Post‐Storm Water Circulation Patterns in Teshekpuk Lake (Alaska) Derived from Sequential Optical Satellite Images

Shengan Zhan, Shujie Wang, Richard A. Beck, Kenneth M. Hinkel and Hongxing Liu

Permafrost and Periglacial Processes, 2017, vol. 28, issue 1, 322-330

Abstract: Water flow speeds and directions in Teshekpuk Lake on the Arctic Coastal Plain of northern Alaska were derived from remotely sensed optical images captured after a major storm event. A Landsat 7 Enhanced Thematic Mapper Plus image and a Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer image, acquired about 41 min apart on 15 August 2000, were analysed with an image matching technique based on cross‐correlation to find corresponding features in both images. Flow speed and direction were calculated by measuring the horizontal displacement of such features in the two images. The derived water current speed ranged from 0.6 to 9.6 cm/s (mean 3.0 cm/s), during a wind blowing from the SE at an average speed of 4.9 m/s. The fastest currents (>2 standard deviations) fringed the shorelines and flowed in the direction of the wind (toward the NW), likely reflecting the direct influence of the wind conditions at the time of image acquisition. In contrast, a 10 km‐wide gyre rotating clockwise developed towards the centre of the lake, likely reflecting the influence of a storm‐driven wind veering over a 7 day period prior to the time of image acquisition. This study demonstrates that extensive water velocity fields in a lake can be derived from remotely sensed images using an image matching technique. The different flow patterns would not be readily observable without the synoptic view provided by satellite images, although the accuracy of flow speeds and directions needs further validation. Copyright © 2016 John Wiley & Sons, Ltd.

Date: 2017
References: Add references at CitEc
Citations:

Downloads: (external link)
https://doi.org/10.1002/ppp.1889

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wly:perpro:v:28:y:2017:i:1:p:322-330

Access Statistics for this article

More articles in Permafrost and Periglacial Processes from John Wiley & Sons
Bibliographic data for series maintained by Wiley Content Delivery ().