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Title:
Temporal variations in the convective style of planetary mantles

Authors:
Loddoch, A; Stein, C; Hansen, U

Author Full Names:
Loddoch, Alexander; Stein, Claudia; Hansen, Ulrich

Source:
EARTH AND PLANETARY SCIENCE LETTERS 251 (1-2): 79-89 NOV 15 2006

Language:
English

Document Type:
Article

Author Keywords:
mantle convection; convective regimes; episodic regime; stagnant lid; transitional behaviour

Keywords Plus:
STAGNANT LID CONVECTION; EARLY PLATE-TECTONICS; THERMAL EVOLUTION; DEPENDENT VISCOSITY; VARIABLE-VISCOSITY; MAGNETIC-FIELD; MARS; VENUS; FLUID; HISTORY

Abstract:
Investigations of mantle convection with temperature- and strain-rate-dependent viscosity have shown the existence of fundamentally different convective styles: By varying e.g. the Rayleigh number, the viscosity contrast or the strain-rate dependency of viscosity, the planform of convection in the asymptotic stationary state changes from the so-called stagnant lid regime to an episodic behaviour and further to a state characterised by a permanently mobilised surface. Our studies suggest that this transition may not only be induced by a change of parameters but also occurs temporally for fixed parameters. We have in fact observed convective systems in the stagnant lid regime that show isolated events of surface mobilisation occurring out of a thermally equilibrated state. We use a 3D numerical mantle convection model to investigate mantle convection and surface dynamics as a coupled fluid dynamical system. Our studies focus on the existence of a transitional regime in which t!
 emporal variations between the stagnant lid and the episodic regime occur. We were able to deduce a mobilisation criterion that describes the stability of the stagnant surface, thus allowing for a quantitative analysis of the transition to a (temporarily) mobilised surface. This criterion is also suitable to predict the occurrence of surface mobilisation events. (c) 2006 Elsevier B.V All rights reserved.

Reprint Address:
Loddoch, A, Inst Geophys, Corrensstr 24, D-48149 Munster, Germany.

Research Institution addresses:
Inst Geophys, D-48149 Munster, Germany

E-mail Address:
loddoch@earth.uni-muenster.de; stein@earth.uni-muenster.de; hansen@earth.uni-muenster.de

Cited References:
ARKANIHAMED J, 1994, J GEOPHYS RES-PLANET, V99, P2019.
BREUER D, 2003, J GEOPHYS RES-PLANET, V108.
CHOBLET G, 2001, GEOPHYS RES LETT, V28, P3035.
CONNERNEY JEP, 2005, P NATL ACAD SCI USA, V102, P14970.
FOWLER AC, 1996, J GEOPHYS RES-PLANET, V101, P4755.
GRASSET O, 1998, J GEOPHYS RES-SOL EA, V103, P18171.
HAUCK SA, 2002, J GEOPHYS RES, V107, P1.
MORESI L, 1998, GEOPHYS J INT, V133, P669.
NIMMO F, 2000, J GEOPHYS RES-PLANET, V105, P11969.
REESE CC, 1998, J GEOPHYS RES-PLANET, V103, P13643.
REESE CC, 1999, ICARUS, V139, P67.
SCHUBERT G, 1979, ANN REV EARTH PLANET, V7, P289.
SCHUBERT G, 1990, J GEOPHYS RES-SOLID, V95, P14095.
SLEEP NH, 1994, J GEOPHYS RES, V99, P5639.
SOLOMATOV S, 2004, J GEOPHYS RES, V109.
SOLOMATOV VS, 1995, PHYS FLUIDS, V7, P266.
SPOHN T, 1991, ICARUS, V90, P222.
STEIN C, 2004, PHYS EARTH PLANET IN, V142, P225.
STEIN C, 2005, THESIS U MUNSTER.
STENGEL KC, 1982, J FLUID MECH, V120, P411.
STROM RG, 1994, J GEOPHYS RES, V99, P10899.
TACKLEY PJ, 2000, GEOCHEM GEOPHY GEOSY, P1.
TROMPERT RA, 1996, GEOPHYS ASTRO FLUID, V83, P261.
TURCOTTE DL, 1993, J GEOPHYS RES-PLANET, V98, P17061.
ZUBER MT, 2001, NATURE, V412, P220.

Cited Reference Count:
25

Times Cited:
0

Publisher:
ELSEVIER SCIENCE BV; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS

Subject Category:
Geochemistry & Geophysics

ISSN:
0012-821X

IDS Number:
109HJ