Peculiarities of Pore Water Ionic Composition in the Bottom Sediments and Subsea Permafrost: A Case Study in the Buor-Khaya Bay
This paper emphasises an ionic composition of the pore water of bottom sediments and subsea permafrost as an indicator of salinization of the thawed strata. Based on measurements of concentration of sodium (Na + ), potassium (K + ), calcium (Ca 2+ ), and magnesium (Mg 2+ ) cations, chlorides (Cl – )...
Published in: | Geosciences |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2022
|
Subjects: | |
Online Access: | https://doi.org/10.3390/geosciences12020049 https://doaj.org/article/dbabf05d2746499989301bbf9621e689 |
id |
ftdoajarticles:oai:doaj.org/article:dbabf05d2746499989301bbf9621e689 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:dbabf05d2746499989301bbf9621e689 2023-05-15T15:09:04+02:00 Peculiarities of Pore Water Ionic Composition in the Bottom Sediments and Subsea Permafrost: A Case Study in the Buor-Khaya Bay Alexander Ulyantsev Natalya Polyakova Ivan Trukhin Yulia Parotkina Oleg Dudarev Igor Semiletov 2022-01-01T00:00:00Z https://doi.org/10.3390/geosciences12020049 https://doaj.org/article/dbabf05d2746499989301bbf9621e689 EN eng MDPI AG https://www.mdpi.com/2076-3263/12/2/49 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences12020049 2076-3263 https://doaj.org/article/dbabf05d2746499989301bbf9621e689 Geosciences, Vol 12, Iss 49, p 49 (2022) arctic shelf bottom sediments subsea permafrost drilling cores pore water ionic composition Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.3390/geosciences12020049 2022-12-31T16:01:54Z This paper emphasises an ionic composition of the pore water of bottom sediments and subsea permafrost as an indicator of salinization of the thawed strata. Based on measurements of concentration of sodium (Na + ), potassium (K + ), calcium (Ca 2+ ), and magnesium (Mg 2+ ) cations, chlorides (Cl – ) and sulphates (SO 4 2– ) in water extracts from bottom sediments and subsea permafrost deposits from three boreholes, a spatial difference in salinization of thawed strata within the Buor-Khaya Bay was shown. The vertical pattern of the macroions in the unfrozen segment was formed under subsea thawing of permafrost. The frozen strata contain fresh pore water and have been evolving under downward penetration of salt and subsequent thawing of subsea permafrost. Based on the analyses of thawed deposits, it was shown that the maximum pore water salinity was observed in the horizons enriched with sand and plant detritus. Over the boundary of subsea permafrost in the Ivashkina Lagoon, the pronounced total ion concentration (up to 50 g/L of Cl – ) of pore water was observed. This segment consists of moss debris, which is characterised by high porosity. The moss layer promotes the accumulation of dissolved pore water compounds and subsequent thawing of the frozen sediments. Article in Journal/Newspaper Arctic permafrost Directory of Open Access Journals: DOAJ Articles Arctic Khaya ENVELOPE(135.167,135.167,60.567,60.567) Buor-Khaya ENVELOPE(127.803,127.803,72.287,72.287) Geosciences 12 2 49 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic shelf bottom sediments subsea permafrost drilling cores pore water ionic composition Geology QE1-996.5 |
spellingShingle |
arctic shelf bottom sediments subsea permafrost drilling cores pore water ionic composition Geology QE1-996.5 Alexander Ulyantsev Natalya Polyakova Ivan Trukhin Yulia Parotkina Oleg Dudarev Igor Semiletov Peculiarities of Pore Water Ionic Composition in the Bottom Sediments and Subsea Permafrost: A Case Study in the Buor-Khaya Bay |
topic_facet |
arctic shelf bottom sediments subsea permafrost drilling cores pore water ionic composition Geology QE1-996.5 |
description |
This paper emphasises an ionic composition of the pore water of bottom sediments and subsea permafrost as an indicator of salinization of the thawed strata. Based on measurements of concentration of sodium (Na + ), potassium (K + ), calcium (Ca 2+ ), and magnesium (Mg 2+ ) cations, chlorides (Cl – ) and sulphates (SO 4 2– ) in water extracts from bottom sediments and subsea permafrost deposits from three boreholes, a spatial difference in salinization of thawed strata within the Buor-Khaya Bay was shown. The vertical pattern of the macroions in the unfrozen segment was formed under subsea thawing of permafrost. The frozen strata contain fresh pore water and have been evolving under downward penetration of salt and subsequent thawing of subsea permafrost. Based on the analyses of thawed deposits, it was shown that the maximum pore water salinity was observed in the horizons enriched with sand and plant detritus. Over the boundary of subsea permafrost in the Ivashkina Lagoon, the pronounced total ion concentration (up to 50 g/L of Cl – ) of pore water was observed. This segment consists of moss debris, which is characterised by high porosity. The moss layer promotes the accumulation of dissolved pore water compounds and subsequent thawing of the frozen sediments. |
format |
Article in Journal/Newspaper |
author |
Alexander Ulyantsev Natalya Polyakova Ivan Trukhin Yulia Parotkina Oleg Dudarev Igor Semiletov |
author_facet |
Alexander Ulyantsev Natalya Polyakova Ivan Trukhin Yulia Parotkina Oleg Dudarev Igor Semiletov |
author_sort |
Alexander Ulyantsev |
title |
Peculiarities of Pore Water Ionic Composition in the Bottom Sediments and Subsea Permafrost: A Case Study in the Buor-Khaya Bay |
title_short |
Peculiarities of Pore Water Ionic Composition in the Bottom Sediments and Subsea Permafrost: A Case Study in the Buor-Khaya Bay |
title_full |
Peculiarities of Pore Water Ionic Composition in the Bottom Sediments and Subsea Permafrost: A Case Study in the Buor-Khaya Bay |
title_fullStr |
Peculiarities of Pore Water Ionic Composition in the Bottom Sediments and Subsea Permafrost: A Case Study in the Buor-Khaya Bay |
title_full_unstemmed |
Peculiarities of Pore Water Ionic Composition in the Bottom Sediments and Subsea Permafrost: A Case Study in the Buor-Khaya Bay |
title_sort |
peculiarities of pore water ionic composition in the bottom sediments and subsea permafrost: a case study in the buor-khaya bay |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/geosciences12020049 https://doaj.org/article/dbabf05d2746499989301bbf9621e689 |
long_lat |
ENVELOPE(135.167,135.167,60.567,60.567) ENVELOPE(127.803,127.803,72.287,72.287) |
geographic |
Arctic Khaya Buor-Khaya |
geographic_facet |
Arctic Khaya Buor-Khaya |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
Geosciences, Vol 12, Iss 49, p 49 (2022) |
op_relation |
https://www.mdpi.com/2076-3263/12/2/49 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences12020049 2076-3263 https://doaj.org/article/dbabf05d2746499989301bbf9621e689 |
op_doi |
https://doi.org/10.3390/geosciences12020049 |
container_title |
Geosciences |
container_volume |
12 |
container_issue |
2 |
container_start_page |
49 |
_version_ |
1766340307341803520 |