Using Near-Surface Photogrammetry Assessment of Surface Roughness (NSPAS) to assess the effectiveness of erosion control treatments applied to slope forming materials from a mine site in West Africa

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dc.contributor.authorCampbell, Stephanie
dc.contributor.authorSimmons, Robert W.
dc.contributor.authorRickson, R. Jane
dc.contributor.authorWaine, Toby
dc.contributor.authorSimms, Daniel M.
dc.date.accessioned2018-09-10T11:02:16Z
dc.date.available2018-09-10T11:02:16Z
dc.date.issued2018-08-30
dc.description.abstractGeo-spatial studies are increasingly using photogrammetry technology because the cost of the equipment is becoming cheaper, the techniques are accessible to non-experts and can generate better quality topographic data than traditional approaches. NSPAS (Near-Surface Photogrammetry Assessment of Surface Roughness) was developed to quantify the micro-topographic changes in ground surface roughness caused by simulated rainfall, to better understand the comparative erodibility of two non-soil and one soil slope forming materials from a mine in West Africa. This innovative approach creates DEMs (digital elevation models) using image pairs acquired by near-surface stereo photogrammetry (<300 m), to measure surface roughness within Leica Photogrammetry Suite 2011 (LPS) in ERDAS Imagine software and ESRI Arc-GIS. NSPAS can readily quantify aggregate breakdown processes across a 0.02 m2 surface by accurately detecting 0.84 mm to 2.49 mm changes in surface topography. The methodology is advantageous to micro-scale (<1 cm2) studies that require a high number of accurate DEMs, because it will produce image pairs even when the target does not have contrasting surface features in shot, which can be a constraint for the automated technique Structure from Motion. This paper demonstrates how NSPAS is more suitable to assess erosion from slope forming materials that do not have a high content of large rocks (>2 mm) at the surface. With further development NSPASS has the capability to be used in many other types of geospatial investigations.en_UK
dc.identifier.citationStephanie Campbell, Robert Simmons, Jane Rickson, et al., Using Near-Surface Photogrammetry Assessment of Surface Roughness (NSPAS) to assess the effectiveness of erosion control treatments applied to slope forming materials from a mine site in West Africa. Geomorphology, Volume 322, Issue December, 2018, pp. 188-195en_UK
dc.identifier.issn0169-555X
dc.identifier.urihttps://doi.org/10.1016/j.geomorph.2018.08.027
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/13465
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectNear-Surface Photogrammetry Assessment of Surface Roughness (NSPAS)en_UK
dc.subjectSurface roughnessen_UK
dc.subjectErosionen_UK
dc.subjectSlope forming materialsen_UK
dc.titleUsing Near-Surface Photogrammetry Assessment of Surface Roughness (NSPAS) to assess the effectiveness of erosion control treatments applied to slope forming materials from a mine site in West Africaen_UK
dc.typeArticleen_UK

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