Four debris flow samples were separated from Nidepin

Duozhao and Dawazigou valleys in Jiangjiagou valley area

Yunnan province. They were measured with BG2003 luminescence spectrograph. The characteristic spectra of the selected frequency luminescence of samples from the different locations were obtained. The wave length of emission photons from samples of Dawazigou valley and Jiangjia valley are 300

310

320

400 and 460 nm when it was using blue light (488 nm) excited. When the green light (532 nm) has been used to excited

the wave length of emission photons from samples of Dawazigou valley and Duozhao valley are similar high at 310 and 320 nm. Furthermore

using the green light excited the samples from desert sand at the same lab condition; the number of absorbed photons of samples from desert sand is much higher than from debris flow.