New views of the morphodynamics of large braided rivers from high-resolution topographic surveys and time-lapse video
Détails
ID Serval
serval:BIB_218DBC445001
Type
Actes de conférence (partie): contribution originale à la littérature scientifique, publiée à l'occasion de conférences scientifiques, dans un ouvrage de compte-rendu (proceedings), ou dans l'édition spéciale d'un journal reconnu (conference proceedings).
Collection
Publications
Institution
Titre
New views of the morphodynamics of large braided rivers from high-resolution topographic surveys and time-lapse video
Titre de la conférence
STRUCTURE, FUNCTION AND MANAGEMENT IMPLICATIONS OF FLUVIAL SEDIMENTARY SYSTEMS
ISBN
1-901502-96-1
Statut éditorial
Publié
Date de publication
2002
Editeur⸱rice scientifique
Dyer FJ, Thoms MC, Olley JM
Série
IAHS PUBLICATION
Pages
373-380
Notes
Symposium on the Structure, Function and Management Implications of
Fluvial Sedimentary Systems, ALICE SPRINGS, AUSTRALIA, SEP 02-06, 2002
Fluvial Sedimentary Systems, ALICE SPRINGS, AUSTRALIA, SEP 02-06, 2002
Résumé
Four new technologies were combined to investigate morphological change
along a 4 km reach of the 1-km-wide, braided, gravel-bed Waimakariri
River on New Zealand's South Island. River-bed topography was surveyed
four times over 15 months, capturing the change caused by near-bankfull
flood events. Dry areas of river bed were surveyed either with digital
photogrammetry or airborne laser scanning. A combination of
remote-sensing and ground-based bathymetry was used to survey the beds
of wetted braids. Two video cameras, mounted 35 m above the river bed,
provide hourly daytime imagery of the central area of the study reach
and an invaluable record of the coherence of morphologic features. This
data set provides a view of form and process in a large braided river
that has hitherto only been possible in laboratory channels, and
identifies features such as low relief drainage basins that appear to
be unique to field-scale braided channels.
along a 4 km reach of the 1-km-wide, braided, gravel-bed Waimakariri
River on New Zealand's South Island. River-bed topography was surveyed
four times over 15 months, capturing the change caused by near-bankfull
flood events. Dry areas of river bed were surveyed either with digital
photogrammetry or airborne laser scanning. A combination of
remote-sensing and ground-based bathymetry was used to survey the beds
of wetted braids. Two video cameras, mounted 35 m above the river bed,
provide hourly daytime imagery of the central area of the study reach
and an invaluable record of the coherence of morphologic features. This
data set provides a view of form and process in a large braided river
that has hitherto only been possible in laboratory channels, and
identifies features such as low relief drainage basins that appear to
be unique to field-scale braided channels.
Web of science
Création de la notice
03/02/2011 15:41
Dernière modification de la notice
20/08/2019 13:58
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