viscosity of Earth's lower mantle inferred from sinking speed of subducted lithosphere

Popis výsledku v původním jazyce

The viscosity of the mantle is indispensable for predicting Earth''s mechanical behavior at scales ranging from deep mantle material flow to local stress accumulation in earthquakes zones. But, mantle viscosity is not well determined. For the lower mantle, particularly, only few constraints result from elaborate high-pressure experiments (Karato, 2008) and a variety of viscosity depth profiles result from joint inversion of the geoid and postglacial rebound data (Forte and Mitrovica, 1996; Kaufmann andLambeck, 2000; Mitrovica and Forte, 2004). Here, we use inferred lower-mantle sinking speed of lithosphere subduction remnants as a unique internal constraint on modeling the viscosity profile. This entails a series of elaborate dynamic subduction calculations spanning a range of viscosity profiles from which we select profiles that predict the inferred sinking speed of 12 +/- 3 mm/yr (van der Meer et al., 2010). Our modeling shows that sinking speed is very sensitive to lower mantle vis

Název v anglickém jazyce

The viscosity of Earth's lower mantle inferred from sinking speed of subducted lithosphere

Popis výsledku anglicky

The viscosity of the mantle is indispensable for predicting Earth''s mechanical behavior at scales ranging from deep mantle material flow to local stress accumulation in earthquakes zones. But, mantle viscosity is not well determined. For the lower mantle, particularly, only few constraints result from elaborate high-pressure experiments (Karato, 2008) and a variety of viscosity depth profiles result from joint inversion of the geoid and postglacial rebound data (Forte and Mitrovica, 1996; Kaufmann andLambeck, 2000; Mitrovica and Forte, 2004). Here, we use inferred lower-mantle sinking speed of lithosphere subduction remnants as a unique internal constraint on modeling the viscosity profile. This entails a series of elaborate dynamic subduction calculations spanning a range of viscosity profiles from which we select profiles that predict the inferred sinking speed of 12 +/- 3 mm/yr (van der Meer et al., 2010). Our modeling shows that sinking speed is very sensitive to lower mantle vis

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DE - Zemský magnetismus, geodesie, geografie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP210%2F11%2F1366" target="_blank" >GAP210/11/1366: Materiálové vlastnosti a dynamika spodního pláště Země</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

PHYSICS OF THE EARTH AND PLANETARY INTERIORS

ISSN

0031-9201

e-ISSN

—

Svazek periodika

200

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

56-62

Kód UT WoS článku

000306047200006

EID výsledku v databázi Scopus

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