Glaciological Studies on Mount Wrangell, Alaska, 1961
Glaciological Studies on Mount Wrangell, Alaska, 1961
复制标题
阿拉斯加兰格尔山冰川学研究，1961 年
作者：
C. Benson
在破火山口和邻近的一个被雪覆盖的火山口上10米处测量了温度、密度、硬度和地层剖面。在北纬62度4000-4300米的山顶地区计算出的相参数与格陵兰冰盖上干雪线附近的相同参数比较好。这种比较是在“假设的北极冰盖”框架内进行的兰格尔山研究的目的的一部分，其依据是格陵兰冰盖的行为就好像它属于一个大得多的冰盖，而这个冰盖是关于北极对称的。根据在破火山口和不活跃的火山口10米深处的测量，年平均温度为-20 ℃。在破火山口中心平滑区，年平均累积量大于100 cm水当量。破火山口的地表移动速度平均约为5厘米/天或~20米/年。
Measurements of temperature,density, hardnesss and stratigraphic profiles were made in the upper 10 m of the snow cover in the caldera and an adjacent snow-filled crater. Facies parameters calculated for the summit area, 4000-4300 m at 62 degrees N, compare well with the same parameters near the dry-snow line on the Greenland ice sheet. This comparison is part of the purpose of the Mt Wrangell study within the framework of the "hypothetical North Polar Ice Sheet", based on a concept that the Greenland ice sheet behaves as though it belonged to a much larger ice sheet, which is symmetrical about the North Pole. The mean annual temperature, based on the measurements at 10 m depth in the caldera and inactive craters, is -20C. The mean annual value of accumulation in smooth central areas of the caldera is >100 cm water equivalent. Velocity of surface movement in the caldera averages about 5 cm/day or ~20 m/yr.