Study on the River-Channel Change by Satellite Image Processing

卫星图像处理研究河道变化

• 批准号: 08650604
• 负责人: UTAMI Tadashi
• 金额: $ 1.22万
• 依托单位: Wakayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650604/
• 关键词: Satellite Images; Image Processing; Braided Channel; Meandering Channel; Channel Sihft; Channel Change; 網状流路; 下流遷移

1. Study on the Analyzing Method of Satellite ImagesIn order to survey the channel shifts of large rivers, the method to superpose two satellite images was developed ; By correlating photo-density distributions over small areas around some static points in one satellite image to those in another image, relative shift distances, rotation angles and the enlargement factor between these two images were calculated.2. Study on the Channel Changes of Large RiversBy using above method, satellite images taken at different times were compared each other, and river channel changes of the Brahmaputra, Meghna and Gangis in Bangladesh at each time were examined. As the results it was clarified that the river is comprised of braided regions and meandering regions and each region sifts downstream as time passes.The shifting velocities of meandering phase of each channel and those of regions were also examined.

1.卫星图像分析方法研究为了测量大型河流的河道变化，提出了两幅卫星图像的叠加方法，通过对两幅图像中某些静止点周围小区域的光密度分布进行相关，计算出两幅图像之间的相对位移距离、旋转角度和放大因子.利用上述方法，对不同时期的卫星图像进行对比，并对孟加拉国雅鲁藏布江、梅克纳河和恒河的河道变化进行了研究。结果表明，黄河由辫状河和曲流河两部分组成，各部分随时间推移向下游推移，并对各河道曲流相和各区域曲流相的移动速度进行了分析。

项目成果

Y.Muramoto, T.Utami, K.Hasegawa, Y.Fujita, T.Hosoda, K.Kanda, N.Nagata: "Morphological Behaviours of the River Meghna" Final Report, Topic 3, Japan Bangladesh Joint Study Project on Flood. 60-72 (1997)

Y.Muramoto、T.Utami、K.Hasekawa、Y.Fujita、T.Hosoda、K.Kanda、N.Nagata：“梅格纳河的形态行为”最终报告，主题 3，日本孟加拉国洪水联合研究项目。

Y.Muramoto,T.Utami 他: "Morphological Behaviours of the River Meghna" FINAL REPORT of JAPAN-BANGLADESH JOINT STUDY PROJECT ON FLOODS. TOPIC 3. 60-72 (1997)

Y.Muramoto, T.Utami 等人：“梅格纳河的形态行为”日本-孟加拉国洪水联合研究项目最终报告 3. 60-72 (1997)

宇民 正: "河道変遷調査への衛星画像解析の適用" 水高学論文集. 41. 965-970 (1997)

Tadashi Unami：“卫星图像分析在河道变化调查中的应用”《水工学杂志》41. 965-970 (1997)。

T.Utami, Y.Muramoto: "Application of Satellite Image Analysis for the Cahnnel Change Survey" Annual Journal of Hydraulic Engineering, JSCE. Vol.41. 965-970 (1997)

T.Utami、Y.Muramoto：“卫星图像分析在渠道变化测量中的应用”水利工程年度期刊，JSCE。

宇民正: "河道変遷調査への衛星画像解析の適用" 水工学論文集. 41. (1997)

Masaru Umi：“卫星图像分析在河道变化调查中的应用”水利工程学报41。（1997）