Gravel bed roughness determined from airborne laser scanning

Guo Hao Huang, Chi Kuei Wang

研究成果: Conference contribution

摘要

We use the airborne laser scanning (ALS) to scan the exposed dry surface of Nan-Shin river in Taiwan with a nominal point density of 100 points/m 2. Numerous studies showed that the fractal dimension is a good measure of the roughness of the gravel surface. The fractal dimension can be estimated from the slope of the log-log plot of the variogram. Because the gravel surface exhibits the anisotropic property, we first use variogram maps of the gravel surfaces to determine the anisotropic directions. Since the gravel surfaces show the self-affinity property, the directional variograms are then used for calculating the fractal dimension in the directions of maximum and minimum continuity. This study may lead to a better understanding of the roughness of the gravel surface using ALS data for the large-scale areas.

原文English
主出版物標題32nd Asian Conference on Remote Sensing 2011, ACRS 2011
頁面1927-1932
頁數6
出版狀態Published - 2011 12月 1
事件32nd Asian Conference on Remote Sensing 2011, ACRS 2011 - Tapei, Taiwan
持續時間: 2011 10月 32011 10月 7

出版系列

名字32nd Asian Conference on Remote Sensing 2011, ACRS 2011
3

Other

Other32nd Asian Conference on Remote Sensing 2011, ACRS 2011
國家/地區Taiwan
城市Tapei
期間11-10-0311-10-07

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信

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