Results 1 to 10 of about 118,568 (280)
Barchan dunes cruising dune-size obstacles
Geophysical Research Letters, 2023 AbstractWe investigate the behavior of subaqueous barchans reaching dune‐size obstacles by carrying out experiments where we varied the obstacle shape and size, the flow strength, and the grains' properties. We found that a subaqueous barchan can pass over or bypass a dune‐size obstacle, or even be blocked, with some intermediate situations.
W. R. Assis +2 more
openaire +3 more sources
Finisterra - Revista Portuguesa de Geografia, 2021 A construção de dunas e os movimentos de areia ao longo da costa europeia estão geralmente relacionados com a variabilidade climática e com a flutuação do nível do mar.
Mihaela Tudor +2 more
doaj +1 more source
Quaternary, 2022 Geomorphic evidence from rivers and lakes can help explain past changes in the locations of archaeological sites as well as environmental and climatic changes in their catchment areas.
Martin Williams
doaj +1 more source
Cuadernos de Investigación Geográfica, 2021 Floods are recurring events in Buenos Aires Province, mainly caused by high-intensity precipitation, and in some cases, they persist for long periods. The objective of this study is to analyze how the topography of the central-western portion of Buenos ...
F.I. Contreras +3 more
doaj +1 more source
Ammophila Invasion Ecology and Dune Restoration on the West Coast of North America
Diversity, 2021 The invasive ecosystem engineer Ammophila arenaria, native to Europe, was first introduced to California (USA) in 1896. More than a century later, it has come to dominate coastal foredune vegetation on the west coast of North America to the near ...
Andrea J. Pickart
doaj +1 more source
Presence, Absence, Transience: The Spatiotemporalities of Sand
Geographies, 2022 Sand grains are ubiquitous in the Earth’s system, and are found in different environmental settings globally, but sand itself as a physical object has multiple conflicting meanings with respect to both its agglomeration into landforms such as sand dunes ...
Jasper Knight
doaj +1 more source
The parabolic blowout dune of Kangasjärvi in Saarijärvi, central Finland [PDF]
Bulletin of the Geological Society of Finland, 1990 This study describes the morphology, internal structure, sediment and origin of a parabolic blowout dune located at Kangasjärvi in Central Finland. The U-shaped dune is an isolated feature situated on a sand plain close to an esker ridge.
J. Mäkelä, K. Illmer
doaj +1 more source
Acta Palaeobotanica, 2020 Human-induced fluctuation of lake levels has been a common phenomenon in Europe since Neolithic times. At present, Lake Tresssee is a eutrophic lake covering less than 5 ha in northern Germany, but its sudden shrinking from ~125 ha before 1800 is ...
Christian Stolz +2 more
doaj +1 more source
Whole plant traits of coastal dune vegetation and implications for interactions with dune dynamics
Ecosphere, 2022 Coastal dunes are important protective features against sea level rise and coastal storms. Interactions between dune plant aboveground structures and sediment trapping that allow for dune building and maintenance are well established.
Shannon L. Walker, Julie Zinnert
doaj +1 more source
When dunes move together, structure of deserts emerges [PDF]
, 2012 Crescent shaped barchan dunes are highly mobile dunes that are usually presented as a prototypical model of sand dunes. Although they have been theoretically shown to be unstable when considered separately, it is well known that they form large ...
Grégoire, Guillaume +3 more
core +4 more sources