Late Holocene Sedimentation and Environmental Change Record in Billefjorden, Svalbard
The Late Holocene sedimentation in Billefjorden (Svalbard) was studied through investigations of modern sedimentation conditions and their effects recorded in sediments. Sedimentation in the fjord is dominated by settling from surface turbid water plumes originating from rivers and subglacial outflo...
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Online Access: | https://hdl.handle.net/10593/27355 https://doi.org/10.13140/RG.2.2.18687.38564 |
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ftmickiewiczuni:oai:repozytorium.amu.edu.pl:10593/27355 2023-09-26T15:15:31+02:00 Late Holocene Sedimentation and Environmental Change Record in Billefjorden, Svalbard Późnoholoceńska sedymentacja i zapis zmian środowiskowych w osadach Billefjorden, Svalbard Szczuciński, Witold Lorenc, Stanisław 2004 application/pdf https://hdl.handle.net/10593/27355 https://doi.org/10.13140/RG.2.2.18687.38564 en eng doi:10.13140/RG.2.2.18687.38564 https://hdl.handle.net/10593/27355 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Spitsbergen Svalbard Billefjorden Petuniabukta Adolfsbukta Nordenskioldbreen Fjord Sediments Marine sediments Fjord sediments Sediment geochemistry Arctic Pyramiden Sedimentation Glacimarine sedimentation Meltwater river Glacial bay Glaciers Glaciomarine Sediment provenance Sediment traps Sedimentation rate Sediment accumulation rate Flocculation Hydrography Oceanography particulate matter flux seasonal changes suspended sediment suspended particulate matter sediment cores Holocene dating radiocarbon 210Pb 137Cs accumulation rate ice rafted debris coal anthropogenic impact environmental changes XRD tidewater glacier tidal flat sedimentary record mud grain size REE lead-210 caesium-137 info:eu-repo/semantics/doctoralThesis 2004 ftmickiewiczuni https://doi.org/10.13140/RG.2.2.18687.38564 2023-08-28T23:06:05Z The Late Holocene sedimentation in Billefjorden (Svalbard) was studied through investigations of modern sedimentation conditions and their effects recorded in sediments. Sedimentation in the fjord is dominated by settling from surface turbid water plumes originating from rivers and subglacial outflows of tidewater glacier. Sedimentation is confined to the summer season (July - August) and is largely influenced by flocculation. It results in high particulate matter fluxes (up to 100 g m-2 day-1), poorly sorted sediments, and trapping of most of the sediments in the proximal few hundred meters (in case of rivers ending on tidal flats – flocculation occurs on tidal flat) to a couple of km in the case of tidewater glacier (flocculation happens after reaching the fjord waters). In the fall season, sedimentation rates are much smaller – mainly due to a smaller sediment supply but also in the effect of a largely diminished flocculation process. The latter one was found to be controlled primarily by the mixing of fresh and saline waters (so by freshwater inflow) and not by SPM concentrations. Sediment accumulation rates decrease exponentially from the source with more than 4 cm per year in the proximal settings to about 0.1 cm y-1 in the central basin. Sedimentation from icebergs has at least one order of magnitude lower rates. Fjord bottom sediments are mostly muds with bimodal grain size distribution (due to at least two sedimentation processes: suspension settling and iceberg rafting). Differences in their chemical (major, trace elements, and REE) mineralogical and coarse grain fraction composition are small but distinct. The deposits can be divided into regions supplied by local sources (e.g. Adolfbukta, Petuniabukta, Mimerbukta, central basin, entrance sill), supporting the conclusion of sediment trapping in proximal settings. The influence of rafted sediments is visible – especially in central basin sediments because the bulk of them is supplied from catchments of different geology. In the studied cores, early ... Doctoral or Postdoctoral Thesis Arctic Billefjorden glacier Iceberg* Pyramiden Pyramiden Svalbard Tidewater Spitsbergen AMUR - Adam Mickiewicz University Repository, Poznan Arctic Svalbard Billefjorden ENVELOPE(16.417,16.417,78.563,78.563) Petuniabukta ENVELOPE(16.532,16.532,78.687,78.687) Pyramiden ENVELOPE(-3.817,-3.817,-72.283,-72.283) Adolfbukta ENVELOPE(16.844,16.844,78.652,78.652) Mimerbukta ENVELOPE(16.393,16.393,78.640,78.640) Central Basin ENVELOPE(43.000,43.000,73.500,73.500) |
institution |
Open Polar |
collection |
AMUR - Adam Mickiewicz University Repository, Poznan |
op_collection_id |
ftmickiewiczuni |
language |
English |
topic |
Spitsbergen Svalbard Billefjorden Petuniabukta Adolfsbukta Nordenskioldbreen Fjord Sediments Marine sediments Fjord sediments Sediment geochemistry Arctic Pyramiden Sedimentation Glacimarine sedimentation Meltwater river Glacial bay Glaciers Glaciomarine Sediment provenance Sediment traps Sedimentation rate Sediment accumulation rate Flocculation Hydrography Oceanography particulate matter flux seasonal changes suspended sediment suspended particulate matter sediment cores Holocene dating radiocarbon 210Pb 137Cs accumulation rate ice rafted debris coal anthropogenic impact environmental changes XRD tidewater glacier tidal flat sedimentary record mud grain size REE lead-210 caesium-137 |
spellingShingle |
Spitsbergen Svalbard Billefjorden Petuniabukta Adolfsbukta Nordenskioldbreen Fjord Sediments Marine sediments Fjord sediments Sediment geochemistry Arctic Pyramiden Sedimentation Glacimarine sedimentation Meltwater river Glacial bay Glaciers Glaciomarine Sediment provenance Sediment traps Sedimentation rate Sediment accumulation rate Flocculation Hydrography Oceanography particulate matter flux seasonal changes suspended sediment suspended particulate matter sediment cores Holocene dating radiocarbon 210Pb 137Cs accumulation rate ice rafted debris coal anthropogenic impact environmental changes XRD tidewater glacier tidal flat sedimentary record mud grain size REE lead-210 caesium-137 Szczuciński, Witold Late Holocene Sedimentation and Environmental Change Record in Billefjorden, Svalbard |
topic_facet |
Spitsbergen Svalbard Billefjorden Petuniabukta Adolfsbukta Nordenskioldbreen Fjord Sediments Marine sediments Fjord sediments Sediment geochemistry Arctic Pyramiden Sedimentation Glacimarine sedimentation Meltwater river Glacial bay Glaciers Glaciomarine Sediment provenance Sediment traps Sedimentation rate Sediment accumulation rate Flocculation Hydrography Oceanography particulate matter flux seasonal changes suspended sediment suspended particulate matter sediment cores Holocene dating radiocarbon 210Pb 137Cs accumulation rate ice rafted debris coal anthropogenic impact environmental changes XRD tidewater glacier tidal flat sedimentary record mud grain size REE lead-210 caesium-137 |
description |
The Late Holocene sedimentation in Billefjorden (Svalbard) was studied through investigations of modern sedimentation conditions and their effects recorded in sediments. Sedimentation in the fjord is dominated by settling from surface turbid water plumes originating from rivers and subglacial outflows of tidewater glacier. Sedimentation is confined to the summer season (July - August) and is largely influenced by flocculation. It results in high particulate matter fluxes (up to 100 g m-2 day-1), poorly sorted sediments, and trapping of most of the sediments in the proximal few hundred meters (in case of rivers ending on tidal flats – flocculation occurs on tidal flat) to a couple of km in the case of tidewater glacier (flocculation happens after reaching the fjord waters). In the fall season, sedimentation rates are much smaller – mainly due to a smaller sediment supply but also in the effect of a largely diminished flocculation process. The latter one was found to be controlled primarily by the mixing of fresh and saline waters (so by freshwater inflow) and not by SPM concentrations. Sediment accumulation rates decrease exponentially from the source with more than 4 cm per year in the proximal settings to about 0.1 cm y-1 in the central basin. Sedimentation from icebergs has at least one order of magnitude lower rates. Fjord bottom sediments are mostly muds with bimodal grain size distribution (due to at least two sedimentation processes: suspension settling and iceberg rafting). Differences in their chemical (major, trace elements, and REE) mineralogical and coarse grain fraction composition are small but distinct. The deposits can be divided into regions supplied by local sources (e.g. Adolfbukta, Petuniabukta, Mimerbukta, central basin, entrance sill), supporting the conclusion of sediment trapping in proximal settings. The influence of rafted sediments is visible – especially in central basin sediments because the bulk of them is supplied from catchments of different geology. In the studied cores, early ... |
author2 |
Lorenc, Stanisław |
format |
Doctoral or Postdoctoral Thesis |
author |
Szczuciński, Witold |
author_facet |
Szczuciński, Witold |
author_sort |
Szczuciński, Witold |
title |
Late Holocene Sedimentation and Environmental Change Record in Billefjorden, Svalbard |
title_short |
Late Holocene Sedimentation and Environmental Change Record in Billefjorden, Svalbard |
title_full |
Late Holocene Sedimentation and Environmental Change Record in Billefjorden, Svalbard |
title_fullStr |
Late Holocene Sedimentation and Environmental Change Record in Billefjorden, Svalbard |
title_full_unstemmed |
Late Holocene Sedimentation and Environmental Change Record in Billefjorden, Svalbard |
title_sort |
late holocene sedimentation and environmental change record in billefjorden, svalbard |
publishDate |
2004 |
url |
https://hdl.handle.net/10593/27355 https://doi.org/10.13140/RG.2.2.18687.38564 |
long_lat |
ENVELOPE(16.417,16.417,78.563,78.563) ENVELOPE(16.532,16.532,78.687,78.687) ENVELOPE(-3.817,-3.817,-72.283,-72.283) ENVELOPE(16.844,16.844,78.652,78.652) ENVELOPE(16.393,16.393,78.640,78.640) ENVELOPE(43.000,43.000,73.500,73.500) |
geographic |
Arctic Svalbard Billefjorden Petuniabukta Pyramiden Adolfbukta Mimerbukta Central Basin |
geographic_facet |
Arctic Svalbard Billefjorden Petuniabukta Pyramiden Adolfbukta Mimerbukta Central Basin |
genre |
Arctic Billefjorden glacier Iceberg* Pyramiden Pyramiden Svalbard Tidewater Spitsbergen |
genre_facet |
Arctic Billefjorden glacier Iceberg* Pyramiden Pyramiden Svalbard Tidewater Spitsbergen |
op_relation |
doi:10.13140/RG.2.2.18687.38564 https://hdl.handle.net/10593/27355 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.13140/RG.2.2.18687.38564 |
_version_ |
1778136477729816576 |