Results 21 to 30 of about 8,511 (261)

The DUNE-ALUGrid Module

open access: yesCoRR, 2014
In this paper we present the new DUNE-ALUGrid module. This module contains a major overhaul of the sources from the ALUgrid library and the binding to the DUNE software framework. The main changes include user defined load balancing, parallel grid construction, and an redesign of the 2d grid which can now also be used for parallel computations.
Alkämper, Martin   +3 more
openaire   +3 more sources

Velocity distribution of nonuniform flow on the stoss side over dunes

open access: yesShui kexue jinzhan, 2015
In order to further reveal the flow characteristics over dunes and thus improve the calculation accuracy of velocity,the time-mean velocity profile was analyzed both experimentally and theoretically,and the instantaneous velocities were measured over two
MA Dianguang, DONG Weiliang, XU Junfeng
doaj   +1 more source

Sand Seas and Dune Fields of Egypt

open access: yesGeosciences, 2020
The article reviews the state of knowledge about distribution, sizes, dynamics, and ages of all sand seas (N = 6) and dune fields (N = 10) in Egypt (1,001,450 km2). However, chronological data (Optically Stimulated Luminescence, Thermoluminescence), used
Olaf Bubenzer   +2 more
doaj   +1 more source

Stable isotopes of 18O and D in key components of water flows and the permafrost zone of Central Yakutia (Eastern Siberia)

open access: yesЛëд и снег, 2019
On the basis of about 430 analyses, the 18O and D compositions (%o) of atmospheric precipitation, ground ice, surface and inter-permafrost underground waters of cryogenic-aeolian landscapes of Central Yakutia (Eastern Siberia) are discussed ...
A. A. Galanin   +4 more
doaj   +1 more source

Ecosystem Engineers in the World Coasts: Case Studies and Conceptual Linkages

open access: yesDiversity, 2020
Research on physical ecosystem engineering—i.e., the structural modification of environments by organisms—has flourished during the last two decades. At present, the importance of physical ecosystem engineers for the biodiversity and the functioning of ...
Jorge L. Gutiérrez
doaj   +1 more source

Evidence of Coastal Changes in the West Coast of Naxos Island, Cyclades, Greece

open access: yesJournal of Marine Science and Engineering, 2021
Coastal lagoons and dunes are of great ecological importance, not only for providing habitats for rare flora and fauna, but also for protecting coastal areas from rising sea levels and storms, etc.
Niki Evelpidou   +3 more
doaj   +1 more source

Seasonal Variation of Catenary-Bead Dunes in the Yangtze River Estuary: Causes and Implications

open access: yesJournal of Marine Science and Engineering, 2022
Low-angle lee-side slopes of dunes are commonly developed on the world’s riverbeds, and dune migration associated with sediment transport exert a major influence on riverine processes.
Shuwei Zheng   +7 more
doaj   +1 more source

Niche partitioning in tenebrionid species (Coleoptera: Tenebrionidae) inhabiting Mediterranean coastal dunes

open access: yesEuropean Journal of Entomology, 2016
We analyzed the abundance, distribution and niche overlap of species (Pianka's Ojk index) in tenebrionid beetle communities inhabiting different biotopes in Tyrrhenian and Adriatic sand dunes.
Simone FATTORINI   +4 more
doaj   +1 more source

Mechanisms of Dune Growth and Decay in Rivers

open access: yesGeophysical Research Letters, 2021
The mechanisms responsible for dune growth and decay remain a major unknown in river dynamics. Two theories have been supported by experiments and numerical models. A hydrodynamic explanation suggests that growth and decay occur due to phase lags between
Ryan W. Bradley, Jeremy G. Venditti
doaj   +1 more source

Perspectives on conservation grazing: The need for monitoring and communication

open access: yesEcological Solutions and Evidence
Conservation grazing is widely used to manage open ecosystems, but inconsistent definitions and inadequate reporting of grazing patterns hinder effective communication among researchers, practitioners and policymakers, limiting the understanding and ...
Jonathan Millett   +9 more
doaj   +1 more source

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