The impact of hydrogeomorphological characteristics on gullying processes in erosion-prone geological units in parts of southeast Nigeria

References

• Acharya, G., Cochrane, T., Davies, T., & Bowman, E. (2011). Quantifying and modeling post-failure sediment yields from laboratory-scale soil erosion and shallow landslide experiments with silty loess. Geomorphology, 129, 49–58.
   Web of Science ®Google Scholar
• Akpan, A. E., George, N. J., & George, A. M. (2009). Geophysical investigation of some prominent gully erosion sites in Calabar, southeastern Nigeria and its implications to hazard prevention. Disaster Advances, 2, 46–50.
   Google Scholar
• Bell, F. G. (2007). Engineering Geology (2nd ed.). Oxford UK: Butterworth-Heinemann, Elsevier Ltd, 593p.
   Google Scholar
• Chikwelu, E. E., & Ogbuagu, F. U. (2014). Geotechnical Investigation of Soil around Mbaukwu Gully Erosion Sites, South-Eastern Part of Nigeria. JAGG, 2(4), 6–17.
   Google Scholar
• Crozier, M. J. (1984). Field assessment of slope instability. In D. Brunsden & D. Prior (Eds.), slope instability. New York: Wiley. p. 620
   Google Scholar
• Egboka, B. C. E., & Nwankwor, G. I. (1985). Hydrogeological and geotechnical parameters as agents for gully-type erosion in the rain-forest belt of Nigeria. Journal of African Earth Sciences, 3(4). 417–425.
   Web of Science ®Google Scholar
• Egboka, B. C. E., Nwankwor, G. I., & Orajaka, I. P. (1990). Implications of paleo-and neotectonics in gully Erosion prone area of south eastern Nigeria. Natural Hazards Journal, 3, 219–231.
   Google Scholar
• Egbueri, J. C., Igwe, O., & Nnamani, C. H. (2017). Assessment of the engineering properties and suitability of some tropical soils as backfill materials. International Journal of Trends in Scientific Research and Development, 2(1), 590–605.
   Google Scholar
• Elkhedr, H. I., Mohamed, R. S., Ahmed, A. E., & Laust, B. P. N. (2004). Geoelectric study on Quaternary groundwater aquifers in Northwest Sinai, Egypt. Egyptian Geophysical Society Journal, 2, 111–125.
   Google Scholar
• Emeh, C., & Igwe, O. (2018). Effect of environmental pollution on susceptibility of sesquioxide-rich soils to water erosion. Geology, Ecology, and Landscapes, 2, 115–126.
   Google Scholar
• Emeh, C. O., & Igwe, O. (2017). Variations in soils derived from an erodible sandstone formation and factors controlling their susceptibility to erosion and landslide. Journal of the Geological Society of India, 90(3), 362–370.
   Web of Science ®Google Scholar
• Eze, H. I. (2007). Effect of rain fall intensity and energy on gully development in North eastern Enugu state, Nigeria. Nigerian Journal of Technology, 26(1), 91–96.
   Google Scholar
• Highland, L. M., & Bobrowsky, P. (2008). The landslide handbook: a guide to understanding landslides. US Geological Survey, Circular 1325 (pp.129). Reston: US Geological Survey
   Google Scholar
• Ifeka, A. C., & Akinbobola, A. (2015). Land use/land cover change detection in some selected stations in Anambra State. JGRP, 8(1), 1–11.
   Google Scholar
• Igbokwe, J. I., Akinyede, J. O. B., Dang, B. T., Alaga, T. M. N., Ono, M. N., Nnodu, V. C., & Anike, L. O. (2008). Mapping and monitoring of the impact of gully erosion in southeastern Nigeria with satellite remote sensing and geographic information system. The International Archives of the Photogrammetry. Remote Sensing and Spatial Information Sciences, 37, 865–871.
   Google Scholar
• Igwe, C. A. (2012). Gully erosion in southeastern Nigeria: Role of soil properties and environmental factors. InTech. Research on Soil Erosion, G. Danilo, Ed. doi: 10.5772/51020
   Google Scholar
• Igwe, O. (2015). Predisposing factors and the mechanisms of rainfall-induced slope movements in Ugwueme, South-East Nigeria. Bulletin of Engineering Geology and the Environment. doi:10.1007/s10064-015-0767-0
   Web of Science ®Google Scholar
• Igwe, O. (2017). The hydrogeological attributes and mechanisms of a receding sedimentary terrain in the Anambra Basin, Southern Nigeria. Environmental Earth Sciences, 76(1), 1–22.
   Google Scholar
• Igwe, O., & Egbueri, J. C. (2018). The characteristics and the erodibility potentials of soils from different geologic formations in Anambra State, Southeastern Nigeria. Journal of the Geological Society of India, 92(4), 471–478.
   Web of Science ®Google Scholar
• Igwe, O., Mode, W., Nnebedum, O., Okonkwo, I., & Oha, I. (2013). The analysis of rainfall-induced slope failures at Iva Valley area of Enugu State, Nigeria. Environmental Earth Sciences. doi:10.1007/s12665-013-2647-x
   Web of Science ®Google Scholar
• Kalinski, M. E. (2011). Soil Mechanics Lab Manual (2nd ed., pp. 193). USA: Wiley.
   Google Scholar
• Laker, M. C. (2004). Advances in soil erosion, soil conservation, land suitability evaluation and land use planning research in South Africa, 1978–2003. South African Journal of Plant and Soil, 21(5), 345–368.
   Google Scholar
• Loke, M. H. (1999). Electrical Imaging Surveys for Environmental and Engineering Studies: A practical guide to 2D and 3D surveys. Penang, Malaysia.
   Google Scholar
• Mahmood, K., Kim, J. M., Ashraf, M., & Ziaurrehman, Z. (2016). The effect of soil type on matric suction and stability of unsaturated slope under uniform rainfall. KSCE Journal of Civil Engineering, 20(4), 1294–1299.
   Web of Science ®Google Scholar
• Moges, A., & Holden, N. M. (2008). Estimating the rate and consequences of gully development: A case study of Umbulo catchment in southern Ethiopia. Land Degradation and Development, 19, 574–586.
   Web of Science ®Google Scholar
• Nwajide, C. S. (1992). Gullying in the Idemilli river catchment, Anambra site, Nigeria: Theory and cure. In S. J. Freeth, C. O. Ofoegbu, & K. M. Onuoha (Eds.), Natural hazards in West and Central Africa (pp. 149–162). Wiesbaden: Vieweg.
   Google Scholar
• Nwajide, C. S. (2013). Geology of Nigeria’s Sedimentary Basins. Lagos Nigeria: CSS Bookshops Limited.
   Google Scholar
• Nwajide, S. C. (1979). A lithostratigraphic analysis of the Nanka sands of southeastern Nigeria. Journal of Mining and Geology, 16(2), 103–109.
   Google Scholar
• Obi, G. C., Okogbue, C. O., & Nwajide, C. S. (2001). Evolution of the Enugu Cuesta: A tectonically driven erosional process. Global Journal of Pure and Applied Sciences, 7, 321–330.
   Google Scholar
• Obiadi, I. I., Nwosu, C. M., Ajaegwu, N. E., Anakwuba, E. K., Onuigbo, N. E., Akpunonu, E. O., & Ezim, O. E. (2014). Gully Erosion in Anambra State, South East Nigeria: Issues and solution. IJES, 2(2), 796–804.
   Google Scholar
• Ofomata, G. E. K. (1965). Factors of soil erosion in the Enugu area of Nigeria. Nigerian Geographical Journal, 8, 45–59.
   Google Scholar
• Ofomata, G. E. K. (1988). The management of soil erosion problems in southeastern Nigeria. Proc. Int. Symp. on erosion in S.E. Nigeria. pp.3–12.
   Google Scholar
• Ogbukagu, I. N. (1979). Soil erosion in the northern parts of the Awka-Orlu uplands. Nigerian Journal of Mining and Geology, 13, 1–6.
   Google Scholar
• Okoyeh, E. I., Akpan, A. E., Egboka, B. C. E., & Okeke, H. I. (2014). An assessment of the influences of surface and subsurface water level dynamics in the development of Gullies in Anambra State, Southeastern Nigeria. Earth Interactions, 18, 1–24.
   Web of Science ®Google Scholar
• Ownegh, M., & Nohtani, M. (2004). Relationship between Geomorphologic Units and Erosion and Sediment Yield in Kashidar Watershed, Golestan Province, Iran. Conference Paper, 13th International Soil Conservation Organisation Conference – Brisbane, July 2004; Conserving Soil and Water for Society: Sharing Solutions, 5p.
   Google Scholar
• Poesen, J. (2011). Challenges in gully erosion research. Landform Analysis, 17, 5–9.
   Google Scholar
• Rockwell, D. L. (2002). The influence of groundwater on surface flow erosion processes during a rainstorm. Earth Surface Processes and Landforms, 27(5), 495–514.
   Web of Science ®Google Scholar
• Roy, K. K., & Elliot, H. M. (1981). Some observations regarding depth of exploration in DC electrical methods. Geoexploration, 19, 1–13.
   Google Scholar
• Scheidegger, A. E. (1973). Hydrogeomorphology. Journal of Hydrology, 20(3), 193–215.
   Google Scholar
• Shellberg, J. P., Brooks, A. P., Sencer, J. R., & Ward, D. P. (2013). The hydrogeomorphic influences on alluvial gully erosion along the Mitchell River fluvial megafan. Hydrological Processes, 27(7), 1086–1104.
   Web of Science ®Google Scholar
• Singh, K. P. (2005). Nonlinear estimation of aquifer parameters from surfacial resistivity measurements. Hydrology and Earth System Sciences Discussion, 2, 917–938.
   Google Scholar
• Sophocleous, M. (2002). Interactions between groundwater and surface water: The state of the science. Hydrogeology Journal, 10, 52–67.
   Web of Science ®Google Scholar
• Tebebu, T. Y., Abiy, A. Z., Zegeye, A. D., Dahlke, H. E., Easton, Z. M., Tilahun, S. A., … & Steenhuis, T. S. (2010). Surface and subsurface flow effect on permanent gully formation and upland erosion near Lake Tana in the northern highlands of Ethiopia. Hydrology and Earth System Sciences Discussion, 7, 5235–5265.
   Google Scholar
• Telford, W. H., Gilbert, L. P., & Sheriff, R. E. (1977). Applied geophysics. London: Cambridge University Press.
   Google Scholar