Results 81 to 90 of about 12,498 (209)
Acoustic measurements of boundary layer flux profiles over a sandy rippled bed under regular waves [PDF]
, 2009 The study of boundary layer sediment transport processes requires contemporaneous measurements of the bedforms, the flow and the sediment movement. Obtaining these three parameters, at the required temporal-spatial resolutions, has been traditionally ...
Chassagne, Francois, X. +4 more
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Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.Abstract Snow dampens sounds, but anecdotal reports concisely describe audible propagating collapse events—firnquakes—in Antarctic and Arctic snowfields. We propose combining granular and continuum mechanics to form a testable theory for conditioning, triggering, and propagation of firnquakes consistent with scarce data.
A. Voigtländer, B. Gee
wiley +1 more source
Lower Bound on Preserved Flood Duration in Fluvial Bedform Stratigraphy
Geophysical Research LettersRiver bedforms and their deposits—fluvial cross strata— respond to floods. However, it is unclear if all floods are equally represented in cross strata.
Robert C. Mahon +5 more
doaj +1 more source
Water on Mars: Do submarine cyclic steps exist on the red planet?
Progress in Earth and Planetary Science, 2018 Submarine cyclic steps have a significant impact on the evolution of the ocean floor on Earth. These upper-flow regime bedforms should be even more common in Martian reduced-gravity environments.
Svetlana Kostic, Isaac B. Smith
doaj +1 more source
Nearshore oblique sand bars [PDF]
, 2003 The coupling between hydrodynamics and the evolving topography in the surf zone has been theoretically examined for oblique wave incidence. It is shown that positive feedback can lead to the initial growth of several types of rhythmic systems of sand ...
Falqués Serra, Albert +2 more
core +1 more source
Timescales of Autogenic Noise in River Bedform Evolution and Stratigraphy
Geophysical Research LettersBedform evolution and preserved cross strata are known to respond to floods. However, it is unclear if autogenic dynamics mask the flood signal in bedform evolution and cross strata.
Vamsi Ganti +3 more
doaj +1 more source
Remote SensingNearshore sandbars are dynamic features that characterize shallow morphobathymetry and vary over a wide range of geometries and temporal lifespans. Nearshore sandbars influence beach geometry by altering the energy of incoming waves; thus, monitoring the
Evangelos Alevizos
doaj +1 more source
FluidsThe presence of vegetation in submerged conditions and bedforms are a reality in coarse-bed streams. However, this reality has not been well investigated in the literature, despite being a major challenge for natural stream restoration.
Kourosh Nosrati +4 more
doaj +1 more source
A flume study to investigate the contribution of main-channel bedforms on levee formation
E3S Web of Conferences, 2018 Natural levees can be observed worldwide in nearly all river systems characterized by frequent flooding in combination with the transport of suspended bed material.
Branß Till +3 more
doaj +1 more source
Evolution of secondary cellular circulation flow above submarine bedforms imaged by remote sensing techniques [PDF]
, 2013 Normalized radar cross section (NRCS) modulation and acoustic Doppler current profiler (ADCP) measurements above submarine sand ribbons and sand waves are presented. The two study areas are located in the Southern Bight of the North Sea at the Birkenfels
Hennings, Ingo, Herbers, Dagmar
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