Physics
Scientific paper
Feb 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3303301m&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 3, CiteID L03301
Physics
2
Volcanology: Volcano Monitoring (7280), Volcanology: Remote Sensing Of Volcanoes, Volcanology: Instruments And Techniques
Scientific paper
A ground-based millimetre wave radar, AVTIS (All-weather Volcano Topography Imaging Sensor), has been developed for topographic monitoring. The instrument is portable and capable of measurements over ranges up to ~7 km through cloud and at night. In April and May 2005, AVTIS was deployed at Arenal Volcano, Costa Rica, in order to determine topographic changes associated with the advance of a lava flow. This is the first reported application of mm-wave radar technology to the measurement of lava flux rates. Three topographic data sets of the flow were acquired from observation distances of ~3 km over an eight day period, during which the flow front was detected to have advanced ~200 m. Topographic differences between the data sets indicated a flow thickness of ~10 m, and a dense rock equivalent lava flux of ~0.20 +/- 0.08 m3s-1.
James Matthew R.
Macfarlane D. G.
Pinkerton Harry
Robertson D. A.
Wadge Geoff
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