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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004324naa a2200529 4500
001oai:DiVA.org:uu-189149
003SwePub
008121225s2012 | |||||||||||000 ||eng|
009oai:gup.ub.gu.se/169108
009oai:DiVA.org:uu-237811
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1891492 URI
0247 a https://doi.org/10.1029/2012JB0094002 DOI
0247 a https://gup.ub.gu.se/publication/1691082 URI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2378112 URI
040 a (SwePub)uud (SwePub)gu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Geirsson, Halldoru PennState University, USA4 aut
2451 0a Volcano deformation at active plate boundaries :b Deep magma accumulation at Hekla volcano and plate boundary deformation in south Iceland
264 1c 2012
338 a print2 rdacarrier
520 a Most magmatic systems on Earth are located at actively deforming plate boundaries. In these systems, the magmatic and plate boundary deformation signals are intertwined and must be deconvolved to properly estimate magma flux and source characteristics of the magma plumbing system. We investigate the inter-rifting and inter-seismic deformation signals at the Eastern Volcanic Zone (EVZ) - South Iceland Seismic Zone (SISZ) ridge - transform intersection and estimate the location, depth, and volume rate for magmatic sources at Hekla and Torfajokull volcanoes, which are located at the intersection. We solve simultaneously for the source parameters of the tectonic and volcanic deformation signals using a new ten-year velocity field derived from a dense network of episodic and continuous GPS stations in south Iceland. We find the intersection of the axes of the EVZ and the SISZ is located within the Torfajokull caldera, which itself is subsiding. Deformation at Hekla is statistically best described in terms of a horizontal ellipsoidal magma chamber at 24(2)(+4) km depth aligned with the volcanic system and increasing in volume by 0.017(-0.002)(+0.007) km(3) per year. A spherical magma chamber centered at 24(-2)(+5) km depth with a volume rate of 0.019(-0.002)(+0.011) km(3) per year, or a vertical pipe-shaped magma chamber between 10(-1)(+3) km and 21(-4)(+7) km with a volume rate of 0.008(-0.001)(+0.003) km(3) per year are also plausible models explaining the deformation at Hekla. All three models indicate magma accumulation in the lower crust or near the Moho under Hekla.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskap0 (SwePub)1052 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciences0 (SwePub)1052 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geofysik0 (SwePub)105052 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geophysics0 (SwePub)105052 hsv//eng
653 a Geophysics with specialization in Seismology
7001 a LaFemina, Peteru PennState University, USA4 aut
7001 a Arnadottir, Thorau University of Iceland4 aut
7001 a Sturkell, Erik,d 1962u Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences4 aut0 (Swepub:gu)xstuer
7001 a Sigmundsson, Freysteinnu University of Iceland4 aut
7001 a Travis, Matthew4 aut
7001 a Schmidt, Peteru Uppsala universitet,Geofysik4 aut0 (Swepub:uu)petsc436
7001 a Lund, Björnu Uppsala universitet,Geofysik,Seismology4 aut0 (Swepub:uu)bjorlund
7001 a Hreinsdottir, Sigrunu University of Iceland4 aut
7001 a Bennett, Ricku University of Arizona4 aut
7001 a Arnadottir, Th.4 aut
7001 a Travis, Marku PennState University, USA4 aut
7102 a PennState University, USAb University of Iceland4 org
7730 t Journal of Geophysical Researchg 117:B11409q 117<B11409-x 0148-0227x 2156-2202
7730 t Journal of Geophysical Research - Solid Earthg 117:B11409q 117:B11409x 2169-9313x 2169-9356
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-189149
8564 8u https://doi.org/10.1029/2012JB009400
8564 8u https://gup.ub.gu.se/publication/169108
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-237811

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