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采用DGPS测量技术对祁连山东段冷龙岭南坡老龙湾沟和北坡的宁缠河谷、中段的摆浪河谷、西段大雪山老虎沟的小冰期、新冰期和末次冰期的冰碛垄形态分别进行了实地测量和研究.以MAT-LAB软件为平台,应用人工神经网络方法模拟恢复了各个冰期的冰碛垄形态.结果表明:利用MAT-LAB人工神经网络方法,在保证模拟高程和实测高程之差不超过1m的情况下,可以提高工作效率;祁连山地区小冰期以来冰川退缩了0.56～0.73km,新冰期退缩的长度为小冰期的3.3～3.8倍,末次冰期冰川发育的山麓冰川遵循另外的形态变化规律;在空间上,祁连山地区的冰碛地貌发育受山谷形态影响,同一地区的冰碛垄的曲率遵循一定的规律.冷龙岭南北坡可能由于太阳辐射差异的影响,北坡各个期次的冰碛垄发育规模均小于南坡.
DGPS measurement technique was used to study the moraine ridge patterns of the Longdingwan ditch on the southern slope of the Lenglongling Mountains in the Qilian Mountains and the Ningguang Valley in the northern slope, the wavy ridge valley in the middle of the Qilian Mountains and the Proterozoic of Laohugou in the Daishan Mountain in the western segment of the Qilian Mountains And the field survey and research were carried out.With MAT-LAB software as a platform, the moraine ridge morphology of each glacial period was simulated by the artificial neural network method.The results show that: using the MAT-LAB artificial neural network method, The difference between them is less than 1m, which can improve the work efficiency. The glaciers receded 0.56 ~ 0.73km in the Qilian Mountains since the Little Ice Age, the length of the retreat in the Early Glacial Period was 3.3 ~ 3.8 times of that in the Little Ice Age, and the glacier foothills in the last glacial glacier followed another The morphological changes of the moraine in the Qilian Mountains are affected by the morphology of the valley.The curvature of the moraine ridge in the same area follows a certain rule.Due to the difference of solar radiation, The moraine ridge development scale is less than the southern slope.