湖北仙女山人工隧洞现代石笋气候学--灰度及其指示意义  

Grayscale and climatic instructions of modern stalagmite from artificial tunnel inside the Fairy Hill in Hubei

作　　者：杨勋林[1] 袁道先[1,2] 张月明[1] 黄帆[1] 孙玉川[1] 杨琰[1] 

机构地区：[1]西南大学地理科学学院/三峡库区生态环境教育部重点实验室,重庆400715 [2]中国地质科学院岩溶地质研究所/国土资源部、广西岩溶动力学重点实验室,广西桂林541004

出　　处：《中国岩溶》2012年第3期248-252,共5页Carsologica Sinica

基　　金：国家自然科学基金创新群体项目(编号40421101);国家自然科学基金项目(41072141);中国博士后科学基金(编号20090460713);重庆市自然科学基金项目(CSTC2009BB7107);中央高校基本科研业务费项目重大项目(XDJK2012A003)

摘　　要：以长江三峡岩溶地区仙女山隧洞内一根生长期为9年的现代石笋为研究对象,利用数字图像分析技术获得高分辨率的年际-季节时间尺度的石笋灰度序列。与当地器测气象数据进行对比分析发现,仙女山石笋灰度和降水量、温度具有相似的变化趋势:降水量越大,温度越高,石笋灰度值越大;降水量越小,温度越低,石笋灰度值越小。关于影响石笋灰度变化的主导因素是降水量还是温度,还需要进一步深入的研究。A 9-year contemporary stalagmite got from an artificial tunnel inside the Fairy Hill in the Three Gorges area is used as the research object, and high-resolution stalagmite gray level series on interannualseasonal time scale are obtained by means of digital image analysis in the study. In comparison with the local monitoring meteorological data, it is found that the grayscale of the contemporary stalagmite is of similar variation tendency with the monitoring precipitation and temperature data. That is to say, the greater the precipitation and the higher the temperature are, the bigger the grayscale of the contemporary stalagmite and vice versa. It is still need further study whether the leading factor affecting the grayscale is precipitation or the temperature.

关 键 词：石笋 气候学 灰度 温度 降水 三峡库区 

分 类 号：P512.2[天文地球—地质学] P46