杜建括, 李双, 王淑新. 玉龙雪山白水1号冰川表面运动速度特征分析[J]. 云南大学学报(自然科学版), 2019, 41(2): 317-322. doi: 10.7540/j.ynu.20180149
引用本文: 杜建括, 李双, 王淑新. 玉龙雪山白水1号冰川表面运动速度特征分析[J]. 云南大学学报(自然科学版), 2019, 41(2): 317-322. doi: 10.7540/j.ynu.20180149
DU Jian-kuo, LI Shuang, WANG Shu-xin. Analysis of the surface velocity characteristics of Baishui Glacier No.1, Yulong Mountain[J]. Journal of Yunnan University: Natural Sciences Edition, 2019, 41(2): 317-322. DOI: 10.7540/j.ynu.20180149
Citation: DU Jian-kuo, LI Shuang, WANG Shu-xin. Analysis of the surface velocity characteristics of Baishui Glacier No.1, Yulong Mountain[J]. Journal of Yunnan University: Natural Sciences Edition, 2019, 41(2): 317-322. DOI: 10.7540/j.ynu.20180149

玉龙雪山白水1号冰川表面运动速度特征分析

Analysis of the surface velocity characteristics of Baishui Glacier No.1, Yulong Mountain

  • 摘要: 基于2011年9月—2013年9月冰川运动观测资料,对云南省丽江市玉龙雪山白水1号冰川运动速度特征进行了分析. 结果表明:观测区范围内,白水1号冰川主流线越靠近末端其水平运动速度越大,冰舌中部2012/2013年最大水平运动速度达46 m·a−1,至粒雪盆运动速度减小为25 m·a−1;冰川垂直运动速度受冰面坡度及裂隙影响较大,其垂直运动最大值出现在海拔4 773 m为12 m·a−1,最小值出现在海拔4 803 m为4 m·a−1. 受冰川底部滑动的影响,7—9月月均冰川运动速度明显快于全年月均运动速度.

     

    Abstract: Baishui Glacier No. 1 of Yulong Mountain, located in Lijiang City, Yunnan Province, is the southernmost in the Northern Hemisphere. The glacier flow velocities and features of Baishui Glacier No.1 are analyzed, based on the observation data about the Glacier’s ice flow from September 2011 to September 2013. The results show that in the target area, the ice flow velocity near to the end of the main flow line was much higher, that the maximum horizontal surface velocity was 46 m·a−1 in the middle of the ice tongue from 2012 to 2013, and that the velocity declined to 25 m·a−1 in the firn basin. Due to the influences of glacier slope and crack distribution, the maximum vertical velocity, found near the elevation of 4773 m, reached 12 m·a−1, and the minimum, found near the elevation of 4803 m, was 4 m·a−1. Because of the influence of basal sliding, the mean velocity of the ice flow from July to September was obviously higher than the monthly mean flow velocity for the whole year.

     

/

返回文章
返回