BedloadWeb results from a collaboration between INRAE and l'Office Francais de la Biodiversite
The english version of this website was funded by the AlpineSpace European project 'HyMoCARES'
BedloadWeb is the online version of the program BedloadR which objectives is to make it easy visualization data from the literature, and to offer assistance in calculating the sediment transport associated with a flow section. It aims to be a collaborative platform to encourage exchanges between researchers and practitioners, but also, to be educational for students
The 'Database' tab is used to select one or more rivers for its physical characteristics (slope, grain size distribution, channel width). The results are displayed graphically and can be downloaded for external use (in text format). The database contains more than 11,000 values collected from more than 120 sites for a wide range of slopes, widths, grain sizes, and from the laboratory and the field. All datasets have been checked for consistency (in particular hydraulics) and include at least the following information: slope, D50, width, flow or depth, solid transport. The 'Select a river' tab allows to find all the information about a particular river (its identity file) and the corresponding data. The 'Multicriteria selection' tab allows selecting data from selection criteria. The data can also be compared with some standard equations. The goal is educational, because it is possible to test the sensitivity of models to the different input parameters
It is composed of a series of tools intended to accompany the user in the elaboration of a sediment budget. It has several tabs, each of which represents an essential step for a serious study. The tabs are presented in a logical sequence, each producing useful data to the following ones: (1) the tab 'Granulometry' allows you to define the granulometry of the sediments (2) the tab 'Section' allows to define (topography) and to dress (roughness ..) the flow section (3) the 'hydraulic' tab allows to calculate the main quantities in normal uniform regime (4) the 'solid transport' tab calculates the fluxes for the granulometry, the section and hydraulics previously defined 5) the 'hydrology' tab permts to defien an hydrology and to compute the associated sediment budget
All information likely to improve the platform are welcome (photos, new data, comments, questions ...). This is especially true during the 'break-in' phase of the site. Any anomalies can be quickly corrected provided they are reported to us
New equations can also be added to the tools already available.
BedloadWeb is free to access. A reference (or web link) to the original publication is always given and must be recalled whenever a dataset is used. The authors would also appreciate the fact that the BedloadWeb platform is cited when it is used.
Test sensitivity to:
Note: small differences may exist between the D50 and D84 extracted from the granulometric curves and those provided in the database
Note: Parker90 used here with sand fraction of the granulometric curve
IMPORTANT: ENSURE THAT THE ENCODING OPTION IS UFT8 WHILE BACKING UP THE .TXT FILE ON YOUR PC
The flood plain is the area solicited during floods, when the main channel is full. From a morphological point of view, it is generally a fairly flat, stable area, devoid of gravel (except in braiding rivers) and large. From a hydraulic point of view, there is generallly a break in the rise of the flood, because when the water stat flowing in the flood plain, each increase in discharge will have a weak impact on the height of water inside the main channel.
Braiding morphologies are the most difficult to treat because the bed is complex. We chose here to limit the active bed to the main channel of the braiding river, even if the morphodynamics seems to be active everywhere: this is based on the observation that, in general, even during large floods, a braiding river has a sedimentary response limited to a single channel that sweeps the braiding plain during the flood. All areas outside this active channel are considered depositional zones.
Test sensitivity to:
Document to download
Version 2.5 - January 2021
Code management Alain Recking , Sylvain Duchene
Server management Eric Maldonado
IRSTEA, UGA, UR ETNA, Domaine universitaire 2 rue de la Papeterie, BP 76, 38 402 Saint-Martin-d Heres cedex