Arid
DOI10.1002/esp.1609
A catchment-scale assessment of anabranching in the 143000 km(2) Fitzroy River catchment, north-eastern Australia
Amos, Kathryn J.; Croke, Jacky C.; Hughes, Andrew O.; Chapman, Joanne; Takken, Ingrid; Lymburner, Leo
通讯作者Amos, Kathryn J.
来源期刊EARTH SURFACE PROCESSES AND LANDFORMS
ISSN0197-9337
出版年2008
卷号33期号:8页码:1222-1241
英文摘要

This paper presents a catchment-scale investigation of anabranching in the moderately large 143 000 km(2) Fitzroy River catchment in north-eastern Australia. The primary aim is to determine whether mapped and remotely sensed data can provide useful information about the characteristics of anabranching in a catchment of this scale. Anabranching comprises 6% of the total channel network by length, and 24% of higher-order channels (those with catchment areas over 100 km(2)). Three anabranching planform morphologies are described, which occur in geographically distinct regions, and add to previous descriptions of anabranching rivers. Sinuosity and link length are calculated for all channels of the mapped channel network (a link is a stretch of river between two stream junctions). Slope, mean floodplain width, mean annual rainfall and underlying and catchment geology parameters are calculated for links of a stream network derived from a digital elevation model (DEM), in which each link has either a single channel or anabranching morphology. Anabranching and single channel links do not occupy different ranges of attribute values, and a logistic regression analysis was unable to predict anabranching. However, slope, catchment area, mean floodplain width, length and sinuosity parameters all have significantly different means when comparing single channel with anabranching links, although it is shown that the difference in mean floodplain widths is the result of its correlation with catchment area. Anabranching channels have a tendency towards shorter link lengths, lower sinuosities and lower valley slopes and occur at larger catchment areas than single channels. These differences are discussed in the context of published hypotheses regarding the cause of anabranching. However, the spatial resolution and precision of our data limit our ability to investigate controls on anabranching, which will require detailed measurement of variables at a reach scale. Copyright (C) 2007 John Wiley & Sons, Ltd.


英文关键词river pattern anabranching drainage network DEM remote sensing
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000258044700005
WOS关键词ARID CENTRAL AUSTRALIA ; DIGITAL ELEVATION MODEL ; CHANNEL-PATTERN ; SATELLITE IMAGERY ; NATURAL RIVERS ; CLASSIFICATION ; PLAINS ; SEDIMENTATION ; QUEENSLAND ; PREDICTION
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/157014
作者单位Univ New S Wales, Sch Phys Environm & Math Sci, ADFA, Canberra, ACT, Australia
推荐引用方式
GB/T 7714
Amos, Kathryn J.,Croke, Jacky C.,Hughes, Andrew O.,et al. A catchment-scale assessment of anabranching in the 143000 km(2) Fitzroy River catchment, north-eastern Australia[J],2008,33(8):1222-1241.
APA Amos, Kathryn J.,Croke, Jacky C.,Hughes, Andrew O.,Chapman, Joanne,Takken, Ingrid,&Lymburner, Leo.(2008).A catchment-scale assessment of anabranching in the 143000 km(2) Fitzroy River catchment, north-eastern Australia.EARTH SURFACE PROCESSES AND LANDFORMS,33(8),1222-1241.
MLA Amos, Kathryn J.,et al."A catchment-scale assessment of anabranching in the 143000 km(2) Fitzroy River catchment, north-eastern Australia".EARTH SURFACE PROCESSES AND LANDFORMS 33.8(2008):1222-1241.
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