AVTIS

AVTIS (All-weather Volcano Topography Imaging Sensor) is a research instrument developed at St Andrews for measuring the size, shape and temperature of volcanic lava domes under virtually any weather conditions.

 

To learn more about AVTIS and see the results and development of the instrument throughout the project, follow the links below, and to the left:

Overview

  • Problem: What is our motivation for building AVTIS?
  • Concept: How can mm-waves help?
  • Theory: mm-wave imaging, radar and radiometry
  • History: AVTIS has come along way since it began in 2004. Here is a brief outline to its development of over the years, and an outline of the future of the project.

Projects

  • AVTIS 1: The original instrument; developed and tested 2004 – present.
  • AVTIS 2: Upgrade of AVTIS 1 with Doppler and rain measuring capabilities.
  • AVTIS 3: Autonomous version of AVTIS 2 that will be constantly fixed on site near the Soufriere hills volcano, Montserrat.

Fieldwork

AVTIS 1:

  • Local testing: Close range mapping in St Andrews and survey of Balmullo Quarry
  • Montserrat 2004: First use in the field, development and limitations
  • Arenal 2005: Measuring the movement of lava flows in Costa Rica
  • Montserrat 2005: Capturing the growth and temperature of the Soufriere Hills lava dome

lahar

Publications


JOURNAL PUBLICATIONS

 

Macfarlane, D.G., Odbert, H.M., Robertson, D.A., James, M. R., Pinkerton, H. and Wadge, G., “Topographic and thermal mapping of volcanic terrain using the AVTIS ground based 94GHz dual-mode radar/radiometric imager”, (accepted Oct 2011), IEEE Transactions on Geoscience and Remote Sensing

 

Rogers, A.B., Macfarlane, D.G. and Robertson, D.A. “Complex Permittivity of Volcanic Rock and Ash at Millimeter Wave Frequencies”, (2011), IEEE Geoscience and Remote Sensing Letters, 8 (2), art. no. 5582203, pp. 298-302.  doi: 10.1109/LGRS.2010.2064756

 

Middleton, R.J.C., Macfarlane, D.G. and  Robertson, D.A.  “Range autofocus for linearly frequency-modulated continuous wave radar” (2011) IET Radar, Sonar & Navigation,  5 (3), pp. 288-295. doi: 10.1049/iet-rsn.2010.0097

 

Wadge, G., Macfarlane, D.G., Odbert, H.M., James, M. R., Hole, J. K., Ryan, G., Bass, V., De Angelis, S., Pinkerton, H., Robertson, D.A. and Loughlin, S.C.,  “Lava dome growth and mass wasting measured by a time series of ground-based radar and seismicity observations”, (2008), J. Geophys. Res., 113, B08210, doi: 10.1029/2007JB005466

 

Macfarlane, D.G., Wadge, G., Robertson, D.A., James M.R. & Pinkerton, H., “Use of a portable

topographic mapping millimetre wave radar to an active lava flow”, (2006),  Geophys. Res. Lett., 33, L03301,

doi: 10.1029/2005GL025005

 

Wadge, G., Macfarlane, D.G., Robertson, D.A., Hale, A.J., Pinkerton, H., Burrell, R.V., Norton, G.E. & James,

M.R., “AVTIS: a novel millimetre-wave ground based instrument for volcano remote sensing”, Journal of

Volcanology and Geothermal Research, (2005), 146, pp. 307-318. doi: 10.1016/j.jvolgeores.2005.03.003

 

Wadge, G., Macfarlane, D. G., James, M . R., Odbert, H. M., Applegarth, L. J., Pinkerton, H., Robertson, D. A., Loughlin, S. C., Strutt, M., Ryan, G. & Dunkley, P. N., “Imaging a growing lava dome with a portable radar”, EOS, Trans. AGU, 87, (23), 9th June 2006, pp. 226-228. doi: 10.1029/2006EO230003

 

2008

Wadge, G., Macfarlane, D.G., Odbert, H.M., James, M. R., Hole, J. K., Ryan, G., Bass, V., De Angelis, S., Pinkerton, H., Robertson, D.A. and Loughlin,. S.C., “Lava dome growth and mass wasting measured by a time series of ground-based radar and seismicity observations”, J. Geophys. Res., 113, B08210, doi:10.1029/2007JB005466

2006

Macfarlane, D.G., Wadge, G., Robertson, D.A., James M.R. & Pinkerton, H., “Application of a portable topographic mapping millimetre wave radar to an active lava flow.”, Geophys. Res. Lett., 33, L03301, doi:10.1029/2005GL025005.

2005

Wadge, G., Macfarlane, D.G., Robertson, D.A., Hale, A.J., Pinkerton, H., Burrell, R.V., Norton, G.E. & James, M.R., “AVTIS: a novel millimetre-wave ground based instrument for volcano remote sensing”, Journal of Volcanology and Geothermal Research, 146,pp. 307-318.