Thursday, May 25, 2017

New paper: using high resolution satellites to map agricultural practices in Kenya


My latest paper (Ayana et al. 2017) describes a method we used to map drainage ditches and furrows (a few examples shown above) on farms in Kenya (specifically the Sasumua region of the Upper Tana, Northwest of Nairobi) using high-resolution satellite imagery, and has a rough analysis showing that these features could be reducing sediment export in the study area by about 80%. The technical aspect which is the core of the paper will not be of interest to many people reading this. But the key point is that it's important to have this information to build a reasonable water quality model of the area, and this method makes acquiring that information possible (it would be too expensive to map via field work alone). You can download it from http://www.tandfonline.com/eprint/rE79XqPNAqIawt7ndwQq/full and if I use up my 50 free eprints I'll put a copy on my personal web site.

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