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Statements

Subject Item
n2:RIV%2F67985530%3A_____%2F12%3A00377803%21RIV13-AV0-67985530
rdf:type
skos:Concept n17:Vysledek
dcterms:description
Atmospheric methane from episodic gas hydrate (GH) destabilization, the %22clathrate gun%22 hypothesis, is proposed to affect past climates, possibly since the Phanerozoic began or earlier. In the terrestrial Beaufort-Mackenzie Basin (BMB), GHs occur commonly below thick ice-bearing permafrost (IBP), but they are rare within it. Two end-member GH models, where gas is either trapped conventionally (Case 1) or where it is trapped dynamically by GH formation (Case 2), were simulated using profile (1-D) models and a 14 Myr ground surface temperature (GST) history based on marine isotopic data, adjusted to the study setting, constrained by deep heat flow, sedimentary succession conductivity, and observed IBP and Type I GH contacts in Mallik wells. Models consider latent heat effects throughout the IBP and GH intervals. Atmospheric methane from episodic gas hydrate (GH) destabilization, the %22clathrate gun%22 hypothesis, is proposed to affect past climates, possibly since the Phanerozoic began or earlier. In the terrestrial Beaufort-Mackenzie Basin (BMB), GHs occur commonly below thick ice-bearing permafrost (IBP), but they are rare within it. Two end-member GH models, where gas is either trapped conventionally (Case 1) or where it is trapped dynamically by GH formation (Case 2), were simulated using profile (1-D) models and a 14 Myr ground surface temperature (GST) history based on marine isotopic data, adjusted to the study setting, constrained by deep heat flow, sedimentary succession conductivity, and observed IBP and Type I GH contacts in Mallik wells. Models consider latent heat effects throughout the IBP and GH intervals.
dcterms:title
Inferred gas hydrate and permafrost stability history models linked to climate change in the Beaufort-Mackenzie Basin, Arctic Canada Inferred gas hydrate and permafrost stability history models linked to climate change in the Beaufort-Mackenzie Basin, Arctic Canada
skos:prefLabel
Inferred gas hydrate and permafrost stability history models linked to climate change in the Beaufort-Mackenzie Basin, Arctic Canada Inferred gas hydrate and permafrost stability history models linked to climate change in the Beaufort-Mackenzie Basin, Arctic Canada
skos:notation
RIV/67985530:_____/12:00377803!RIV13-AV0-67985530
n17:predkladatel
n18:ico%3A67985530
n3:aktivita
n5:Z n5:I
n3:aktivity
I, Z(AV0Z30120515)
n3:cisloPeriodika
2
n3:dodaniDat
n9:2013
n3:domaciTvurceVysledku
n6:6715125
n3:druhVysledku
n7:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
141291
n3:idVysledku
RIV/67985530:_____/12:00377803
n3:jazykVysledku
n15:eng
n3:klicovaSlova
climate change; Beaufort-Mackenzie Basin; permafrost
n3:klicoveSlovo
n8:climate%20change n8:permafrost n8:Beaufort-Mackenzie%20Basin
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[1BF998942CB9]
n3:nazevZdroje
Climate of the Past
n3:obor
n13:DC
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n9:2012
n3:svazekPeriodika
8
n3:tvurceVysledku
Osadetz, K. Majorowicz, J. Šafanda, Jan
n3:wos
000304059700019
n3:zamer
n16:AV0Z30120515
s:issn
1814-9324
s:numberOfPages
16
n10:doi
10.5194/cp-8-667-2012