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Browsing by Subject "Jarðskjálftamælingar"
Now showing items 1-16 of 16
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Civil and Environmental Engineering, 2018-11-23)A comprehensive site-effect investigation framework was developed and applied to earthquake strong-motion data collected on small-aperture urban arrays, the ICEARRAY I in Hveragerði in the South Iceland Seismic Zone and ICEARRAY II in Húsavík in the ... -
(Society of Exploration Geophysicists, 1993-07)Cross-borehole tomography suffers from a well-known problem of data incompleteness: the limited ray coverage dictated by the poor experimental geometry implies that certain features of the velocity field are not determined by the data. Construction of ...
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(The Seismological Society of America, 1989)We have completed a comprehensive study of focal mechanisms of digitally recorded earthquakes (M, -_< 4.4) that occurred in the Wasatch front region in Utah during 1980 to 1986. Single-event solutions for 24 events were determined using recently ...
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(The Seismological Society of America, 1999)The mantle electromagnetic and tomography (MELT) experiment on the east Pacific rise near 17°S was the first large teleseismic experiment on a midocean ridge. During the six-month deployment, no compressional arrivals were well recorded above 0.5 ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019-06-28)Iceland is located on the Mid-Atlantic Ridge and is the surface exposure of the ridge system on land. The influence of the plume has been shown to reach towards the south at least as far as the Bight Transform Fault. The ridge system in Iceland has ...
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(American Geophysical Union (AGU), 1996-12-01)P‐to‐S conversions from the two primary discontinuities near 410 and 660 km depth (P410s and P660s phases) are evident in particle motions and receiver functions of teleseismic body waves recorded by broadband seismic stations in Iceland. The average ...
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(Hið íslenzka náttúrufræðifélag, 1954)The seismic activity was relatively low in Iceland during this year. No large shock occurred, and no damage was done by earthquakes. The largest shock came on February 10th, with epicenter off the north coast (about 66°40'N, 17°0'W), origin time l ...
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(Hið íslenzka náttúrufræðifélag, 1959)During this period, three seismograph stations were operated in Iceland, at Reykjavík, Akureyri and Vík. A new seismograph station was erected at Kirkjubæjarklaustur (Síða) in 1958, where one vertical Willmore seismograph is operated. The seismic ...
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(Hið íslenzka náttúrufræðifélag, 1956)The seismograph station at Reykjavik was operated with three short period Sprengnether seismographs during these years. New stations were erected at Akureyri (65°40.3' N, 18°06.0' W) and at Vík (63°25.3' N, 19°01.0' W). At both these stations, one ...
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(IOS Press, 2016-09-13)The changes in the state of a geophysical medium before a strong earthquake can be found by studying of 3D seismic velocity images constructed for consecutive time windows. A preliminary step is to see changes with time in a minimum 1D model. In this ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Civil and Environmental Engineering, 2019-11-25)Shear wave velocity is a fundamental parameter in soil dynamics and geotechnical earthquake engineering. The Multichannel Analysis of Surface Waves (MASW) method is a relatively new non-invasive technique to evaluate the near-surface shear wave velocity ...
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(Conspress, 2022-08-04)The earthquake hazard in Iceland is highest in its two transform zones, the South Iceland Seismic Zone in the South and the Tjörnes Fracture Zone in the North and the reliable probabilistic seismic hazard assessment (PSHA) is the prerequisite for the ...
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(Springer Nature, 1998-09)Iceland, one of the most thoroughly investigated hotspots1,2,3, is generally accepted to be the manifestation of an upwelling mantle plume4. Yet whether the plume originates from the lower mantle or from a convective instability at a thermal boundary ...
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(Frontiers Media SA, 2018-06-19)Since its last effusive eruption in 2002, Nyiragongo has been an open-vent volcano characterized by the world’s largest persistent lava lake. This lava lake provides a unique opportunity to detect pressure change in the magmatic system by analyzing its ...
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(Oxford University Press (OUP), 2004-12)The dynamic and melting processes of a ridge-centred plume have been investigated in a companion paper by Ruedas et al. (hereafter referred to as Paper I) in a set of 3-D numerical fluid dynamic models with varying plume excess temperatures and melt ...
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(2021-06-01)Repeated periods of inflation-deflation in the vicinity of Mt. Þorbjörn-Svartsengi, SW-Iceland, were detected in January–July, 2020. We used seismic ambient noise and interferometry to characterize temporal variations of seismic velocities (dv/v, %). ...
Now showing items 1-16 of 16