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采用BG2003释光谱仪对北京清水河流域达摩沟、西北山沟的稀性泥石流物质选频释光特性进行研究,并将其与云南蒋家沟流域现代粘性泥石流物质进行比较。研究表明:北京清水河流域泥石流物质样品受热激发后,290nm、310nm、400nm、480nm释光响应最为明显。储能电子主要源自的能级为4.28eV、4.00eV、3.50eV、2.58eV。用532nm绿光激发后,310nm、480nm释光响应最为明显,相应的储能电子主要源自的能级为4.00eV、2.58eV。采用选频释光技术能够区分清水河流域和蒋家沟流域的泥石流物质。该事实对进一步探索采用选频释光技术进行泥石流断代及泥石流物源识别具有基础性意义。
Using BG2003 emission spectrometer, the characteristics of the frequency-dependent light-permutation of dilute debris flows in Damodor and northwestern ravines of Beijing’s Qingshui River Basin were studied and compared with the viscous debris flow in the Jiangjiagou watershed of Yunnan. The results show that the photoluminescence response of 290nm, 310nm, 400nm and 480nm is the most obvious when the samples of debris flow in Qingshui River Basin in Beijing are excited by heat. Energy storage mainly from the energy level of 4.28eV, 4.00eV, 3.50eV, 2.58eV. After excitation with 532nm green light, the luminescence response at 310nm and 480nm is the most obvious. The corresponding energy storage mainly comes from the energy level of 4.00eV and 2.58eV. The use of frequency-selective light-emitting technology can distinguish between the Qingshui River and Jiangjiagou watershed debris flow material. This fact is of fundamental significance to further explore the use of frequency-selective light-emitting technology for debris flow generation and debris source identification.