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Geochemical indicators of possible ongoing volcanic unrest at Nisyros Island (Greece)

Identifieur interne : 000036 ( PascalFrancis/Corpus ); précédent : 000035; suivant : 000037

Geochemical indicators of possible ongoing volcanic unrest at Nisyros Island (Greece)

Auteurs : Giovanni Chiodini ; Tatjana Brombach ; Stefano Caliro ; Carlo Cardellini ; Luigi Marini ; Volker Dietrich

Source :

RBID : Pascal:03-0063631

Descripteurs français

English descriptors

Abstract

Significant changes occurred in the chemistry of gases discharged from Nisyros fumaroles in the years, 1997-2001, following a strong seismic crisis. Increasing H2S/CO2 ratios and decreasing CH4/CO2 ratios are attributed to an increased contribution of magmatic fluids to the hydrothermal system. Some fumaroles showed concurrent increases in H2 and CO contents implying increases in temperature and pressure in the upper parts of the hydrothermal system. These changes reinforce the possibility of an increased hazard of hydrothermal eruptions at present with respect to the '90's. Moreover, both the present events and the historical hydrothermal eruptions may represent precursory signals of a new period of volcanic unrest at Nisyros.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

pA  
A01 01  1    @0 0094-8276
A02 01      @0 GPRLAJ
A03   1    @0 Geophys. res. lett.
A05       @2 29
A06       @2 16
A08 01  1  ENG  @1 Geochemical indicators of possible ongoing volcanic unrest at Nisyros Island (Greece)
A11 01  1    @1 CHIODINI (Giovanni)
A11 02  1    @1 BROMBACH (Tatjana)
A11 03  1    @1 CALIRO (Stefano)
A11 04  1    @1 CARDELLINI (Carlo)
A11 05  1    @1 MARINI (Luigi)
A11 06  1    @1 DIETRICH (Volker)
A14 01      @1 Osservatorio Vesuviano INGV @2 Napoli @3 ITA @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 4 aut.
A14 02      @1 Dip.Te.Ris., University di Geneva @3 ITA @Z 5 aut.
A14 03      @1 Institute of Mineralogy and Petrography, ETH-Zürich @3 CHE @Z 6 aut.
A20       @2 6.1-5.4
A21       @1 2002
A23 01      @0 ENG
A43 01      @1 INIST @2 16687 @5 354000105605150060
A44       @0 0000 @1 © 2003 INIST-CNRS. All rights reserved.
A45       @0 17 ref.
A47 01  1    @0 03-0063631
A60       @1 P
A61       @0 A
A64 01  1    @0 Geophysical research letters
A66 01      @0 USA
C01 01    ENG  @0 Significant changes occurred in the chemistry of gases discharged from Nisyros fumaroles in the years, 1997-2001, following a strong seismic crisis. Increasing H2S/CO2 ratios and decreasing CH4/CO2 ratios are attributed to an increased contribution of magmatic fluids to the hydrothermal system. Some fumaroles showed concurrent increases in H2 and CO contents implying increases in temperature and pressure in the upper parts of the hydrothermal system. These changes reinforce the possibility of an increased hazard of hydrothermal eruptions at present with respect to the '90's. Moreover, both the present events and the historical hydrothermal eruptions may represent precursory signals of a new period of volcanic unrest at Nisyros.
C02 01  2    @0 222A01
C02 02  2    @0 220B03
C02 03  X    @0 001E01F01
C02 04  X    @0 001E01B03
C03 01  2  FRE  @0 Iles Egée Grèce @2 NG @5 01
C03 01  2  ENG  @0 Greek Aegean Islands @2 NG @5 01
C03 01  2  SPA  @0 Islas Egeas Griegas @2 NG @5 01
C03 02  2  FRE  @0 Gaz @5 02
C03 02  2  ENG  @0 gases @5 02
C03 02  2  SPA  @0 Gas @5 02
C03 03  2  FRE  @0 Volcanisme @5 03
C03 03  2  ENG  @0 volcanism @5 03
C03 04  2  FRE  @0 Analyse chimique @5 04
C03 04  2  ENG  @0 chemical analysis @5 04
C03 04  2  SPA  @0 Análisis químico @5 04
C03 05  2  FRE  @0 Fumerolle @5 05
C03 05  2  ENG  @0 fumaroles @5 05
C03 05  2  SPA  @0 Fumarola @5 05
C03 06  2  FRE  @0 Dioxyde carbone @5 06
C03 06  2  ENG  @0 carbon dioxide @5 06
C03 07  2  FRE  @0 Gaz hydrogène sulfuré @5 07
C03 07  2  ENG  @0 hydrogen sulfide gas @5 07
C03 07  2  SPA  @0 Gas sulfhídrico @5 07
C03 08  2  FRE  @0 Rapport chimique @5 08
C03 08  2  ENG  @0 chemical ratios @5 08
C03 08  2  SPA  @0 Relación química @5 08
C03 09  2  FRE  @0 Méthane @5 09
C03 09  2  ENG  @0 methane @5 09
C03 09  2  SPA  @0 Metano @5 09
C03 10  2  FRE  @0 Activité hydrothermale @5 10
C03 10  2  ENG  @0 hydrothermal activity @5 10
C03 11  2  FRE  @0 Hydrogène @5 11
C03 11  2  ENG  @0 hydrogen @5 11
C03 11  2  SPA  @0 Hidrógeno @5 11
C03 12  2  FRE  @0 Monoxyde carbone @5 12
C03 12  2  ENG  @0 carbon monoxide @5 12
C03 13  2  FRE  @0 Condition pression température @5 13
C03 13  2  ENG  @0 P-T conditions @5 13
C03 13  2  SPA  @0 Condición PT @5 13
C03 14  2  FRE  @0 Risque volcanique @5 14
C03 14  2  ENG  @0 volcanic risk @5 14
C03 15  2  FRE  @0 Eruption @5 15
C03 15  2  ENG  @0 eruptions @5 15
C03 15  2  SPA  @0 Erupción @5 15
C03 16  2  FRE  @0 Phénomène précurseur @5 16
C03 16  2  ENG  @0 precursors @5 16
C03 16  2  SPA  @0 Fenómeno precursor @5 16
C03 17  2  FRE  @0 Ile Nisyros @4 INC @5 52
C03 18  2  FRE  @0 Gaz volcanique @4 INC @5 53
C03 19  2  FRE  @0 Fluide magmatique @4 INC @5 54
C03 20  2  FRE  @0 Système hydrothermal @4 INC @5 55
C06       @0 ILS
C07 01  2  FRE  @0 Grèce @2 NG
C07 01  2  ENG  @0 Greece @2 NG
C07 01  2  SPA  @0 Grecia @2 NG
C07 02  2  FRE  @0 Europe Sud @2 NG
C07 02  2  ENG  @0 Southern Europe @2 NG
C07 02  2  SPA  @0 Europa Sur @2 NG
C07 03  2  FRE  @0 Europe
C07 03  2  ENG  @0 Europe
C07 03  2  SPA  @0 Europa
N21       @1 034
N82       @1 PSI

Format Inist (serveur)

NO : PASCAL 03-0063631 INIST
ET : Geochemical indicators of possible ongoing volcanic unrest at Nisyros Island (Greece)
AU : CHIODINI (Giovanni); BROMBACH (Tatjana); CALIRO (Stefano); CARDELLINI (Carlo); MARINI (Luigi); DIETRICH (Volker)
AF : Osservatorio Vesuviano INGV/Napoli/Italie (1 aut., 2 aut., 3 aut., 4 aut.); Dip.Te.Ris., University di Geneva/Italie (5 aut.); Institute of Mineralogy and Petrography, ETH-Zürich/Suisse (6 aut.)
DT : Publication en série; Niveau analytique
SO : Geophysical research letters; ISSN 0094-8276; Coden GPRLAJ; Etats-Unis; Da. 2002; Vol. 29; No. 16; 6.1-5.4; Bibl. 17 ref.
LA : Anglais
EA : Significant changes occurred in the chemistry of gases discharged from Nisyros fumaroles in the years, 1997-2001, following a strong seismic crisis. Increasing H2S/CO2 ratios and decreasing CH4/CO2 ratios are attributed to an increased contribution of magmatic fluids to the hydrothermal system. Some fumaroles showed concurrent increases in H2 and CO contents implying increases in temperature and pressure in the upper parts of the hydrothermal system. These changes reinforce the possibility of an increased hazard of hydrothermal eruptions at present with respect to the '90's. Moreover, both the present events and the historical hydrothermal eruptions may represent precursory signals of a new period of volcanic unrest at Nisyros.
CC : 222A01; 220B03; 001E01F01; 001E01B03
FD : Iles Egée Grèce; Gaz; Volcanisme; Analyse chimique; Fumerolle; Dioxyde carbone; Gaz hydrogène sulfuré; Rapport chimique; Méthane; Activité hydrothermale; Hydrogène; Monoxyde carbone; Condition pression température; Risque volcanique; Eruption; Phénomène précurseur; Ile Nisyros; Gaz volcanique; Fluide magmatique; Système hydrothermal
FG : Grèce; Europe Sud; Europe
ED : Greek Aegean Islands; gases; volcanism; chemical analysis; fumaroles; carbon dioxide; hydrogen sulfide gas; chemical ratios; methane; hydrothermal activity; hydrogen; carbon monoxide; P-T conditions; volcanic risk; eruptions; precursors
EG : Greece; Southern Europe; Europe
SD : Islas Egeas Griegas; Gas; Análisis químico; Fumarola; Gas sulfhídrico; Relación química; Metano; Hidrógeno; Condición PT; Erupción; Fenómeno precursor
LO : INIST-16687.354000105605150060
ID : 03-0063631

Links to Exploration step

Pascal:03-0063631

Le document en format XML

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<term>chemical ratios</term>
<term>eruptions</term>
<term>fumaroles</term>
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<term>Risque volcanique</term>
<term>Eruption</term>
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<div type="abstract" xml:lang="en">Significant changes occurred in the chemistry of gases discharged from Nisyros fumaroles in the years, 1997-2001, following a strong seismic crisis. Increasing H
<sub>2</sub>
S/CO
<sub>2</sub>
ratios and decreasing CH
<sub>4</sub>
/CO
<sub>2</sub>
ratios are attributed to an increased contribution of magmatic fluids to the hydrothermal system. Some fumaroles showed concurrent increases in H
<sub>2</sub>
and CO contents implying increases in temperature and pressure in the upper parts of the hydrothermal system. These changes reinforce the possibility of an increased hazard of hydrothermal eruptions at present with respect to the '90's. Moreover, both the present events and the historical hydrothermal eruptions may represent precursory signals of a new period of volcanic unrest at Nisyros.</div>
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<s0>Significant changes occurred in the chemistry of gases discharged from Nisyros fumaroles in the years, 1997-2001, following a strong seismic crisis. Increasing H
<sub>2</sub>
S/CO
<sub>2</sub>
ratios and decreasing CH
<sub>4</sub>
/CO
<sub>2</sub>
ratios are attributed to an increased contribution of magmatic fluids to the hydrothermal system. Some fumaroles showed concurrent increases in H
<sub>2</sub>
and CO contents implying increases in temperature and pressure in the upper parts of the hydrothermal system. These changes reinforce the possibility of an increased hazard of hydrothermal eruptions at present with respect to the '90's. Moreover, both the present events and the historical hydrothermal eruptions may represent precursory signals of a new period of volcanic unrest at Nisyros.</s0>
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<s0>gases</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="2" l="SPA">
<s0>Gas</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="2" l="FRE">
<s0>Volcanisme</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="2" l="ENG">
<s0>volcanism</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="2" l="FRE">
<s0>Analyse chimique</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="2" l="ENG">
<s0>chemical analysis</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="2" l="SPA">
<s0>Análisis químico</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="2" l="FRE">
<s0>Fumerolle</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="2" l="ENG">
<s0>fumaroles</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="2" l="SPA">
<s0>Fumarola</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="2" l="FRE">
<s0>Dioxyde carbone</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="2" l="ENG">
<s0>carbon dioxide</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="2" l="FRE">
<s0>Gaz hydrogène sulfuré</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="2" l="ENG">
<s0>hydrogen sulfide gas</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="2" l="SPA">
<s0>Gas sulfhídrico</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="2" l="FRE">
<s0>Rapport chimique</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="2" l="ENG">
<s0>chemical ratios</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="2" l="SPA">
<s0>Relación química</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="2" l="FRE">
<s0>Méthane</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="2" l="ENG">
<s0>methane</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="2" l="SPA">
<s0>Metano</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="2" l="FRE">
<s0>Activité hydrothermale</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="2" l="ENG">
<s0>hydrothermal activity</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="2" l="FRE">
<s0>Hydrogène</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="2" l="ENG">
<s0>hydrogen</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="2" l="SPA">
<s0>Hidrógeno</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="2" l="FRE">
<s0>Monoxyde carbone</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="2" l="ENG">
<s0>carbon monoxide</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="2" l="FRE">
<s0>Condition pression température</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="ENG">
<s0>P-T conditions</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="SPA">
<s0>Condición PT</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="2" l="FRE">
<s0>Risque volcanique</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="2" l="ENG">
<s0>volcanic risk</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="2" l="FRE">
<s0>Eruption</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="2" l="ENG">
<s0>eruptions</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="2" l="SPA">
<s0>Erupción</s0>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="2" l="FRE">
<s0>Phénomène précurseur</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="2" l="ENG">
<s0>precursors</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="2" l="SPA">
<s0>Fenómeno precursor</s0>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="2" l="FRE">
<s0>Ile Nisyros</s0>
<s4>INC</s4>
<s5>52</s5>
</fC03>
<fC03 i1="18" i2="2" l="FRE">
<s0>Gaz volcanique</s0>
<s4>INC</s4>
<s5>53</s5>
</fC03>
<fC03 i1="19" i2="2" l="FRE">
<s0>Fluide magmatique</s0>
<s4>INC</s4>
<s5>54</s5>
</fC03>
<fC03 i1="20" i2="2" l="FRE">
<s0>Système hydrothermal</s0>
<s4>INC</s4>
<s5>55</s5>
</fC03>
<fC06>
<s0>ILS</s0>
</fC06>
<fC07 i1="01" i2="2" l="FRE">
<s0>Grèce</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="2" l="ENG">
<s0>Greece</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="2" l="SPA">
<s0>Grecia</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="2" l="FRE">
<s0>Europe Sud</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="2" l="ENG">
<s0>Southern Europe</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="2" l="SPA">
<s0>Europa Sur</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="03" i2="2" l="FRE">
<s0>Europe</s0>
</fC07>
<fC07 i1="03" i2="2" l="ENG">
<s0>Europe</s0>
</fC07>
<fC07 i1="03" i2="2" l="SPA">
<s0>Europa</s0>
</fC07>
<fN21>
<s1>034</s1>
</fN21>
<fN82>
<s1>PSI</s1>
</fN82>
</pA>
</standard>
<server>
<NO>PASCAL 03-0063631 INIST</NO>
<ET>Geochemical indicators of possible ongoing volcanic unrest at Nisyros Island (Greece)</ET>
<AU>CHIODINI (Giovanni); BROMBACH (Tatjana); CALIRO (Stefano); CARDELLINI (Carlo); MARINI (Luigi); DIETRICH (Volker)</AU>
<AF>Osservatorio Vesuviano INGV/Napoli/Italie (1 aut., 2 aut., 3 aut., 4 aut.); Dip.Te.Ris., University di Geneva/Italie (5 aut.); Institute of Mineralogy and Petrography, ETH-Zürich/Suisse (6 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Geophysical research letters; ISSN 0094-8276; Coden GPRLAJ; Etats-Unis; Da. 2002; Vol. 29; No. 16; 6.1-5.4; Bibl. 17 ref.</SO>
<LA>Anglais</LA>
<EA>Significant changes occurred in the chemistry of gases discharged from Nisyros fumaroles in the years, 1997-2001, following a strong seismic crisis. Increasing H
<sub>2</sub>
S/CO
<sub>2</sub>
ratios and decreasing CH
<sub>4</sub>
/CO
<sub>2</sub>
ratios are attributed to an increased contribution of magmatic fluids to the hydrothermal system. Some fumaroles showed concurrent increases in H
<sub>2</sub>
and CO contents implying increases in temperature and pressure in the upper parts of the hydrothermal system. These changes reinforce the possibility of an increased hazard of hydrothermal eruptions at present with respect to the '90's. Moreover, both the present events and the historical hydrothermal eruptions may represent precursory signals of a new period of volcanic unrest at Nisyros.</EA>
<CC>222A01; 220B03; 001E01F01; 001E01B03</CC>
<FD>Iles Egée Grèce; Gaz; Volcanisme; Analyse chimique; Fumerolle; Dioxyde carbone; Gaz hydrogène sulfuré; Rapport chimique; Méthane; Activité hydrothermale; Hydrogène; Monoxyde carbone; Condition pression température; Risque volcanique; Eruption; Phénomène précurseur; Ile Nisyros; Gaz volcanique; Fluide magmatique; Système hydrothermal</FD>
<FG>Grèce; Europe Sud; Europe</FG>
<ED>Greek Aegean Islands; gases; volcanism; chemical analysis; fumaroles; carbon dioxide; hydrogen sulfide gas; chemical ratios; methane; hydrothermal activity; hydrogen; carbon monoxide; P-T conditions; volcanic risk; eruptions; precursors</ED>
<EG>Greece; Southern Europe; Europe</EG>
<SD>Islas Egeas Griegas; Gas; Análisis químico; Fumarola; Gas sulfhídrico; Relación química; Metano; Hidrógeno; Condición PT; Erupción; Fenómeno precursor</SD>
<LO>INIST-16687.354000105605150060</LO>
<ID>03-0063631</ID>
</server>
</inist>
</record>

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