摘要
利用分形分维方法对黄河三角洲潮滩和潮沟的地貌特征进行了定量研究。结果表明，潮滩和潮沟的分维值可以较好地反映潮滩潮沟的发育演化规律。随着时间的推移和潮沟潮滩的进一步发育，黄河三角洲潮沟的分维值呈逐渐增大的趋势，而潮滩的分维值则呈逐渐减小的趋势，两者在分维值的变化上存在着负相关关系。该研究为黄河三角洲潮滩发育时空谱系的建立和深入研究提出了一种新方法和新的定量指标。
The morphologic characteristics of tidal flat and ti da l creek system in the Huanghe River Delta was studied by fractal geometry method .Based on the approach of box dimension,fractal dimensions of the tidal creeks a nd tidal flats in the delta were calculated using aerial photo images in 1982 and actual flat measured data in 1984 separately. The result shows that fractal dimension could give a very good expression to the development and evolution of th e tidal creeks and tidal flats in the delta. It was found that:(1) the fractal dimension value of tidal creek in the Delta intends to become bigger with the tim e,meanwhile its morphological development is more complex;(2) the fractal dimens ions of the tidal flat and of the river end channels become smaller with the time,while their morphological developments intend to be simpler and smoother;(3) the fractal dimensions of the tidal flat and of the tidal creek on it are inverse ly related.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2001年第1期74-80,共7页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金资助项目,49776305号
关键词
黄河三角洲
潮滩
潮沟
分维
The Huanghe River delta
Tidal flat
Tidal creek
Fractal
