Results 71 to 80 of about 12,498 (209)

Sediment transport inferred by submarine bedforms [PDF]

, 2001
By means of bathymetric and side scan sonar records, the net circulation of sediments caused by tidal currents and waves in the outer Principal Channel of Bahía Blanca Estuary is inferred. On the northern coast of the studied area there are two harbours,
Cuadrado, Diana Graciela, Ginsberg, Silvia Susana, Gomez, Eduardo Alberto   +2 more
core   +1 more source

Detecting Morphological Change From DInSAR Data in Ephemeral, Braided, Gravel Bed Rivers. Application to the Ungauged Trionto River, Italy

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Estimating morphological change in braided gravel bed rivers is important to determine the geometry of the active part of the braidplain, that is the width of the area where bed material is transported and the number of active branches during a certain time interval.
Valeria Guadagno, Giuseppe Del Giudice, Cristiana Di Cristo, Diego Di Martire, Angelo Leopardi, Matthew J. Czapiga, Enrica Viparelli   +6 more
wiley   +1 more source

A Novel In Situ Experimental Setup for Studying the Impact of Bedform Celerity on 2D Oxygen Distribution in the Hyporheic Zone of Streams

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Hydrodynamic and morphodynamic forces interacting across the sediment‐water interface control the biogeochemistry in the hyporheic zone. When investigating the redox zonation within streambeds, dissolved oxygen (O2) is considered a key solute to the understanding of river ecosystems.
Alejandra Villa, Hanna Schulz, Hauke Dämpfling, Stephanie Spahr, Shai Arnon, Jörg Lewandowski   +5 more
wiley   +1 more source

Side scan sonar image and geologic interpretation of the Ría de Pontevedra seafloor (Galicia, NW Spain)

Scientia Marina, 2000
High-resolution side scan sonar has been used for mapping the seafloor of the Ría de Pontevedra. Four backscatter patterns have been mapped within the Ría: (1) Pattern with isolated reflections, correlated with granite and metamorphic outcrops and ...
Soledad García-Gil, Ruth Durán, Federico Vilas   +2 more
doaj   +1 more source

Stochastics of bedform dimensions [PDF]

, 2005
Often river dunes are considered as regular bed patterns, with a mean dune height and a mean dune length. In reality however, river dunes are threedimensional and irregular features that cannot be fully described by their mean values.
Blom, A., Hulscher, S.J.M.H., Leclair, S.F., Mark, C.F. van der, Mohrig, D.   +4 more
core   +1 more source

MODEX: Laboratory experiment exploring sediment spreading of a mound under waves and currents [PDF]

, 2019
The dispersal of sand from submerged mounds in the nearshore is driven by the interplay of processes such as converging and recirculating flows, changing roughness, bed slope effects and wave focusing/refraction.
Castelle, Bruno, de Schipper, Matthieu, Hopkins, Julia, Kleinhans Maarten, G., McLelland, Stuart J., Murphy, Brendan, Ribas Prats, Francesca, Ruessink, Gerben, Saxoni, Ioanna, Senechal, Nadia, Wengrove, Meagan E.   +10 more
core   +1 more source

Near‐Bed Flow Turbulence Beneath Ice Cover Under Varying Hydrological Conditions: A 9‐Year Field Measurement‐Based Analysis From a Meander Bend

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Climate change alters hydrological and ice conditions, but how these changes affect turbulence beneath ice cover has been poorly studied. This study presents a multi‐year observational analysis of near‐bed turbulence under ice cover in a subarctic meandering river reach.
Karoliina Lintunen, Essi Vilhonen, Tuure Takala, Linnea Blåfield, Elina Kasvi, Eliisa Lotsari, Petteri Alho   +6 more
wiley   +1 more source

Entrainment, motion and deposition of coarse particles transported by water over a sloping mobile bed

, 2016
In gravel-bed rivers, bedload transport exhibits considerable variability in time and space. Recently, stochastic bedload transport theories have been developed to address the mechanisms and effects of bedload transport fluctuations.
Ancey, C., Bohorquez, P., Heyman, J.
core   +3 more sources

Slumping and Sediment Storage at the Shelf‐Edge: A Case Study From the Kookfontein and Waterford Formations, Tanqua Karoo Depocenter, South Africa

Basin Research, Volume 38, Issue 2, March/April 2026.
Block model of Tanqua shelf‐edge delta formation at Katjiesberg, illustrating key stratigraphic features and system relationships interpreted from the Kookfontein‐Waterford formations. Schematic lines A‐E correspond to locations of measured sections. ABSTRACT A low‐gradient shelf‐edge delta system preserved at the Katjiesberg outcrop in the northern ...
Ellen Reat Wersan, Cari Johnson, Emma A. Morris, H. DeVille Wickens   +3 more
wiley   +1 more source

Incorporating Non-Equlibrium Ripple Dynamics into Bed Stress Estimates Under Combined Wave and Current Forcing

Journal of Marine Science and Engineering
We present direct measurements of seafloor ripple dimensions, near-bed mean flow Reynolds stresses and near-bed turbulent sediment fluxes on a sandy inner shelf subjected to strong wave and tidal current forcing.
Raúl P. Flores, Sabine Rijnsburger, Saulo Meirelles, Alexander R. Horner-Devine, Alejandro J. Souza, Julie D. Pietrzak   +5 more
doaj   +1 more source