Journal ArticleDOI
Earthquakes and present-day tectonism in Iceland
TLDR
In this article, it is argued that the South Iceland Seismic Zone is a transient feature, migrating sideways in response to propagation of the Eastern Volcanic Zone. But the authors do not consider the impact of the seismic and volcanic zones on the seafloor.About:
This article is published in Tectonophysics.The article was published on 1991-04-10. It has received 454 citations till now. The article focuses on the topics: Fracture zone & Magma chamber.read more
Citations
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Journal ArticleDOI
Post-earthquake ground movements correlated to pore-pressure transients
TL;DR: A unique combination of measurements consisting of satellite radar interferograms and water-level changes in geothermal wells following two magnitude-6.5 earthquakes in the south Iceland seismic zone shows deformation recorded in the interferogram cannot be explained by either afterslip or visco-elastic relaxation, but is consistent with rebound of a porous elastic material in the first 1–2 months following the earthquakes.
Journal ArticleDOI
The GSHAP Global Seismic Hazard Map
TL;DR: The Global Seismic Hazard Assessment Program (GSHAP) as discussed by the authors is a demonstration project of the UN/International Decade of Natural Disaster Reduction (NDR) which was conducted in the 1992-1998 period with the goal of improving global standards in seismic hazard assessment.
Journal ArticleDOI
Geothermal systems in Iceland: Structure and conceptual models—I. High-temperature areas
TL;DR: There are 20 known high-temperature geothermal areas in Iceland and another eight potential areas as mentioned in this paper, however, surface manifestations are meagre in these eight areas and not conclusive, and no drilling has been carried out to prove or disprove the existence of high temperature geothermal systems at depth.
Journal ArticleDOI
Processes controlling the distribution of boron and chlorine in natural waters in Iceland
TL;DR: The concentrations of B and Cl in natural waters in Iceland lie in the range 0.001-10 and 1.20,000 ppm, respectively as mentioned in this paper, with the highest Cl concentrations in high-temperature waters on the Reykjanes Peninsula and highest B concentrations in well waters from high temperature geothermal systems in the axial zones of the active volcanic belts.
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Rift relocation — A geochemical and geochronological investigation of a palaeo-rift in northwest Iceland
TL;DR: In this paper, the authors present major and trace-element analyses, Sr, Nd and Pb isotope data, and 40Ar/39Ar dates on basalt samples from above and below the unconformity in northwest Iceland.
References
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Journal ArticleDOI
Mechanism of earthquakes and nature of faulting on the mid-oceanic ridges
TL;DR: In this article, the authors investigated the mechanisms of 17 earthquakes on the mid-oceanic ridges and their continental extensions using data from the World Wide Standardized Seismograph Network of the U. S. Coast and Geodetic Survey and from other long-period seismograph instruments.
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Evolution of the Axial Rifting Zone in Northern Iceland and the Tjörnes Fracture Zone
TL;DR: The Tjornes fracture zone as mentioned in this paper is composed of several subsiding troughs and volcanic chains having a north trend and thus differing structurally from the undivided axial rifting zone in northern Iceland.
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Gas release rates from pyroclastic flows: a assessment of the role of fluidisation in their emplacement
TL;DR: In this article, the rates of release of dissolved water from the particles in a pyroclastic flow by diffusion are estimated for flows of thickness 1 to 20 m, which experimental studies demonstrate are the velocities required to fluidise fine to medium ash.
ReportDOI
Seismological evidence for Lateral magma intrusion during the July 1978 deflation of the Krafla volcano in NE-Iceland
TL;DR: In this paper, a dyke tip propagated with the velocity of 0.4-0.5 m/sec during the first 9 hours, but the velocity decreased as the length of the dyke increased.