Transition zone structure under a stationary hot spot: Cape Verde

被引：21

作者：

Helffrich, George ^{[1
]}

Faria, Bruno ^{[2
,3
]}

Fonseca, Joao F. B. D. ^{[3
,4
]}

Lodge, Alexandra ^{[1
]}

Kaneshima, Satoshi ^{[5
]}

机构：

[1] Univ Bristol, Bristol BS8 1RJ, Avon, England

[2] Inst Nacl Meteorol & Geofis, S Vicente, Cape Verde

[3] Inst Super Tecn, Dept Phys, P-1049001 Lisbon, Portugal

[4] Inst Super Tecn, ICIST, P-1049001 Lisbon, Portugal

[5] Tokyo Inst Technol, Meguro Ku, Tokyo 1528551, Japan

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 2010年 / 289卷 / 1-2期

关键词：

Cape Verde; hot spot; transition zone; receiver function; MANTLE PLUMES; HOTSPOTS; TOPOGRAPHY; BENEATH;

D O I：

10.1016/j.epsl.2009.11.001

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We report on a two-year seismic deployment in the Cape Verde Islands, one goal of which was to study the upper mantle to determine its structure under a hot spot that is stationary in the hot spot reference frame. We find from analysis of P-to-S receiver functions estimated from broadband seismic recordings that, within uncertainty, the time separation between the 410 and 660 km discontinuities is normal compared to radial earth models. Thus, to exist, even stationary hot spots do not require vertical thermal anomalies from deep melting sources anchored in the lower mantle or at the core-mantle boundary or their anomalies are narrower than similar to 250 km in the upper mantle. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：156 / 161

页数：6

共 50 条

[1] Dynamical characteristics of the Cape Verde frontal zone
Pérez-Rodríguez, P
Pelegrí, JL
Marrero-Díaz, A
SCIENTIA MARINA, 2001, 65 : 241 - 250
[2] EUROPE UNDER THE EYES OF CAPE VERDE
Pereira, Susana Marques
HUMANITAS-PORTUGAL, 2011, 63 : 637 - 646
[3] Linking the Canary and Cape-Verde hot-spots, Northwest Africa
Patriat, Martin
Labails, Cinthia
MARINE GEOPHYSICAL RESEARCH, 2006, 27 (03) : 201 - 215
[4] Linking the Canary and Cape-Verde Hot-Spots, Northwest Africa
Martin Patriat
Cinthia Labails
Marine Geophysical Researches, 2006, 27 : 201 - 215
[5] On heat conductors with a stationary hot spot
Rolando Magnanini
Shigeru Sakaguchi
Annali di Matematica Pura ed Applicata, 2004, 183 : 1 - 23
[6] On heat conductors with a stationary hot spot
Magnanini, Rolando
Sakaguchi, Shigeru
ANNALI DI MATEMATICA PURA ED APPLICATA, 2004, 183 (01) : 1 - 23
[7] Crustal and uppermost mantle structure of Cape Verde from ambient noise tomography
Carvalho, J.
Silveira, G.
Kiselev, S.
Custodio, S.
Ramalho, R. S.
Stutzmann, E.
Schimmel, M.
GEOPHYSICAL JOURNAL INTERNATIONAL, 2022, 231 (02) : 1421 - 1433
[8] The mnemonic transition: The rise of an anti-anticolonial memoryscape in Cape Verde
Cardina, Miguel
Rodrigues, Ines Nascimento
MEMORY STUDIES, 2021, 14 (02) : 380 - 394
[9] Territorial development in the Cape Verde archipelago under the Estado Novo dictatorship (1953-1974)
Pinto, Paulo Tormenta
de Almeida, Rogerio Vieira
PLANNING PERSPECTIVES, 2015, 30 (04) : 597 - 623
[10] Detrital record of the denudation of volcanic islands under sub-tropical climate (Cape Verde)
Dinis, Pedro A.
Cabral Pinto, Marina M. S.
Garzanti, Eduardo
Rocha, Fernando T.
GEOCHEMISTRY, 2019, 79 (02): : 235 - 246

← 1 2 3 4 5 →