Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Teija Kekonen"'
Publikováno v:
Annals of Glaciology. 42:345-351
Svalbard ice cores have not yet been fully exploited for studies of climate and environmental conditions. In one recently drilled ice core from Lomonosovfonna, we have studied the methanesulfonic acid (MSA) records in relation to temperature and sea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f3402fde716f01dffb7fdeda2aff14f
https://doi.org/10.3189/172756405781812637
https://doi.org/10.3189/172756405781812637
Autor:
Roderik S. W. van de Wal, Robert Mulvaney, Elisabeth Isaksson, John C. Moore, Veijo A. Pohjola, Teija Kekonen
Publikováno v:
Annals of Glaciology. 35:261-265
Detailed chemical analysis of the 122 m, relatively high-altitude and low-melt Lomonosovfonna ice core provides the best-dated record of nitrate from Svalbard. A very significant non-linear trend present in the record shows: (a) a rise in concentrati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3381d8109358fd94f4ff9977fad8332e
https://doi.org/10.3189/172756402781817121
https://doi.org/10.3189/172756402781817121
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
https://hdl.handle.net/11250/174386
Publikováno v:
Journal of Geophysical Research. 111
[1] The 800-year sulfate record from Lomonosovfonna was analyzed by a novel multiple linear regression algorithm that attempts to explain sulfate variability in terms of other chemical species measured in the core and sulfur emission inventories. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cecf6d13c060b12fb895875902034d61
https://doi.org/10.1029/2005jd006453
https://doi.org/10.1029/2005jd006453
Publikováno v:
Polar Research; Vol 24, No 1-2 (2005); 33-40
Scopus-Elsevier
Scopus-Elsevier
The largest sulphuric acid event revealed in an ice core from the Lomonosovfonna ice cap, Svalbard, is associated with the densest concentration of microparticles in the ice core at 66.99 m depth. Electron microscope analysis of a volcanic ash partic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d42dc669ce6da2859c5d09654c13c91d
http://www.polarresearch.net/index.php/polar/article/view/6251
http://www.polarresearch.net/index.php/polar/article/view/6251
Publikováno v:
Geophysical Research Letters. 32
We examine the impact of melt water percolation on the soluble ion chemical record from the Lomonosovfonna ice core. Principle component analysis shows that melting produces only simple changes bet ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8ceac309083222731fc4e4a5bece004
https://doi.org/10.1029/2005gl023039
https://doi.org/10.1029/2005gl023039
Autor:
Robert Mulvaney, Teija Kekonen, John C. Moore, Veijo A. Pohjola, Elisabeth Isaksson, Paavo Perämäki, Roderick S.W. van de Wal
Publikováno v:
Journal of Geophysical Research. 110
We present a high-resolution record of water-soluble ion chemistry from a 121 m ice core spanning about 800 years. The core is well dated to 2/3 depth using cycle counting and reference horizons and a simple but close fitting model for the lower 1/3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e2a449ea20aefb917ffa2ede4a00436
https://doi.org/10.1029/2004jd005223
https://doi.org/10.1029/2004jd005223
Publikováno v:
Journal of environmental monitoring : JEM. 6(2)
The anions chloride, sulfate and nitrate in nearly 500 pairs of ice core samples from the same depth were determined in a 121 m long ice core from Svalbard. The analyses were performed separately using an ion chromatograph with Dionex AS9 and AS15 co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1ba97d134f02a4985e1481c2f18853f
https://pubmed.ncbi.nlm.nih.gov/14760459
https://pubmed.ncbi.nlm.nih.gov/14760459