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Article: A model of gas buildup and release in crater lakes

TitleA model of gas buildup and release in crater lakes
Authors
KeywordsCarbon dioxide
Crater lake
Gas buildup
Gas release
Stratified lake
Issue Date1996
PublisherAmerican Geophysical Union.
Citation
Journal Of Geophysical Research B: Solid Earth, 1996, v. 101 n. 12, p. 28253-28263 How to Cite?
AbstractThe sudden release of carbon dioxide gas, which may accumulate gradually within the stratified water bodies of a crater lake, caused two fatal disasters in Cameroon during the past decade. We model the various processes that may have led to the release by considering (1) gas injection, (2) an internal triggering mechanism, (3) propagation of a disturbance after triggering, and (4) the forces that end the outburst. We suggest that the 1986 Lake Nyos outburst was triggered at the lake bottom. The final explosive stage of the release ended quickly when a sufficiently large volume of gas bubbles prevented circulation of water eddies within the lake. A cellular automaton model is used to estimate the amount of carbon dioxide gas released and the characteristic time interval between successive outbursts. If both the gas accumulation rate and the diffusion rate of carbon dioxide through water are constant, then rapid gas release, will occur at fairly regular intervals. In which case, the amount of gas released from Lake Nyos is 0.17±0.05 km3 at standard temperature and pressure each 37±10 years. It is possible, however, that an external event could trigger a sudden release or that the diffusion rate of carbon dioxide may change as more gas accumulates, which could shorten the release time.
Persistent Identifierhttp://hdl.handle.net/10722/80916
ISSN
2015 Impact Factor: 3.318
2015 SCImago Journal Rankings: 2.310
References

 

DC FieldValueLanguage
dc.contributor.authorChau, HFen_HK
dc.contributor.authorKwok, PKen_HK
dc.contributor.authorMak, Len_HK
dc.date.accessioned2010-09-06T08:11:42Z-
dc.date.available2010-09-06T08:11:42Z-
dc.date.issued1996en_HK
dc.identifier.citationJournal Of Geophysical Research B: Solid Earth, 1996, v. 101 n. 12, p. 28253-28263en_HK
dc.identifier.issn0148-0227en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80916-
dc.description.abstractThe sudden release of carbon dioxide gas, which may accumulate gradually within the stratified water bodies of a crater lake, caused two fatal disasters in Cameroon during the past decade. We model the various processes that may have led to the release by considering (1) gas injection, (2) an internal triggering mechanism, (3) propagation of a disturbance after triggering, and (4) the forces that end the outburst. We suggest that the 1986 Lake Nyos outburst was triggered at the lake bottom. The final explosive stage of the release ended quickly when a sufficiently large volume of gas bubbles prevented circulation of water eddies within the lake. A cellular automaton model is used to estimate the amount of carbon dioxide gas released and the characteristic time interval between successive outbursts. If both the gas accumulation rate and the diffusion rate of carbon dioxide through water are constant, then rapid gas release, will occur at fairly regular intervals. In which case, the amount of gas released from Lake Nyos is 0.17±0.05 km3 at standard temperature and pressure each 37±10 years. It is possible, however, that an external event could trigger a sudden release or that the diffusion rate of carbon dioxide may change as more gas accumulates, which could shorten the release time.en_HK
dc.languageengen_HK
dc.publisherAmerican Geophysical Union.en_HK
dc.relation.ispartofJournal of Geophysical Research B: Solid Earthen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_HK
dc.subjectCarbon dioxide-
dc.subjectCrater lake-
dc.subjectGas buildup-
dc.subjectGas release-
dc.subjectStratified lake-
dc.titleA model of gas buildup and release in crater lakesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1934-8843&volume=101&spage=28253&epage=28263&date=1996&atitle=A+Model+of+Gas+Buildup+and+Release+in+Crater+Lakesen_HK
dc.identifier.emailChau, HF: hfchau@hku.hken_HK
dc.identifier.authorityChau, HF=rp00669en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.scopuseid_2-s2.0-0030436970en_HK
dc.identifier.hkuros21271en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030436970&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume101en_HK
dc.identifier.issue12en_HK
dc.identifier.spage28253en_HK
dc.identifier.epage28263en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChau, HF=7005742276en_HK
dc.identifier.scopusauthoridKwok, PK=35959135900en_HK
dc.identifier.scopusauthoridMak, L=7004431371en_HK

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