Impact and implications of meltwater percolation on trace element records observed in a high-Alpine ice core
Past atmospheric pollution can be reconstructed from ice core trace element records retrieved from mountain glaciers. However, the current global temperature increase can result in post-depositional melt processes, significantly altering the originally stored information. Here, we present a comprehe...
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ftdoajarticles:oai:doaj.org/article:6c22729a9e9d434295a25385a700f866 2023-05-15T16:38:44+02:00 Impact and implications of meltwater percolation on trace element records observed in a high-Alpine ice core SVEN ERIK AVAK MARGIT SCHWIKOWSKI ANJA EICHLER 2018-12-01T00:00:00Z https://doi.org/10.1017/jog.2018.74 https://doaj.org/article/6c22729a9e9d434295a25385a700f866 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143018000746/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2018.74 0022-1430 1727-5652 https://doaj.org/article/6c22729a9e9d434295a25385a700f866 Journal of Glaciology, Vol 64, Pp 877-886 (2018) climate change ice chemistry ice core mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2018 ftdoajarticles https://doi.org/10.1017/jog.2018.74 2023-03-12T01:30:59Z Past atmospheric pollution can be reconstructed from ice core trace element records retrieved from mountain glaciers. However, the current global temperature increase can result in post-depositional melt processes, significantly altering the originally stored information. Here, we present a comprehensive study on the behaviour of 35 trace elements (TEs) during meltwater percolation in a high-Alpine ice core segment from upper Grenzgletscher, Switzerland. Some TEs revealed significant concentration depletion, whereas others were well preserved depending on their water solubility and location at the grain scale. TEs present in insoluble minerals, typically enriched at grain boundaries, were found to be mostly preserved because their insolubility in water results in immobility with meltwater percolation. Water-soluble TEs revealed a variable meltwater-mobility. Whereas ultra-TEs tend to be preserved, likely due to incorporation into the ice lattice, abundant TEs are prone to relocation from grain-boundary regions. We propose that at Alpine sites, Ag, Al, Bi, Cu, Cs, Fe, Li, Mo, Pb, Rb, Sb, Th, Tl, U, V, W, Zr and the rare-earth elements may still be applicable as robust environmental proxies even if partial melting occurred, whereas Ba, Ca, Cd Co, Mg, Mn, Na, Ni, Sr and Zn are prone to significant depletion. Article in Journal/Newspaper ice core Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Core Mountain ENVELOPE(-127.187,-127.187,53.466,53.466) Journal of Glaciology 64 248 877 886 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
climate change ice chemistry ice core mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
climate change ice chemistry ice core mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 SVEN ERIK AVAK MARGIT SCHWIKOWSKI ANJA EICHLER Impact and implications of meltwater percolation on trace element records observed in a high-Alpine ice core |
topic_facet |
climate change ice chemistry ice core mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Past atmospheric pollution can be reconstructed from ice core trace element records retrieved from mountain glaciers. However, the current global temperature increase can result in post-depositional melt processes, significantly altering the originally stored information. Here, we present a comprehensive study on the behaviour of 35 trace elements (TEs) during meltwater percolation in a high-Alpine ice core segment from upper Grenzgletscher, Switzerland. Some TEs revealed significant concentration depletion, whereas others were well preserved depending on their water solubility and location at the grain scale. TEs present in insoluble minerals, typically enriched at grain boundaries, were found to be mostly preserved because their insolubility in water results in immobility with meltwater percolation. Water-soluble TEs revealed a variable meltwater-mobility. Whereas ultra-TEs tend to be preserved, likely due to incorporation into the ice lattice, abundant TEs are prone to relocation from grain-boundary regions. We propose that at Alpine sites, Ag, Al, Bi, Cu, Cs, Fe, Li, Mo, Pb, Rb, Sb, Th, Tl, U, V, W, Zr and the rare-earth elements may still be applicable as robust environmental proxies even if partial melting occurred, whereas Ba, Ca, Cd Co, Mg, Mn, Na, Ni, Sr and Zn are prone to significant depletion. |
format |
Article in Journal/Newspaper |
author |
SVEN ERIK AVAK MARGIT SCHWIKOWSKI ANJA EICHLER |
author_facet |
SVEN ERIK AVAK MARGIT SCHWIKOWSKI ANJA EICHLER |
author_sort |
SVEN ERIK AVAK |
title |
Impact and implications of meltwater percolation on trace element records observed in a high-Alpine ice core |
title_short |
Impact and implications of meltwater percolation on trace element records observed in a high-Alpine ice core |
title_full |
Impact and implications of meltwater percolation on trace element records observed in a high-Alpine ice core |
title_fullStr |
Impact and implications of meltwater percolation on trace element records observed in a high-Alpine ice core |
title_full_unstemmed |
Impact and implications of meltwater percolation on trace element records observed in a high-Alpine ice core |
title_sort |
impact and implications of meltwater percolation on trace element records observed in a high-alpine ice core |
publisher |
Cambridge University Press |
publishDate |
2018 |
url |
https://doi.org/10.1017/jog.2018.74 https://doaj.org/article/6c22729a9e9d434295a25385a700f866 |
long_lat |
ENVELOPE(-127.187,-127.187,53.466,53.466) |
geographic |
Core Mountain |
geographic_facet |
Core Mountain |
genre |
ice core Journal of Glaciology |
genre_facet |
ice core Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 64, Pp 877-886 (2018) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143018000746/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2018.74 0022-1430 1727-5652 https://doaj.org/article/6c22729a9e9d434295a25385a700f866 |
op_doi |
https://doi.org/10.1017/jog.2018.74 |
container_title |
Journal of Glaciology |
container_volume |
64 |
container_issue |
248 |
container_start_page |
877 |
op_container_end_page |
886 |
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1766029053678059520 |