Earth Surface Processes and Landforms

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Erosion, transport and deposition of a sediment replenishment under flood conditions
Earth Surface Processes and Landforms - Tập 45 Số 13 - Trang 3354-3367 - 2020
Severin Stähly, Mário J. Franca, Christopher T. Robinson, Anton Schleiss
AbstractRiver reaches downstream of dams with constant residual discharge often lack sediment supply and periodic high flows due to dam sediment retention and flow regulation, respectively. To test a novel multi‐deposit methodology for defining environmental flows for activating the dynamics of the river morphology downstream of dams, a flood was released from Rossens Dam in Switzerland. This even... hiện toàn bộ
Spatio‐temporal patterns of channel changes in response to a major flood event: the case of the Magra River (central–northern Italy)
Earth Surface Processes and Landforms - Tập 40 Số 3 - Trang 326-339 - 2015
Laura Nardi, Massimo Rinaldi
AbstractOn October 25th 2011, the Magra River (central–northern Italy) was affected by a significant flood event with an estimated return interval ranging from 30 to 200 years. This study investigates the morphological responses of the Magra River to this major flood event with the aims of (i) documenting the channel changes which occurred in response to the flood; (ii) analysing this response wit... hiện toàn bộ
Flood hydrology and geomorphic effectiveness in the central Appalachians
Earth Surface Processes and Landforms - Tập 15 Số 2 - Trang 119-134 - 1990
Andrew J. Miller
AbstractThis paper compares hydrologic records and geomorphic effects of several historic floods in the central Appalachian region of the eastern United States. The most recent of these, occurring in November 1985, was the largest ever recorded in West Virginia, with peak discharges exceeding the estimated 500‐year discharge at eight of eleven stations in the South Branch Potomac River and Cheat R... hiện toàn bộ
Development of ST:REAM: a reach‐based stream power balance approach for predicting alluvial river channel adjustment
Earth Surface Processes and Landforms - Tập 40 Số 3 - Trang 403-413 - 2015
Chris Parker, Colin R. Thorne, Nicholas J. Clifford
AbstractRiver channel sediment dynamics are important in integrated catchment management because changes in channel morphology resulting from sediment transfer have important implications for many river functions. However, application of existing approaches that account for catchment‐scale sediment dynamics has been limited, largely due to the difficulty in obtaining data necessary to support them... hiện toàn bộ
Longitudinal distributions of river flood power: the combined automated flood, elevation and stream power (CAFES) methodology
Earth Surface Processes and Landforms - Tập 34 Số 2 - Trang 280-290 - 2009
Douglas M. Barker, Damian Lawler, Donald W. Knight, D. Morris, Helen Davies, Elizabeth Stewart
AbstractStream power can be an extremely useful index of fluvial sediment transport, channel pattern, river channel erosion and riparian habitat development. However, most previous studies of downstream changes in stream power have relied on field measurements at selected cross‐sections, which are time consuming, and typically based on limited data, which cannot fully represent important spatial v... hiện toàn bộ
Impact of reach geometry on stream channel sensitivity to extreme floods
Earth Surface Processes and Landforms - Tập 39 Số 13 - Trang 1778-1789 - 2014
Eirik M. Buraas, Carl E. Renshaw, Francis J. Magilligan, W. Brian Dade
ABSTRACTPredicting spatial and temporal variations in bank erosion due to extreme floods presents a long‐standing challenge in geomorphology. We develop two methodologies for rapid, regional‐scale assessments of stream reaches susceptible to channel widening. The first proposes that channel widening occurs when unit stream power exceeds a critical threshold (300 W/m2). The second is motivated by t... hiện toàn bộ
River channel and bar patterns explained and predicted by an empirical and a physics‐based method
Earth Surface Processes and Landforms - Tập 36 Số 6 - Trang 721-738 - 2011
Maarten G. Kleinhans, Jan H. van den Berg
AbstractOur objective is to understand general causes of different river channel patterns. In this paper we compare an empirical stream power‐based classification and a physics‐based bar pattern predictor. We present a careful selection of data from the literature that contains rivers with discharge and median bed particle size ranging over several orders of magnitude with various channel patterns... hiện toàn bộ
Wind erosion on the north‐eastern Tibetan Plateau: constraints from OSL and U‐Th dating of playa salt crust in the Qaidam Basin
Earth Surface Processes and Landforms - Tập 39 Số 6 - Trang 779-789 - 2014
Wenxia Han, Zhibang Ma, Zhongping Lai, Erwin Appel, Xiaomin Fang, Lupeng Yu
ABSTRACTThe arid Qaidam Basin is the largest (~3.88 × 104 km2) basin on the north‐eastern Tibetan Plateau. Wind erosion in the area has been regarded as an important trigger for intra‐basin tectonic balance upheaval, geomorphologic development and as a major supplier of dust to the Chinese Loess Plateau downwind. An initial estimate of the rate of wind erosion (Kapp et al., 2011) based on geologic... hiện toàn bộ
Influence of rock mass strength on the erosion rate of alpine cliffs
Earth Surface Processes and Landforms - Tập 34 Số 10 - Trang 1339-1352 - 2009
Jeffrey R. Moore, J. W. Sanders, W. E. Dietrich, Steven D. Glaser
AbstractCollapse of cliff faces by rockfall is a primary mode of bedrock erosion in alpine environments and exerts a first‐order control on the morphologic development of these landscapes. In this work we investigate the influence of rock mass strength on the retreat rate of alpine cliffs. To quantify rockwall competence we employed the Slope Mass Rating (SMR) geomechanical strength index, a metri... hiện toàn bộ
Multi‐method (14C, 36Cl, 234U/230Th) age bracketing of the Tschirgant rock avalanche (Eastern Alps): implications for absolute dating of catastrophic mass‐wasting
Earth Surface Processes and Landforms - Tập 42 Số 7 - Trang 1110-1118 - 2017
Marc Ostermann, Susan Ivy‐Ochs, Diethard Sanders, Christoph Prager
AbstractCorrect and precise age determination of prehistorical catastrophic rock‐slope failures prerequisites any hypotheses relating this type of mass wasting to past climatic regimes or palaeo‐seismic records. Despite good exposure, easy accessibility and a long tradition of absolute dating, the age of the 230 million m3 carbonate‐lithic Tschirgant rock avalanche event of the Eastern Alps (Austr... hiện toàn bộ
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