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Experiments by Invited Researchers

 

Internal wave dynamics in the marginal ice zone

Project acronym: HY+_HSVA‐08_UNI ST.ANDREWS
Name of Group Leader: Magda Carr
User-Project Title: Internal wave dynamics in the marginal ice zone
Facility: Arctic Environmental Test Basin (AETB)
Data Storage Report: Latest_DMP_2018_11_14_Rev01_AHa.pdf
Publications: POAC2019-Evers-et-al_2019-03-14.pdf
carr_hydralab_plus.pdf
Address to obtain the data: haase@hsva.de
magda.carr@newcastle.ac.uk
Associated DOI data sets: 10.5281/zenodo.2574579: HY+_HSVA‐08_UNI ST.ANDREWS - Data Storage Report and Data Set

Internal wave dynamics in the marginal ice zone

Project Ref: HY+_HSVA‐08_UNI ST.ANDREWS
Project Provider: HSVA
Project Facility: Arctic Environmental Test Basin (AETB)
Project Type: Waves In Ice 
Provider Contact: Dipl.-Ing. Andrea Haase
Project Leader: Dr Magda Carr
Project Users: Jarle Berntsen, Dipl.-Ing. Karl-Ulrich Evers, Ilker Fer, Dr Atle Jensen, Henrik Kalisch, Prof Emilian Parau, Peter Sutherland, Dr Oyvind Thiem

Project Pbjectives:

Oceanic internal waves (IWs) propagate along density interfaces and are ubiquitous in stratified water. Their properties are influenced strongly by the nature and form of the upper and lower bounding surfaces of the containing basin(s) in which they propagate. As the Arctic Ocean evolves to a seasonally more ice-free state, the IW field will be affected by the change. The relationship between IW dynamics and ice is crucial in understanding (i) the general circulation and thermodynamics in the Arctic Ocean and (ii) local mixing processes that supply heat and nutrients from depth into upper layers, especially the photic zone. This, in turn, has important ramifications for sea ice formation processes and the state of local and regional ecosystems. Despite this, the effect of diminishing sea ice cover on the IW field (and vice versa) is not well established. A better understanding of IW dynamics in the Arctic Ocean and, in particular, how the IW field is affected by changes in both ice cover and stratification, is central in understanding how the rapidly changing Arctic will adapt to climate change.

The objective of this study was to generate periodic IWs under different ice types, namely, nilas, grease, and level. The main focus of the experiments was to (i) obtain accurate measurements of the wave induced velocity field under the ice and (ii) get a qualitative understanding of how different ice conditions affect the IW field

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