Vis-NIR reflectance spectra of Australia white sand wetted with water and dried in ambiant air at 38°C

In order to investigate the spectral behavior of humidity on sand spectra, we have acquired laboratory reflectance spectra of a sand containing various proportion of water. Water was deposited on a dry sand (previously dried in an oven at 40°C during one night). During the experiment, the sample is then dried, under the sun at 38°C. A spectrum is acquired every 5 minutes with an ASD FieldSpec3FR. This experiment was done on Australia white sand

为探究湿度对砂土光谱的响应特性，本研究制备了含不同含水率的砂土样本并采集其实验室反射光谱数据。实验所用砂土先经40℃烘箱烘干过夜，随后将不同比例的水分添加至干砂土中。实验过程中，将试样置于38℃阳光下自然干燥，并使用ASD FieldSpec3FR光谱仪每5分钟采集一次光谱数据。本实验采用澳大利亚白砂土作为实验材料。