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| Titel |
Advanced radar-interpretation of InSAR time series for mapping and characterization of geological processes |
| VerfasserIn |
F. Cigna, C. Ventisette, V. Liguori, N. Casagli |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 11, no. 3 ; Nr. 11, no. 3 (2011-03-16), S.865-881 |
| Datensatznummer |
250009267
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| Publikation (Nr.) |
 copernicus.org/nhess-11-865-2011.pdf |
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| Zusammenfassung |
| We present a new post-processing methodology for the analysis of InSAR
(Synthetic Aperture Radar Interferometry) multi-temporal measures, based on
the temporal under-sampling of displacement time series, the identification
of potential changes occurring during the monitoring period and, eventually,
the classification of different deformation behaviours. The potentials of this
approach for the analysis of geological processes were tested on the case
study of Naro (Italy), specifically selected due to its geological setting
and related ground instability of unknown causes that occurred in February 2005.
The time series analysis of past (ERS1/2 descending data; 1992–2000) and
current (RADARSAT-1 ascending data; 2003–2007) ground movements highlighted
significant displacement rates (up to 6 mm yr−1) in 2003–2007, followed by a
post-event stabilization. The deformational behaviours of instable areas
involved in the 2005 event were also detected, clarifying typology and
kinematics of ground instability. The urban sectors affected and unaffected
by the event were finally mapped, consequently re-defining and enlarging the
influenced area previously detected by field observations. Through the
integration of InSAR data and conventional field surveys (i.e. geological,
geomorphologic and geostructural campaigns), the causes of instability were
finally attributed to tectonics. |
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