Glacier monitoring using real-aperture 94 GHz radar

Close-range sensors are employed to observe glaciological processes that operate over short timescales (e.g. iceberg calving, glacial lake outburst floods, diurnal surface melting). However, under poor weather conditions optical instruments fail while the operation of radar systems below 17 GHz do n...

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Veröffentlicht in:	Annals of glaciology 2022-09, Vol.63 (87-89), p.116-120
Hauptverfasser:	Harcourt, William D., Robertson, Duncan A., Macfarlane, David G., Rea, Brice R., Spagnolo, Matteo, Benn, Douglas I., James, Mike R.
Format:	Artikel
Sprache:	eng
Schlagworte:	Angular resolution Antennas Aperture Digital cameras Earth science Fog Glacial lake outburst floods Glacial lakes Glacier mapping Glacier measurements glacier monitoring Glaciers glaciological instruments and methods Glaciology Ice calving Ice sheets Iceberg calving Icebergs Letter Millimeter waves Optical instruments Radar Radar equipment Radar systems Rain remote sensing Sensors Snow Topography Weather Weather conditions
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Beschreibung
Zusammenfassung:	Close-range sensors are employed to observe glaciological processes that operate over short timescales (e.g. iceberg calving, glacial lake outburst floods, diurnal surface melting). However, under poor weather conditions optical instruments fail while the operation of radar systems below 17 GHz do not have sufficient angular resolution to map glacier surfaces in detail. This letter reviews the potential of millimetre-wave radar at 94 GHz to obtain high-resolution 3-D measurements of glaciers under most weather conditions. We discuss the theory of 94 GHz radar for glaciology studies, demonstrate its potential to map a glacier calving front and summarise future research priorities.
ISSN:	0260-3055 1727-5644
DOI:	10.1017/aog.2023.30