Published November 1, 2022 | Version v1
Dataset Open

High-resolution digital elevation models and orthomosaics generated from historical aerial photographs (since the 1960s) of the Bale Mountains in Ethiopia

Creators

  • 1. Department of Environmental Informatics, Faculty of Geography, Philipps-Universität Marburg, Deutschhausstraße 12, 35037, Marburg, Germany
  • 2. Remote Sensing and Geo-Informatics Stream, School of Earth Sciences, College of Natural and Computational Science, Addis Ababa University, Addis Ababa, 1176, Ethiopia
  • 3. Department of Geography, Vegetation Geography, Philipps-Universität Marburg, Deutschhausstraße 10, 35037, Marburg, Germany

Description

This dataset contains the results of photogrammetric processing (Digital Elevation Models, Orthomosaics and  subset data used for volumetric calculation and visualization) named: “DEM_1967.7z”: inside the zipped folder “1967_DEM.tif” (digital elevation model produced for the year 1967), “DEM_1984.7z”: inside the zipped folder “1984_DEM.tif” exist (digital elevation model produced for the year 1984). In addition, under “1967_Orthomosaic.7z" and "1984_Orthomosaic.7z” zipped folders, there are orthomosaic files produced namely, “1967_orthomosaic.tif” and "1984_orthomosaic.tif” for the year 1967 and 1984, respectively. The DEMs and Orthomosaics  subset from the results for sites (data example 1 and data example 2) reside under "Data_Examples.zip". Accuracy of the resulted data were assessed and the extracted elevation values are under "Accuracy_assessment.zip".  All DEMs and Orthomosaics are in GeoTIFF format in the Adindan UTM Zone 37 N (EPSG: 20137) projected coordinate system.

    Potential application of the presented dataset include:

1. watershed management

2. analyses of historical landscape change

3. detailed mapping and analyses of geological and archaeological features, as well as natural resources

4. analyses of geomorphological processes

5. socioecological patterns and dynamics

6. modelling and planning for telecommunications 

7. biodiversity research. 

The inputs for the above resulted DEMs and Orthomosaics are found under Zenodo repository "10.5281/zenodo.7271617". 

Notes

This research was funded by the German Research Council (DFG) in the framework of the joint Ethio-European Research Unit 2358 "The Mountain Exile Hypothesis: how humans benefited from and re-shaped African high-altitude ecosystems during Quaternary climatic changes". We thank the Geospatial Information Institute of Ethiopia for provided us the necessary data and documents; and the Ethiopian Wildlife Conservation Authority, the Philipps University of Marburg, the Ethiopian Wolf Project, and the Bale Mountains National Park for their cooperation and permission to conduct field work. We also very much appreciate the support of Mohammed Kedir, Hussein, Gash Kasim, Awol Assefa, Sofia, Wege Abebe, and Katinka Thielsen, without whom it would not have been possible to do the field work in the Bale Mountains. We thank Spaska Forteva for her help in arranging lab facilities.

Files

Data_Examples.zip

Files (40.9 GB)

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md5:228ddc43d75f2b0a6e0fd5ca39bec7b3
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Additional details

Related works

Is derived from
Dataset: 10.5281/zenodo.7271617 (DOI)