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フルテキストURLKJ00000156778.pdf ( 603.2KB ) 公開日 2010-04-19
タイトル裸地斜面に発達したリル網パターンの数値化
タイトルヨミラチ シャメン ニ ハッタツシタ リルモウ パターン ノ スウチカ
タイトル別表記The Quantification of Rill Patterns that Develop on Bare Hillslopes
作成者深田, 三夫
藤原, 輝男
作成者ヨミフカダ, ミツオ
フジワラ, テルオ
作成者別表記Fukada, Mitsuo
Fujiwara, Teruo
作成者所属山口大学工学部
内容記述(抄録等)Rill networks which developed along bare hillslopes because of rainfall have very complex patterns. It is impossible to know the rate of erosion with time until we express quantitatively the figure of the rill patterns. As the rill patterns are usually similar to the river networks, application of Horton'law to the rill networks has been tried. In this study, the degree of complication of rill patterns that develop on hillslopes is described as entropy and fractal dimension which has generally non-integer values, by applying the two geometrical concepts of Spectrum and that of Fractal geometry. The entropy of rill patterns can be calculated from the power spectrum which can be obtained by decomposing the rill patterns into the several single harmonic function. On the other hand, fractal dimension can be easily computed by computer graphics. In addition to this analysis, the applicability of Horton's law to rill patterns was also considered. As a result of applying this analysis to the rill patterns which develop on bare hillslopes, the entropy and the fractal dimension of rill pattrns were closely related to the number of bifurcations of the rill. And applying Horton's first and second laws to the rill patterns, it becomes clear that only Horton's first law can be applied to the rill patterns.
本文言語jpn
主題土木工学
資料タイプtext
ファイル形式application/pdf
出版者山口大学工学部
出版者ヨミヤマグチ ダイガク コウガクブ
NII資料タイプ紀要論文
ISSN0372-7661
NCIDAN00244228
学内刊行物(紀要等)山口大学工学部研究報告
掲載誌名山口大学工学部研究報告
掲載誌名別表記Memoirs of the Faculty of Engineering, Yamaguchi University
40
1
開始ページ189
終了ページ196
発行日1989-10
著者版/出版社版出版社版
備考本文データは国立情報学研究所において電子化したものである
リポジトリIDKJ00000156778
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/KJ00000156778