新发现

马山古洞；门头沟发现250万年前冰川遗迹。     

关于广西下震旦统泗里口组命名的建议

广西下震旦统“南沱组”一名引自峡东地区震旦系剖面的南沱组。本文根据区调成果三江泗里口剖面资料,认为两地区述及的“南沱组”无论从岩性、岩相及沉积环境均有较大差异,桂北地区属冰川-海洋沉积,峡东地区属大陆冰川沉积,二者为同期异相产物。因此,建议更名为“泗里口组”较适宜。     

大围山：《冰河世纪Ⅳ》的烙印

1934年,李四光来到江西庐山,看着眼前完美的U型谷、冰擦痕和冰臼,他彻底地被震撼了。这,就是存在了至少50万年的第四纪冰川啊。而在20世纪初,一些外国专家断言“中国绝不可能有第四纪冰川遗迹”。     

Development and Conservation of Glacier Tourist Resources —— A Case Study of Bogda Glacier Park

1 Introduction As a special kind of tourism, glacier tourism is popular to tourists all over the world owing to its meeting tourists’ needs for seeking after freshness, difference, surprise and risk. Differing from conventional tourism, glacier tour- ism has its special characters while there is little literature on it. It is of great significance to study its characters and seek after the harmonious development in exploitation and protection of glacier tourism resources. Glacier tourism refe…     

Chemical characteristics and environmental significance of fresh snow deposition on Urumqi Glacier No. 1 of Tianshan Mountains, China

Ice and snow chemistry of alpine glaciers is crucial for the research of regional atmospheric environment change. Fresh snow samples were weekly collected from Urumqi Glacier No.1 in the Tianshan Mountains, Xin- jiang, China, and the chemical characteristics and seasonal variations of major ions, mineral dust, δ18O and trace metals were measured. Results show that the concentrations of major ions in the snow are Ca2+ SO42- NH4+ NO3- Cl- Na+ Mg2+ K+, in which Ca2+ is the dominant cation, and SO42-is the dominant anion. All major ions have close positive correlations with each other except NO3-. δ18O shows positive correlation with air temperature change during the study period. Mineral dust particle and major ionic concentrations in fresh snow have obvious seasonal change, with high concentration in spring but low concentration in summer and autumn, which indicates that the chemical mass input from Asian dust activity to snow is very significant. Temporal changes of trace metals in fresh snow, e.g., Cd, Pb, Zn, Al, Fe, have shown that human-induced pollution of central Asian region also has large contribution to the snow chemistry on alpine glaciers of the Tianshan Mountains.     

从新中国邮票看中国地貌

正我国幅员辽阔,有着雄伟的河山和绚丽多彩的景色。本文将通过新中国邮票介绍国土资源的基础知识,展现我国地貌的概况。一、河谷河谷是一种线状延伸的倾斜凹地,是流水的侵蚀和堆积作用形成的。分为河床、河滩地、谷坡地。在山区,河床由基岩和粗大的冲击物组成。山区的河谷一般狭窄,两岸不规则,坡度较大,多成阶梯状。由于岩性的软硬和地质构造的不同,有些河谷还会受到差别侵蚀,形成瀑布。在平原地区河床宽,坡度小,水流缓,所以泥沙容易沉积而形成"地上河",例如:黄河。河流洪水期淹没的河床以外谷底部分叫做河滩地。这是由于河床受到流水的侧向侵蚀,凹岸后退,凸岸堆积逐步形成的。     

中国冰川温度研究40年回顾与建议

Many temperature measurements have been made on 29 glaciers in China since 1959. The regional thermal features of glaciers are now revealed. It is distinguished that there are three categories of temperature distribution in China, i.e., cold, temperate and polythermal. Temperate glaciers are located in the southeastern Tibetan Plateau. The heat conduction in the surface layer and the heat transfer within a glacier can be quantitatively described. Two-dimensional temperature distributions are gained for the Glacier No.1 at the headwaters of the Urumqi River in the Tianshan Mountains and for the Chongce Ice Cap in the West Kunlun Mountains. Geothermal flux is derived from measurements down to or closed to the bottom. The Tibetan Plateau is an area with high geothermal flux. The author suggests to measure more ice temperature by using the boreholes for extracting ice core, however, there is no need to repeatedly measure the temperature within the near-surface layer.     

近年来苏联的冰雪研究工作

介绍了近年来苏联在中亚高加索、西伯利亚、远东以及北极和南极等地区开展的冰雪研究工作。     

贡嘎山海螺沟冰川地质环境的基本特征

贡嘎山海螺沟为冰川地质作用的冰川谷,其中、下游河谷为古冰川谷,上游发育着现代冰川,它是横断山主峰贡嘎山地区冰川群中最宏大的一条冰川.自第四纪以来,强烈的冰川地质作用塑造了海螺沟流域特殊的山地与河谷地貌,因其距大城市较近,成为人们研究和观赏冰川奇观不可多得的地点.使之越来越受到中外游客的青睐.