eprintid: 1477315
rev_number: 24
eprint_status: archive
userid: 608
dir: disk0/01/47/73/15
datestamp: 2016-05-27 14:36:41
lastmod: 2021-09-19 23:51:38
status_changed: 2016-05-27 14:36:41
type: article
metadata_visibility: show
creators_name: Rudolph, ML
creators_name: Lekić, V
creators_name: Lithgow-Bertelloni, C
title: Viscosity jump in Earth's mid-mantle
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F57
note: This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science {350, 11 December 2015}, doi: 10.1126/science.aad1929.
abstract: The viscosity structure of Earth's deep mantle affects the thermal evolution of Earth, the ascent of mantle plumes, settling of subducted oceanic lithosphere, and the mixing of compositional heterogeneities in the mantle. Based on a reanalysis of the long-wavelength nonhydrostatic geoid, we infer viscous layering of the mantle using a method that allows us to avoid a priori assumptions about its variation with depth. We detect an increase in viscosity at 800- to 1200-kilometers depth, far greater than the depth of the mineral phase transformations that define the mantle transition zone. The viscosity increase is coincident in depth with regions where seismic tomography has imaged slab stagnation, plume deflection, and changes in large-scale structure and offers a simple explanation of these phenomena.
date: 2015-12-11
date_type: published
official_url: http://dx.doi.org/10.1126/science.aad1929
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
article_type_text: Journal Article
verified: verified_manual
elements_id: 1100462
doi: 10.1126/science.aad1929
pii: 350/6266/1349
lyricists_name: Lithgow-Bertelloni, Carolina
lyricists_id: CLITH46
actors_name: Lithgow-Bertelloni, Carolina
actors_id: CLITH46
actors_role: owner
full_text_status: public
publication: Science
volume: 350
number: 6266
pagerange: 1349-1352
event_location: United States
issn: 1095-9203
citation:        Rudolph, ML;    Lekić, V;    Lithgow-Bertelloni, C;      (2015)    Viscosity jump in Earth's mid-mantle.                   Science , 350  (6266)   pp. 1349-1352.    10.1126/science.aad1929 <https://doi.org/10.1126/science.aad1929>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1477315/1/science5.pdf