【摘要】 纳尔逊冰帽是南设得兰群岛的一个小冰帽，受海洋性气候影响冰帽上降水丰富，冰温较高。冰帽表面运动速度完全由冰帽表面形态和冰帽底床形态所控制，其中Ｅ剖面更为复杂。冰帽驱动应力基本小于１００ｋＰａ。由Ｖ／Ｚ～Ｚａ曲线得到在Ｖ／７为０．６～３×１０￣（－９）范围内的流动参数：ｎ约为１；Ｂ≈４．３×１０￣（１０）ｄｙｎｅｓｃｍ￣（－２）ｓｅｃ。这表明在低应力区，冰体流动更接近牛顿流体。更多还原

【Abstract】 The Nelson Ice Cap is a small ice cap in the South Shertland Island in the Antarctica.The precipitation is abundant and the ice temperature is high due to the influence of sub-Antarctic maritime climate.The surface velocity of the, Nelson Ice Cap is mainly controlled by its surface and bedrock topography. Along the transection E the velocity distribution is more complicated.The driving stress is basically below 100 kPa.From V/Z～Za curve with V/Z value ranging in 0.6～3×10￣(-9), we have obtained that the flow parameters n approrimately equals 1 and B≈4. 3× 10￣(10)dynes cm￣(-2)sec. We assume that the glacier ice is a Newton fluid in the low stress region.更多还原