Ground deformation at Nisyros volcano (Greece) detected by ERS-2 SAR differential interferometry
Identifieur interne : 000186 ( Main/Exploration ); précédent : 000185; suivant : 000187Ground deformation at Nisyros volcano (Greece) detected by ERS-2 SAR differential interferometry
Auteurs : O. Sykioti [Grèce] ; C. C. Kontoes [Grèce] ; P. Elias [Grèce] ; P. Briole [France] ; M. Sachpazi [Royaume-Uni] ; D. Paradissis [Grèce] ; I. Kotsis [Grèce]Source :
- International journal of remote sensing [ 0143-1161 ] ; 2003.
Descripteurs français
- Pascal (Inist)
- Télédétection spatiale, Iles Egée Grèce, Déformation, Volcan, Radar antenne synthétique, Interférométrie, Arc insulaire, Arc volcanique, Eruption, Source ponctuelle, Profondeur, Sismicité, Intrusion, Magma, Migration, Transport, Hypocentre, Ile Nisyros, Interférogramme, Inflation déflation, ERS-2, InSAR.
- Wicri :
- topic : Migration.
English descriptors
- KwdEn :
Abstract
Nisyros is a volcanic island in the south-east of the Aegean volcanic arc. Over the period 1995-1998, the volcano exhibited intense seismic activity without eruption. Production and analysis of satellite radar interferograms, spanning period 1995-2000. showed continuous inflation from 1995 until May 1998 and deflation from mid-1998 to 2000, with the same deformation centre situated at the north-west part of the volcano. Assuming the crust to be an elastic homogenous medium, point source modelling of the deformation field indicates the source of deformation to be located at five kilometres depth beneath the north-west edge of the island. Recorded seismicity trend patterns suggest magma intrusion at depth as the source of the inflation sequence. The recorded migration of hypocentres indicates a probable fluid transport affecting the shallow aquifers resulting in the volcano's deflation.
Affiliations:
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Sykioti</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Space Applications and Remote Sensing, National Observatory of Athens, Metaxa and Vas. Pavlou Str.</s1><s2>Palaia Penteli, 15236</s2><s3>GRC</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Grèce</country><wicri:noRegion>Palaia Penteli, 15236</wicri:noRegion></affiliation></author><author><name sortKey="Kontoes, C C" sort="Kontoes, C C" uniqKey="Kontoes C" first="C. C." last="Kontoes">C. C. Kontoes</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Space Applications and Remote Sensing, National Observatory of Athens, Metaxa and Vas. Pavlou Str.</s1><s2>Palaia Penteli, 15236</s2><s3>GRC</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Grèce</country><wicri:noRegion>Palaia Penteli, 15236</wicri:noRegion></affiliation></author><author><name sortKey="Elias, P" sort="Elias, P" uniqKey="Elias P" first="P." last="Elias">P. 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Kotsis</name><affiliation wicri:level="3"><inist:fA14 i1="04"><s1>National Technical University of Athens, Department of Surveying Engineering, Dionysos Satellite Observatory</s1><s2>Athens</s2><s3>GRC</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Grèce</country><placeName><settlement type="city">Athènes</settlement><region nuts="2" type="region">Attique (région)</region></placeName></affiliation></author></analytic><series><title level="j" type="main">International journal of remote sensing</title><title level="j" type="abbreviated">Int. j. remote sens.</title><idno type="ISSN">0143-1161</idno><imprint><date when="2003">2003</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">International journal of remote sensing</title><title level="j" type="abbreviated">Int. j. remote sens.</title><idno type="ISSN">0143-1161</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Greek Aegean Islands</term><term>Space remote sensing</term><term>deformation</term><term>depth</term><term>eruptions</term><term>hypocenter</term><term>interferometry</term><term>intrusions</term><term>island arcs</term><term>magmas</term><term>migration</term><term>point sources</term><term>seismicity</term><term>synthetic aperture radar</term><term>transport</term><term>volcanic arcs</term><term>volcanoes</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Télédétection spatiale</term><term>Iles Egée Grèce</term><term>Déformation</term><term>Volcan</term><term>Radar antenne synthétique</term><term>Interférométrie</term><term>Arc insulaire</term><term>Arc volcanique</term><term>Eruption</term><term>Source ponctuelle</term><term>Profondeur</term><term>Sismicité</term><term>Intrusion</term><term>Magma</term><term>Migration</term><term>Transport</term><term>Hypocentre</term><term>Ile Nisyros</term><term>Interférogramme</term><term>Inflation déflation</term><term>ERS-2</term><term>InSAR</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Migration</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Nisyros is a volcanic island in the south-east of the Aegean volcanic arc. Over the period 1995-1998, the volcano exhibited intense seismic activity without eruption. Production and analysis of satellite radar interferograms, spanning period 1995-2000. showed continuous inflation from 1995 until May 1998 and deflation from mid-1998 to 2000, with the same deformation centre situated at the north-west part of the volcano. Assuming the crust to be an elastic homogenous medium, point source modelling of the deformation field indicates the source of deformation to be located at five kilometres depth beneath the north-west edge of the island. Recorded seismicity trend patterns suggest magma intrusion at depth as the source of the inflation sequence. The recorded migration of hypocentres indicates a probable fluid transport affecting the shallow aquifers resulting in the volcano's deflation.</div></front></TEI><affiliations><list><country><li>France</li><li>Grèce</li><li>Royaume-Uni</li></country><region><li>Attique (région)</li><li>Île-de-France</li></region><settlement><li>Athènes</li><li>Paris</li></settlement></list><tree><country name="Grèce"><noRegion><name sortKey="Sykioti, O" sort="Sykioti, O" uniqKey="Sykioti O" first="O." last="Sykioti">O. Sykioti</name></noRegion><name sortKey="Elias, P" sort="Elias, P" uniqKey="Elias P" first="P." last="Elias">P. Elias</name><name sortKey="Kontoes, C C" sort="Kontoes, C C" uniqKey="Kontoes C" first="C. C." last="Kontoes">C. C. Kontoes</name><name sortKey="Kotsis, I" sort="Kotsis, I" uniqKey="Kotsis I" first="I." last="Kotsis">I. Kotsis</name><name sortKey="Paradissis, D" sort="Paradissis, D" uniqKey="Paradissis D" first="D." last="Paradissis">D. Paradissis</name></country><country name="France"><region name="Île-de-France"><name sortKey="Briole, P" sort="Briole, P" uniqKey="Briole P" first="P." last="Briole">P. Briole</name></region></country><country name="Royaume-Uni"><noRegion><name sortKey="Sachpazi, M" sort="Sachpazi, M" uniqKey="Sachpazi M" first="M." last="Sachpazi">M. Sachpazi</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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