CaltechTHESIS
  A Caltech Library Service

I. Multi-scale dynamics of mantle plumes and II. Compressible thermo-chemical convection and the stability of mantle superplumes

Citation

Tan, Eh (2006) I. Multi-scale dynamics of mantle plumes and II. Compressible thermo-chemical convection and the stability of mantle superplumes. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-05142006-210236

Abstract

The dynamic interaction of mantle plumes with subducted slabs and plate-scale flow is studied in Part I. We found that plumes preferentially develop on the edge of slabs and that a substantial amount of hot mantle can be trapped beneath slabs over long periods of time, leading to "mega-plume" formation. We used the solver-coupling technique to study the deflection of plume conduits and compare our result with the parameterized approach. The stability of mantle superplumes in compressible thermo-chemical convection is studied in Part II. The depth-dependent chemical density profile, caused by composition-dependent compressibility, is the preferred mechanism to stabilize the superplum

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:GeoFramework; mantle convection; plumes; solver coupling; superplumes; thermo-chemical convection
Degree Grantor:California Institute of Technology
Division:Geological and Planetary Sciences
Major Option:Geophysics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Gurnis, Michael C.
Thesis Committee:
  • Ahrens, Thomas J. (chair)
  • Helmberger, Donald V.
  • Stevenson, David John
  • Tromp, Jeroen
  • Gurnis, Michael C.
Defense Date:2 May 2006
Author Email:tan2 (AT) gps.caltech.edu
Record Number:CaltechETD:etd-05142006-210236
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-05142006-210236
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1801
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:16 May 2006
Last Modified:26 Dec 2012 02:42

Thesis Files

[img]
Preview
PDF (0Thesis.pdf) - Final Version
See Usage Policy.

6Mb
[img] Video (QuickTime) (animation2-1.mov) - Final Version
See Usage Policy.

187Kb
[img] Video (QuickTime) (animation2-2.mov) - Final Version
See Usage Policy.

885Kb
[img] Video (QuickTime) (animation2-3.mov) - Final Version
See Usage Policy.

46Kb
[img] Video (QuickTime) (animation2-4.mov) - Final Version
See Usage Policy.

267Kb
[img] Video (QuickTime) (animation3-1.mov) - Final Version
See Usage Policy.

6Mb

Repository Staff Only: item control page