归一化差值积雪指数NDSI（Normalized Difference Snow Index）是积雪识别中最常用的指数，但由于云的遮挡限制了MODIS NDSIäº§å“çš„åº”ç”¨ã€‚æœ¬æ–‡æå‡ºäº†ä¸€ç§åŸºäºŽé‚»è¿‘ç›¸ä¼¼åƒå ƒçš„MODIS NDSIäº§å“åŽ»äº‘æ–¹æ³•ï¼Œå¹¶åˆ†æžäº†æ— äº‘NDSI序列在积雪识别中的最优阈值。对于NDSIå½±åƒä¸ŠæŸä¸€ä¸ªäº‘é®æŒ¡çš„ç›®æ ‡åƒå ƒï¼Œé€‰å–ç›®æ ƒçš„n个邻近相似åƒ...

0167-8655/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.patrec.2012.07.003 ⇑ Corresponding author at: Department of Biostatis Health, United States. E-mail address: [email protected] (N.N. Kacho This paper addresses the quantification of glacier retreat through remote sensing. Specifically, we use multi-spectral Landsat satellite images for the estimation of glacier termi...

Salt-affected soils, caused by natural or human activities, are a common environmental hazard in semi-arid and arid landscapes. Excess salts in soils affect plant growth and production, soil and water quality and, therefore, increase soil erosion and land degradation. This research investigates the performance of five different semi-empirical predictive models for soil salinity spatial distribu...

Snow-covered area (SCA) is a key variable in the Snowmelt-Runoff Model (SRM) and in other models for simulating discharge from snowmelt. Landsat Thematic Mapper (TM), Enhanced Thematic Mapper (ETM + ) or Operational Land Imager (OLI) provide remotely sensed data at an appropriate spatial resolution for mapping SCA in small headwater basins, but the temporal resolution of the data is low and may...

Dust storms are known as hazardous problems in western part of Iran. Iraq is one of the main sources for dust storm arriving to the western part of Iran. The Radial Basis Function Network model (RBFN) has been used to assess wind erosion hazards in the source area of dust storms over several western Iranian cities. Normalized Difference Salinity Index (NDSI) was used to determine the changes in...

Approximately half of the world’s apple production occurs in East Asia, where Valsa canker (AVC) is a prominent disease. This disease affects bark tree, ultimately killing it and resulting significant economic loss. Visual identification diseased area bark, particularly early stages, extremely difficult. In this study, we conducted hyperspectral imaging trunks branches AVC-infected trees reveal...

dust storms are known as hazardous problems in western part of iran. iraq is one of the main sources for dust storm arriving to the western part of iran. the radial basis function network model (rbfn) has been used to assess wind erosion hazards in the source area of dust storms over several western iranian cities. normalized difference salinity index (ndsi) was used to determine the changes in...

A strip of 20th-century landscape woodland planted alongside a 17th to mid-18th century ancient and semi-natural (ASNW) was investigated by applied aerial spectroscopy using an unmanned vehicle (UAV) with multispectral image camera (MSI). simple classification approach normalized difference spectral index (NDSI), derived principal component analysis (PCA), enabled the identification non-native ...