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|Authors: ||Ganci, G.*|
James, M. R.
Del Negro, C.*
|Title: ||Separating the thermal fingerprints of lava flows and simultaneous lava fountaining using ground-based thermal camera and SEVIRI measurements|
|Title of journal: ||Geophysical Research Letters|
|Series/Report no.: ||19/40 (2013)|
|Publisher: ||American Geophysical Union|
|Issue Date: ||2013|
|Abstract: ||During effusive eruptions, thermal satellite monitoring
has proved well suited to map the thermal flux from lava
flows. However, during lava fountaining events, thermal
contributions from active flows and from the fountain
itself cannot be separated in low resolution satellite data.
Here using photogrammetry and atmospheric modeling
techniques, we compare radiance estimates from long-range
ground-based thermal camera data (from which the fountain
can be excluded) with those from SEVIRI satellite images
for a fountaining event at Mount Etna (12 August 2011).
The radiant heat flux determined from the ground-based
camera showed similar behavior to values retrieved from
Spinning Enhanced Visible and Infrared Imager (SEVIRI);
thus the SEVIRI signal is interpreted to be dominated by the
lava flows, with minimal contribution from the fountain.
Furthermore, by modeling the cooling phase of each pixel
inundated by lava, the mean thickness and lava volume
(~2.4 × 106 m3) derived from camera images are comparable
with those calculated from SEVIRI (~2.8 × 106 m3).|
|Appears in Collections:||04.08.06. Volcano monitoring|
Papers Published / Papers in press
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