Satellite tidal magnetic signals constrain oceanic lithosphere-asthenosphere boundary.
Satellite tidal magnetic signals constrain oceanic lithosphere-asthenosphere boundary.
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DOI:
10.1126/sciadv.1600798
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发表时间:
2016-09
期刊:
影响因子:
13.6
通讯作者:
Olsen N
中科院分区:
文献类型:
--
作者:
Grayver AV;Schnepf NR;Kuvshinov AV;Sabaka TJ;Manoj C;Olsen N
Researchers present results on the oceanic upper mantle electrical structure revealed by satellite-detected tidal magnetic signals. The tidal flow of electrically conductive oceans through the geomagnetic field results in the generation of secondary magnetic signals, which provide information on the subsurface structure. Data from the new generation of satellites were shown to contain magnetic signals due to tidal flow; however, there are no reports that these signals have been used to infer subsurface structure. We use satellite-detected tidal magnetic fields to image the global electrical structure of the oceanic lithosphere and upper mantle down to a depth of about 250 km. The model derived from more than 12 years of satellite data reveals a ≈72-km-thick upper resistive layer followed by a sharp increase in electrical conductivity likely associated with the lithosphere-asthenosphere boundary, which separates colder rigid oceanic plates from the ductile and hotter asthenosphere.
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影响因子:
--
作者:
CHAVE, AD
通讯作者:
CHAVE, AD
影响因子:
64.8
作者:
Naif, S.;Key, K.;Evans, R. L.
通讯作者:
Evans, R. L.
影响因子:
2.8
作者:
Sabaka, Terence J.;Olsen, Nils;Kuvshinov, Alexey
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Kuvshinov, Alexey
影响因子:
2.8
作者:
Grayver, Alexander V.;Kuvshinov, Alexey V.
通讯作者:
Kuvshinov, Alexey V.
影响因子:
5.2
作者:
Schnepf, N. R.;Kuvshinov, A.;Sabaka, T.
通讯作者:
Sabaka, T.