Increased barium levels in recent marine sediments from the Norwegian and Barents Seas suggest impact of hydrocarbon drilling and production
Barium (Ba) in recent marine sediments can originate from natural and anthropogenic sources including discharges from the oil and gas industry. In this study, we use data from the Norwegian and Barents Seas to assess whether Ba in recent marine sediments has increased due to these discharges. To acc...
Published in: | Marine Pollution Bulletin |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/3092073 https://doi.org/10.1016/j.marpolbul.2022.114478 |
id |
ftimr:oai:imr.brage.unit.no:11250/3092073 |
---|---|
record_format |
openpolar |
spelling |
ftimr:oai:imr.brage.unit.no:11250/3092073 2023-10-25T01:37:04+02:00 Increased barium levels in recent marine sediments from the Norwegian and Barents Seas suggest impact of hydrocarbon drilling and production Haanes, Hallvard Jensen, Henning Lepland, Aivo Heldal, Hilde Elise 2023 application/pdf https://hdl.handle.net/11250/3092073 https://doi.org/10.1016/j.marpolbul.2022.114478 eng eng Marine Pollution Bulletin. 2023, 186 . urn:issn:0025-326X https://hdl.handle.net/11250/3092073 https://doi.org/10.1016/j.marpolbul.2022.114478 cristin:2131759 19 186 Marine Pollution Bulletin Peer reviewed Journal article 2023 ftimr https://doi.org/10.1016/j.marpolbul.2022.114478 2023-09-27T22:47:14Z Barium (Ba) in recent marine sediments can originate from natural and anthropogenic sources including discharges from the oil and gas industry. In this study, we use data from the Norwegian and Barents Seas to assess whether Ba in recent marine sediments has increased due to these discharges. To account for Ba in detrital material, we normalise all samples with respect to aluminosilicate by calculating an enrichment factor. We use statistical modelling to control for parameters related to sedimentation. We present results that suggest increased Ba levels in recent sediments that coincide with the timing of hydrocarbon drilling and production. This is supported by geographical differences on a large scale that relate to proximity to hydrocarbon drilling and production. Among 243 sampling stations, we identify 73 locations exhibiting enrichment of Ba in the upper 6 of sediment. At these locations, Ba is 1.55 to 3.55 times higher than the levels that can be expected from the shale average when Ba in detrital matter is accounted for. Excess Ba is reported in sediment surface samples in areas important to fisheries like the Lofoten area and the western Barents Sea. publishedVersion Article in Journal/Newspaper Barents Sea Lofoten Institute for Marine Research: Brage IMR Barents Sea Lofoten Marine Pollution Bulletin 186 114478 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
Barium (Ba) in recent marine sediments can originate from natural and anthropogenic sources including discharges from the oil and gas industry. In this study, we use data from the Norwegian and Barents Seas to assess whether Ba in recent marine sediments has increased due to these discharges. To account for Ba in detrital material, we normalise all samples with respect to aluminosilicate by calculating an enrichment factor. We use statistical modelling to control for parameters related to sedimentation. We present results that suggest increased Ba levels in recent sediments that coincide with the timing of hydrocarbon drilling and production. This is supported by geographical differences on a large scale that relate to proximity to hydrocarbon drilling and production. Among 243 sampling stations, we identify 73 locations exhibiting enrichment of Ba in the upper 6 of sediment. At these locations, Ba is 1.55 to 3.55 times higher than the levels that can be expected from the shale average when Ba in detrital matter is accounted for. Excess Ba is reported in sediment surface samples in areas important to fisheries like the Lofoten area and the western Barents Sea. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Haanes, Hallvard Jensen, Henning Lepland, Aivo Heldal, Hilde Elise |
spellingShingle |
Haanes, Hallvard Jensen, Henning Lepland, Aivo Heldal, Hilde Elise Increased barium levels in recent marine sediments from the Norwegian and Barents Seas suggest impact of hydrocarbon drilling and production |
author_facet |
Haanes, Hallvard Jensen, Henning Lepland, Aivo Heldal, Hilde Elise |
author_sort |
Haanes, Hallvard |
title |
Increased barium levels in recent marine sediments from the Norwegian and Barents Seas suggest impact of hydrocarbon drilling and production |
title_short |
Increased barium levels in recent marine sediments from the Norwegian and Barents Seas suggest impact of hydrocarbon drilling and production |
title_full |
Increased barium levels in recent marine sediments from the Norwegian and Barents Seas suggest impact of hydrocarbon drilling and production |
title_fullStr |
Increased barium levels in recent marine sediments from the Norwegian and Barents Seas suggest impact of hydrocarbon drilling and production |
title_full_unstemmed |
Increased barium levels in recent marine sediments from the Norwegian and Barents Seas suggest impact of hydrocarbon drilling and production |
title_sort |
increased barium levels in recent marine sediments from the norwegian and barents seas suggest impact of hydrocarbon drilling and production |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3092073 https://doi.org/10.1016/j.marpolbul.2022.114478 |
geographic |
Barents Sea Lofoten |
geographic_facet |
Barents Sea Lofoten |
genre |
Barents Sea Lofoten |
genre_facet |
Barents Sea Lofoten |
op_source |
19 186 Marine Pollution Bulletin |
op_relation |
Marine Pollution Bulletin. 2023, 186 . urn:issn:0025-326X https://hdl.handle.net/11250/3092073 https://doi.org/10.1016/j.marpolbul.2022.114478 cristin:2131759 |
op_doi |
https://doi.org/10.1016/j.marpolbul.2022.114478 |
container_title |
Marine Pollution Bulletin |
container_volume |
186 |
container_start_page |
114478 |
_version_ |
1780732033000013824 |