北极新奥尔松地区Austre Lovénbreen冰川温度变化特征  

Ice Temperature Characteristics of the Austre Lovénbreen Glacier in NY-lesund,Arctic Region

作　　者：孙维君[1] 闫明[2] 艾松涛[3] 朱国才[4] 王泽民[3] 刘雷保[2] 徐跃通[1] 任贾文[4] 

机构地区：[1]山东师范大学地理与环境学院,山东济南250014 [2]中国极地研究中心,上海200136 [3]武汉大学中国南极测绘研究中心,湖北武汉430079 [4]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000

出　　处：《武汉大学学报（信息科学版）》2016年第1期79-85,共7页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金(41476162;41401074);中国博士后科学基金(2014M551952);国家社会科学基金(12BJY058)~~

摘　　要：冰川温度是冰川最重要的物理参数之一。2009-2011年间,在北极新奥尔松地区Austre Lovénbreen冰川上B_2、E_2和F点开展了20m浅层冰温监测工作。结果表明,三点冰温曲线在春季5月表现为冷季型,秋季9月属于暖季型。在9m深度以下,E2点冰温总是要比B2和F点低。三点处冰温活动层下界的深度都为14m,冰温年平均值分别为-2.76、-3.23和-2.84℃。随着海拔的升高,B2和E2点之间20m深处冰温递减率（0.3℃·100m^-1）要大于10m深处的（0.15℃·100m^-1）。三点在10m深处冰温比近地层气温要高1-4℃,这也显示了冰川融水再冻结释放的潜热导致冰川升温的重要性。Ice temperature is one of the most important physical parameters,during the period from2009 to 2011,observations of ice temperature were carried out on the Austre Lovénbreen glacier in the NY-lesund of the arctic region at the points B2,E2 and F,in the layer 20 mbelow the surface.Ice temperature curves at these three points showed a cold season in May and warm season in September.Below the 9mdepth,the ice temperature at the point E2 was lower than that at points B2 and F.The lower boundary depth of active ice temperature layer at the three points was 14 mdeep,with annual mean temperature of-2.76、-3.23and-2.84℃.With increasing altitude,the lapse rate in the ice temperature at the 20mdepth（0.3 ℃·100m^-1）was higher than that at 10mdepth（0.15 ℃·100m^-1）.Ice temperatures at the 10 mdepth were higher than the calculated mean annual air temperatures by 1~4℃,demonstrating the impact of refreezing melted glacier surface water on the release of latent heat,causing increasing ice temperature.

关 键 词：北极地区 Austre Lovénbreen冰川 冰川温度 

分 类 号：P237.9[天文地球—摄影测量与遥感]