AVTIS observations of lava dome growth at Soufrière Hills Volcano, Montserrat: 2004 to 2011

G. Wadge, David Graham MacFarlane, H. Odbert, A. Stinton, Duncan Alexander Robertson, M.R. James, H. Pinkerton

Research output: Chapter in Book/Report/Conference proceedingChapter


To solve the problem of lava dome growth at Soufriere Hills Volcano (SHV) being invisible and unmeasured owing to cloud, we have designed, built and deployed a ground-based millimetre-wave radar/radiometer: the All-weather Volcano Topography Imaging Sensor (AVTIS). In this chapter, after an outline technical sketch of the instruments, we describe the campaigns between 2004 and 2011 used to test their capabilities. We then present results from the campaigns to illustrate how signals of volcanological interest can be
retrieved. The primary measurements of AVTIS are range (to within, at best, about 1 m), and, from that, topography, topographical change and effusion rates, and surface temperature (to within a few degrees Celsius). Changes in radar reflectivity can indicate surface processes (e.g. mass wasting). Surface motion within the instantaneous field of view produces a Doppler signal that allows detection of rockfall. Attenuation of the signal by rain along the path can, when stacked temporally, give an image of rain cloud structure and, by calibration, a rate of rainfall. We regard a strategy of two radars – one permanantly mounted (at Windy Hill) autonomous instrument, and the other used as a rover – as being best for capturing dome growth.
Original languageEnglish
Title of host publicationThe eruption of Soufriere Hills Volcano, Montserrat from 2000 to 2010.
EditorsG. Wadge, R.E.A. Robertson, B. Voight
Place of PublicationLondon
PublisherGeological Society of London
Number of pages12
ISBN (Print)978-1-86239-630-2
Publication statusPublished - 2014

Publication series

PublisherGeological Society
ISSN (Print)0435-4052


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