2017 aerial thermal infrared survey of the Waimangu-Rotomahana-Mt Tarawera Geothermal Field

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Reeves, R.R.; Macdonald, N. 2018 2017 aerial thermal infrared survey of the Waimangu-Rotomahana-Mt Tarawera Geothermal Field. Lower Hutt, N.Z.: GNS Science. GNS Science report 2017/48. 20 p.; doi: 10.21420/G21S8C

Abstract: An aerial thermal infrared (TIR) survey of the southern part of the Waimangu-Rotomahana-Mt Tarawera Geothermal Field was undertaken on 28 January, 2017. 2119 TIR images were processed and mosaicked to produce a single, 16-bit image with a ground pixel size of approximately 2 m x 2 m (Figure A1). Limited ground checking was completed as part of the survey. The purpose of this report is to summarise the method of data collection, and present the final TIR image with a preliminary interpretation. The TIR data is of good quality, and has enabled numerous geothermal and non-geothermal surface features to be identified and mapped to relatively high spatial accuracies (within the limitations of the survey). The locations of TIR anomalies, interpreted to be caused by geothermal activity, are generally in agreement with areas of known surface geothermal activity. Several areas where thermal seeps may be discharging into Lakes Tarawera and Rotomahana are identified. (auth)