Satellite Observations of Oceanic Eddies Around Africa

Alpers, Werner; Dagorne, Dominique; Brandt, Peter

doi:10.1007/978-94-017-8008-7_11

Remote Sensing of the African Seas 2014

DOI: 10.1007/978-94-017-8008-7_11

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Satellite Observations of Oceanic Eddies Around Africa

Werner Alpers

Dominique Dagorne

Peter Brandt

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2017

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“…It is well known that small-scale eddies, such as those produced at high latitudes, can be generated by atmospheric forcing; 19 in this paper, the correlation between Eneide wind data and eddy extent is quantified as a joint function by means of two different statistical functions. The analysis provides elements for evaluating the temporal matching of the two variables.…”

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Synthetic aperture radar analysis of floating ice at Terra Nova Bay—an application to ice eddy parameter extraction

Moctezuma-Flores

Parmiggiani

Fragiacomo

et al. 2017

J. Appl. Remote Sens

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, "Synthetic aperture radar analysis of floating ice at Terra Nova Bay-an application to ice eddy parameter extraction," J. Appl. Remote Sens. 11(2), 026041 (2017), doi: 10.1117/1.JRS.11.026041. Abstract. In the framework of a study of ice formation in Antarctica, synthetic aperture radar (SAR) image acquisitions were planned over Terra Nova Bay (TNB). Thanks to the European Space Agency (ESA) Third Party Mission program, Cosmo-SkyMed and Radarsat-2 images over TNB were obtained for the period of February 20 to March 20, 2015; in addition, available Sentinel-1 images for the same period were retrieved from the ESA scientific data hub. The first inspection of the images revealed the presence of a prominent eddy, i.e., an ice vortex presumably caused by the wind blowing from the continent. The important parameters of an eddy are its area and lifetime. While the eddy lifetime was easily obtained from the image sequence, the area was measured using a specific processing scheme that consists of nonlinear filtering and Markov random field segmentation. The main goal of our study was to develop a segmentation scheme to detect and measure "objects" in SAR images. In addition, the connection between eddy area and wind field was investigated using parametric and nonparametric correlation functions; statistically significant correlation values were obtained in the analyzed period. After March 15, a powerful katabatic wind completely disrupted the surface eddy. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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confidence: 99%

Synthetic aperture radar analysis of floating ice at Terra Nova Bay—an application to ice eddy parameter extraction

Moctezuma-Flores

Parmiggiani

Fragiacomo

et al. 2017

J. Appl. Remote Sens

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Satellite Observations of Oceanic Eddies Around Africa

Cited by 1 publication

References 38 publications

Synthetic aperture radar analysis of floating ice at Terra Nova Bay—an application to ice eddy parameter extraction

Synthetic aperture radar analysis of floating ice at Terra Nova Bay—an application to ice eddy parameter extraction

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