Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations
The Lena River forms one of the largest deltas in the Arctic. We compare two sets of data to reveal new insights into the hydrological, hydrochemical, and geochemical processes within the delta: (i) long-term hydrometric observations at the Khabarova station at the head of the delta from 1951 to 200...
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ftdoajarticles:oai:doaj.org/article:81a252b1e081432b9f9941d0dc34a37f 2023-05-15T15:07:30+02:00 Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations I. Fedorova A. Chetverova D. Bolshiyanov A. Makarov J. Boike B. Heim A. Morgenstern P. P. Overduin C. Wegner V. Kashina A. Eulenburg E. Dobrotina I. Sidorina 2015-01-01T00:00:00Z https://doi.org/10.5194/bg-12-345-2015 https://doaj.org/article/81a252b1e081432b9f9941d0dc34a37f EN eng Copernicus Publications http://www.biogeosciences.net/12/345/2015/bg-12-345-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-345-2015 https://doaj.org/article/81a252b1e081432b9f9941d0dc34a37f Biogeosciences, Vol 12, Iss 2, Pp 345-363 (2015) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.5194/bg-12-345-2015 2022-12-31T09:33:46Z The Lena River forms one of the largest deltas in the Arctic. We compare two sets of data to reveal new insights into the hydrological, hydrochemical, and geochemical processes within the delta: (i) long-term hydrometric observations at the Khabarova station at the head of the delta from 1951 to 2005; (ii) field hydrological and geochemical observations carried out within the delta since 2002. Periods with differing relative discharge and intensity of fluvial processes were identified from the long-term record of water and sediment discharge. Ice events during spring melt (high water) reconfigured branch channels and probably influenced sediment transport within the delta. Based on summer field measurements during 2005–2012 of discharge and sediment fluxes along main delta channels, both are increased between the apex and the front of the delta. This increase is to a great extent connected with an additional influx of water from tributaries, as well as an increase of suspended and dissolved material released from the ice complex. Summer concentrations of major ion and biogenic substances along the delta branches are partly explained by water sources within the delta, such as thawing ice complex waters, small Lena River branches and estuarine areas. Article in Journal/Newspaper Arctic lena delta lena river Directory of Open Access Journals: DOAJ Articles Arctic Biogeosciences 12 2 345 363 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 I. Fedorova A. Chetverova D. Bolshiyanov A. Makarov J. Boike B. Heim A. Morgenstern P. P. Overduin C. Wegner V. Kashina A. Eulenburg E. Dobrotina I. Sidorina Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
The Lena River forms one of the largest deltas in the Arctic. We compare two sets of data to reveal new insights into the hydrological, hydrochemical, and geochemical processes within the delta: (i) long-term hydrometric observations at the Khabarova station at the head of the delta from 1951 to 2005; (ii) field hydrological and geochemical observations carried out within the delta since 2002. Periods with differing relative discharge and intensity of fluvial processes were identified from the long-term record of water and sediment discharge. Ice events during spring melt (high water) reconfigured branch channels and probably influenced sediment transport within the delta. Based on summer field measurements during 2005–2012 of discharge and sediment fluxes along main delta channels, both are increased between the apex and the front of the delta. This increase is to a great extent connected with an additional influx of water from tributaries, as well as an increase of suspended and dissolved material released from the ice complex. Summer concentrations of major ion and biogenic substances along the delta branches are partly explained by water sources within the delta, such as thawing ice complex waters, small Lena River branches and estuarine areas. |
format |
Article in Journal/Newspaper |
author |
I. Fedorova A. Chetverova D. Bolshiyanov A. Makarov J. Boike B. Heim A. Morgenstern P. P. Overduin C. Wegner V. Kashina A. Eulenburg E. Dobrotina I. Sidorina |
author_facet |
I. Fedorova A. Chetverova D. Bolshiyanov A. Makarov J. Boike B. Heim A. Morgenstern P. P. Overduin C. Wegner V. Kashina A. Eulenburg E. Dobrotina I. Sidorina |
author_sort |
I. Fedorova |
title |
Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations |
title_short |
Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations |
title_full |
Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations |
title_fullStr |
Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations |
title_full_unstemmed |
Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations |
title_sort |
lena delta hydrology and geochemistry: long-term hydrological data and recent field observations |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/bg-12-345-2015 https://doaj.org/article/81a252b1e081432b9f9941d0dc34a37f |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic lena delta lena river |
genre_facet |
Arctic lena delta lena river |
op_source |
Biogeosciences, Vol 12, Iss 2, Pp 345-363 (2015) |
op_relation |
http://www.biogeosciences.net/12/345/2015/bg-12-345-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-345-2015 https://doaj.org/article/81a252b1e081432b9f9941d0dc34a37f |
op_doi |
https://doi.org/10.5194/bg-12-345-2015 |
container_title |
Biogeosciences |
container_volume |
12 |
container_issue |
2 |
container_start_page |
345 |
op_container_end_page |
363 |
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1766338993029382144 |