during summer and autumn. The morphology of the bend was very stable over the observation period and neither bank erosion nor pool scouring occurred. However, fine sediments accumulate within vegetation patches and in the recirculation zones while
the remaining open areas tend to erode slightly. With the decay of macrophytes in winter, sediment accumulations are mobilised again and the bathymetry levels, supporting cyclic models of morphologic change in vegetated bends. In the second part of the paper
This study documents the effect that a series of discontinuous gullies, located in the semi-arid Karoo (South Africa), had on local valley morphology and landscape evolution. The longitudinal and cross-sectional morphology of 2 discontinuous gully
End moraine of the Ragnarbreen consists of 3 subzones: (1) outer moraine ridge, (2) culmination moraine ridge and (3) inner moraine plateau. Reworking processes were and still are the main factor influencing the morphology and sediment distribution
complex of the Ragnarbreen revealed patterns in the morphology such as the lineation of hillocks and depressions, parallel to the edge of the moraine complex.
laser scanning (TLS) data. Regions of differing morphological characteristics and vegetation cover were delineated. Three-dimensional (3D) models of volume change were established and mass change was derived from these models. DEMs were modified region
and by considering sediment budget plausibility. Comprehensive evaluation showed that DEM usability depends on a relation between the technique used to obtain elevation data, surface morphology and vegetation cover characteristics.
The bed morphology of upland single-thread channels in semi-arid environments : evidence of repeating bedforms and their wider implications for gravel-bed rivers
, such that nowadays reference conditions. In addition, recent natural climatic variations (e.g. the Little Ice Age) are superimposed on human disturbances, thus defying the definition of any equilibrium morphological conditions even under human-free states. A summary
of works on historical channel adjustments in rivers of the Italian Alps is presented in order to document the impacts deriving from human pressure at different basin scales and for different river morphologies, from steep confined streams to large
The implications of coupling relate to downstream channel response, fan morphology, sedimentation patterns and vertical sedimentary sequences. Temporal and spatial scales of coupling are related, and with increasing scales the dominant controls
geometries with morphologies measured during previous flume experiments. The topography of the bifurcations consists of either plane or bedform-dominated beds which may or may not possess discordance between the 2 bifurcation distributaries. The results
distribution. This may contribute to observed morphological differences between sand-bedded and gravel-bedded braided river networks.
This study focuses on lithological contrasts of headmost channel morphology of 2 mountainous areas underlain by chert or sandstone. The areas have contrasting runoff processes : subsurface storm flow predominates in the chert area, whereas
processes affect channel-step morphology, indicating that lithology plays a key role in the formation of channel steps and in variations between headwater streams.
A hierarchy of classifications of river channels based on their morphological properties is presented in the study at three scales : the shape and character of the valley, the channel pattern and bedforms. Single-thread channels are subdivided
into morphological types by sinuosity and lateral instability. In spite of numerous efforts the definite distinction between composite channel pattern types (anabranching and anstomosing) has not been achieved yet. Human intervention (river regulation) induces river
The aim of this work is to quantify whether and how the presence of a complex three-dimensional (3D) morphology due to alternate bars in a straight channel may generate an additional contribution to total drag resistance and sediment transport
in a cross-section due to 3D effects of alternate bars. The AA. term the resulting relations morphologically averaged sediment transport and resistance equations.
impact on slope morphology. Interdependences between quarrying and construction caused unstable rock slopes and 4 rock-mass falls have occurred at 2 quarries near Spitz (1961, 1984, 2002) and Dürnstein (2009). Rock mechanical analysis at these quarries
has shown that the combination of existing geological discontinuities and artificially modified morphology is fatal in terms of slope stability. Remedial measures for both locations are essential to maintain transport infrastructure. Sufficiently
Built up area ; Core-periphery ; Housing ; Housing ressources ; Land use ; Poland ; Twentieth Century ; Urban area ; Urban change ; Urban morphology ; Warsaw
This study of a small lake basin located near the southwestern coast of Sardinia has allowed individualisation of this morphology as this lake is linked to the volcanic outcrops of the Oligo-Miocene that constitute the basement of this territory
in administrative and settlement-related terms, functionally and morphologically. The classification presented is universal in its characteristics, creating opportunities, not only for further and fuller differentiation within the set, but also for linking up
The aim of the paper is to analyze the morphology and development of the aeolian forms in Inner Somogy (W-Hungary). In the southern part of the region a 245.5 km2 large area was studied, where 475 dunes, belonging to different dune generations, were