Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007
We investigate the freshwater composition of the shelf and slope of the Arctic Ocean north of the New Siberian Islands using geochemical tracer data (delta O-18, Ba, and PO4*) collected following the extreme summer of 2007. We find that the anomalous wind patterns that partly explained the sea ice m...
Main Authors: | , , , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
AMER GEOPHYSICAL UNION
2009
|
Subjects: | |
Online Access: | https://discovery.ucl.ac.uk/id/eprint/1338060/1/2009GL037341.pdf https://discovery.ucl.ac.uk/id/eprint/1338060/ |
id |
ftucl:oai:eprints.ucl.ac.uk.OAI2:1338060 |
---|---|
record_format |
openpolar |
spelling |
ftucl:oai:eprints.ucl.ac.uk.OAI2:1338060 2023-12-24T10:13:26+01:00 Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007 Abrahamsen, EP Meredith, MP Falkner, KK Torres-Valdes, S Leng, MJ Alkire, MB Bacon, S Laxon, SW Polyakov, I Ivanov, V 2009-04-02 application/pdf https://discovery.ucl.ac.uk/id/eprint/1338060/1/2009GL037341.pdf https://discovery.ucl.ac.uk/id/eprint/1338060/ eng eng AMER GEOPHYSICAL UNION https://discovery.ucl.ac.uk/id/eprint/1338060/1/2009GL037341.pdf https://discovery.ucl.ac.uk/id/eprint/1338060/ open Geophysical Research Letters , 36 , Article L07602. (2009) DISSOLVED BARIUM RIVER-RUNOFF OCEAN HALOCLINE SEA TRANSPORT LAYER Article 2009 ftucl 2023-11-27T13:07:34Z We investigate the freshwater composition of the shelf and slope of the Arctic Ocean north of the New Siberian Islands using geochemical tracer data (delta O-18, Ba, and PO4*) collected following the extreme summer of 2007. We find that the anomalous wind patterns that partly explained the sea ice minimum at this time also led to significant quantities of Pacific-derived surface water in the westernmost part of the Makarov Basin. We also find larger quantities of meteoric water near Lomonosov Ridge than were found in 1995. Dissolved barium is depleted in the upper layers in one region of our study area, probably as a result of biological activity in open waters. Increasingly ice-free conditions compromise the quantitative use of barium as a tracer of river water in the Arctic Ocean. Citation: Abrahamsen, E. P., M. P. Meredith, K. K. Falkner, S. Torres-Valdes, M. J. Leng, M. B. Alkire, S. Bacon, S. W. Laxon, I. Polyakov, and V. Ivanov (2009), Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007, Geophys. Res. Lett., 36, L07602, doi:10.1029/2009GL037341. Article in Journal/Newspaper Arctic Arctic Ocean Lomonosov Ridge makarov basin New Siberian Islands Sea ice University College London: UCL Discovery Arctic Arctic Ocean Pacific Makarov Basin ENVELOPE(170.000,170.000,87.000,87.000) New Siberian Islands ENVELOPE(142.000,142.000,75.000,75.000) Meredith ENVELOPE(67.717,67.717,-71.200,-71.200) |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
DISSOLVED BARIUM RIVER-RUNOFF OCEAN HALOCLINE SEA TRANSPORT LAYER |
spellingShingle |
DISSOLVED BARIUM RIVER-RUNOFF OCEAN HALOCLINE SEA TRANSPORT LAYER Abrahamsen, EP Meredith, MP Falkner, KK Torres-Valdes, S Leng, MJ Alkire, MB Bacon, S Laxon, SW Polyakov, I Ivanov, V Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007 |
topic_facet |
DISSOLVED BARIUM RIVER-RUNOFF OCEAN HALOCLINE SEA TRANSPORT LAYER |
description |
We investigate the freshwater composition of the shelf and slope of the Arctic Ocean north of the New Siberian Islands using geochemical tracer data (delta O-18, Ba, and PO4*) collected following the extreme summer of 2007. We find that the anomalous wind patterns that partly explained the sea ice minimum at this time also led to significant quantities of Pacific-derived surface water in the westernmost part of the Makarov Basin. We also find larger quantities of meteoric water near Lomonosov Ridge than were found in 1995. Dissolved barium is depleted in the upper layers in one region of our study area, probably as a result of biological activity in open waters. Increasingly ice-free conditions compromise the quantitative use of barium as a tracer of river water in the Arctic Ocean. Citation: Abrahamsen, E. P., M. P. Meredith, K. K. Falkner, S. Torres-Valdes, M. J. Leng, M. B. Alkire, S. Bacon, S. W. Laxon, I. Polyakov, and V. Ivanov (2009), Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007, Geophys. Res. Lett., 36, L07602, doi:10.1029/2009GL037341. |
format |
Article in Journal/Newspaper |
author |
Abrahamsen, EP Meredith, MP Falkner, KK Torres-Valdes, S Leng, MJ Alkire, MB Bacon, S Laxon, SW Polyakov, I Ivanov, V |
author_facet |
Abrahamsen, EP Meredith, MP Falkner, KK Torres-Valdes, S Leng, MJ Alkire, MB Bacon, S Laxon, SW Polyakov, I Ivanov, V |
author_sort |
Abrahamsen, EP |
title |
Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007 |
title_short |
Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007 |
title_full |
Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007 |
title_fullStr |
Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007 |
title_full_unstemmed |
Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007 |
title_sort |
tracer-derived freshwater composition of the siberian continental shelf and slope following the extreme arctic summer of 2007 |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2009 |
url |
https://discovery.ucl.ac.uk/id/eprint/1338060/1/2009GL037341.pdf https://discovery.ucl.ac.uk/id/eprint/1338060/ |
long_lat |
ENVELOPE(170.000,170.000,87.000,87.000) ENVELOPE(142.000,142.000,75.000,75.000) ENVELOPE(67.717,67.717,-71.200,-71.200) |
geographic |
Arctic Arctic Ocean Pacific Makarov Basin New Siberian Islands Meredith |
geographic_facet |
Arctic Arctic Ocean Pacific Makarov Basin New Siberian Islands Meredith |
genre |
Arctic Arctic Ocean Lomonosov Ridge makarov basin New Siberian Islands Sea ice |
genre_facet |
Arctic Arctic Ocean Lomonosov Ridge makarov basin New Siberian Islands Sea ice |
op_source |
Geophysical Research Letters , 36 , Article L07602. (2009) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/1338060/1/2009GL037341.pdf https://discovery.ucl.ac.uk/id/eprint/1338060/ |
op_rights |
open |
_version_ |
1786182624026296320 |