Radio-echo sounding and ice volume estimates of western Nordenskiöld Land glaciers, Svalbard
Radio-echo sounding and ice volume estimates of western Nordenskiöld Land glaciers, Svalbard
复制标题
斯瓦尔巴群岛 Nordenskiöld Land 西部冰川的无线电回波探测和冰量估计
作者：
E. Vasilenko;F. Navarro;J. Otero;J. Lapazaran;I. Lavrentiev;Y. Macheret;F. Machío;Andrey;F. Glazovsky
摘要作为正在进行的工作的一部分，以获得一个可靠的估计斯瓦尔巴群岛冰川的总冰量及其对海平面上升的潜在贡献，我们在这里提出的体积计算，详细的误差估计，为10个冰川在西部诺登斯凯尔德土地，中部斯匹次卑尔根群岛，斯瓦尔巴群岛。体积估计值是基于1999-2012年期间几次实地活动收集的GPR检索冰厚数据的密集网络。总体面积和体积分别为116.06 ± 4.53 km 2和10.439 ±0.373 km 3，而单个面积、体积和平均冰厚分别为2.6-50.4 km 2、0.08-5.54 km 3和29-108 m。体积/面积比例关系高估了这些冰川的总体积高达35%，相对于我们的计算。根据雷达图中的散射模式，我们还分析了这些冰川的热液结构。十个中有九个是多温的，只有一个是完全冷的。
Abstract As part of ongoing work to obtain a reliable estimate of the total ice volume of Svalbard glaciers and their potential contribution to sea-level rise, we present here volume calculations, with detailed error estimates, for ten glaciers on western Nordenskiöld Land, central Spitsbergen, Svalbard. The volume estimates are based upon a dense net of GPR-retrieved ice thickness data collected over several field campaigns spanning the period 1999-2012. The total area and volume of the ensemble are 116.06 ± 4.53 km2 and 10.439 ±0.373 km3, respectively, while the individual areas, volumes and average ice thickness lie within 2.6-50.4 km2, 0.08-5.54 km3 and 29-108 m, respectively. Volume/area scaling relationships overestimate the total volume of these glaciers by up to 35% with respect to our calculation. On the basis of the pattern of scattering in the radargrams, we also analyse the hydrothermal structure of these glaciers. Nine of the ten are polythermal, while only one is entirely cold.