scholarly journals Landslide Inventory and Susceptibility Assessment for the Ntchenachena Area, Northern Malawi (East Africa)

10.5772/28091 ◽  
2012 ◽  
Author(s):  
Golden Msilimba
Keyword(s):  
East Africa ◽  
Landslide Inventory ◽  
Susceptibility Assessment

scholarly journals Polygon-based Landslide Inventory for Bandung Basin Using Google Earth

2021 ◽  
Vol 53 (2) ◽  
Author(s):  
Sukristiyanti Sukristiyanti ◽  
Ketut Wikantika ◽  
Imam A. Sadisun ◽  
Lissa F. Yayusman ◽  
Jevon A. Telaumbanua
Keyword(s):  
Landslide Susceptibility ◽  
Google Earth ◽  
Landslide Inventory ◽  
Susceptibility Assessment ◽  
Visual Interpretation ◽  
Research Papers ◽  
Source Areas ◽  
Landslide Susceptibility Assessment ◽  
Key Factor

A landslide inventory representing landslide locations is used as a key factor in landslide susceptibility assessment. This paper explores Google Earth (GE) for generating a polygon-based landslide inventory in Bandung Basin. How far GE can identify landslides and their boundaries, source areas, and types were discussed here. Visual interpretation of GE images supported by path tool in GE, official landslide reports, previous research papers, and media was performed. The result is a polygon-based landslide inventory consisting of 194 landslide areas and 194 landslide source areas during 1993-2020. The limitations of GE in preparing the landslide inventory are (1) not covering the timing of the landslide occurrences, (2) tricky to identify small landslides (<100 m2) in anthropogenically transformed areas, and (3) not able to distinguish between earth and debris of landslide material.

Landslide inventory and susceptibility assessment using multiple statistical approaches along the Karakoram highway, northern Pakistan

2021 ◽  
Vol 18 (3) ◽  
pp. 583-598
Author(s):  
Mian Luqman Hussain ◽  
Muhammad Shafique ◽  
Alam Sher Bacha ◽  
Xiao-qing Chen ◽  
Hua-yong Chen
Keyword(s):  
Landslide Inventory ◽  
Northern Pakistan ◽  
Susceptibility Assessment ◽  
Karakoram Highway ◽  
Statistical Approaches

scholarly journals Combined landslide inventory and susceptibility assessment based on different mapping units: an example from the Flemish Ardennes, Belgium

2009 ◽  
Vol 9 (2) ◽  
pp. 507-521 ◽  
Author(s):  
M. Van Den Eeckhaut ◽  
P. Reichenbach ◽  
F. Guzzetti ◽  
M. Rossi ◽  
J. Poesen
Keyword(s):  
Landslide Susceptibility ◽  
Model Performance ◽  
Environmental Information ◽  
Landslide Inventory ◽  
Grid Cells ◽  
Susceptibility Assessment ◽  
Susceptibility Maps ◽  
Validation Set ◽  
Slide Type ◽  
Single Pixel

Abstract. For a 277 km2 study area in the Flemish Ardennes, Belgium, a landslide inventory and two landslide susceptibility zonations were combined to obtain an optimal landslide susceptibility assessment, in five classes. For the experiment, a regional landslide inventory, a 10 m × 10 m digital representation of topography, and lithological and soil hydrological information obtained from 1:50 000 scale maps, were exploited. In the study area, the regional inventory shows 192 landslides of the slide type, including 158 slope failures occurred before 1992 (model calibration set), and 34 failures occurred after 1992 (model validation set). The study area was partitioned in 2.78×106 grid cells and in 1927 topographic units. The latter are hydro-morphological units obtained by subdividing slope units based on terrain gradient. Independent models were prepared for the two terrain subdivisions using discriminant analysis. For grid cells, a single pixel was identified as representative of the landslide depletion area, and geo-environmental information for the pixel was obtained from the thematic maps. The landslide and geo-environmental information was used to model the propensity of the terrain to host landslide source areas. For topographic units, morphologic and hydrologic information and the proportion of lithologic and soil hydrological types in each unit, were used to evaluate landslide susceptibility, including the depletion and depositional areas. Uncertainty associated with the two susceptibility models was evaluated, and the model performance was tested using the independent landslide validation set. An heuristic procedure was adopted to combine the landslide inventory and the susceptibility zonations. The procedure makes optimal use of the available landslide and susceptibility information, minimizing the limitations inherent in the inventory and the susceptibility maps. For the established susceptibility classes, regulations to link terrain domains to appropriate land rules are proposed.

Drawers of Water II: assessing change in domestic water use in East Africa

Waterlines ◽  
2003 ◽  
Vol 22 (1) ◽  
pp. 22-25 ◽  
Author(s):  
John Thompson ◽  
Ina Porras ◽  
Munguti Katui-Katua ◽  
Mark Mujwahuzi ◽  
James Tumwine
Keyword(s):  
East Africa ◽  
Water Use ◽  
Domestic Water

Coffee and qat on the Royal Danish expedition to Arabia – botanical, ethnobotanical and commercial observations made in Yemen 1762–1763

2015 ◽  
Vol 42 (1) ◽  
pp. 101-112
Author(s):  
I. Friis
Keyword(s):  
East Africa ◽  
Arabian Peninsula ◽  
Made In

In spite of widespread consumption of coffee in Europe at the time of the Royal Danish expedition to Arabia 1761–1767, little was known of the cultivation of coffee in Yemen and of the Arabian coffee export to Europe. Fresh leaves of qat were used as a stimulant on the Arabian Peninsula and in East Africa, but before the Royal Danish expedition to Arabia this plant was known in Europe only from secondary reports. Two members of the expedition, Carsten Niebuhr and Peter Forsskål, pioneered studies of coffee and qat in Yemen and of the Arabian coffee export. Linnaeus' instructions for travellers requested observations on the use of coffee, but otherwise Forsskål and Niebuhr's studies of coffee and qat were made entirely on their own initiative. Now, 250 years after The Royal Danish expedition to Arabia, coffee has become one of the world's most valuable trade commodities and qat has become a widely used and banned drug.

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