Constraints on spatial transference of rainfall-runoff relationships in semiarid basins drained by ephemeral streams
作者:
DIRKH. DE BOER,
期刊:
Hydrological Sciences Journal
(Taylor Available online 1992)
卷期:
Volume 37,
issue 5
页码: 491-504
ISSN:0262-6667
年代: 1992
DOI:10.1080/02626669209492614
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Field data on drainage basin response have a characteristic scale which is determined by the size of the basin investigated. As a rule, information obtained at one particular scale can be extrapolated over a limited scale range only. This study identifies the nature of constraints on spatial scale transference in a series of semiarid badland drainage basins ranging in area from < 1 to 202 260 m2. Research focussed on the rainfall-runoff relationship during a single rainstorm so that the temporal scale was kept constant. Spatial scale transference between systems of differing scale was restricted by morphological and functional constraints. Morphological constraints are caused by morphological elements present in large scale systems but absent in small scale ones. Functional constraints arise solely from the characteristics of the matter and energy flows in the systems of interest. Limits imposed upon spatial scale transferences by morphological and functional constraints are fuzzy rather than sharp in character.
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