Publication Date:
2021-06-09
Description:
We present a new method that uses cooling curves,
apparent in high temporal resolution thermal data acquired
by geostationary sensors, to estimate erupted volumes and
mean output rates during short lava fountaining events. The
15 minute temporal resolution of the data allows phases of
waxing and peak activity to be identified during short (150-to-
810 minute-long) events. Cooling curves, which decay over
8-to-21 hour-periods following the fountaining event, can also
be identified. Application to 19 fountaining events recorded at
Etna by MSG’s SEVIRI sensor between 10 January 2011 and
9 January 2012, yields a total erupted dense rock lava volume
of 28 106 m3, with a maximum intensity of 227 m3 s 1
being obtained for the 12 August 2011 event. The timeaveraged
output over the year was 0.9 m3 s 1, this being the
same as the rate that has characterized Etna’s effusive
activity for the last 40 years.
Description:
We are grateful to EUMETSAT for SEVIRI
data.
Description:
Published
Description:
L06305
Description:
1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
Description:
JCR Journal
Description:
restricted
Keywords:
satellite
;
lava fountains
;
Etna
;
erupted volume
;
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
