Photogrammetric monitoring of glacier margin lakes
Photogrammetric monitoring of glacier margin lakes
复制标题
冰川边缘湖泊摄影测量监测
DOI:
10.1080/19475705.2014.939232
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Koschitzki
中科院分区:
文献类型:
--
作者:
Mulsow;Koschitzki
The growing number of glacier margin lakes that have developed due to glacier retreat have caused an increase of dangerous glacier lake outburst floods (GLOFs) in several regions over the last decade. This normally causes a flood wave downstream the glacier. Typically, such an event takes few to several hours. GLOF scenarios may be a significant hazard to life, property, nature and infrastructure in the affected areas. A GLOF is usually characterized by a progressive water level drop. By observing the water level of the lake, an imminent GLOF-event can be identified. Common gauging systems are often not suitable for the measurement task, as they may be affected by ice fall or landslides in the lake basin. Therefore, in our pilot study, the water level is observed by processing images of a terrestrial camera system observing a glacier margin lake. The paper presents the basic principle of an automatic single-camera-based GLOF early warning system. Challenges and approaches to solve them are discussed. First, results from processed image sequences are presented to show the feasibility of the concept. Water level changes can be determined at decimetre precision.
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DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
H. Maas;C. Mulsow;A. Wendt;G. Casassa
通讯作者:
G. Casassa
影响因子:
3.4
作者:
J. Glen
通讯作者:
J. Glen
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
H. Maas;G. Casassa;D. Schneider;E. Schwalbe;A. Wendt
通讯作者:
A. Wendt
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--
影响因子:
6.2
作者:
Ray Harris
通讯作者:
Ray Harris