Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)

Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)

We use geothermal reconstruction of the ground surface temperature (GST) history early obtained in the Middle Urals to determine the surface heat flux (SHF) history over the past 35 kyr. A new algorithm of GST–SHF transformation was applied to solve this problem. The timescale of geothermal reconstr...

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Main Authors: D. Y. Demezhko, A. A. Gornostaeva
Format: Article
Language:English
Published: Copernicus Publications 2015-04-01
Series:Climate of the Past
Online Access:http://www.clim-past.net/11/647/2015/cp-11-647-2015.pdf
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spelling doaj-880e6b2b8a5944ac8845fa17027166642020-11-24T21:44:54ZengCopernicus PublicationsClimate of the Past1814-93241814-93322015-04-0111464765210.5194/cp-11-647-2015Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)D. Y. Demezhko0A. A. Gornostaeva1Institute of Geophysics UB RAS, Yekaterinburg, RussiaInstitute of Geophysics UB RAS, Yekaterinburg, RussiaWe use geothermal reconstruction of the ground surface temperature (GST) history early obtained in the Middle Urals to determine the surface heat flux (SHF) history over the past 35 kyr. A new algorithm of GST–SHF transformation was applied to solve this problem. The timescale of geothermal reconstructions has been corrected by comparing the estimated heat flux and annual insolation at the latitude of 60° N. The consistency of SHF and insolation changes on the interval 35–6 kyr BP with the linear correlation coefficient <i>R</i> = 0.99 points to orbital factors as the main cause of climatic changes during the Pleistocene–Holocene transition. The amplitude of SHF variations is about 1.3% of the insolation change amplitude. The increase of carbon dioxide concentrations lagged by 2–3 kyr from the SHF increase and occurred synchronously with GST changes.http://www.clim-past.net/11/647/2015/cp-11-647-2015.pdf
collection DOAJ
language English
format Article
sources DOAJ
author D. Y. Demezhko
A. A. Gornostaeva
spellingShingle D. Y. Demezhko
A. A. Gornostaeva
Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)
Climate of the Past
author_facet D. Y. Demezhko
A. A. Gornostaeva
author_sort D. Y. Demezhko
title Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)
title_short Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)
title_full Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)
title_fullStr Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)
title_full_unstemmed Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)
title_sort late pleistocene–holocene ground surface heat flux changes reconstructed from borehole temperature data (the urals, russia)
publisher Copernicus Publications
series Climate of the Past
issn 1814-9324
1814-9332
publishDate 2015-04-01
description We use geothermal reconstruction of the ground surface temperature (GST) history early obtained in the Middle Urals to determine the surface heat flux (SHF) history over the past 35 kyr. A new algorithm of GST–SHF transformation was applied to solve this problem. The timescale of geothermal reconstructions has been corrected by comparing the estimated heat flux and annual insolation at the latitude of 60° N. The consistency of SHF and insolation changes on the interval 35–6 kyr BP with the linear correlation coefficient <i>R</i> = 0.99 points to orbital factors as the main cause of climatic changes during the Pleistocene–Holocene transition. The amplitude of SHF variations is about 1.3% of the insolation change amplitude. The increase of carbon dioxide concentrations lagged by 2–3 kyr from the SHF increase and occurred synchronously with GST changes.
url http://www.clim-past.net/11/647/2015/cp-11-647-2015.pdf
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AT aagornostaeva latepleistoceneholocenegroundsurfaceheatfluxchangesreconstructedfromboreholetemperaturedatatheuralsrussia
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