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Seismological and SAR signature of unrest at Nisyros caldera, Greece

Identifieur interne : 000038 ( PascalFrancis/Corpus ); précédent : 000037; suivant : 000039

Seismological and SAR signature of unrest at Nisyros caldera, Greece

Auteurs : M. Sachpazi ; Ch. Kontoes ; N. Voulgaris ; M. Laigle ; G. Vougioukalakis ; Olga Sikioti ; G. Stavrakakis ; J. Baskoutas ; J. Kalogeras ; J. Cl. Lepine

Source :

RBID : Pascal:02-0464838

Descripteurs français

English descriptors

Abstract

Nisyros island, a Quaternary volcanic center located at the SE of the Aegean Volcanic Arc, has been in the past characterized by periods of intense seismic activity accompanied sometimes by hydrothermal explosions, the last one being in 1887. The recent long lasting episode of unrest (1995-1998) in the area is the first instrumentally documented providing information on the behavior of the volcano. Evidence from seismicity and SAR interferometry suggests that the presently active part of the Kos-Nisyros volcano-tectonic complex is located at the NW coast of Nisyros island defining an area much smaller than the whole volcano-tectonic area. Seismicity patterns vary both temporally and spatially consistently with different rates of vertical ground deformation inferred from SAR interferometry. These observations help us to discuss the different elements controlling the behavior of the volcanic system such as: the existence, location and timing of magma chamber inflation, the occurrence of tensile failure at the boundaries of the chamber and the possibility of magmatic fluids being expelled to form a shallow magmatic intrusion, the seismic failure and migration of hypocenters indicating shallow magma transport.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A06       @2 1-2
A08 01  1  ENG  @1 Seismological and SAR signature of unrest at Nisyros caldera, Greece
A11 01  1    @1 SACHPAZI (M.)
A11 02  1    @1 KONTOES (Ch.)
A11 03  1    @1 VOULGARIS (N.)
A11 04  1    @1 LAIGLE (M.)
A11 05  1    @1 VOUGIOUKALAKIS (G.)
A11 06  1    @1 SIKIOTI (Olga)
A11 07  1    @1 STAVRAKAKIS (G.)
A11 08  1    @1 BASKOUTAS (J.)
A11 09  1    @1 KALOGERAS (J.)
A11 10  1    @1 LEPINE (J. Cl.)
A14 01      @1 National Observatory of Athens, Lofos Nymfon @2 Athens @3 GRC @Z 1 aut. @Z 2 aut. @Z 6 aut. @Z 7 aut. @Z 8 aut. @Z 9 aut.
A14 02      @1 Department of Geology and Geothermy, Panepistimioupoli @2 Athens @3 GRC @Z 3 aut.
A14 03      @1 Laboratoire de Sismologie, Experimentale, Institut de Physique du Globe, 4 place Jussieu @2 75252 Paris @3 FRA @Z 4 aut. @Z 10 aut.
A14 04      @1 Institute of Geological and Mineral Exploration, Mesogion 70 @2 Athens @3 GRC @Z 5 aut.
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C01 01    ENG  @0 Nisyros island, a Quaternary volcanic center located at the SE of the Aegean Volcanic Arc, has been in the past characterized by periods of intense seismic activity accompanied sometimes by hydrothermal explosions, the last one being in 1887. The recent long lasting episode of unrest (1995-1998) in the area is the first instrumentally documented providing information on the behavior of the volcano. Evidence from seismicity and SAR interferometry suggests that the presently active part of the Kos-Nisyros volcano-tectonic complex is located at the NW coast of Nisyros island defining an area much smaller than the whole volcano-tectonic area. Seismicity patterns vary both temporally and spatially consistently with different rates of vertical ground deformation inferred from SAR interferometry. These observations help us to discuss the different elements controlling the behavior of the volcanic system such as: the existence, location and timing of magma chamber inflation, the occurrence of tensile failure at the boundaries of the chamber and the possibility of magmatic fluids being expelled to form a shallow magmatic intrusion, the seismic failure and migration of hypocenters indicating shallow magma transport.
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C03 01  2  ENG  @0 Hellenides @2 NG @5 01
C03 02  2  FRE  @0 Iles Egée Grèce @2 NG @5 02
C03 02  2  ENG  @0 Greek Aegean Islands @2 NG @5 02
C03 02  2  SPA  @0 Islas Egeas Griegas @2 NG @5 02
C03 03  2  FRE  @0 Sismologie @5 03
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C03 07  2  SPA  @0 Caldera @5 07
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C03 09  2  SPA  @0 Actividad @5 11
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C03 20  2  FRE  @0 Ile Nisyros @4 INC @5 55
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C03 21  2  ENG  @0 hypocenter @5 61
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Format Inist (serveur)

NO : PASCAL 02-0464838 INIST
ET : Seismological and SAR signature of unrest at Nisyros caldera, Greece
AU : SACHPAZI (M.); KONTOES (Ch.); VOULGARIS (N.); LAIGLE (M.); VOUGIOUKALAKIS (G.); SIKIOTI (Olga); STAVRAKAKIS (G.); BASKOUTAS (J.); KALOGERAS (J.); LEPINE (J. Cl.)
AF : National Observatory of Athens, Lofos Nymfon/Athens/Grèce (1 aut., 2 aut., 6 aut., 7 aut., 8 aut., 9 aut.); Department of Geology and Geothermy, Panepistimioupoli/Athens/Grèce (3 aut.); Laboratoire de Sismologie, Experimentale, Institut de Physique du Globe, 4 place Jussieu/75252 Paris/France (4 aut., 10 aut.); Institute of Geological and Mineral Exploration, Mesogion 70/Athens/Grèce (5 aut.)
DT : Publication en série; Papier de recherche; Niveau analytique
SO : Journal of volcanology and geothermal research; ISSN 0377-0273; Coden JVGRDQ; Pays-Bas; Da. 2002; Vol. 116; No. 1-2; Pp. 19-33; Bibl. 1 p.1/4
LA : Anglais
EA : Nisyros island, a Quaternary volcanic center located at the SE of the Aegean Volcanic Arc, has been in the past characterized by periods of intense seismic activity accompanied sometimes by hydrothermal explosions, the last one being in 1887. The recent long lasting episode of unrest (1995-1998) in the area is the first instrumentally documented providing information on the behavior of the volcano. Evidence from seismicity and SAR interferometry suggests that the presently active part of the Kos-Nisyros volcano-tectonic complex is located at the NW coast of Nisyros island defining an area much smaller than the whole volcano-tectonic area. Seismicity patterns vary both temporally and spatially consistently with different rates of vertical ground deformation inferred from SAR interferometry. These observations help us to discuss the different elements controlling the behavior of the volcanic system such as: the existence, location and timing of magma chamber inflation, the occurrence of tensile failure at the boundaries of the chamber and the possibility of magmatic fluids being expelled to form a shallow magmatic intrusion, the seismic failure and migration of hypocenters indicating shallow magma transport.
CC : 222A01; 225B03; 001E01F01; 001E01M03
FD : Hellénides; Iles Egée Grèce; Sismologie; Arc volcanique; Télédétection spatiale; Radar antenne synthétique; Caldeira; Quaternaire; Activité; Explosion; Comportement; Volcan; Sismicité; Interférométrie; Déformation; Chambre magmatique; Perspective; Intrusion; ERS-2; Ile Nisyros; Hypocentre; Migration; Magma; Transport
FG : Grèce; Europe Sud; Europe; Cénozoïque; Phanérozoïque
ED : Hellenides; Greek Aegean Islands; seismology; volcanic arcs; Space remote sensing; synthetic aperture radar; calderas; Quaternary; activity; explosions; behavior; volcanoes; seismicity; interferometry; deformation; magma chambers; possibilities; intrusions; hypocenter; migration; magmas; transport
EG : Greece; Southern Europe; Europe; Cenozoic; Phanerozoic
SD : Islas Egeas Griegas; Teledetección espacial; Caldera; Cuaternario; Actividad; Explosión; Volcán; Sismicidad; Interferometría; Cámara magmática; Perspectiva; Intrusión; Hipocentro; Migración; Magma; Transporte
LO : INIST-17236.354000104353950020
ID : 02-0464838

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Pascal:02-0464838

Le document en format XML

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<author>
<name sortKey="Lepine, J Cl" sort="Lepine, J Cl" uniqKey="Lepine J" first="J. Cl." last="Lepine">J. Cl. Lepine</name>
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<s1>Laboratoire de Sismologie, Experimentale, Institut de Physique du Globe, 4 place Jussieu</s1>
<s2>75252 Paris</s2>
<s3>FRA</s3>
<sZ>4 aut.</sZ>
<sZ>10 aut.</sZ>
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</author>
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<series>
<title level="j" type="main">Journal of volcanology and geothermal research</title>
<title level="j" type="abbreviated">J. volcanol. geotherm. res.</title>
<idno type="ISSN">0377-0273</idno>
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<term>Greek Aegean Islands</term>
<term>Hellenides</term>
<term>Quaternary</term>
<term>Space remote sensing</term>
<term>activity</term>
<term>behavior</term>
<term>calderas</term>
<term>deformation</term>
<term>explosions</term>
<term>hypocenter</term>
<term>interferometry</term>
<term>intrusions</term>
<term>magma chambers</term>
<term>magmas</term>
<term>migration</term>
<term>possibilities</term>
<term>seismicity</term>
<term>seismology</term>
<term>synthetic aperture radar</term>
<term>transport</term>
<term>volcanic arcs</term>
<term>volcanoes</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Hellénides</term>
<term>Iles Egée Grèce</term>
<term>Sismologie</term>
<term>Arc volcanique</term>
<term>Télédétection spatiale</term>
<term>Radar antenne synthétique</term>
<term>Caldeira</term>
<term>Quaternaire</term>
<term>Activité</term>
<term>Explosion</term>
<term>Comportement</term>
<term>Volcan</term>
<term>Sismicité</term>
<term>Interférométrie</term>
<term>Déformation</term>
<term>Chambre magmatique</term>
<term>Perspective</term>
<term>Intrusion</term>
<term>ERS-2</term>
<term>Ile Nisyros</term>
<term>Hypocentre</term>
<term>Migration</term>
<term>Magma</term>
<term>Transport</term>
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<front>
<div type="abstract" xml:lang="en">Nisyros island, a Quaternary volcanic center located at the SE of the Aegean Volcanic Arc, has been in the past characterized by periods of intense seismic activity accompanied sometimes by hydrothermal explosions, the last one being in 1887. The recent long lasting episode of unrest (1995-1998) in the area is the first instrumentally documented providing information on the behavior of the volcano. Evidence from seismicity and SAR interferometry suggests that the presently active part of the Kos-Nisyros volcano-tectonic complex is located at the NW coast of Nisyros island defining an area much smaller than the whole volcano-tectonic area. Seismicity patterns vary both temporally and spatially consistently with different rates of vertical ground deformation inferred from SAR interferometry. These observations help us to discuss the different elements controlling the behavior of the volcanic system such as: the existence, location and timing of magma chamber inflation, the occurrence of tensile failure at the boundaries of the chamber and the possibility of magmatic fluids being expelled to form a shallow magmatic intrusion, the seismic failure and migration of hypocenters indicating shallow magma transport.</div>
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<s1>Seismological and SAR signature of unrest at Nisyros caldera, Greece</s1>
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<s0>Nisyros island, a Quaternary volcanic center located at the SE of the Aegean Volcanic Arc, has been in the past characterized by periods of intense seismic activity accompanied sometimes by hydrothermal explosions, the last one being in 1887. The recent long lasting episode of unrest (1995-1998) in the area is the first instrumentally documented providing information on the behavior of the volcano. Evidence from seismicity and SAR interferometry suggests that the presently active part of the Kos-Nisyros volcano-tectonic complex is located at the NW coast of Nisyros island defining an area much smaller than the whole volcano-tectonic area. Seismicity patterns vary both temporally and spatially consistently with different rates of vertical ground deformation inferred from SAR interferometry. These observations help us to discuss the different elements controlling the behavior of the volcanic system such as: the existence, location and timing of magma chamber inflation, the occurrence of tensile failure at the boundaries of the chamber and the possibility of magmatic fluids being expelled to form a shallow magmatic intrusion, the seismic failure and migration of hypocenters indicating shallow magma transport.</s0>
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<s5>53</s5>
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<s0>Ile Nisyros</s0>
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<s5>64</s5>
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<s5>64</s5>
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<s0>Europe</s0>
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<s0>Europe</s0>
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<s0>Europa</s0>
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<s2>NX</s2>
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<s2>NX</s2>
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<s2>NX</s2>
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<s0>Phanérozoïque</s0>
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<s0>Phanerozoic</s0>
</fC07>
<fC07 i1="05" i2="2" l="SPA">
<s0>Fanerozoico</s0>
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<NO>PASCAL 02-0464838 INIST</NO>
<ET>Seismological and SAR signature of unrest at Nisyros caldera, Greece</ET>
<AU>SACHPAZI (M.); KONTOES (Ch.); VOULGARIS (N.); LAIGLE (M.); VOUGIOUKALAKIS (G.); SIKIOTI (Olga); STAVRAKAKIS (G.); BASKOUTAS (J.); KALOGERAS (J.); LEPINE (J. Cl.)</AU>
<AF>National Observatory of Athens, Lofos Nymfon/Athens/Grèce (1 aut., 2 aut., 6 aut., 7 aut., 8 aut., 9 aut.); Department of Geology and Geothermy, Panepistimioupoli/Athens/Grèce (3 aut.); Laboratoire de Sismologie, Experimentale, Institut de Physique du Globe, 4 place Jussieu/75252 Paris/France (4 aut., 10 aut.); Institute of Geological and Mineral Exploration, Mesogion 70/Athens/Grèce (5 aut.)</AF>
<DT>Publication en série; Papier de recherche; Niveau analytique</DT>
<SO>Journal of volcanology and geothermal research; ISSN 0377-0273; Coden JVGRDQ; Pays-Bas; Da. 2002; Vol. 116; No. 1-2; Pp. 19-33; Bibl. 1 p.1/4</SO>
<LA>Anglais</LA>
<EA>Nisyros island, a Quaternary volcanic center located at the SE of the Aegean Volcanic Arc, has been in the past characterized by periods of intense seismic activity accompanied sometimes by hydrothermal explosions, the last one being in 1887. The recent long lasting episode of unrest (1995-1998) in the area is the first instrumentally documented providing information on the behavior of the volcano. Evidence from seismicity and SAR interferometry suggests that the presently active part of the Kos-Nisyros volcano-tectonic complex is located at the NW coast of Nisyros island defining an area much smaller than the whole volcano-tectonic area. Seismicity patterns vary both temporally and spatially consistently with different rates of vertical ground deformation inferred from SAR interferometry. These observations help us to discuss the different elements controlling the behavior of the volcanic system such as: the existence, location and timing of magma chamber inflation, the occurrence of tensile failure at the boundaries of the chamber and the possibility of magmatic fluids being expelled to form a shallow magmatic intrusion, the seismic failure and migration of hypocenters indicating shallow magma transport.</EA>
<CC>222A01; 225B03; 001E01F01; 001E01M03</CC>
<FD>Hellénides; Iles Egée Grèce; Sismologie; Arc volcanique; Télédétection spatiale; Radar antenne synthétique; Caldeira; Quaternaire; Activité; Explosion; Comportement; Volcan; Sismicité; Interférométrie; Déformation; Chambre magmatique; Perspective; Intrusion; ERS-2; Ile Nisyros; Hypocentre; Migration; Magma; Transport</FD>
<FG>Grèce; Europe Sud; Europe; Cénozoïque; Phanérozoïque</FG>
<ED>Hellenides; Greek Aegean Islands; seismology; volcanic arcs; Space remote sensing; synthetic aperture radar; calderas; Quaternary; activity; explosions; behavior; volcanoes; seismicity; interferometry; deformation; magma chambers; possibilities; intrusions; hypocenter; migration; magmas; transport</ED>
<EG>Greece; Southern Europe; Europe; Cenozoic; Phanerozoic</EG>
<SD>Islas Egeas Griegas; Teledetección espacial; Caldera; Cuaternario; Actividad; Explosión; Volcán; Sismicidad; Interferometría; Cámara magmática; Perspectiva; Intrusión; Hipocentro; Migración; Magma; Transporte</SD>
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