摘要：We focus on the measurement of the topography and bathymetry in
flume-models of braided rivers. To this aim, an innovative measurement system
is adopted. It consists of a laser-ultrasonic sensor and can survey the bed elevation
under flowing water. This measurement system was used to profile a flume
transect with a frequency of 2 minutes, without stopping the water discharge.
By this technique, the topography and the bathymetry of a single transect was
continuously acquired in 3 braided rivers generated with the same experimental
set-up. The main results are: (i) the quantification of the variability of the number
of channels and number of active channels; (ii) the assessment of the probability
distribution of some key hydraulic and morphodynamic parameters; and
(iii) the verification of the repeatability of results obtained from flume-models
of braided rivers.
其他摘要：We focus on the measurement of the topography and bathymetry in flume-models of braided rivers. To this aim, an innovative measurement system is adopted. It consists of a laser-ultrasonic sensor and can survey the bed elevation under flowing water. This measurement system was used to profile a flume transect with a frequency of 2 minutes, without stopping the water discharge. By this technique, the topography and the bathymetry of a single transect was continuously acquired in 3 braided rivers generated with the same experimental set-up. The main results are: (i) the quantification of the variability of the number of channels and number of active channels; (ii) the assessment of the probability distribution of some key hydraulic and morphodynamic parameters; and (iii) the verification of the repeatability of results obtained from flume-models of braided rivers.
