行政院國家科學委員會專題研究計畫成果報告:即時加熱退火隨機碎形河網寬度函數生成之研析及其於水文規劃之應用
Date Issued
2004
2004-07-31
Date
2004
2004-07-31
Author(s)
王如意
DOI
922211E002038
Abstract
The synthetic river networks are often generated from
the “recursive replacement algorithm.” The recursive
process starts with an initiator, then it is substituted
with the generator and subsequently each segment of
the generator becomes an initiator, being substituted
again. Such a single-generator generation algorithm,
however, may not really reflect the natural river
network of the basin due to the uniqueness of
Taiwan’s geomorphologic and hydrologic conditions.
With the above considerations in this study, the width
function and multifractals theory are adopted to
generate the fractal river networks which are more
multiple and flexible. In this study, the heating or
annealing theory and random fractal generation are
proceeded to explore the suitable properties of the
river network for a basin. The generalized equations
for width function of random fractal river network are
needed to induce by the real-time heating and
annealing process of width function. Accordingly, the
width-function based geomorphologic instantaneous
unit hydrograph model (WF-GIUH model) can be
built up. And various numerical experiments are
carried out in order to explore the random processes in
channel networks generation. The study is prospective
with an aspect to the exploration of an appropriate
random fractal generation algorithm, offers another
specific method to evaluate the geomorphologic
characteristics of the hillslope watersheds and be
referable to the hydrological simulation for project
watersheds.
Subjects
Random fractal generation
Heating and
annealing theory
annealing theory
Width function
Geomorphologic
instantaneous unit hydrograph(GIUH)
instantaneous unit hydrograph(GIUH)
Publisher
臺北市：國立臺灣大學生物環境系統工程學系暨研究所
Type
report
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