@inbook{3be3dc650b4841cdb31f224d2256f347,
title = "The influence of aggradation rate on braided alluvial architecture: field study and physical scale modelling of the Ashburton gravels, Canterbury Plains, New Zealand",
abstract = "Theoretical process-based models of braided alluvial architecture suggest that aggradation rate is a primary controlon the geometry, stacking and heterogeneity of sedimentary deposits. This hypothesis is tested at the scale of thechannel and bar using a combined field and flume modelling study, which quantifies the impact of a change inaggradation rate on the frequency of occurrence and geometry of the key depositional units that dominate coarsegrained,braided alluvial architecture. Aggradation of a 1 : 50 scale model of the braided Ashburton River, NewZealand, produces realistic alluvial architecture that closely corresponds to 7 km of logged field prototype outcrop.A twofold change in aggradation rate in the flume model and an order-of-magnitude change in the field outcrop,have no influence on the geometry and vertical distribution of fine- and coarse-grained depositional niches.Braided alluvial architecture at the channel scale therefore is determined by the local {\textquoteleft}instantaneous{\textquoteright} aggradationrate, related to individual flood events, rather than the long-term, regional aggradation rate.",
author = "Philip Ashworth and J.L. Best and J. Peakall and J.A. Lorsong",
year = "1999",
month = jan,
day = "1",
language = "English",
isbn = "9780632053544",
series = "Special Publication of International Association of Sedimentologists",
publisher = "Blackwell Science",
pages = "333--346",
editor = "N.D. Smith and J. Roger",
booktitle = "Fluvial Sedimentology VI",
}