Basin Environment Analysis Using Multi-Dimensional High-Resolution Information Simultaneously Obtained by Aircraft, Satellite and Ground-Based Observations

1)研究了航空MSS热带数据与裸地、森林和水域地表温度的回归关系，探讨了感热通量的流域尺度估算，在分析地表温度与高程/方向关系的基础上，获得了地表温度的日变化。2)利用不同空间分辨率的飞机和卫星遥感图像：Takara比较了机载MSS、SPOT-HRV、JERS-OPS、Landsat-TM获取的4种不同空间分辨率的RS图像的分类精度。Takara和Shibano利用退化算法获得的图像考察了空间分辨率对分类精度的影响，研究了作为不同特征区域的森林单元在R-IR样地形状和各种v…More植被指数值方面的差异。3)基于RS数据和地面观测的水热循环建模：Kondoh将热红外数据应用于描述流域水和能量流动的模型。他发现了城市地区的三维结构与地表和空气温度的分布之间的对应关系。他提出了一种基于卫星图像获得的植被指数估算蒸发比的方法，并利用现有的全球数据集绘制了大陆尺度的蒸发分布。4)基于数字高程模型（DEM）的径流分析模型：在立川大学森林的20 m DEM中引入三角形不规则网络（TIN）对流域进行精确描述，并将径流模型与山坡和河道网络上的水流路径方法相结合，再现了白坂子流域的降雨径流。5) Nishio总结了这些结果，以书籍的形式出版了这次合作研究的最终报告，并分发给了日本的相关研究者。少

1) Estimation of sensible heat flux in a basin in the University Forest in Aichi : Shibano investigated the regression relationship between the thermal band data of airborne MSS and surface temperature in bareland, forest and water areas, He also discussed basin-scale estimation of sensible heat flux, obtaining diurnal change in surface temperature based on analysis of the relationship between surface surface temperature and elevation/orientation.2) Use of aircraft and satellite remote sensing (RS) images of various spatial resolutions : Takara compared the classification accuracy of four RS images of different spatial resolutions acquired by the airborne MSS, SPOT-HRV, JERS-OPS, Landsat-TM.The effect of spatial resolution on classification accuracy was examined by using images obtained by a degradation algorithm, Takara and Shibano investigated the difference of forest units selected as areas of different characteristics, in terms of the shape of R-IR plots and the values of various v … More egetation indeces.3) Modeling of water and heat cycle using RS data and ground-based observations : Kondoh applied thermal infrared data to a model describing water and energy flow in basins. He found the the correspondence between the three-dimensional structure of urban areas and the distribution of surface and air temperatures. Proposing a method of estimating the evaporation ratio based on the vegetation index obtained by satellite images, he used an existing global dataset and mapped continental-scale evaporation distribution.4) Runoff analysis model based on a digital elevetion model (DEM) : Uding 20-m DEM for the University Forest, Tachikawa introduced triangular iregular network (TIN) for precise description of river basins, He reproduced rainfall-runoff in the Shirasaka sub-basin by coupling the runoff model with the water flow routing method on hillslopes and in channel networks.5) Summarizing these results, Nishio published the final report of this co-operative research in book form and distributed it to related investigators in Japan. Less