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Seismic evidence for a tilted mantle plume and north–south mantle flow beneath Iceland

Seismic evidence for a tilted mantle plume and north–south mantle flow beneath Iceland


Titill: Seismic evidence for a tilted mantle plume and north–south mantle flow beneath Iceland
Höfundur: Shen, Yang
Solomon, Sean C.
Bjarnason, Ingi Þorleifur   orcid.org/0000-0001-5716-7053
Nolet, Guust
Morgan, W.Jason
Allen, Richard M.
Vogfjörð, Kristín
Jakobsdóttir, Steinunn
Stefánsson, Ragnar
Julian, B.R.
... 1 fleiri höfundar Sýna alla höfunda
Útgáfa: 2002-04
Tungumál: Enska
Umfang: 261-272
Háskóli/Stofnun: Háskóli Íslands
University of Iceland
Svið: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Deild: Raunvísindastofnun (HÍ)
Science Institute (UI)
Birtist í: Earth and Planetary Science Letters;197(3-4)
ISSN: 0012-821X
DOI: 10.1016/S0012-821X(02)00494-6
Efnisorð: Mantle plumes; Transition zones; Discontinuities; Convection; Iceland; Jarðmöttull; Jarðskorpa; Jarðskjálftavirkni; Ísland
URI: https://hdl.handle.net/20.500.11815/879

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Tilvitnun:

Shen, Y., Solomon, S. C., Bjarnason, I. T., Nolet, G., Morgan, W. J., Allen, R. M., . . . Foulger, G. R. (2002). Seismic evidence for a tilted mantle plume and north–south mantle flow beneath Iceland. Earth and Planetary Science Letters, 197(3), 261-272. doi:https://doi.org/10.1016/S0012-821X(02)00494-6

Útdráttur:

Shear waves converted from compressional waves at mantle discontinuities near 410- and 660-km depth recorded by two broadband seismic experiments in Iceland reveal that the center of an area of anomalously thin mantle transition zone lies at least 100 km south of the upper-mantle low-velocity anomaly imaged tomographically beneath the hotspot. This offset is evidence for a tilted plume conduit in the upper mantle, the result of either northward flow of the Icelandic asthenosphere or southward flow of the upper part of the lower mantle in a no-net-rotation reference frame.

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