Publication Date:
2017-04-04
Description:
Ground-based thermal imaging is becoming an
increasingly important tool for volcano surveillance,
however the impact of volcanic plumes on quantitative
measurements of surface temperature has not been
previously evaluated. Here we use a radiative transfer
model to simulate gas (primarily H2O and SO2) and aerosol
absorptions over the path between a thermal camera and a
heat source on Stromboli volcano, Italy. A FTIR
spectrometer was used to quantify path amounts of gases
likely to be encountered when making thermal
measurements of the active craters. We find that when
using a camera sensitive from 7.5 to 13 mm, underestimates
of 400 K may be produced when viewing a source with an
actual temperature of 1200 K. Cameras that operate between
3 and 5 mm are somewhat less susceptible to these errors.
Description:
Published
Description:
L14311
Description:
reserved
Keywords:
NONE
;
04. Solid Earth::04.08. Volcanology::04.08.01. Gases
;
04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
Format:
1098429 bytes
Format:
application/pdf
