Reeves, R.R.; Scott, B.J.; Hall, J. 2014 2014 thermal infrared survey of the Rotorua and Lake Rotokawa-Mokoia geothermal fields. Lower Hutt, N.Z.: GNS Science. GNS Science report 2014/57 24 p.
Abstract: An aerial thermal infrared (TIR) survey of the Rotorua and Lake Rotokawa-Mokoia Geothermal Fields was undertaken on 6-7 March, 2014. Approximately 2700 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). The purpose of this report is to summarise the method of data collection, and present the final TIR image and accompanying brief interpretation. The TIR data is of good quality and enables numerous geothermal and non-geothermal surface features to be identified and mapped to relatively high spatial accuracies (<5 m) within the limitations of the survey. The locations of TIR anomalies interpreted to be caused by geothermal activity are in general agreement with areas of known surface geothermal activity. Several areas where thermal seeps may be discharging into Lake Rotorua in the Rotorua City, Mokoia Island and Rotokawa areas are identified. (auth)