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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Copernicus Publications
2015
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Online Access: | https://epic.awi.de/id/eprint/37164/ https://epic.awi.de/id/eprint/37164/1/Fedorova_et_al_2015_BG.pdf http://www.biogeosciences.net/12/345/2015/bg-12-345-2015.html https://hdl.handle.net/10013/epic.44870 https://hdl.handle.net/10013/epic.44870.d001 |
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ftawi:oai:epic.awi.de:37164 2024-09-15T18:17:41+00:00 Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations Fedorova, I. Chetverova, A. Bolshiyanov, D. Makarov, A. Boike, Julia Heim, Birgit Morgenstern, Anne Overduin, Paul P. Wegner, C. Kashina, V. Eulenburg, Antje Dobrotina, E. Sidorina, I. 2015-01-19 application/pdf https://epic.awi.de/id/eprint/37164/ https://epic.awi.de/id/eprint/37164/1/Fedorova_et_al_2015_BG.pdf http://www.biogeosciences.net/12/345/2015/bg-12-345-2015.html https://hdl.handle.net/10013/epic.44870 https://hdl.handle.net/10013/epic.44870.d001 unknown Copernicus Publications https://epic.awi.de/id/eprint/37164/1/Fedorova_et_al_2015_BG.pdf https://hdl.handle.net/10013/epic.44870.d001 Fedorova, I. , Chetverova, A. , Bolshiyanov, D. , Makarov, A. , Boike, J. orcid:0000-0002-5875-2112 , Heim, B. orcid:0000-0003-2614-9391 , Morgenstern, A. orcid:0000-0002-6466-7571 , Overduin, P. P. orcid:0000-0001-9849-4712 , Wegner, C. , Kashina, V. , Eulenburg, A. , Dobrotina, E. and Sidorina, I. (2015) Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations , Biogeosciences, 12 (2), pp. 345-363 . doi:10.5194/bg-12-345-2015 <https://doi.org/10.5194/bg-12-345-2015> , hdl:10013/epic.44870 EPIC3Biogeosciences, Copernicus Publications, 12(2), pp. 345-363, ISSN: 1726-4189 Article isiRev 2015 ftawi https://doi.org/10.5194/bg-12-345-2015 2024-06-24T04:11:05Z 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 lena delta lena river Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Biogeosciences 12 2 345 363 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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 |
Fedorova, I. Chetverova, A. Bolshiyanov, D. Makarov, A. Boike, Julia Heim, Birgit Morgenstern, Anne Overduin, Paul P. Wegner, C. Kashina, V. Eulenburg, Antje Dobrotina, E. Sidorina, I. |
spellingShingle |
Fedorova, I. Chetverova, A. Bolshiyanov, D. Makarov, A. Boike, Julia Heim, Birgit Morgenstern, Anne Overduin, Paul P. Wegner, C. Kashina, V. Eulenburg, Antje Dobrotina, E. Sidorina, I. Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations |
author_facet |
Fedorova, I. Chetverova, A. Bolshiyanov, D. Makarov, A. Boike, Julia Heim, Birgit Morgenstern, Anne Overduin, Paul P. Wegner, C. Kashina, V. Eulenburg, Antje Dobrotina, E. Sidorina, I. |
author_sort |
Fedorova, I. |
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://epic.awi.de/id/eprint/37164/ https://epic.awi.de/id/eprint/37164/1/Fedorova_et_al_2015_BG.pdf http://www.biogeosciences.net/12/345/2015/bg-12-345-2015.html https://hdl.handle.net/10013/epic.44870 https://hdl.handle.net/10013/epic.44870.d001 |
genre |
lena delta lena river |
genre_facet |
lena delta lena river |
op_source |
EPIC3Biogeosciences, Copernicus Publications, 12(2), pp. 345-363, ISSN: 1726-4189 |
op_relation |
https://epic.awi.de/id/eprint/37164/1/Fedorova_et_al_2015_BG.pdf https://hdl.handle.net/10013/epic.44870.d001 Fedorova, I. , Chetverova, A. , Bolshiyanov, D. , Makarov, A. , Boike, J. orcid:0000-0002-5875-2112 , Heim, B. orcid:0000-0003-2614-9391 , Morgenstern, A. orcid:0000-0002-6466-7571 , Overduin, P. P. orcid:0000-0001-9849-4712 , Wegner, C. , Kashina, V. , Eulenburg, A. , Dobrotina, E. and Sidorina, I. (2015) Lena Delta hydrology and geochemistry: long-term hydrological data and recent field observations , Biogeosciences, 12 (2), pp. 345-363 . doi:10.5194/bg-12-345-2015 <https://doi.org/10.5194/bg-12-345-2015> , hdl:10013/epic.44870 |
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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1810455762859720704 |