Historical aerial and terrestrial photographs for the investigation of mass movement dynamics in the Ethiopian Highlands

Historical aerial and terrestrial photographs for the investigation of mass movement dynamics in the Ethiopian Highlands
复制标题

用于调查埃塞俄比亚高地群众运动动态的历史航空和地面照片

DOI:
10.1002/ldr.3220
复制
发表时间:
2019
影响因子:
4.7
通讯作者:
Nyssen
Nyssen
中科院分区:
农林科学2区
文献类型:
--
作者:
Kropáček;Vařilová;Nyssen

文献摘要

参考文献

被引文献

相似文献

埃塞俄比亚高原的边缘受到频繁的滑坡的影响,这些滑坡是由降水的季节性、火山物质的厚风化地幔和粗糙的地形造成的。我们使用数字高程模型和从1936年的航空照片时间序列中获得的正射图像分析了Dessie三个大型滑坡的三维动态。此外,我们利用重复摄影的基础上,从20世纪30年代和40年代的地面照片来分析景观变化。结果表明,在1936年以前,克拉地区湖相沉积物中的大型滑动带(25.4公顷)已经大致存在于目前的范围内。Doro Mezleya地区1986-1994年岩石滑坡的贫化材料量估计为1.82 106 m3,平均垂直厚度为48 m。此外,我们还描述了现今不活跃的温泉滑坡(12.9公顷)。我们记录了该地区作为补救措施进行的大规模重新造林以及土地覆盖和定居结构的快速变化。我们的结论是,三分之二的研究大型滑坡存在于1936年之前,因此,在过去的几十年里,人类对景观的压力增加,而不是引起的。此外,我们提供了一个概述埃塞俄比亚的历史航空照片的集合,我们讨论了他们的潜力和缺点大规模浪费研究。
The edges of the Ethiopian Plateau are affected by frequent landslides predisposed by pronounced seasonality in precipitation, thick weathering mantle of volcanic material, and rough relief. We analyzed the three‐dimensional dynamics of three large landslides in Dessie using digital elevation models and ortho‐images derived from a time‐series of aerial photographs reaching back to 1936. Furthermore, we utilized repeated photography based on terrestrial photographs from the 1930s and 1940s to analyze landscape changes. It was revealed that the large sliding zone (25.4 ha) in lacustrine sediments at Kerra locality existed approximately in the present extent already before 1936. The volume of depleted material of the 1986–1994 rock slide at Doro Mezleya locality was assessed as 1.82 106m3with mean vertical thickness of 48 m. Additionally, we described the nowadays inactive Hot Spring landslide (12.9 ha). We documented a large scale reforestation of the area carried out as a remediation measure and rapid changes in land cover and settlement structure. We conclude that two out of three studied large landslides existed before 1936 and thus are not induced by the increased human pressure on the landscape of the last decades. Additionally, we provide an overview about collections of historical aerial photographs of Ethiopia, and we discuss their potential and drawbacks for mass wasting studies.
用于山体滑坡评估的历史航空照片:两个案例
DOI: 10.1144/1470-9236/07-011
发表时间: 2007
影响因子: 1.4
作者:
J. Walstra;Neil Dixon;Jh Chandler
通讯作者: Jh Chandler
Dessie Graben(埃塞俄比亚沃洛)的地貌演化和当今过程
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者:
G. Fubelli;B. Abebe;F. Dramis;S. Vinci
通讯作者: S. Vinci
DOI: 10.1016/j.geomorph.2008.09.027
发表时间: 2009-04
期刊: Geomorphology
影响因子: 3.9
作者:
M. Eeckhaut;J. Moeyersons;J. Nyssen;A. Abraha;J. Poesen;M. Haile;J. Deckers
通讯作者: M. Eeckhaut;J. Moeyersons;J. Nyssen;A. Abraha;J. Poesen;M. Haile;J. Deckers
DOI: 10.1016/j.enggeo.2004.07.002
发表时间: 2005-02
影响因子: 7.4
作者:
T. Ayenew;G. Barbieri
通讯作者: T. Ayenew;G. Barbieri
DOI: 10.1016/s0169-555x(03)00057-6
发表时间: 2003-08
期刊: Geomorphology
影响因子: 3.9
作者:
C. J. Westen;F. L. Getahun
通讯作者: C. J. Westen;F. L. Getahun