Výsledky vyhledávání - "paleoklimatologi"

Ice core melt features in relation to Antarctic coastal climate

Autor: Sigfus J Johnsen, Jan-Gunnar Winther, Elisabeth Isaksson, Ola Brandt, Michiel R. van den Broeke, L. Karlöf, M. Kaczmarska, Roderik S. W. van de Wal

Publikováno v: Antarctic Science

Measurement of light intensity transmission was carried out on an ice core S100 from coastal Dronning Maud Land (DML). Ice lenses were observed in digital pictures of the core and recorded as peaks in the light transmittance record. The frequency of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a6282612b82c74022664a4296e7e681
https://doi.org/10.1017/s0954102006000319

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Two ice-core delta O-18 records from Svalbard illustrating climate and sea-ice variability over the last 400 years

Autor: L. Karlöf, Hideaki Motoyama, Makoto Igarashi, Jack Kohler, Rein Vaikmäe, Elisabeth Isaksson, Harro A. J. Meijer, Roderik S. W. van de Wal, Veijo A. Pohjola, Tõnu Martma, John C. Moore

Publikováno v: Holocene, 15(4), 501-509. SAGE Publications Inc.
The Holocene

Ice cores from the relatively low-lying ice caps in Svalbard have not been widely exploited in climatic studies owing to uncertainties about the effect of meltwater percolation. However, results from two new Svalbard ice cores, at Lomonosovfonna and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e353edc48a6fc764d0ad45865fe7af6e
https://doi.org/10.1191/0959683605hl820rp

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Glacial history, Holocene shoreline displacement and palaeoclimate based on radiocarbon ages in the area of Bockfjorden, north-western Spitsbergen, Svalbard

Autor: Otto Salvigsen, Kirsti Høgvard

Publikováno v: Polar Research
Polar Research; Vol 25, No 1 (2006); 15-24

Age determinations of bivalve shells indicate that Bockfjorden, a fjord in north-western Spitsbergen, Svalbard, was deglaciated shortly before 10 Kya, and that the upper marine limit in this area, with an altitude of about 50 m a.s.l., has the same a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::533d65b50d46b1ef9940979c6dddc2a1
https://doi.org/10.1111/j.1751-8369.2005.tb00021.x

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A highly unstable Holocene climate in the subpolar North Atlantic: evidence from diatoms

Autor: Matthias Moros, Cathrine Andersen, Nalan Koc

Publikováno v: Quaternary Science Reviews (0277-3791) (Pergamon-elsevier Science Ltd), 2004-11, Vol. 23, N. 20-22, P. 2155-2166
Quaternary Science Reviews

A composite record (LO09-14) of three sediment cores from the subpolar North Atlantic (Reykjanes Ridge) was investigated in order to assess surface ocean variability during the last 11 kyr. The core site is today partly under the influence of the Irm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ce45735f502ec94209fe507384b500c
https://doi.org/10.1016/j.quascirev.2004.08.004

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A 1500 year record of accumulation at Amundsenisen western Dronning Maud Land, Antarctica, derived from electrical and radioactive measurements on a 120 m ice core

Autor: Jack Kohler, L. Karlöf, J. F. Pinglot, M. Nyman, Elisabeth Isaksson, Rickard Pettersson, Per Holmlund, Margareta Hansson, C. J. van der Veen, M. Stenberg, R. S. W. van de Wal, Frank Wilhelms, M. Thomassen, Jan-Gunnar Winther

Publikováno v: 12471-12483
Journal of Geophysical Research
D10
Scopus-Elsevier

During the Nordic EPICA pre-site survey in Dronning Maud Land in 1997/1998 a 120 m long ice core was retrieved (76°00′S 08°03′W, 2400 m above sea level). The whole core has been measured using the electric conductivity measurement (ECM) and die

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3049b60fe5a146cba7e8935a0fa6055b
https://doi.org/10.1029/1999jd901119

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Past environmental and climate changes in northern Tanzania : vegetation and lake level variability in Empakaai Crater

Autor: Ryner, Maria

Diss. (sammanfattning) Stockholm : Stockholms universitet, 2007.
Härtill 4 uppsatser.

Externí odkaz: http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6835

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Warm summers and ion concentrations in snow: comparison of present day with Medieval Warm Epoch from snow pits and an ice core from Lomonosovfonna, Svalbard

Autor: Elisabeth Isaksson, Kristiina Virkkunen, John C. Moore, Teija Kekonen, Aslak Grinsted, Paavo Perämäki, Veijo A. Pohjola

Publikováno v: Journal of Glaciology

Snow pits sampled during two consecutive years (2001, 2002) at the summit of Lomonosovfonna ice cap in central Spitsbergen, Svalbard, showed that ion concentrations were spatially homogeneous. The snowpack on Lomonosovfonna shows no evidence of aeros

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aee990dacf14fba2e4d73e63c1cb138b
https://hdl.handle.net/11250/174386

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Insignificant change in Antarctic snowfall since the International Geophysical Year

Autor: Elisabeth Isaksson, Ryan L. Fogt, Daniel A. Dixon, Shih-Yu Wang, Vin Morgan, Andrew J. Monaghan, Susan Kaspari, Tas van Ommen, Jiahong Wen, Hans Oerter, Alexey A. Ekaykin, Massimo Frezzotti, Ian Goodwin, Cornelius J. Van Der Veen, Paul Andrew Mayewski, David H. Bromwich

Publikováno v: Science
11 August
EPIC3Science, 313(5788), pp. 827-831

Antarctic snowfall exhibits substantial variability over a range of time scales, with consequent impacts on global sea level and the mass balance of the ice sheets. To assess how snowfall has affected the thickness of the ice sheets in Antarctica and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd1d2d18cd1d99bc84ae0a5e34718144
https://pubmed.ncbi.nlm.nih.gov/16902135

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