Surface water changes during transit from North Pole to Fram Strait
Ice drift recorded by ice buoys show a relatively direct pathway of ice from the North Pole to Fram Strait. An ice tethered buoy deployed in 2015 during GEOTRACES section GN04 at 89°N was recovered in August 2016 at 76°43N in Fram Strait during GEOTRACES section GN05. Does the surface water follow a...
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ftawi:oai:epic.awi.de:50416 2023-05-15T16:03:47+02:00 Surface water changes during transit from North Pole to Fram Strait Rutgers van der Loeff, Michiel Casacuberta, Núria Wefing, Anne-Marie Laukert, Georgi Bauch, D. Paffrath, Ronja Provost, Christine Karcher, Michael Meyer, Hanno Schaffer, Janin Rabe, Benjamin 2019-08-22 https://epic.awi.de/id/eprint/50416/ https://hdl.handle.net/10013/epic.c9ffe526-069a-460c-a2b0-bf6e53bee67e unknown Rutgers van der Loeff, M. orcid:0000-0003-1393-3742 , Casacuberta, N. , Wefing, A. M. , Laukert, G. , Bauch, D. , Paffrath, R. , Provost, C. , Karcher, M. orcid:0000-0002-9587-811X , Meyer, H. orcid:0000-0003-4129-4706 , Schaffer, J. orcid:0000-0002-1395-7851 and Rabe, B. orcid:0000-0001-5794-9856 (2019) Surface water changes during transit from North Pole to Fram Strait , Goldschmidt Conference, Barcelona, 18 August 2019 - 23 August 2019 . hdl:10013/epic.c9ffe526-069a-460c-a2b0-bf6e53bee67e EPIC3Goldschmidt Conference, Barcelona, 2019-08-18-2019-08-23 Conference notRev 2019 ftawi 2021-12-24T15:45:01Z Ice drift recorded by ice buoys show a relatively direct pathway of ice from the North Pole to Fram Strait. An ice tethered buoy deployed in 2015 during GEOTRACES section GN04 at 89°N was recovered in August 2016 at 76°43N in Fram Strait during GEOTRACES section GN05. Does the surface water follow a similar pathway? Tracer data collected during these two expeditions are used to investigate to what extent the water in the East Greenland Current (EGC) can be considered a downstream extension of the Transpolar Drift (TPD) at the North Pole. The reduction of 228Ra activities and 129I/236U ratios in the EGC compared to the TPD can be explained either by a much longer (order 3-4 years) travel time than suggested by the ice drift, or by admixture of surface waters from other, presumably Pacific sources. The pathways followed by surface water in a coupled sea-ice-ocean model suggest that the transit of surface water is indeed much more erratic and time consuming than the transit of ice. We will discuss whether N/P ratios or Nd isotopes give evidence for a change in the contribution of Pacific waters. Conference Object East Greenland east greenland current Fram Strait Greenland North Pole Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Greenland North Pole Pacific |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Ice drift recorded by ice buoys show a relatively direct pathway of ice from the North Pole to Fram Strait. An ice tethered buoy deployed in 2015 during GEOTRACES section GN04 at 89°N was recovered in August 2016 at 76°43N in Fram Strait during GEOTRACES section GN05. Does the surface water follow a similar pathway? Tracer data collected during these two expeditions are used to investigate to what extent the water in the East Greenland Current (EGC) can be considered a downstream extension of the Transpolar Drift (TPD) at the North Pole. The reduction of 228Ra activities and 129I/236U ratios in the EGC compared to the TPD can be explained either by a much longer (order 3-4 years) travel time than suggested by the ice drift, or by admixture of surface waters from other, presumably Pacific sources. The pathways followed by surface water in a coupled sea-ice-ocean model suggest that the transit of surface water is indeed much more erratic and time consuming than the transit of ice. We will discuss whether N/P ratios or Nd isotopes give evidence for a change in the contribution of Pacific waters. |
format |
Conference Object |
author |
Rutgers van der Loeff, Michiel Casacuberta, Núria Wefing, Anne-Marie Laukert, Georgi Bauch, D. Paffrath, Ronja Provost, Christine Karcher, Michael Meyer, Hanno Schaffer, Janin Rabe, Benjamin |
spellingShingle |
Rutgers van der Loeff, Michiel Casacuberta, Núria Wefing, Anne-Marie Laukert, Georgi Bauch, D. Paffrath, Ronja Provost, Christine Karcher, Michael Meyer, Hanno Schaffer, Janin Rabe, Benjamin Surface water changes during transit from North Pole to Fram Strait |
author_facet |
Rutgers van der Loeff, Michiel Casacuberta, Núria Wefing, Anne-Marie Laukert, Georgi Bauch, D. Paffrath, Ronja Provost, Christine Karcher, Michael Meyer, Hanno Schaffer, Janin Rabe, Benjamin |
author_sort |
Rutgers van der Loeff, Michiel |
title |
Surface water changes during transit from North Pole to Fram Strait |
title_short |
Surface water changes during transit from North Pole to Fram Strait |
title_full |
Surface water changes during transit from North Pole to Fram Strait |
title_fullStr |
Surface water changes during transit from North Pole to Fram Strait |
title_full_unstemmed |
Surface water changes during transit from North Pole to Fram Strait |
title_sort |
surface water changes during transit from north pole to fram strait |
publishDate |
2019 |
url |
https://epic.awi.de/id/eprint/50416/ https://hdl.handle.net/10013/epic.c9ffe526-069a-460c-a2b0-bf6e53bee67e |
geographic |
Greenland North Pole Pacific |
geographic_facet |
Greenland North Pole Pacific |
genre |
East Greenland east greenland current Fram Strait Greenland North Pole Sea ice |
genre_facet |
East Greenland east greenland current Fram Strait Greenland North Pole Sea ice |
op_source |
EPIC3Goldschmidt Conference, Barcelona, 2019-08-18-2019-08-23 |
op_relation |
Rutgers van der Loeff, M. orcid:0000-0003-1393-3742 , Casacuberta, N. , Wefing, A. M. , Laukert, G. , Bauch, D. , Paffrath, R. , Provost, C. , Karcher, M. orcid:0000-0002-9587-811X , Meyer, H. orcid:0000-0003-4129-4706 , Schaffer, J. orcid:0000-0002-1395-7851 and Rabe, B. orcid:0000-0001-5794-9856 (2019) Surface water changes during transit from North Pole to Fram Strait , Goldschmidt Conference, Barcelona, 18 August 2019 - 23 August 2019 . hdl:10013/epic.c9ffe526-069a-460c-a2b0-bf6e53bee67e |
_version_ |
1766399479107289088 |