Results 61 to 70 of about 3,101 (167)
Assimilation of Velocity Data for Tidal Hydrodynamics Model Calibration
Abstract Assessing tidal stream energy resource typically involves the application of numerical models calibrated against sparse Acoustic Doppler Current Profiler (ADCP) data. This introduces significant challenges in energetic sites which are prone to significant spatiotemporal variations, like the Pentland Firth, Scotland, which is home to the world ...
Connor Jordan, Athanasios Angeloudis
wiley +1 more source
Abstract Quantifying interactions between distinct water bodies is critical yet challenging for understanding ocean and estuarine dynamics. We introduce the coincidence index (CI), defined as the product of two arbitrary tracers (a $a$, b $b$), to diagnose where two water masses coexist and mix.
Xiangyu Li +2 more
wiley +1 more source
Análise hidrodinâmica do estuário do rio Lima, Portugal, a partir de simulação numérica
A complexidade que envolve a gestão sustentável das zonas costeiras, associada a sua relevância econômica e sócioambiental, tem como pré-requesito o conhecimento do padrão hidrodinâmico dos estuários, que é influenciado diretamente pelas vazões típicas e
Nelson Carvalho Dantas de Brito Costa +3 more
doaj +1 more source
RNSTM: A Network‐Link Approach to Streamflow Temperature Modeling
ABSTRACT This work presents the development and validation of the River Network Streamflow Temperature Model (RNSTM), which solves the energy balance equations at the air‐water interface within the channels to estimate their temperature. RNSTM considers solar radiation, net longwave radiation, evaporative heat flux, and convective heat transfer ...
Valeria García‐Múnera +4 more
wiley +1 more source
NUMERICAL SIMULATION OF UJONG SEUDEUN LAND SEPARATION CAUSED BY THE 2004 INDIAN OCEAN TSUNAMI, ACEH-INDONESIA [PDF]
The Aceh province in Indonesia, located around the Sumatra subduction area, was one of the worst hit areas with respect to damage from the impact of the 2004 Indian Ocean tsunami. A 9.15 Mw earthquake triggered the tsunami.
Musa Al'ala +3 more
doaj
Potential Impacts of Low Flows on Fish Foodscapes and Production in a Braided River
ABSTRACT Changes in river discharge affect the physical composition and connectivity of habitats which, in turn, may shape the spatial distribution of fish food abundance, accessibility and quality—the ‘foodscape’—of river ecosystems. However, the influence of river flows on fish foodscapes has received very little attention from scientists. We studied
Rick J. Stoffels +11 more
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Maturation of River‐Dominated Delta Tops: The Channelized Delta Model
Abstract We present a novel, laterally averaged model of delta growth, the channelized delta model, in which delta top dynamics are described in terms of channelized (lumped channel) and non‐channelized areas. The maturation level of the lumped channel is defined by a shape factor that dictates flow partitioning between channelized and non‐channelized ...
M. J. Czapiga, E. Viparelli, G. Parker
wiley +1 more source
A 2D Tide-Averaged Model for the Long-Term Evolution of an Idealized Tidal Basin-Inlet-Delta System
We present a model for the morphodynamics of tidal basin-inlet-delta systems at the centennial time scales. Tidal flow is calculated through a friction dominated model, with a semi-empirical correction to account for the advection of momentum.
Giulio Mariotti, Shamim Musrhid
doaj +1 more source
Abstract The protective services provided by coastal foredunes vary spatially due to alongshore differences in dune morphology and hydrodynamic forcing. This study aims to quantify the drivers of alongshore variability of dune evolution across spatial (40‐km) and temporal (multi‐decadal) scales. The alongshore variability in dune evolution is extracted
Selwyn S. Heminway +6 more
wiley +1 more source
Free Bars in Straight Channels: Pattern Formation far Beyond Criticality
Abstract Bar formation plays a central role in river morphodynamics and has been extensively studied by means of analytical theories, flume experiments and numerical simulations. In this study, we investigate strongly nonlinear mode competition and free bar dynamics using a spectral numerical model. Starting from near‐flat random bed initial conditions,
F. Weber +4 more
wiley +1 more source

