【摘要】 论证了在稳定状态时的冰川平衡线即零平衡线（ＥＬＡ０）处的比净平衡大致等于整个冰川的平均净平衡。提出了ＥＬＡ０的直接测定方法、误差范围以及利用冰川中值高度计算ＥＬＡ０的公式。认为可以利用ＥＬＡ０的特征简化冰川物质平衡的观测及计算，以及利用冰川编目资料大面积估算冰川物质平衡状况的可能性。更多还原

【Abstract】 Recently, a general concept that mass balance and its components versus altitude curves are stable have been widely accepted, so that the authors suggest, based on observations on many glaciers, that mass balance and its components at the steady state equilibrium line altitude ( ELA 0) equal their average values on a glacier respectively. Through statistic analyses of mass balance series of the glaciers in different mountains in the world, it is discovered that the ELA 0 does not substantially change, i.e., ELA 0 is not subject to the influence of climate change. If the glacier geometry not changes too much, observation, calculation and prediction can therefore be made based on ELA 0 level instead of whole glacier. Further analysing the relationship between ELA 0 and other glacial levels (such as ELA i, ELA a H med ), the anthors propose that the ELA 0 method can be applied to mass balance calculation and prediction on any glaciers without systematic observation.更多还原