A two-dimensional magnetometer array for ground-based observations of auroral zone electric currents during the International Magnetospheric Study (IMS)
Item
Title (Dublin Core)
en-US
A two-dimensional magnetometer array for ground-based observations of auroral zone electric currents during the International Magnetospheric Study (IMS)
Description (Dublin Core)
en-US
A two-dimensional magnetometer array was progressively installed in Scandinavia, from 1974 onwards, for operation during the IMS period (1977-1979). The 36 instruments, which are buried in the ground, are of the Gough-Reitzel type, i.e., classical magnetometers, with wire-suspended magnets and optical recording. The time-variation period range observable is from about 50 s to several days. In northern Scandinavia, the spacing between the stations is about 100-150 km in both the north-south and east-west directions. For presentation and analysis of the data a special Cartesian coordinate system has been introduced (the 'Kiruna system'). It is derived by mapping the local Earth's surface onto a tangential plane, with its origin close to Kiruna (geographic coordinates 67.8 N, 20.5 E). First results from some stations show that internal contributions to the recorded horizontal geomagnetic variations are small and possibly negligible at lower frequencies. However, at frequencies above about 2 mHz the variations of the vertical component display a strong amplification near the coast, and indicate the existence of conductivity anomalies at some inland locations. In order to demonstrate the observational capabilities of the array, equivalent overhead current configurations are presented which characterize a substorm recorded on October 7, 1976.
ARK: https://n2t.net/ark:/88439/y001456
Permalink: https://geophysicsjournal.com/article/160
ARK: https://n2t.net/ark:/88439/y001456
Permalink: https://geophysicsjournal.com/article/160
Creator (Dublin Core)
Kuppers, F.
Untiedt, J.
Baumjohann, W.
Lange, K.
Jones, A.G.
Subject (Dublin Core)
en-US
Magnetometer arrays
en-US
Auroral zone
en-US
Electric current systems
en-US
International Magnetospheric Study
en-US
Atmosphere
Publisher (Dublin Core)
en-US
Journal of Geophysics
Date (Dublin Core)
1979-04-26
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/160
Source (Dublin Core)
en-US
Journal of Geophysics; Vol 46 No 1 (1979): Journal of Geophysics; 429-450
2643-2986
2643-9271
Language (Dublin Core)
eng
Relation (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/160/120