Lilleøren et al (2012)

[Jostemikk]

Ole Humlum er sannelig med på denne publikasjonen også.

Lilleøren et al (2012) http://www.sciencedirect.com/science/article/pii/S0921818112000999

De har sett på mellomistidens temperaturutvikling, og de slår fast at permafrosten i Norge overlevde mellomistidens maksimumstemperatur for ca. 6000 år siden.

Klikk på linken over, for det er svært mange tabeller og kommentarer. Selve publikasjonen koster en god del dollar, så vi får håpe på en billig kopi tilsendt etter litt postmannsarbeide.

Abstract

For Scandinavia in general and Norway in particular the regional distribution of mountain permafrost is reasonably well known, both through ground temperature measurements in boreholes, geophysical soundings and spatial modeling. However, the evolution of permafrost over longer time periods, such as the Holocene, is unknown, but is considered to have significance for landscape development and geomorphological processes in high mountain areas of Scandinavia. In this study two mean annual air temperature series covering the Holocene have been compiled to drive a 1D heat flow model over a 10 kyr period for several sites in Norway. At each site temperature-monitored boreholes exist, which were used to calibrate the model. In addition the spatial distribution of permafrost during selected time periods of the Holocene was addressed using a newly implemented version of an equilibrium permafrost model. The result of this study indicates an altitudinal zonation of relative permafrost age in Norway. We find that permafrost has existed continuously since the deglaciation at the highest altitudes, whereas in large areas where permafrost currently is present, it degraded during the Holocene thermal maximum (HTM). In all boreholes the coldest simulated permafrost occurred during the 'Little Ice Age' (LIA), and also the largest areal distribution of Holocene permafrost in Norway seems to be connected to the LIA.

Highlights

In this paper temperature and spatial distribution of Holocene permafrost in Norway were modeled. This was addressed using a 1D heat flow model and an equilibrium permafrost model revealing an altitudinal age pattern. The oldest permafrost in Norway survived the Holocene Thermal Maximum. Permafrost underlay the largest area, was coldest and probably reached the greatest depths during the 'Little Ice Age'. The thermal state of the ground affects landscape development and is an important control for geomorphological processes.

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[ebye]

På Gammeltråden

http://klimaforskning.com/forum/index.php/topic,234.msg20812.html#msg20812

har du nevnt "kopi". Det er ikke helt enkelt nå, fordi tidsskriftene sier nei til den slags. Vi får se ....   

[ebye]

Det var som jeg antok, Jostemikk. Forlagene aksepterer ikke at artiklene er fritt tilgjengelige for alle. Hver og en må betale for å kunne laste ned.     

[Jostemikk]

Det var som jeg antok, Jostemikk. Forlagene aksepterer ikke at artiklene er fritt tilgjengelige for alle. Hver og en må betale for å kunne laste ned.     

Da får jeg vente noen år til den blir offentlig tilgjengelig, ebye. Dumt men sant.