Use of a portable topographic mapping millimetre wave radar at an active lava flow

D G  Macfarlane; G  Wadge; D A  Robertson; M R  James; H  Pinkerton

doi:10.1029/2005GL025005

Use of a portable topographic mapping millimetre wave radar at an active lava flow

D G Macfarlane, G Wadge, D A Robertson, M R James, H Pinkerton

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

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 similar 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 similar to 3 km over an eight day period, during which the flow front was detected to have advanced similar to 200 m. Topographic differences between the data sets indicated a flow thickness of similar to 10 m, and a dense rock equivalent lava flux of similar to 0.20 +/- 0.08 m(3) s(-1).

Original language	English
Number of pages	4
Journal	Geophysical Research Letters
Volume	33
DOIs	https://doi.org/10.1029/2005GL025005
Publication status	Published - 1 Feb 2006

Keywords

COSTA-RICA
VOLCANO
ERUPTION

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10.1029/2005GL025005

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abstract = "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 similar 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 similar to 3 km over an eight day period, during which the flow front was detected to have advanced similar to 200 m. Topographic differences between the data sets indicated a flow thickness of similar to 10 m, and a dense rock equivalent lava flux of similar to 0.20 +/- 0.08 m(3) s(-1).",

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AU - Macfarlane, D G

AU - Wadge, G

AU - Robertson, D A

AU - James, M R

AU - Pinkerton, H

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Use of a portable topographic mapping millimetre wave radar at an active lava flow

Abstract

Keywords

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