The effects of rheological decoupling on slab deformation in the Earth's upper mantle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10139816" target="_blank" >RIV/00216208:11320/13:10139816 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11200-012-0259-7" target="_blank" >http://dx.doi.org/10.1007/s11200-012-0259-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11200-012-0259-7" target="_blank" >10.1007/s11200-012-0259-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effects of rheological decoupling on slab deformation in the Earth's upper mantle

Popis výsledku v původním jazyce

Processes within subduction zones have a major influence on the plate dynamics and mantle convection. Subduction is controlled by a combination of many parameters and there is no simple global relationship between the resulting slab geometry and deformation and any specific subduction parameter. In the present work we perform a parametric study of slab dynamics in a two-dimensional model with composite rheology including diffusion creep, dislocation creep and stress limiter or Peierls creep. The mechanical decoupling of the subducting and overriding plates is facilitated by a low viscosity crust. We are particularly interested in the effect of the contact of subducting and overriding plates on the plate geometry in the upper mantle. We also study the influence of the surface boundary condition and of the rheological description (yield stress of stress-limiting rheology, additional viscosity contrast at 660-km discontinuity). Our results demonstrate that the slab morphology and deformat

Název v anglickém jazyce

The effects of rheological decoupling on slab deformation in the Earth's upper mantle

Popis výsledku anglicky

Processes within subduction zones have a major influence on the plate dynamics and mantle convection. Subduction is controlled by a combination of many parameters and there is no simple global relationship between the resulting slab geometry and deformation and any specific subduction parameter. In the present work we perform a parametric study of slab dynamics in a two-dimensional model with composite rheology including diffusion creep, dislocation creep and stress limiter or Peierls creep. The mechanical decoupling of the subducting and overriding plates is facilitated by a low viscosity crust. We are particularly interested in the effect of the contact of subducting and overriding plates on the plate geometry in the upper mantle. We also study the influence of the surface boundary condition and of the rheological description (yield stress of stress-limiting rheology, additional viscosity contrast at 660-km discontinuity). Our results demonstrate that the slab morphology and deformat

Druh

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

CEP obor

DC - Seismologie, vulkanologie a struktura Země

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

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Studia Geophysica et Geodaetica

ISSN

0039-3169

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

22

Strana od-do

460-481

Kód UT WoS článku

000323315400007

EID výsledku v databázi Scopus

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