A novel and low cost sea ice mass balance buoy

Jackson, Keith; Wilkinson, Jeremy; Maksym, Ted; Beckers, Justin; Haas, Christian; Meldrum, David; McKenzie, David. 2013 A novel and low cost sea ice mass balance buoy. Journal of Atmospheric and Oceanic Technology, 30 (11). 2676-2688.

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The understanding of sea ice mass balance processes requires continuous monitoring of the seasonal evolution of the ice thickness. While autonomous ice mass balance buoys (IMB buoys) deployed over the past two decades have contributed to our understanding of ice growth and decay processes, deployment has been limited, in part, by the cost of such systems. Routine, basin-wide monitoring of the ice cover is realistically achievable through a network of reliable and affordable autonomous instrumentation. We describe the development of a novel autonomous platform and sensor that replaces the traditional thermistors string for monitoring temperature profiles in the ice and snow using a chain of inexpensive digital temperature chip sensors linked by a single-wire data bus. By incorporating a heating element on each sensor, the instrument is capable of resolving material interfaces (e.g. air-snow and ice-ocean boundaries) even under isothermal conditions. The instrument is small, low-cost and easy to deploy. Field and laboratory tests of the sensor chain demonstrate that the technology can reliably resolve material boundaries to within a few centimetres. The discrimination between different media based on sensor thermal response is weak in some deployments and efforts to optimise the performance continue.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: BAS Programmes > Polar Science for Planet Earth (2009 - ) > Climate
ISSN: 0739-0572
Date made live: 22 Oct 2013 14:08 +0 (UTC)

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