HR: 0830h
AN: H51B-02 [Abstracts]
TI: The Importance of Drainage Network Definition in the Determination of the Basin Response.
AU: Roth, G
EM: giorgio@cima.unige.it
AF: CIMA - Centro di Ricerca Interuniversitario in Monitoraggio Ambientale, Universit… di Genova e
Universit… della Basilicata, Via Cadorna 7, Savona, 17100 Italy
AU: Roth, G
EM: giorgio@cima.unige.it
AF: DIST - Dipartimenti di Informatica, Sistemistica e Telematica, Universit… di Genova, via all'Opera Pia
23, Genova, 16100 Italy
AU: Francesca, G
EM: francesca.giannoni@arpal.org
AF: CIMA - Centro di Ricerca Interuniversitario in Monitoraggio Ambientale, Universit… di Genova e
Universit… della Basilicata, Via Cadorna 7, Savona, 17100 Italy
AU: Francesca, G
EM: francesca.giannoni@arpal.org
AF: CMIRL - Agenzia Regionale Per l'Ambiente Ligure, Piazza della Vittoria 15/C, Genova, 16121 Italy
AU: * Rudari, R
EM: rr@cima.unige.it
AF: CIMA - Centro di Ricerca Interuniversitario in Monitoraggio Ambientale, Universit… di Genova e
Universit… della Basilicata, Via Cadorna 7, Savona, 17100 Italy
AU: * Rudari, R
EM: rr@cima.unige.it
AF: DIST - Dipartimenti di Informatica, Sistemistica e Telematica, Universit… di Genova, via all'Opera Pia
23, Genova, 16100 Italy
AB:
The identification of channel initiation points is central to geomorphology and hydrology. The Geomorphologic Instantaneous
Unit Hydrograph (GIUH) concept is extensively used to describe surface water transport phenomena in small catchments. Recent
works pointed out the relative importance, in specific environments, of three different sources of dispersion in
characterizing the hydrologic response function through the GIUH application: geomorphologic, kinematic and hydrodynamic. The present work shows that, accounting for a correct representation of the geomorphologic dispersion and of the kinematic
dispersion, only due to the differences between hillslope and channel routing process, is sufficient to determining the main
features of the hydrologic response in small steep catchments. An objective procedure for the calibration of the
geomorphologic filter used to distinguish between hillslope and channel paths is applied to identify the drainage network for several catchments. Different case studies are presented.
DE: 1818 Evapotranspiration
DE: 1824 Geomorphology (1625)
DE: 1860 Runoff and streamflow
DE: 1866 Soil moisture
SC: Hydrology [H]
MN: 2005 Joint Assembly