Articles | Volume 1, issue 2
Original research article
10 Jul 2015
Original research article |  | 10 Jul 2015

Gully geometry: what are we measuring?

J. Casalí, R. Giménez, and M. A. Campo-Bescós

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Cited articles

Campo-Bescós, M. A., Flores-Cervantes, J. H., Bras, R. L., Casalí, J., and Giráldez, J. V.: Evaluation of a gully headcut retreat model using multitemporal aerial photographs and digital elevation models, J. Geophys. Res.-Earth, 118, 1–15, 2013.
Casalí, J., López, J. J., and Giráldez, J. V.: Ephemeral gully erosion in southern Navarra (Spain), Catena, 36, 65–84, 1999.
Casalí, J., Loizu, J., Campo, M. A., De Santisteban, L. M., and Álvarez-Mozos, J.: Accuracy of methods for field assessment of rill and ephemeral gully erosion, Catena, 67, 128–138, 2006.
Castillo, C., Taguas, E. V., Zarco-Tejada, P., James, M. R., and Gómez, J. A.: The normalized topographic method: An automated procedure for gully mapping using GIS, Earth Surf. Proc. Land., 39, 2002–2015, 2014.
Evans, M. and Lindsay, J.: High resolution quantification of gully erosion in upland peatlands at the landscape scale, Earth Surf. Proc. Land., 35, 876–886, 2010.
Short summary
Despite gullies having been intensively studied in the past decades, there is no general consensus on such basic aspects as the correct determination of the geometry (width and depth) of these erosion features. Therefore, a measurement protocol is proposed to characterize the geometry of a gully by its effective width and effective depth, which, together with its length, would permit the definition of the equivalent prismatic gully (EPG); this would facilitate the comparison between gullies.