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Time-dependent CO2 variations in Lake Albano associated with seismic activity
Author(s)
Language
English
Obiettivo Specifico
2.4. TTC - Laboratori di geochimica dei fluidi
4.5. Studi sul degassamento naturale e sui gas petroliferi
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
4/74 (2012)
ISSN
0258-8900
Electronic ISSN
1432-0819
Publisher
Springer Berlin Heidelberg
Pages (printed)
861-871
Issued date
2012
Abstract
Lake Albano (Alban Hills volcanic complex,
Central Italy) is located in a densely populated area near
Rome. The deep lake waters have significant dissolved CO2
concentrations, probably related to sub-lacustrine fluid discharges
fed by a pressurized CO2-rich reservoir. The analytical
results of geochemical surveys carried out in 1989 2010 highlight the episodes of CO2 removal from the lake.
The total mass of dissolved CO2 decreased from ∼5.8×
107 kg in 1989 to ∼0.5×107 kg in 2010, following an
exponential decreasing trend. Calculated values of both dissolved
inorganic carbon and CO2 concentrations along the
vertical profile of the lake indicate that this decrease is
caused by CO2 release from the epilimnion, at depth <9 m,
combined with (1) water circulation at depth <95 m and (2)
CO2 diffusion from the deeper lake layers. According to this
model, Lake Albano was affected by a large CO2 input that
coincided with the last important seismic swarm at Alban
Hills in 1989, suggesting an intimate relationship between
the addition of deep-originated CO2 to the lake and seismic
activity. In the case of a CO2 degassing event of an order of
magnitude larger than the one that occurred in 1989, the
deepest part of Lake Albano would become CO2-saturated,
resulting in conditions compatible with the occurrence of a
gas outburst. These results reinforce the idea that a sudden
CO2 input into the lake may cause the release of a dense gas
cloud, presently representing the major volcanic threat for
this densely populated area
Central Italy) is located in a densely populated area near
Rome. The deep lake waters have significant dissolved CO2
concentrations, probably related to sub-lacustrine fluid discharges
fed by a pressurized CO2-rich reservoir. The analytical
results of geochemical surveys carried out in 1989 2010 highlight the episodes of CO2 removal from the lake.
The total mass of dissolved CO2 decreased from ∼5.8×
107 kg in 1989 to ∼0.5×107 kg in 2010, following an
exponential decreasing trend. Calculated values of both dissolved
inorganic carbon and CO2 concentrations along the
vertical profile of the lake indicate that this decrease is
caused by CO2 release from the epilimnion, at depth <9 m,
combined with (1) water circulation at depth <95 m and (2)
CO2 diffusion from the deeper lake layers. According to this
model, Lake Albano was affected by a large CO2 input that
coincided with the last important seismic swarm at Alban
Hills in 1989, suggesting an intimate relationship between
the addition of deep-originated CO2 to the lake and seismic
activity. In the case of a CO2 degassing event of an order of
magnitude larger than the one that occurred in 1989, the
deepest part of Lake Albano would become CO2-saturated,
resulting in conditions compatible with the occurrence of a
gas outburst. These results reinforce the idea that a sudden
CO2 input into the lake may cause the release of a dense gas
cloud, presently representing the major volcanic threat for
this densely populated area
References
Amato A, Chiarabba C (1995) Recent uplift of the Alban Hills Volcano
(Italy): evidence for a magmatic inflation? Geophys Res Lett
22:1985–1988
Amato A, Chiarabba C, Cocco M, Di Bona M, Selvaggi G (1994) The
1989–1990 seismic swarm in the Alban Hills volcanic area,
central Italy. J Volcanol Geotherm Res 61:225–237 Anzidei M, Carapezza ML, Esposito A, Giordano G, Lelli M, Tarchini
L (2008) The Albano Maar lake high resolution bathymetry and
dissolved CO2 budget (Colli Albani volcano, Italy): constrains to
hazard evaluation. J Volcanol Geotherm Res 171:258–268
Avallone A, Zollo A, Briole P, Delacourt C, Beauducel F (1999)
Subsidence of Campi Flegrei (Italy) detected by SAR interferometry.
Geophys Res Lett 26:2303–2306
Barberi F, Chelini G, Marinelli G, Martini M (1989) The gas cloud of
Lake Nyos (Cameroon, 1986): results of the Italian technical
mission. J Volcanol Geotherm Res 39:125–134
Boari E, Avanzinelli R, Melluso L, Giordano G, Mattei M, De Benedetti
AA, Morra V, Conticelli S (2009) Isotope geochemistry (Sr-Nd-Pb)
and petrogenesis of leucite-bearing volcanic rocks from “Colli
Albani” volcano, Roman Magmatic Province, Central Italy: inferences
on volcano evolution and magma genesis. Bull Volcanol
71:977–1005
Boni C, Bono P, Lombardi S, Mastrorillo L, Percopo C (1995) Hydrogeology,
fluid geochemistry and thermalism. In: Trigila R (ed)
The volcano of the Alban Hills. La Sapienza University, Rome,
pp 221–242
Caliro S, Chiodini G, Izzo G, Minopoli C, Signorini A, Avino R,
Granieri D (2008) Geochemical and biochemical evidence of lake
overturn and fish kill at Lake Averno, Italy. J Volcanol Geotherm
Res 178:305–316. doi:10.1016/j.jvolgeores.2008.06.023
Capelli G, Mazza R (2005)Water criticality in the Colli Albani (Rome, Italy).
Giorn Geol Appl 1261–271, doi:10.1474/GGA.2005-01.0-26.0026
Carapezza ML, Lelli M, Tarchini L (2008) Geochemistry of the Albano
and Nemi crater lakes in the volcanic district of Alban Hills
(Rome, Italy). J Volcanol Geotherm Res 178:297–304
Cerling TE, Solomon DK, Quade J, Bowman JR (1991) On the
isotopic composition of carbon in soil carbon dioxide. Geochim
Cosmochim Acta 55:3403–3405
Chiarabba C, Moretti M (2006) An insight into the unrest phenomena
at the Campi Flegrei caldera from Vp and Vp/Vs tomography.
Terra Nova 18:373–379. doi:10.1111/j.1365-3121.2006.00701.x
Chiarabba C, Amato A, Delaney PT (1997) Crustal structure, evolution,
and volcanic unrest of the Alban Hills, Central Italy. Bull
Volcanol 59:161–170
Chiarabba C, Jovane L, Di Stefano R (2005) A new view of Italian
seismicity using 20 years of instrumental recordings. Tectonophysics
395:251–268
Chiodini G, Frondini F (2001) Carbon dioxide degassing from the
Albani Hills volcanic region, Central Italy. Chem Geol 177:67–83
Chiodini G, Cardellini C, Amato A, Boschi E, Caliro S, Frondini F,
Ventura G (2004) Carbon dioxide Earth degassing and seismogenesis
in central and southern Italy. Geophys Res Lett 31:
L07615. doi:10.1029/2004gl019480
Cioni R, Guidi M, Raco B, Marini L, Gambardella B (2003) Water
chemistry of Lake Albano (Italy). J Volcanol Geotherm Res
120:179–195
De Benedetti AA, Funiciello R, Giordano G, Caprilli E, Diano G
(2008) Volcanology history and legends of the Albano maar. In:
Cashman K, Giordano G (eds) Volcanoes and Human History. J
Volcanol Geoth Res, 176, pp. 387–406
De Rita D, Funiciello R, Parotto M (1988) Carta Geologica del Complesso
vulcanico dei Colli Albani (Geological map of the Colli
Albani volcanic complex), scale 1:50,000, Consiglio Nazionale
delle Ricerche
Evans WC, Kling GW, Tuttle ML, Tanyileke G, White LD (1993) Gas
buildup in Lake Nyos, Cameroon: the recharge process and its
consequences. Appl Geochem 8:207–221
Evans WC, White LD, Tuttle ML, Kling GW, Tanyileke G, Michel RL
(1994) Six years of change at Lake Nyos, Cameroon, yield clues to
the past and cautions for the future. Geochem J 28:139–162
Farrar CD, Sorey MS, Evans WC, Howle JF, Kerr BD, Kennedy M,
King CY, Southon JR (1995) Forest killing diffuse CO2 emission
(Italy): evidence for a magmatic inflation? Geophys Res Lett
22:1985–1988
Amato A, Chiarabba C, Cocco M, Di Bona M, Selvaggi G (1994) The
1989–1990 seismic swarm in the Alban Hills volcanic area,
central Italy. J Volcanol Geotherm Res 61:225–237 Anzidei M, Carapezza ML, Esposito A, Giordano G, Lelli M, Tarchini
L (2008) The Albano Maar lake high resolution bathymetry and
dissolved CO2 budget (Colli Albani volcano, Italy): constrains to
hazard evaluation. J Volcanol Geotherm Res 171:258–268
Avallone A, Zollo A, Briole P, Delacourt C, Beauducel F (1999)
Subsidence of Campi Flegrei (Italy) detected by SAR interferometry.
Geophys Res Lett 26:2303–2306
Barberi F, Chelini G, Marinelli G, Martini M (1989) The gas cloud of
Lake Nyos (Cameroon, 1986): results of the Italian technical
mission. J Volcanol Geotherm Res 39:125–134
Boari E, Avanzinelli R, Melluso L, Giordano G, Mattei M, De Benedetti
AA, Morra V, Conticelli S (2009) Isotope geochemistry (Sr-Nd-Pb)
and petrogenesis of leucite-bearing volcanic rocks from “Colli
Albani” volcano, Roman Magmatic Province, Central Italy: inferences
on volcano evolution and magma genesis. Bull Volcanol
71:977–1005
Boni C, Bono P, Lombardi S, Mastrorillo L, Percopo C (1995) Hydrogeology,
fluid geochemistry and thermalism. In: Trigila R (ed)
The volcano of the Alban Hills. La Sapienza University, Rome,
pp 221–242
Caliro S, Chiodini G, Izzo G, Minopoli C, Signorini A, Avino R,
Granieri D (2008) Geochemical and biochemical evidence of lake
overturn and fish kill at Lake Averno, Italy. J Volcanol Geotherm
Res 178:305–316. doi:10.1016/j.jvolgeores.2008.06.023
Capelli G, Mazza R (2005)Water criticality in the Colli Albani (Rome, Italy).
Giorn Geol Appl 1261–271, doi:10.1474/GGA.2005-01.0-26.0026
Carapezza ML, Lelli M, Tarchini L (2008) Geochemistry of the Albano
and Nemi crater lakes in the volcanic district of Alban Hills
(Rome, Italy). J Volcanol Geotherm Res 178:297–304
Cerling TE, Solomon DK, Quade J, Bowman JR (1991) On the
isotopic composition of carbon in soil carbon dioxide. Geochim
Cosmochim Acta 55:3403–3405
Chiarabba C, Moretti M (2006) An insight into the unrest phenomena
at the Campi Flegrei caldera from Vp and Vp/Vs tomography.
Terra Nova 18:373–379. doi:10.1111/j.1365-3121.2006.00701.x
Chiarabba C, Amato A, Delaney PT (1997) Crustal structure, evolution,
and volcanic unrest of the Alban Hills, Central Italy. Bull
Volcanol 59:161–170
Chiarabba C, Jovane L, Di Stefano R (2005) A new view of Italian
seismicity using 20 years of instrumental recordings. Tectonophysics
395:251–268
Chiodini G, Frondini F (2001) Carbon dioxide degassing from the
Albani Hills volcanic region, Central Italy. Chem Geol 177:67–83
Chiodini G, Cardellini C, Amato A, Boschi E, Caliro S, Frondini F,
Ventura G (2004) Carbon dioxide Earth degassing and seismogenesis
in central and southern Italy. Geophys Res Lett 31:
L07615. doi:10.1029/2004gl019480
Cioni R, Guidi M, Raco B, Marini L, Gambardella B (2003) Water
chemistry of Lake Albano (Italy). J Volcanol Geotherm Res
120:179–195
De Benedetti AA, Funiciello R, Giordano G, Caprilli E, Diano G
(2008) Volcanology history and legends of the Albano maar. In:
Cashman K, Giordano G (eds) Volcanoes and Human History. J
Volcanol Geoth Res, 176, pp. 387–406
De Rita D, Funiciello R, Parotto M (1988) Carta Geologica del Complesso
vulcanico dei Colli Albani (Geological map of the Colli
Albani volcanic complex), scale 1:50,000, Consiglio Nazionale
delle Ricerche
Evans WC, Kling GW, Tuttle ML, Tanyileke G, White LD (1993) Gas
buildup in Lake Nyos, Cameroon: the recharge process and its
consequences. Appl Geochem 8:207–221
Evans WC, White LD, Tuttle ML, Kling GW, Tanyileke G, Michel RL
(1994) Six years of change at Lake Nyos, Cameroon, yield clues to
the past and cautions for the future. Geochem J 28:139–162
Farrar CD, Sorey MS, Evans WC, Howle JF, Kerr BD, Kennedy M,
King CY, Southon JR (1995) Forest killing diffuse CO2 emission
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