A method for extensive spatiotemporal assessment of soil temperatures during an experimental fire using distributed temperature sensing in optical fibre
Ryan Tangney A B F , Nader A. Issa C , David J. Merritt A E , John N. Callow D and Ben P. Miller A E
+ Author Affiliations
- Author Affiliations
A Kings Park Science, Department of Biodiversity, Conservation and Attractions, 1 Kattidj Close, Kings Park, WA 6005, Australia.
B School of Environment and Agriculture, Curtin University, Kent Street, Bentley, WA 6102, Australia.
C Light Touch Solutions Pty Ltd, The Centre for Entrepreneurial Research and Innovation, 1/22 Stirling Highway, Perth, WA 6000, Australia.
D UWA School of Agriculture and Environment, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.
E School of Biological Sciences, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.
F Corresponding author. Email: ryan.tangney@dbca.wa.gov.au
International Journal of Wildland Fire 27(2) 135-140 https://doi.org/10.1071/WF17107
Submitted: 14 July 2017 Accepted: 5 December 2017 Published: 9 February 2018
Abstract
The use of distributed temperature sensing (DTS) for ecological applications has increased rapidly in the last 6 years. Here we demonstrate the first use of DTS to measure soil temperatures during a fuel reduction burn – in an urban grassy Tuart–Banksia woodland remnant near Perth, Western Australia. Optical fibre with an acrylate material coating (diameter 242 μm), but no other jacketing or cabling, was buried in the soil at depths between 0 and 5 cm. Measurements were recorded over 316 m of optical fibre using a DTS measurement unit, providing data over a 5.5-h period at 20-s intervals; resulting in 1243 temporal measurements at 60-cm spatial resolution. Soil temperatures were calibrated to an error of ±6.8% at 250°C. Methods for installation, calibration and data visualisation are presented. Issues associated with assessment of DTS data in a fire ecology context are discussed.
Additional keywords: fire behaviour, prescribed burning, soil heating, urban fire.
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