Measuring large topographic change with InSAR : Lava thicknesses , extrusion rate and subsidence rate at Santiaguito volcano , Guatemala

@inproceedings{Ebmeier2012MeasuringLT,
  title={Measuring large topographic change with InSAR : Lava thicknesses , extrusion rate and subsidence rate at Santiaguito volcano , Guatemala},
  author={Susanna K. Ebmeier and J. Biggs and Tamsin A Mather and J. R. Elliott and Geoff Wadge and Falk Amelung},
  year={2012}
}
Lava flows can produce changes in topography of the order of 10s–100s of metres. A knowledge of the resulting volume change provides evidence about the dynamics of an eruption. Using differential InSAR phase delays, it is possible to estimate height differences between the current topography and a digital elevation model (DEM). This does not require a pre-event SAR image, so it does not rely on that we can estimate lava thicknesses of as little as 9 m, given a minimum of five interferograms… CONTINUE READING
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