Gravity and height variations during the present rifting episode in Northern Iceland
Item
Title (Dublin Core)
en-US
Gravity and height variations during the present rifting episode in Northern Iceland
Description (Dublin Core)
en-US
In 1975, a rifting episode started in the neovolcanic zone of northern Iceland, consisting of a succession of slow inflation periods and rapid subsidence events, which is still going on. The center of activity is situated below the Krafla caldera, and the rifting process is affecting the 80-km-long fissure swarm associated with this central volcano. Gravity and height variations associated with this process have been investigated by re-observing profiles earlier established in the Namafjall and in the Gjastikki area, situated nearly 10 km south and north of Krafla respectively, as well as by the re-observation of a number of gravity stations in the northern part of the fissure zone, in 1976, 1977, and 1978. By repeated observations with 2 or 3 LaCoste-Romberg gravity meters, the accuracy obtained in each gravity survey is of the order of ± 10 x 10-8 ms-2. In the profiles crossing the fissure zones, a rate of gravity increase of more than 100 x 10-8 ms-2/a has been found in the central part, while gravity at the flanks decreases at the same order. These variations are correlated with subsidence and elevation rates of the order of 0.5 m/a.
ARK: https://n2t.net/ark:/88439/y060150
Permalink: https://geophysicsjournal.com/article/268
ARK: https://n2t.net/ark:/88439/y060150
Permalink: https://geophysicsjournal.com/article/268
Creator (Dublin Core)
Torge, W.
Kanngieser, E.
Subject (Dublin Core)
en-US
Icelandic rift zone
en-US
Recent gravity and height variations
en-US
Precise gravity measurements
en-US
Geodesy
Publisher (Dublin Core)
en-US
Journal of Geophysics
Date (Dublin Core)
1980-01-24
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/268
Source (Dublin Core)
en-US
Journal of Geophysics; Vol 47 No 1 (1980): Journal of Geophysics; 125-131
2643-2986
2643-9271
Language (Dublin Core)
eng
Relation (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/268/226