DOI: 10.1002/grl.50218
论文题名: Tippers at island observatories: Can we use them to probe electrical conductivity of the Earth's crust and upper mantle?
作者: Samrock F. ; Kuvshinov A.
刊名: Geophysical Research Letters
ISSN: 0094-9246
EISSN: 1944-8977
出版年: 2013
卷: 40, 期: 5 起始页码: 824
结束页码: 828
语种: 英语
英文关键词: electrical conductivity
; geomagnetic data
; ocean effect
; tippers
Scopus关键词: Electrical conductivity
; Electrical conductivity distribution
; Geoelectric structures
; Geomagnetic data
; Geomagnetic fields
; Geomagnetic variation
; Ocean effect
; tippers
; Buildings
; Electric conductivity
; Geomagnetism
; Observatories
; Structural geology
; data acquisition
; electrical conductivity
; geomagnetic field
; oceanic crust
; theoretical study
; time series
; upper mantle
英文摘要: For decades, time series of hourly-mean values of the geomagnetic field measured on a global network of observatories have been routinely used to recover the electrical conductivity distribution in midmantle depths. Nowadays, most observatories provide data in the form of minute-means. This allows for analysis of short-period geomagnetic variations, which, in principle, contain information about geoelectric structures in the crust and upper mantle. However, so far these data have been ignored for induction studies of the Earth due to a theoretical preconception. In this paper, we demonstrate that short-period responses (tippers) at island observatories, being large owing to the ocean effect, are also sensitive to 1-D structures and thus can be used for probing the Earth. This means that a huge amount of data that was not exploited hitherto for induction studies should be reconsidered as a useful source of information about geoelectric structures in oceanic regions where our knowledge is still very limited. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876809496&doi=10.1002%2fgrl.50218&partnerID=40&md5=0463919ca0904e9a1f28f0a83ff5cd02
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6510
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Geophysics, ETH Zurich, Sonneggstrasse 5, CH-8092 Zurich, Switzerland
Recommended Citation:
Samrock F.,Kuvshinov A.. Tippers at island observatories: Can we use them to probe electrical conductivity of the Earth's crust and upper mantle?[J]. Geophysical Research Letters,2013-01-01,40(5).