Photogrammetric monitoring of glacier margin lakes

Photogrammetric monitoring of glacier margin lakes
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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:
Geomatics, Natural Hazards and Risk
影响因子:
--
通讯作者:
Koschitzki
Koschitzki
中科院分区:
--
文献类型:
--
作者:
Mulsow;Koschitzki

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近十年来,由于冰川退缩而形成的冰川边缘湖数量不断增加,导致一些地区危险的冰川湖泊溃决洪水(GLOFs)增加。这通常会导致冰川下游的洪水浪潮。通常,这样的事件需要几个小时到几个小时。GLOF情景可能对受影响地区的生命、财产、自然和基础设施造成重大危害。GLOF通常以水位逐渐下降为特征。通过观察湖面的水位,可以确定即将发生的glof事件。普通的测量系统往往不适合测量任务,因为它们可能受到冰落或湖盆滑坡的影响。因此,在我们的初步研究中,水位是通过处理陆地相机系统观测冰川边缘湖泊的图像来观测的。本文介绍了一种基于单摄像机的GLOF自动预警系统的基本原理。讨论了挑战和解决方法。首先,给出了处理后的图像序列的结果,以证明该概念的可行性。水位的变化可以精确到分米。
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.
摄影测量冰川湖溃决洪水预警系统试点研究
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
DOI: --
发表时间: 1954
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
(2001)
DOI: --
发表时间: --
期刊:
影响因子: --
作者:
通讯作者: --
DOI: 10.2307/623002
发表时间: 1988
期刊: Catena
影响因子: 6.2
作者:
Ray Harris
通讯作者: Ray Harris