CAJ | 학술논문

山地冰川对气候变化的响应最为敏感,在全球变暖的大背景下山地冰川和极地冰盖正在发生显著的变化.冰川运动速度的变化是气候变化的结果之一.乌鲁木齐河源1号冰川是中国西部山地冰川的代表,本文以1981-2007年27a的运动速度资料与1982年以来的季节运动速度资料为基础,结合冰川物质平衡、气温、降水等资料分析冰川运动速度对气候变化的响应.研究发现,27a来1号冰川运动速度下降趋势明显,冬、夏季节运动速度波动较大,但夏季运动速度较大.气候变化通过冰川物质平衡的改变作用于冰川运动速度,物质平衡的持续亏损最终导致了冰川运动速度的持续降低.夏季的高温与降水对冰川运动速度具有加速的作用.
산지빙천대기후변화적향응최위민감,재전구변난적대배경하산지빙천화겁지빙개정재발생현저적변화.빙천운동속도적변화시기후변화적결과지일.오로목제하원1호빙천시중국서부산지빙천적대표,본문이1981-2007년27a적운동속도자료여1982년이래적계절운동속도자료위기출,결합빙천물질평형、기온、강수등자료분석빙천운동속도대기후변화적향응.연구발현,27a래1호빙천운동속도하강추세명현,동、하계절운동속도파동교대,단하계운동속도교대.기후변화통과빙천물질평형적개변작용우빙천운동속도,물질평형적지속우손최종도치료빙천운동속도적지속강저.하계적고온여강수대빙천운동속도구유가속적작용.
Valley glacier is most sensitive to climate change under the background of global warming, and hence glaciers and ice caps of the world have changed significantly. Glacier movement is one of the results of climate variation. No. 1 Glacier at the headwater of the Urumqi River is the representative of valley glaciers in western China. In this paper, based on 27 years' (1981-2007) velocity data and seasonal velocity data in combination with glacier mass balance as well as temperature and precipitation data, the authors analyzed the response of the glacier movement to climate change. Researches show that in the 27 years the velocity tended to decrease obviously, seasonal velocity fluctuated considerably, and the velocity was higher in the summer than in the winter. Climate change acted on glacier movement by mass balance variation, and the uninterrupted loss of mass balance led to the continuous decrease of glacier velocity. It is also found that high temperature and high precipitation accelerated the glacier movement.