A Hidden Eruption: The 21 May 2023 Paroxysm of the Etna Volcano (Italy)
Remote Sensing,
Год журнала:
2024,
Номер
16(9), С. 1555 - 1555
Опубликована: Апрель 27, 2024
On
21
May
2023,
a
hidden
eruption
occurred
at
the
Southeast
Crater
(SEC)
of
Etna
(Italy);
indeed,
bad
weather
prevented
its
direct
and
remote
observation.
Tephra
fell
toward
southwest,
two
lava
flows
propagated
along
SEC’s
southern
eastern
flanks.
The
monitoring
system
Istituto
Nazionale
di
Geofisica
e
Vulcanologia
testified
to
occurrence.
We
analyzed
seismic
infrasound
signals
constrain
temporal
evolution
fountain,
which
lasted
about
5
h.
finally
reached
Etna’s
summit
weeks
later
found
an
unexpected
pyroclastic
density
current
(PDC)
deposit
covering
flow
middle
portion.
performed
unoccupied
aerial
field
surveys
reconstruct
in
3D
SEC,
flows,
PDC
deposits
collect
some
samples.
data
allowed
for
detailed
mapping,
quantification,
characterization
products.
resulting
volumes
were
(1.54
±
0.47)
×
106
m3
(1.30
0.26)
105
m3,
respectively.
also
ground-radar
satellite
evaluate
that
plume
height
ranges
between
10
15
km.
This
work
is
comprehensive
analysis
fieldwork,
UAS,
volcanic
tremor,
infrasound,
radar,
data.
Our
results
increase
awareness
activity
potential
dangers
visitors
area.
Язык: Английский
The 23–24 March 2021 lava fountain at Mt Etna, Italy
Bulletin of Volcanology,
Год журнала:
2024,
Номер
86(6)
Опубликована: Май 24, 2024
Abstract
In
2021,
more
than
50
paroxysmal
episodes
occurred
at
the
South-East
Crater
(SEC)
of
Mt
Etna,
Italy.
The
23–24
March
lava
fountain
was
one
longest
and
began
with
weak
Strombolian
explosions,
gradually
transitioning
to
fountaining.
eruption
intensity
then
dropped
slowly
in
previous
episodes,
resulting
pulsating
explosions
dominated
by
ash
emission.
Thirty-four
tephra
samples
were
used
reconstruct
fallout
dispersal
estimate
total
erupted
mass.
Grain
size,
textural,
petrological
geochemical
analyses
indicate
different
features
compared
gas
phase
(SO
2
HCl)
volcanic
plume.
By
applying
stochastic
global
optimization
simulations
temporal
evolution
column
height
deposition,
mass
retrieved
(6.76
×
10
8
kg)
matches
well
estimation
ground-based
deposit
(8.03
±
2.38
kg),
reducing
throughout
episode
from
6.44
4.5
km
above
sea
level
a
rate
ranging
1.96
5
8.18
3
kg/s.
unusual
duration
characteristics
products
point
change
explosive
style
magma
fragmentation
fountaining
emission
phases,
associated
slower
supply
inducing
rheology
final,
prolonged
generation.
Furthermore,
this
study
showed
that
using
observational
data
variation
source
parameters
for
numerical
can
improve
accuracy
predicting
plume,
thus
mitigating
potential
impact
longer
episodes.
Язык: Английский
One hundred lava flows of Mt. Etna, Italy: July 2019–December 2023 update
Journal of Maps,
Год журнала:
2024,
Номер
20(1)
Опубликована: Авг. 6, 2024
Integration
of
multi-sensor,
multi-platform
remotely
sensed
data
is
an
effective
methodology
for
monitoring
active
volcanoes
as
it
ensures
a
constant
flow,
which
needed
repeated
eruptive
events
in
brief
intervals.
It
allows
broad
observation
the
scenario
and
quantification
erupted
products.
We
integrated
remote
sensing
data,
through
GIS
software,
to
map
lava
flows
Etna,
one
most
world.
Between
July
2019
December
2023,
Etna
gave
rise
seventy-five
events,
mainly
from
summit
craters,
emplacing
hundred
flows.
updated
Etna's
1999-2019
map,
with
recent
products,
mapping
ninety-three
out
hundred-five.
For
cartographic
simplicity,
are
grouped
by
year
or
cycle,
while
flank
distinguished
date.
To
better
display
products
highlight
process,
we
added
twenty-one
detailed
maps
main
map.
Язык: Английский
The 2020–2022 paroxysmal episodes of the South-East Crater (Mt. Etna): insights into high-frequency eruptive activity from petrological monitoring
Bulletin of Volcanology,
Год журнала:
2024,
Номер
86(10)
Опубликована: Сен. 27, 2024
Язык: Английский
TIRVolcH: Thermal Infrared Recognition of Volcanic Hotspots. A single band TIR-based algorithm to detect low-to-high thermal anomalies in volcanic regions.
Remote Sensing of Environment,
Год журнала:
2024,
Номер
315, С. 114388 - 114388
Опубликована: Окт. 3, 2024
Язык: Английский
High-resolution topography reveals morphological changes of Stromboli volcano following the July 2024 eruption
Scientific Data,
Год журнала:
2024,
Номер
11(1)
Опубликована: Ноя. 12, 2024
Abstract
The
July
2024
eruption
of
Stromboli
volcano
has
been
characterised
by
the
manifestation,
at
variable
intensity,
entire
repertoire
volcanic
events
that
is
capable
of,
and
far
one
most
changed
morphology
crater
terrace
Sciara
del
Fuoco
slope
in
last
decades.
We
present
results
an
Unoccupied
Aircraft
System
(UAS)
survey
performed
on
14
consisting
4,988
visible
thermal
photographs
coupled
with
Structure-from-Motion
photogrammetry
allowed
us
to
produce
a
high-resolution
(0.2
m/pixel)
Digital
Surface
Model
(DSM).
documented
profound
morphological
changes
resulting
from
4–11
obtained
elevation
volume
change
estimates
differencing
our
UAS-derived
pre-event
surface
(24
May
2024).
Язык: Английский
An unobserved lava fountain deciphered in real-time by high-precision borehole strainmeter and contribution to hazard evaluation: the Etna 21 May 2023 eruption
Bulletin of Volcanology,
Год журнала:
2024,
Номер
87(1)
Опубликована: Дек. 7, 2024
Abstract
A
powerful
lava
fountain
took
place
on
21
May
2023
at
Mt.
Etna
after
a
year
of
repose,
preceded
few
days
earlier
by
shallow
seismic
swarm.
The
main
critical
issue
with
the
eruption
was
difficulty
to
track
this
eruptive
event
conventional
remote
sensing
devices,
such
as
webcams
and
satellite
instruments,
due
bad
weather
conditions
especially
dense
cloud
cover.
Despite
sophisticated
monitoring
available
volcano,
effectively
remained
“hidden”.
It
here
that
borehole
dilatometers
excelled:
all
recent
fountains
Etna,
these
high-precision
instruments
detected
significant
strain
changes
proved
valuable
contribution
real-time
event.
Through
recently
implemented
approaches,
analysis
data
allowed
us
decipher
eruption:
namely
identify
timing
events,
evaluate
“size”
(i.e.
its
intensity),
also
estimate
erupted
volumes
in
near
real-time.
This
provided
useful
support
during
Civil
Protection
emergency
meeting
Prefecture
Catania,
where
results
were
presented
jointly
discussed.
Overall,
an
important
showcase,
demonstrating
strategic
signals
may
have
defining
assessing
hazard
associated
even
adverse
conditions,
when
systems
be
unable
furnish
direct
information
ongoing
phenomenon.
Язык: Английский