Geomagnetic induction studies in Scandinavia — I. Determination of the inductive response function from the magnetometer array data
Item
Title (Dublin Core)
en-US
Geomagnetic induction studies in Scandinavia — I. Determination of the inductive response function from the magnetometer array data
Description (Dublin Core)
en-US
Data from the Munster IMS Magnetometer Array (Kuppers et al. 1979) have been analysed in the frequency domain to derive the inductive response function, C(ω, 0), from the ratio of the vertical magnetic field to the spatial gradient of the horizontal magnetic field. The response function was best determined by statistical frequency analysis techniques after the spatial gradients had been derived by least-squares fitting of two-dimensional second-order polynomials to the observations, with the constraint imposed that the solutions be curl-free. The derived response function was found to obey two different causality requirements, and most of the inequality constraints imposed on it (Weidelt, 1972). A preliminary model, in which conductivity is a function of depth only and which explains the major details of the observed response, is presented. It has a highly resistive uppermost layer of some 104 Ωm and of the order of 30 km thick, underlain by a layer of about 125 Ωm to a depth of around 140 km, where a transition takes place to a highly conducting (3 Ωm) half space. The effect of various non-uniform sources on the observations of C(ω, k) for this 1D model is illustrated.
ARK: https://n2t.net/ark:/88439/y091007
Permalink: https://geophysicsjournal.com/article/169
ARK: https://n2t.net/ark:/88439/y091007
Permalink: https://geophysicsjournal.com/article/169
Creator (Dublin Core)
Jones, A.G.
Subject (Dublin Core)
en-US
Magnetometer arrays
en-US
Response function analysis
en-US
Geomagnetic induction studies in Scandinavia
en-US
Data
Publisher (Dublin Core)
en-US
Journal of Geophysics
Date (Dublin Core)
1980-03-27
Type (Dublin Core)
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
en-US
Peer-reviewed Article
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/169
Source (Dublin Core)
en-US
Journal of Geophysics; Vol 48 No 1 (1980): Journal of Geophysics; 181-194
2643-2986
2643-9271
Language (Dublin Core)
eng
Relation (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/169/129