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A wireless subglacial probe for deep ice applications
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
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2012 (English)In: Journal of Glaciology, ISSN 0022-1430, Vol. 58, no 211, 841-848 p.Article in journal (Refereed) Published
Abstract [en]

We present the design and first results from two experiments using a wireless subglacial sensor system (WiSe) that is able to transmit data through 2500 m thick ice. Energy consumption of the probes is minimized, enabling the transmission of data for at least 10 years. In July 2010 the first prototype of the system was used to measure subglacial pressure at the base and a temperature profile consisting of 23 probes in two 600 m deep holes at Russell Glacier, a land-terminating part of the West Greenland ice sheet near Kangerlussuaq. The time series of subglacial pressure show very good agreement between data from the WiSe system and the wired reference system. The wireless-measured temperature data were validated by comparison with the theoretical decrease of melting point with water pressure inside the water-filled hole directly after installation. To test the depth range of the WiSe system a second experiment using three different probe types and two different surface antennas was performed inside the 2537 m deep hole at NEEM. It is demonstrated that, with the proper combination of transmission power and surface antenna type, the WiSe system transmits data through 2500 m thick ice.

Place, publisher, year, edition, pages
2012. Vol. 58, no 211, 841-848 p.
Keyword [en]
drainage systems; hydraulic system; west Greenland; sheet; deformation; pressure; velocity; flow
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-184493DOI: 10.3189/2012JoG11J130ISI: 000309248400003OAI: oai:DiVA.org:uu-184493DiVA: diva2:565678
Available from: 2012-11-08 Created: 2012-11-07 Last updated: 2012-11-08Bibliographically approved

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