Publication Date:
2017-04-04
Description:
Abstract: Results of recent monitoring activities on potentially unstable areas of the NW
volcano flank of La Fossa cone (Vulcano Island, Italy) are shown here. They are obtained
by integration of data by aerial photogrammetry, terrestrial laser scanning (TLS) and GPS
taken in the 1996–2011 time span. A comparison between multi-temporal models built
from remote sensing data (photogrammetry and TLS) highlights areas characterized by
~7–10 cm/y positive differences (i.e., elevation increase) in the upper crown of the slope.
The GPS measurements confirm these results. Areas characterized by negative differences,
related to both mass collapses or small surface lowering, also exist. The higher differences,
positive and negative, are always observed in zones affected by higher fumarolic activity.
In the 2010–2012 time span, ground motions in the northern part of the crater rim,
immediately above the upper part of observed area, are also observed. The results show
different trends for both vertical and horizontal displacements of points distributed along
the rim, with a magnitude of some centimeters, thus revealing a complex kinematics. A
slope stability analysis shows that the safety factors estimated from these data do not
OPEN ACCESS
Remote Sens. 2013, 5 2239
indicate evidence of possible imminent failures. Nevertheless, new time series are needed
to detect possible changes with the time of the stability conditions, and the monitoring has to go on.
Description:
Published
Description:
2238-2256
Description:
1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive
Description:
N/A or not JCR
Description:
open
Keywords:
Terrestrial Laser Scanning
;
aerial photogrammetry
;
GPS
;
3D modeling
;
Volcano
;
Landslide
;
04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
Permalink
