September 29th Photos

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1. Our location. The Mackenzie Line (ML) and Mackenzie River delta are also shown. Please refer to Dispatch 24 text which explains the major goals for this region study.
2. Arthi Ramachandran. (David Jones)
3. Arthi Ramachandran and Cassie DeFrancesco on ice in the Beaufort Sea. (David Jones)
4. Arthi Ramachandran works on an ice core temperature measurement. (David Jones)
5. Overview of the Microbial work being done by Connie Lovejoy and Arthi Ramachandran. (Courtesy of Connie Lovejoy)

6. We expected to observe similar images in the region of the MK Line. Shown is a synthetic aperture radar (SAR) image of the Columbia River plume on 9 August 2002. The image indicates regions of enhanced surface roughness associated with plume-front and internal wave velocity convergences. SAR image courtesy of P. Orton, T. Sanders and D. Jay; the image was processed at the Alaska Satellite Facility, and is the copyright of the Canadian Space Agency. This image was published by Jonathan D. Nash & James N. Moum (River plumes as a source of large-amplitude internal waves in the coastal ocean) in 2005 in Nature Letters: Vol 437|15 September 2005|doi:10.1038/nature03936.

7. Manifestations of internal waves at the sea surface in the vicinity of the MK-Line. (Courtesy of Bill Williams)
8. Internal waves observed by fishing radar in the summer of 2006, in the vicinity of the MK-Line. The radar shows arctic code in different water layers and at the same time there is an excellent reflection of sound from the lower boundary of surface fresh water layer where plankton has a high concentration. The wave-like structure of this layer indicates internal wave propagation. (Prepared by Andrey Proshutinsky and Bill Williams)

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