Magnetovariational and magnetotelluric studies of the Oulu anomaly on the Baltic Shield in Finland
Item
Title (Dublin Core)
en-US
Magnetovariational and magnetotelluric studies of the Oulu anomaly on the Baltic Shield in Finland
Description (Dublin Core)
en-US
The electrical conductivity structure of the Baltic Shield in Finland has been studied by magnetovariational (MV) and magnetotelluric (MT) work. First magnetometer arrays revealed the crustal Oulu conductivity anomaly which consists of a crustal conductive zone and a conductivity boundary. Since 1983 the magnetotelluric technique has been used to study the Oulu anomaly in more detail. The information obtained from the induction vectors of the MV and MT data are compared. 1 D and 2D models of the Oulu anomaly were constructed from MT data using induction vectors as additional information. In the centre of the research area the anomalous body (with a resistivity of 0.5 ohm m) lies below a depth of 4-7 km. Its width is about 25 km and its length is more than 100 km. To the south-west of this anomaly a low-resistive crustal layer exists at a depth of 14 km, whereas to the north-east no crustal layer was identified in the very resistive Karelidic realm.
ARK: https://n2t.net/ark:/88439/y097907
Permalink: https://geophysicsjournal.com/article/229
ARK: https://n2t.net/ark:/88439/y097907
Permalink: https://geophysicsjournal.com/article/229
Creator (Dublin Core)
Korja, T.
Zhang, P.
Pajunpaa, K.
Subject (Dublin Core)
en-US
Baltic Shield
en-US
Crustal conductivity structure
en-US
Oulu conductivity anomaly
en-US
Magnetotellurics
en-US
Magnetovariational studies
en-US
Solid Earth
Publisher (Dublin Core)
en-US
Journal of Geophysics
Date (Dublin Core)
1986-02-27
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/229
Source (Dublin Core)
en-US
Journal of Geophysics; Vol 59 No 1 (1986): Journal of Geophysics; 32-41
2643-2986
2643-9271
Language (Dublin Core)
eng
Relation (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/229/189