Topographic and thermal mapping of volcanic terrain using the AVTIS ground-based 94-GHz dual-mode radar/radiometric imager
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The All-Weather Volcano Topography Imaging Sensor remote sensing instrument is a custom-built millimeter-wave (MMW) sensor that has been developed as a practical field tool for remote sensing of volcanic terrain at active lava domes. The portable instrument combines active and passive MMW measurements to record topographic and thermal data in almost all weather conditions from ground-based survey points. We describe how the instrument is deployed in the field, the quality of the primary ranging and radiometric measurements, and the postprocessing techniques used to derive the geophysical products of the target terrain, surface temperature, and reflectivity. By comparison of changing topography, we estimate the volume change and the lava extrusion rate. Validation of the MMW radiometry is also presented by quantitative comparison with coincident infrared thermal imagery.
MacFarlane , D G , Odbert , H M , Robertson , D A , James , M R , Pinkerton , H & Wadge , G 2013 , ' Topographic and thermal mapping of volcanic terrain using the AVTIS ground-based 94-GHz dual-mode radar/radiometric imager ' IEEE Transactions on Geoscience and Remote Sensing , vol. 51 , no. 1 , 6236133 , pp. 455-472 . DOI: 10.1109/TGRS.2012.2202667
IEEE Transactions on Geoscience and Remote Sensing
© 2012, IEEE. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at ieeexplore.ieee.org / https://dx.doi.org/10.1109/TGRS.2012.2202667
DescriptionThis work was supported by the Natural Environment Research Council under Grant NER/A/S/2001/01001, Grant NE/D00859X/1, Grant NE/E001734/1, and Grant NE/E015352/1.
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