Results 61 to 70 of about 2,627,186 (246)

Large‐Scale Evaluation of Beach Morphodynamic Evolution and Environmental Drivers Along China's Eastern Coast Through Long‐Term Landsat Analysis

Earth's Future
Beach evolution severely impacts the economy and social well‐being of coastal communities, posing a threat to the safety of coastal infrastructure. Under the influence of rising sea levels and other various environmental variables, the coastal morphology
Hai Sun, Zihua Zhao, Xuejing Ruan, Yanan Chu, Chao Fan   +4 more
doaj   +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

Efficient Data Assimilation Method for Optimizing Prediction of Flow Field and Sediment Transport in Open Channel

River Research and Applications, EarlyView.
ABSTRACT Accurately predicting open‐channel flow under complex conditions remains a challenge. This study introduces a novel synergetic self‐adaptive data assimilation (DA) framework, using a proportional‐integral‐derivative (PID) controller to dynamically calibrate the bed roughness parameter ks in a shallow‐water equation model (via the momentum ...
M. Almetwally Ahmed, S. Samuel Li
wiley   +1 more source

Depth-Resolved Modelling of Intra-Swash Morphodynamics Induced by Solitary Waves

Journal of Marine Science and Engineering, 2022
We present a fully coupled 2DV morphodynamic model, implemented in OpenFOAM® that is capable of simulating swash-zone morphodynamics of sandy beaches.
Joost W. M. Kranenborg, Geert H. P. Campmans, Niels G. Jacobsen, Jebbe J. van der Werf, Ad J. H. M. Reniers, Suzanne J. M. H. Hulscher   +5 more
doaj   +1 more source

Mapping River Bed Topography in Whitewater Rapids Using Bathymetric LiDAR

River Research and Applications, EarlyView.
ABSTRACT Bathymetric LiDAR captures river topography efficiently for clear and shallow water, but for mountain rivers, whitewater rapids still pose challenges. This study proposes a novel method to enable the extraction of bottom returns specifically in turbulent whitewater sections.
Jan Rhomberg‐Kauert, Theresa Himmelsbach, Florian Pöppl, Lucas Dammert, Martin Pfennigbauer, Gottfried Mandlburger   +5 more
wiley   +1 more source

A Positive Feedback Between Sediment Deposition and Tidal Prism May Affect the Morphodynamic Evolution of Tidal Deltas

Journal of Geophysical Research: Earth Surface, 2018
Tidal deltas are fragile systems whose morphology can be easily impacted by variations in water and sediment fluxes caused by natural and human processes.
Xiaohe Zhang, S. Fagherazzi, N. Leonardi, Jiufa Li   +3 more
semanticscholar   +1 more source

Evaluation of Cua Lo Estuary’s Morpho-Dynamic Evolution and Its Impact on Port Planning

Journal of Marine Science and Engineering, 2023
Coastal erosion and accretion along the Quang Nam coast in Vietnam have been increasing in recent years, causing negative impacts on the inhabitants and local ecology.
Dinh Nhat Quang, Nguyen Quang Duc Anh, Ho Sy Tam, Nguyen Xuan Tinh, Hitoshi Tanaka, Nguyen Trung Viet   +5 more
doaj   +1 more source

Surrogate-based optimization of tidal turbine arrays: a case study for the Faro-Olhão inlet [PDF]

, 2019
This paper presents a study for estimating the size of a tidal turbine array for the Faro-Olhão Inlet (Potugal) using a surrogate optimization approach. The method compromises problem formulation, hydro-morphodynamic modelling, surrogate construction and
A Forrester, A Pacheco, E Acar, E González-Gorbeña, E González-Gorbeña, E González-Gorbeña, EGG Eisenmann, J Sacks, JL Loeppky, K-T Fang, MD Buhmann, NV Queipo, OAL Brutto, R Shakoor, RJ Feu Du, S Koziel, S Koziel, SW Funke   +17 more
core   +1 more source

Unravelling the evolution of the Frébouge polygenetic cone in Val Ferret (Mont Blanc Massif)

Boreas, EarlyView.
Proglacial settings in the Alps are typically polygenetic, often characterized by a complex and discontinuous interplay between glacial, fluvial and gravitational processes. These processes yield high volumes of sediments, which usually exceed their transportation capacity.
Catharina Dieleman, Philip Deline, Susan Ivy Ochs, Patricia Hug, Jordan Aaron, Marcus  Christl, Naki Akçar   +6 more
wiley   +1 more source

One-dimensional morphodynamic model coupling open-channel flow and turbidity current in reservoir

Journal of Hydrology and Hydromechanics, 2017
Traditional depth-averaged morphodynamic models for turbidity currents usually focus on the propagation of currents after plunging. However, owing to the unsteady characteristic of the plunge point locations and the tough conditions of field measurement ...
Wang Zenghui, Xia Junqiang, Deng Shanshan, Zhang Junhua, Li Tao   +4 more
doaj   +1 more source