This paper tries to develop a new slope investigation method using remote sensing on the ground. The method consists of "thermal infrared remote sensing" and "visible and near infrared remote sensing". This paper reports some results of fundamental experiments for applying the remote sensing to rock mass slope investigation. In the experiments, we used some kinds of rock samples, changing the color, dry specific gravity and degree of weathering. At first, we observed spectral reflectance and temperature of the surface of rock samples. Secondly, we calculated L*a*b* values from the spectral reflectance and calculated the rate of increment of temperature from the temperature. From the relationship between the observed data and properties of the samples, we recognize that it is possible to estimate the stage of weathering and the dry specific gravity. The results show the possibility of our investigation method by remote sensing on the ground for applying the actual rock slope.
