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
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发表时间:
2019
影响因子:
4.7
通讯作者:
Nyssen
中科院分区:
文献类型:
--
作者:
Kropáček;Vařilová;Nyssen
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.
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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
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
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
影响因子:
7.4
作者:
T. Ayenew;G. Barbieri
通讯作者:
T. Ayenew;G. Barbieri
影响因子:
3.9
作者:
C. J. Westen;F. L. Getahun
通讯作者:
C. J. Westen;F. L. Getahun