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| Titel |
Preliminary analysis of distributed in situ soil moisture measurements |
| VerfasserIn |
L. Brocca, M. Galli, M. Stelluti |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 6th Plinius Conference on Mediterranean Storms (2004) ; Nr. 2 (2005-03-31), S.81-86 |
| Datensatznummer |
250000300
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| Publikation (Nr.) |
 copernicus.org/adgeo-2-81-2005.pdf |
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| Zusammenfassung |
| Surface soil moisture content is highly variable in both space and time.
Remote sensing can provide an effective methodology for mapping surface
moisture content over large areas but ground based measurements are required
to test its reliability and to calibrate retrieval algorithms. Recently, we
had the opportunity to design and perform an experiment aimed at jointly
acquiring measurements of surface soil water content at various locations
and remotely sensed hyperspectral data. The area selected for the experiment
is located in central Umbria and it extends for 90km2. For the area,
detailed lithological and multi-temporal landslide inventory maps were
available. We identified eight plots where measurements of soil water
content were made using a Time Domain Reflectometer (TDR). The plots range
in size from 100m2 to 600m2, and cover a variety of topographic
and morphological settings. The TDR measurements were conducted during four
days, on 5 April, 15 April, 2 May and 3 May 2004. On 3 May the NERC
airborne CASI 2 acquired the hyperspectral data. Preliminary analysis
concerning the matching between the landslides and the soil moisture were
reported. Statistical and geostatistical analysis investigating the
spatial-temporal soil moisture distribution were performed. These results
will be compared with the data of surface temperature obtained from the
remotely sensed hyperspectral sensor. |
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