English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Anomalous dispersion of sea ice in the Fram Strait region

Gabrielski, A., Badin, G., & Kaleschke, L. (2015). Anomalous dispersion of sea ice in the Fram Strait region. Journal of Geophysical Research: Oceans, 120, 1809-1824. doi:10.1002/2014JC010359.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Gabrielski, A., Author
Badin, Gualtiero1, Author           
Kaleschke, Lars2, Author           
Affiliations:
1A 3 - Climate Sensitivity and Sea Level, Research Area A: Climate Dynamics and Variability, The CliSAP Cluster of Excellence, External Organizations, Bundesstraße 53, 20146 Hamburg, DE, ou_1863480              
2B 1 - Arctic and Permafrost, Research Area B: Climate Manifestations and Impacts, The CliSAP Cluster of Excellence, External Organizations, ou_1863481              

Content

show
hide
Free keywords: sea ice; turbulent dispersion; Arctic
 Abstract: The single-particle dispersion of sea ice in the Fram Strait region is investigated using ice drift buoys deployed from 2002 to 2009 within the Fram Strait Cyclones and the Arctic Climate System Study campaigns. A new method to estimate the direction of the mean flow, based on a satellite drift product, is introduced. As a result, the bias in the dispersion introduced by the mean flow is eliminated considering only the displacements of the buoys in the cross-stream direction. Results show an absolute dispersion growing quadratically in time for the first 3 days and an anomalous dispersion regime exhibiting a strongly self-similar scaling following a 5/4 power law for time scales larger than 6 days persisting over the whole time series of length 32 days. The non-Gaussian distribution of the velocity fluctuations with a skewness of −0.15 and a kurtosis of 7.33 as well as the slope of the Lagrangian frequency spectrum between −2 and −1 are in agreement with the anomalous diffusion regime. Comparison with data from the International Arctic Buoy Program yields similar results with an anomalous dispersion starting after 10 days and persisting over the whole time series of length 50 days. The results suggest the presence of deformation and shear acting on the sea ice dispersion. The high correlation between the cross-stream displacements and the cross-stream wind velocities shows the important role of the wind as a source for the anomalous dispersion.

Details

show
hide
Language(s): -
 Dates: 2015-032015
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/2014JC010359
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Geophysical Research: Oceans
  Other : JGR
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Hoboken, NJ : Wiley
Pages: - Volume / Issue: 120 Sequence Number: - Start / End Page: 1809 - 1824 Identifier: Other: 2169-9291
CoNE: https://pure.mpg.de/cone/journals/resource/2169-9291