NissirosV1, Main, Exploration, bibRecord, 000167

Recent activity of Nisyros volcano (Greece) inferred from structural, geochemical and seismological data

Identifieur interne : 000167 ( Main/Exploration ); précédent : 000166; suivant : 000168

Recent activity of Nisyros volcano (Greece) inferred from structural, geochemical and seismological data

Auteurs : Stefano Caliro [Italie] ; G. Chiodini [Italie] ; D. Galluzzo [Italie] ; D. Granieri [Italie] ; M. La Rocca [Italie] ; Gilberto Saccorotti [Italie] ; G. Ventura [Italie]

Source :

Bulletin of volcanology [ 0258-8900 ] ; 2005.

RBID : Pascal:05-0205976

Descripteurs français

Pascal (Inist)
- Grèce, Mer Egée, Volcan, Levé, Caldeira, Plaine, Faille, Ligne directionnelle, Filon, Cratère, Tectonique, Anomalie, Sol, Contrôle structural, Dégazage, Energie, Dôme, Eruption, Instrumentation, Séisme, Profondeur, Onde plane, Instabilité, Réservoir, Indicateur géochimique, Phénomène précurseur, Sismicité.
Wicri :
- geographic : Grèce.
- topic : Plaine, Séisme.

English descriptors

KwdEn :
- Aegean Sea, Greece, anomalies, calderas, craters, degassing, depth, domes, earthquakes, energy, eruptions, faults, geochemical indicators, instability, instruments, plains, plane waves, precursors, reservoirs, seismicity, soils, strike, structural controls, surveys, tectonics, veins, volcanoes.

Abstract

This study summarizes the results of structural, geochemical and seismological surveys carried out at Nisyros volcano (Aegean Sea, Greece) during 1999-2001. Field mapping and mesostructural measurements at the summit caldera (Lakki plain) indicate that faults follow two main strikes: NE-SW and N-S. The N-S striking fault depicts extensional features accommodating the left-lateral component of motion of the NE-SW- striking main faults. The NE-SW preferred strike of the Lakki faults and of the mineral-filled veins as well as the distribution and NE-SW elongation of the hydrothermal craters indicate that tectonics plays a major role in controlling the fluid pathway in the Nisyros caldera. The same NE-SW trend is depicted by CO₂ anomalies revealed through detailed soil CO₂ flux surveys, thus indicating a structural control on the pattern of the hydrothermal degassing. Degassing processes account for a thermal energy release of about 43 MW, most of which occurs at Lofos dome, an area that was affected by hydrothermal eruptions in historical times. The seismic study was conducted in June 2001, using a deployment specifically aimed at detecting signals of magmatic-hydrothermal origin. Our instruments recorded local and regional earthquakes, a few local long-period events (LP), and bursts of monochromatic tremor. Local earthquake activity is concentrated beneath the caldera, at depths generally shallower than 6 km. Plane-wave decomposition of tremor signal indicates a shallow (<200 m) source located in the eastern part of the caldera. Conversely, LP events depict a source located beneath the central part of the caldera, in the area of Lofos dome, at depths in the 1-2-km range. In agreement with geochemical and structural measurements, these data suggest that both the deeper and shallower part of the hydrothermal system are subjected to instability in the fluid flow regimes, probably consequent to transient pressurization of the reservoir. These instabilities may be related to input of hot fluids from the deeper magmatic system, as suggested by the variations in geochemical parameters observed after the 1997-1999 unrest episode. The significance of seismological and geochemical indicators as precursors of hydrothermal explosive activity at Nisyros is discussed.

Affiliations:

Italie

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000029
to stream PascalFrancis, to step Curation: 000011
to stream PascalFrancis, to step Checkpoint: 000026
to stream Main, to step Merge: 000168
to stream Main, to step Curation: 000167

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Recent activity of Nisyros volcano (Greece) inferred from structural, geochemical and seismological data</title>
<author><name sortKey="Caliro, Stefano" sort="Caliro, Stefano" uniqKey="Caliro S" first="Stefano" last="Caliro">Stefano Caliro</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Chiodini, G" sort="Chiodini, G" uniqKey="Chiodini G" first="G." last="Chiodini">G. Chiodini</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Galluzzo, D" sort="Galluzzo, D" uniqKey="Galluzzo D" first="D." last="Galluzzo">D. Galluzzo</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Granieri, D" sort="Granieri, D" uniqKey="Granieri D" first="D." last="Granieri">D. Granieri</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="La Rocca, M" sort="La Rocca, M" uniqKey="La Rocca M" first="M." last="La Rocca">M. La Rocca</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Saccorotti, Gilberto" sort="Saccorotti, Gilberto" uniqKey="Saccorotti G" first="Gilberto" last="Saccorotti">Gilberto Saccorotti</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Ventura, G" sort="Ventura, G" uniqKey="Ventura G" first="G." last="Ventura">G. Ventura</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">INIST</idno>
<idno type="inist">05-0205976</idno>
<date when="2005">2005</date>
<idno type="stanalyst">PASCAL 05-0205976 INIST</idno>
<idno type="RBID">Pascal:05-0205976</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">000029</idno>
<idno type="wicri:Area/PascalFrancis/Curation">000011</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">000026</idno>
<idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000026</idno>
<idno type="wicri:doubleKey">0258-8900:2005:Caliro S:recent:activity:of</idno>
<idno type="wicri:Area/Main/Merge">000168</idno>
<idno type="wicri:Area/Main/Curation">000167</idno>
<idno type="wicri:Area/Main/Exploration">000167</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Recent activity of Nisyros volcano (Greece) inferred from structural, geochemical and seismological data</title>
<author><name sortKey="Caliro, Stefano" sort="Caliro, Stefano" uniqKey="Caliro S" first="Stefano" last="Caliro">Stefano Caliro</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Chiodini, G" sort="Chiodini, G" uniqKey="Chiodini G" first="G." last="Chiodini">G. Chiodini</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Galluzzo, D" sort="Galluzzo, D" uniqKey="Galluzzo D" first="D." last="Galluzzo">D. Galluzzo</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Granieri, D" sort="Granieri, D" uniqKey="Granieri D" first="D." last="Granieri">D. Granieri</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="La Rocca, M" sort="La Rocca, M" uniqKey="La Rocca M" first="M." last="La Rocca">M. La Rocca</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Saccorotti, Gilberto" sort="Saccorotti, Gilberto" uniqKey="Saccorotti G" first="Gilberto" last="Saccorotti">Gilberto Saccorotti</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Ventura, G" sort="Ventura, G" uniqKey="Ventura G" first="G." last="Ventura">G. Ventura</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Osservatorio Vesuviano, Istituto Nazionale di Geofisica e Vulcanologia, Via Diocleziano 328</s1>
<s2>80124 Napoli</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>80124 Napoli</wicri:noRegion>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Bulletin of volcanology</title>
<title level="j" type="abbreviated">Bull. volcanol.</title>
<idno type="ISSN">0258-8900</idno>
<imprint><date when="2005">2005</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Bulletin of volcanology</title>
<title level="j" type="abbreviated">Bull. volcanol.</title>
<idno type="ISSN">0258-8900</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aegean Sea</term>
<term>Greece</term>
<term>anomalies</term>
<term>calderas</term>
<term>craters</term>
<term>degassing</term>
<term>depth</term>
<term>domes</term>
<term>earthquakes</term>
<term>energy</term>
<term>eruptions</term>
<term>faults</term>
<term>geochemical indicators</term>
<term>instability</term>
<term>instruments</term>
<term>plains</term>
<term>plane waves</term>
<term>precursors</term>
<term>reservoirs</term>
<term>seismicity</term>
<term>soils</term>
<term>strike</term>
<term>structural controls</term>
<term>surveys</term>
<term>tectonics</term>
<term>veins</term>
<term>volcanoes</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Grèce</term>
<term>Mer Egée</term>
<term>Volcan</term>
<term>Levé</term>
<term>Caldeira</term>
<term>Plaine</term>
<term>Faille</term>
<term>Ligne directionnelle</term>
<term>Filon</term>
<term>Cratère</term>
<term>Tectonique</term>
<term>Anomalie</term>
<term>Sol</term>
<term>Contrôle structural</term>
<term>Dégazage</term>
<term>Energie</term>
<term>Dôme</term>
<term>Eruption</term>
<term>Instrumentation</term>
<term>Séisme</term>
<term>Profondeur</term>
<term>Onde plane</term>
<term>Instabilité</term>
<term>Réservoir</term>
<term>Indicateur géochimique</term>
<term>Phénomène précurseur</term>
<term>Sismicité</term>
</keywords>
<keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Grèce</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Plaine</term>
<term>Séisme</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">This study summarizes the results of structural, geochemical and seismological surveys carried out at Nisyros volcano (Aegean Sea, Greece) during 1999-2001. Field mapping and mesostructural measurements at the summit caldera (Lakki plain) indicate that faults follow two main strikes: NE-SW and N-S. The N-S striking fault depicts extensional features accommodating the left-lateral component of motion of the NE-SW- striking main faults. The NE-SW preferred strike of the Lakki faults and of the mineral-filled veins as well as the distribution and NE-SW elongation of the hydrothermal craters indicate that tectonics plays a major role in controlling the fluid pathway in the Nisyros caldera. The same NE-SW trend is depicted by CO<sub>2</sub>
 anomalies revealed through detailed soil CO<sub>2</sub>
 flux surveys, thus indicating a structural control on the pattern of the hydrothermal degassing. Degassing processes account for a thermal energy release of about 43 MW, most of which occurs at Lofos dome, an area that was affected by hydrothermal eruptions in historical times. The seismic study was conducted in June 2001, using a deployment specifically aimed at detecting signals of magmatic-hydrothermal origin. Our instruments recorded local and regional earthquakes, a few local long-period events (LP), and bursts of monochromatic tremor. Local earthquake activity is concentrated beneath the caldera, at depths generally shallower than 6 km. Plane-wave decomposition of tremor signal indicates a shallow (<200 m) source located in the eastern part of the caldera. Conversely, LP events depict a source located beneath the central part of the caldera, in the area of Lofos dome, at depths in the 1-2-km range. In agreement with geochemical and structural measurements, these data suggest that both the deeper and shallower part of the hydrothermal system are subjected to instability in the fluid flow regimes, probably consequent to transient pressurization of the reservoir. These instabilities may be related to input of hot fluids from the deeper magmatic system, as suggested by the variations in geochemical parameters observed after the 1997-1999 unrest episode. The significance of seismological and geochemical indicators as precursors of hydrothermal explosive activity at Nisyros is discussed.</div>
</front>
</TEI>
<affiliations><list><country><li>Italie</li>
</country>
</list>
<tree><country name="Italie"><noRegion><name sortKey="Caliro, Stefano" sort="Caliro, Stefano" uniqKey="Caliro S" first="Stefano" last="Caliro">Stefano Caliro</name>
</noRegion>
<name sortKey="Chiodini, G" sort="Chiodini, G" uniqKey="Chiodini G" first="G." last="Chiodini">G. Chiodini</name>
<name sortKey="Galluzzo, D" sort="Galluzzo, D" uniqKey="Galluzzo D" first="D." last="Galluzzo">D. Galluzzo</name>
<name sortKey="Granieri, D" sort="Granieri, D" uniqKey="Granieri D" first="D." last="Granieri">D. Granieri</name>
<name sortKey="La Rocca, M" sort="La Rocca, M" uniqKey="La Rocca M" first="M." last="La Rocca">M. La Rocca</name>
<name sortKey="Saccorotti, Gilberto" sort="Saccorotti, Gilberto" uniqKey="Saccorotti G" first="Gilberto" last="Saccorotti">Gilberto Saccorotti</name>
<name sortKey="Ventura, G" sort="Ventura, G" uniqKey="Ventura G" first="G." last="Ventura">G. Ventura</name>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/NissirosV1/Data/Main/Exploration

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000167 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000167 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Terre
   |area=    NissirosV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     Pascal:05-0205976
   |texte=   Recent activity of Nisyros volcano (Greece) inferred from structural, geochemical and seismological data
}}

This area was generated with Dilib version V0.6.33.
Data generation: Tue Jan 16 00:18:27 2018. Site generation: Mon Feb 1 22:09:13 2021

	Serveur d'exploration Nissiros
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration Nissiros

Recent activity of Nisyros volcano (Greece) inferred from structural, geochemical and seismological data

Recent activity of Nisyros volcano (Greece) inferred from structural, geochemical and seismological data

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri