Glacier inventory and recent glacier variations in the Andes of Chile, South America
Glacier inventory and recent glacier variations in the Andes of Chile, South America
复制标题
南美洲智利安第斯山脉的冰川库存和近期冰川变化
作者：
G. Barcaza;S. U. Nussbaumer;G. Tapia;Javier Valdés;J. García;Yohan Videla;Á. Albornoz;Víctor Arias
智利首个卫星衍生的冰川和岩石冰川清单，使用半自动程序从2000年至2003年的Landsat TM/ETM+图像中创建，以单一标准化格式呈现。在Altiplano， Palena省和巴塔哥尼亚冰原的外围的大冰川地区被盘点。智利冰川面积为23 708±1185 km2，其中碎屑覆盖冰川和岩石冰川面积约为3200 km2。冰川分布随纬度和海拔的气候梯度而变化，其中0.8%发生在沙漠安第斯山脉（17°30′-32°S）；3.6%在安第斯山脉中部（32-36°S）， 6.2%在湖区和帕莱纳省（36-46°S）， 89.3%在巴塔哥尼亚和火地岛（46-56°S）。利用Landsat 8图像对98个综合体更新至2015年的所有冰川覆盖区域和大小类别的冰川轮廓显示，受影响的主要是干净冰川（- 92.3±4.6 km2）的面积范围有所下降，而沙漠和安第斯山脉中部的碎屑覆盖冰川和岩石冰川的面积几乎没有变化。从这一新的清单中估算出的冰川属性为评估未来冰川响应气候变化的变化提供了有价值的冰川收缩空间格局。
ABSTRACT The first satellite-derived inventory of glaciers and rock glaciers in Chile, created from Landsat TM/ETM+ images spanning between 2000 and 2003 using a semi-automated procedure, is presented in a single standardized format. Large glacierized areas in the Altiplano, Palena Province and the periphery of the Patagonian icefields are inventoried. The Chilean glacierized area is 23 708 ± 1185 km2, including ~3200 km2 of both debris-covered glaciers and rock glaciers. Glacier distribution varies as a result of climatic gradients with latitude and elevation, with 0.8% occurring in the Desert Andes (17°30′–32° S); 3.6% in the Central Andes (32–36° S), 6.2% in the Lakes District and Palena Province (36–46° S), and 89.3% in Patagonia and Tierra del Fuego (46–56° S). Glacier outlines, across all glacierized regions and size classes, updated to 2015 using Landsat 8 images for 98 complexes indicate a decline in areal extent affecting mostly clean-ice glaciers (−92.3 ± 4.6 km2), whereas debris-covered glaciers and rock glaciers in the Desert and Central Andes appear nearly unchanged in their extent. Glacier attributes estimated from this new inventory provide valuable insights into spatial patterns of glacier shrinkage for assessing future glacier changes in response to climate change.
雪、冰和冰川百科全书
DOI：
10.1007/978-90-481-2642-2_289
发表时间：
2011
期刊：
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影响因子：
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作者：
Tuffen H
通讯作者：
Tuffen H