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Proceedings Paper

Spaceborne SAR observations of internal solitary waves in the Chukchi and Beaufort Seas
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Paper Abstract

In this work we present the results of internal solitary wave (ISW) observations derived from high-resolution spaceborne synthetic aperture radar (SAR) measurements acquired over the seasonally ice-free Chukchi and Beaufort Seas. The information on internal wave properties and locations was obtained from Envisat Advanced SAR (ASAR) images acquired during May-October 2007 and 2011. Altogether, 233 ISW packets were identified in 727 ASAR images. As observed, there is no significant difference in the normalized number of ISW observations between 2007 and 2011, while most of the waves were detected in July (33%) and August (43%). Geographically, most of the waves were observed over shelf and shelf break regions (94%), while only 6% of them were found over depths exceeding 200 m. In the Chukchi Sea, the waves were frequently observed in the northern part of the sea centered at about 72.6° N, 168° W, in its southwestern part, around Herald Shoal, near the Barrow Canyon, and in the Bering Strait. In the Beaufort Sea, some ISW activity was observed along the shelf break and north of Cape Bathurst, while a major hot spot of ISW generation was found on the Mackenzie Shelf. Maps of selected ISW properties, including their propagation direction, crest length and wavelength of leading waves provide further details about spatial characteristics of the observed internal waves.

Paper Details

Date Published: 14 October 2019
PDF: 7 pages
Proc. SPIE 11150, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2019, 111500F (14 October 2019); doi: 10.1117/12.2532604
Show Author Affiliations
Igor E. Kozlov, Marine Hydrophysical Institute (Russian Federation)
Russian State Hydrometeorological Univ. (Russian Federation)
Evgenia V. Zubkova, Russian State Hydrometeorological Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 11150:
Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2019
Charles R. Bostater Jr.; Xavier Neyt; Françoise Viallefont-Robinet, Editor(s)

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