Geography Reference
In-Depth Information
Table 11.1
(
continued
).
Area Concerned
Time Series
Resolution
Data
Parameters
References
Surveyed
Strickland River
floodplains (Papua
New
Guinea)/330 km
1972, 1990/1993
and 2000/2001
14 to 57 m
Landsat
Channel shifting
and width
Aalto et al., 2008
Sainte Marguerite
River
(Canada)/80 km
reach
August 2002
3 cm and
10 cm
Airborne special
survey
Grain size
Carbonneau
et al., 2012
Brazos River (Texas,
USA) and Lamar
River (Wyoming,
USA)/1 and 2 km
reaches
August 1999
(Lamar River)
and May 2002
(Brazos River)
1 m
Airborne special
survey. Brazos
River : (red,
green, blue)
digital aerial
photographs
and Lamar
River : 128
band
hyperspectral
imagery
Depth
(bathymetry
models)
Fonstad and
Marcus, 2005
Tay River and
Tummel River
(UK)/12.5 km
reach
1971 to 1994
1:5,000;
1:7,500;
1:12,000;
1:24,000
Aerial
photographies
(color, false
colour infrared
and black and
white)
Width, braided
index and
sinuosity
Winterbottom,
2000
Study at large scale
Europe
Present
25 m
2 mosaics
combined :
Landsat ETM
Riparian zone
Clerici et al., 2011
+
and Spot LISS
Herault Bassin
(France)/1,150 km
Present
50 cm et 10 m
National
Orthophotos
Archives and
Spot 5 XS
Land use in
riparian
corridors
Tormos, 2010
Mekong River
(China)/2,500 km
1998 to 2004
1 to 10 m
Ikonos and Spot 5
Channel forms
Gupta et Liew,
2007
identified, to model relationships between these types and
the driving-processes. A range of strategies can be applied
to extract information. As shown by Piegay and Schumm
(2003), geographic patterns of hydrographic networks
can be used to both highlight similarities between fea-
tures at different scales (inter-object comparisons within
a catchment or between catchments) and, by considering
longitudinal trends, to provide information on sources
and on local controls on sediment transfer (Table 11.1).
In the first case, it is possible to sample features and
work on inter-object comparisons, sampling being driven
by the working hypothesis. The comparison of geographic
objects is not a new perspective, getting its roots in the
hydraulic geometry approach and allogenic modelling
(Church and Mark, 1980). In this area, research has mainly
focused on channel planforms and notably on meandering
geometry and cut-offs in a synchronic approach or in a
diachronic way looking at channel shifting.
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