Scholarly record
GEOMORPHOLOGICAL AND SEDIMENTOLOGICAL CHARACTERISTICS OF DEBRIS FLOWS IN THE RIVER BUYUKDERE WATERSHED (EASTERN RHODOPES, BULGARIA)
Abstract
Debris flows are considered as flows of highly liquefied sediments in mountain areas, usually triggered by intensive rainfall or snowmelt. They move rapidly through the transport channel or a gully and accumulate the debris material on a less slopping or flat areas, forming a debris fan. Often debris flows occur suddenly and could affect infrastructure as well as to influence human activity and life. This determines the growing need to deepen the research of the debris flows and to take into account the peculiarities of their occurrence in the strategies and plans for territorial development. In the current paper main morphometric parameters of debris flows area in the watershed of the river Byuyukdere (Southern Bulgaria) and characteristics of debris flow deposits are presented. Geomorphogical settings derived from the morphometric analyses and field research are considered as prerequisites for debris flows occurrence and propagation. Morphoscopic and grain-size analyzes are used to characterize the sediments and the conditions of their transport and accumulation. The calculated values of sorting coefficient of the deposits, in a range of 2.08 to 4.68, indicate the turbulent depositional environment and the flow dynamics.
Publication Impact Profile
Publication details
References14
Dobrev N.,Georgieva M., The debris flow in the northern part of Kresna Gorge: Characterization of the source zone and material properties, Review of the Bulgarian Geological Society, vol. 71, part 1-3, Bulgaria, 2010, pp 113-121 (in Bulgarian)
Kenderova, R., Rachev, G, Baltakova, A., Debris flows in the Middle Struma Valley. Ann. of the University of Sofia „St. Kliment Ohridski”, Faculty of geology and geography, vol. 106 book 2, Geography, 2014, p. 13-40. (in Bulgarian)
Krenchev, D., Kenderova, R., Matev, S., Nikolova, N., Rachev, G., Gera, M., Debris flows in Kresna gorge (Bulgaria) – geomorphological characteristics and weather conditions. Journal of the Geographical Institute “Jovan Cvijić” SASA, 71(1), 2021, pp. 15–27. DOI: 10.2298/IJGI2101015K
Dotseva, Z., Gerdjikov, I., Vangelov, D., Modern debris flow activity in southern slopes of Rila Mountain, with an example from the area of Cherna Mesta village. Review of the Bulgarian Geological Society, vol. 80, book 3, 2019, p. 227–229. National Conference with international participation “GEOSCIENCES 2019”
Dotseva, Z., Gerdjikov, I., Assessment of debris flows prone watersheds in the southern slopes of Stara planina mountain by combined raster and morphometric analysis. Journal of Mining and Geological Sciences, University of Mining and Geology “St. Ivan Rilski”, Vol. 63, 2020, ISSN 2682-9525 (print), ISSN 2683-0027 (online), pp. 302 – 307
Benda, L., The influence of debris flows on channels and valley floors in the Oregon Coast Range, U.S.A., Earth surface processes and landforms, vol. 15, pp 457-466, 1990.
Nishiguchi, Y., Uchida, T., Takezawa, N., Ishizuka, T., Mizuyama, T., Runout Characteristics and Grain Size Distribution of Large-scale Debris Flows Triggered by Deep Catastrophic Landslides, International Journal of Erosion Control Engineering, Vol. 5, Issue 1, 2012, pp 16-26, DOI: 10.13101/ijece.5.16
Plescot, K., Sedimentological characteristics of debris flow deposits within ice−cored moraine of Ebbabreen, central Spitsbergen, Polish Polar Research, Poland, vol. 36, no. 2, pp. 125–144, 2015, DOI: 10.1515/popore−2015−0006
Zang, W., Wang, Q., Chen, J., Li, H., Que, J., Kong, Y., Grain-Size Analysis of Debris Flow Alluvial Fans in Panxi Area along Jinsha River, China, Sustainability, 7, 2015, pp 15219-15242, DOI: 10.3390/su71115219
Wang, Y., Cui, P., Wang, Z., Liang, S., Threshold criterion for debris flow initiation in seasonal gullies, International Journal of Sediment Research, Vol. 32, Issue 2, 2017, pp 231-239, ISSN 1001-6279, DOI: 10.1016/j.ijsrc.2017.03.003.
Melton, M. A., Geometric properties of mature drainage basins and their representation in an E4 phase space. The Journal of Geology, 66, no. 1, 1958, pp. 35-54.
Folk, R., Ward, W., Brazos River Bar: a study in the significance of grain size parameters, Journal of Sedimentary Petrology, vol. 27, 1, 1957, pp 3-26.
Serebryaniy, L. R., 1980. Laboratory analysis in geomorphology, M., 1980, 160 p., (in Russian)
Gerdjikov, I., Vangelov, D., Glabadanidu, I., One underestimated geological hazard: the debris flows, Review of the Bulgarian Geological Society, vol.73, part 1-3, 2012, pp 85-104 (in Bulgarian)
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
