 |
| Titel |
On the evaluation of debris flows dynamics by means of mathematical models |
| VerfasserIn |
M. Arattano, L. Franzi |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 3, no. 6 ; Nr. 3, no. 6, S.539-544 |
| Datensatznummer |
250001310
|
| Publikation (Nr.) |
 copernicus.org/nhess-3-539-2003.pdf |
|
|
|
|
|
| Zusammenfassung |
| The
prediction of debris flow dynamic characteristics in a debris flow prone
torrent is generally made through the investigation of past events. This
investigation can be carried out through a survey of the marks left by
past debris flows along the channel and through a detailed analysis of the
type and shape of the deposits found on the debris fan. The rheological
behaviour of future debris flows can then be inferred from the results of
these surveys and their dynamic characteristics can be estimated applying
well known formulas proposed in literature. These latter will make use of
the assumptions on the rheological behaviour previously made. This type of
estimation has been performed for a debris flow occurred in an
instrumented basin, on the North-Eastern Italian Alps, in 1996 and the
results have been compared to those obtained by means of a mathematical
simulation. For the calibration of the mathematical model the limnographs
recorded by three different ultrasonic gauges installed along a torrent
reach on the fan were used. The comparison evidenced the importance of
time data recordings for a correct prediction of the debris flows
dynamics. Without the availability of data recordings, the application of
formulas based only on assumptions derived from field analysis could be
misleading. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|