斯诺斯科冰川的冰川质量平衡,乔治国王岛
Wilson Suarez1,2, Cinthya Bello3, Rolando Cruz4
1National Service of Meteorology and Hydrology of Peru/SENAMHI, St. Cahuide 785, Jesús María, Lima, Perú.
Anais da Academia Brasileira de Ciencias
|December 13, 2023
概括
兹诺斯科冰川连续两年 (2018-2020年) 经历了负净质量平衡. 这项研究提供了关于南极半岛冰川变化的关键数据,南极半岛是一个难以接近的地区.
科学领域:
- 冰川学的冰川学
- 气候科学 气候科学
- 南极研究南极研究
背景情况:
- 兹诺斯科冰川位于南极半岛南沙特兰群岛的乔治王岛上.
- 了解冰川质量平衡对于监测极地地区气候变化影响至关重要.
- 该研究区面临着重大可访问性挑战.
研究的目的:
- 确定Znosko冰川2018-2019年和2019-2020年期间的净质量平衡.
- 评估冰川面积和平衡线高度 (ELA) 的变化.
- 为南极半岛的区域冰川学研究提供数据.
主要方法:
- 2018年2月在冰川消融区安装了19个.
- 2019年2月和2020年2月份对注的监测.
- 无人驾驶飞行器 (UAV) 飞行的应用,用于冰川范围内的监测和地球形态变化检测.
- 使用五种插值方法计算特定净资产余额.
- 在积聚区进行钻探.
主要成果:
- 冰川面积在2020年被确定为1.71±0.02平方公里.
- 平均特异性净质量平衡为-590.7±46.6毫米的水当量 (w.e.). 在2018-2019年的时间里.
- 平均特定净质量平衡为-686.7±28.2毫米 w.e. 在2019-2020年期间.
- 平衡线高度 (ELA) 在2018-2019年记录在146.5±18.2米,在2019-2020年记录在144.2±8.3米.
结论:
- 兹诺斯科冰川在两年均呈现负净质量平衡,与区域趋势一致.
- 这些发现凸显了南极半岛正在进行的冰川撤退.
- 该研究成功地从一个难以进入的地区获得了冰川学数据.
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