Results 51 to 60 of about 32,835 (209)

Understanding snow bedform formation by adding sintering to a cellular automata model [PDF]

The Cryosphere, 2019
Cellular-automata-based modelling for simulating snow bedforms and snow deposition is introduced in this study. The well-known ReSCAL model, previously used for sand bedforms, is adapted for this purpose by implementing a simple sintering mechanism.
V. Sharma, V. Sharma, L. Braud, M. Lehning, M. Lehning   +4 more
doaj   +1 more source

Experimental dataset on "Detection and tracking of barchan dunes using Artificial Intelligence"

, 2023
This is part of the data concerning experiments on the interaction of barchan dunes. Here, you find a dataset of experimental images.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE.
Cunez, E (via Mendeley Data), Cunez, Esteban   +1 more
core   +1 more source

Contribution of Reverse Dune Migration to Stabilization of a Transgressive Coastal Dune Field at Lagoa do Peixe National Park Dune Field (South of Brazil)

Remote Sensing, 2023
Coastal dunes that transgress typically move landward, while their reverse movement is not well understood. The article discusses the study of barchan and barchanoid dunes in the Lagoa do Peixe National Park in the coastal plain of Rio Grande do Sul ...
Rogério Portantiolo Manzolli, Luana Carla Portz, Angela Fontán-Bouzas, Volney Junior Borges Bitencourt, Javier Alcántara-Carrió   +4 more
doaj   +1 more source

Ground Penetrating Radar Observations of Subsurface Structures From the Makgadikgadi Pans (Botswana): A Terrestrial Analogue of Martian Playa Lakes

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Playa lakes are considered promising landing sites on Mars because of their strong astrobiological potential. Therefore, sediments and buried structures in terrestrial playa lakes have become the focus of numerous analogue studies. The inclusion of ground penetrating radar (GPR) in the payloads of Martian missions has opened new avenues for ...
M. Shawel, L. Capozzoli, T. H. Kahsay, B. Kgosidintsi, G. Romano, A. T. Selepeng, F. Franchi   +6 more
wiley   +1 more source

Hazard impact and genetic development of sand dunes west of Samalut, Egypt

Egyptian Journal of Remote Sensing and Space Sciences, 2010
A southeast mobile sand dune field extends west of the Nile Valley and encroaches on the cultivated land. These dunes have been investigated by geological and geomorphological mapping using Landsat ETM images and field work.
El Sayed Ahmed El Gammal, Alaa El Din Ahmed El Gammal   +1 more
doaj   +1 more source

Spatial and temporal evolution of a coastal erg margin: The Middle Jurassic Page Sandstone, southern Utah, USA

Sedimentology, Volume 73, Issue 6, Page 2081-2119, October 2026.
ABSTRACT Aeolian deflationary events are erosive to static stages where sediment supply is insufficient to support bedform migration and preservation in the rock record. In the vicinity of shallow‐marine environments, inland rises of relative water table and associated generation of deflationary super surfaces may be driven by the onset of ...
Victor J. P. Hême de Lacotte, Chester H. C. Davies, Briony J. Bowler, Stuart M. Clarke, Thomas J. H. Dodd   +4 more
wiley   +1 more source

Process‐Based Modeling of Coastal Dune Blowout Initiation, Development, and Stabilization

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 9, September 2026.
Abstract Coastal dune blowouts are key geomorphic features that drive landward sediment transport, dune mobility, and habitat diversity, yet their conditions of formation and evolution remain poorly quantified. Using the process‐based AeoLiS model under time‐invariant wind conditions and for idealized coastal dune settings, we simulate the spontaneous ...
Bruno Castelle, Sierd de Vries, Olivier Burvingt, Alexandre Nicolae Lerma, Patrick Hesp   +4 more
wiley   +1 more source

Migration of Barchan Dunes in Qatar–Controls of the Shamal, Teleconnections, Sea-Level Changes and Human Impact

Geosciences, 2018
Barchan dune fields are a dominant landscape feature in SE Qatar and a key element of the peninsula’s geodiversity. The migration of barchan dunes is mainly controlled by dune size, wind patterns, vegetation cover and human impact.
Max Engel, Fabian Boesl, Helmut Brückner   +2 more
doaj   +1 more source

Sand Dune Dynamics Exploiting a Fully Automatic Method Using Satellite SAR Data

Remote Sensing, 2020
This work presents an automatic procedure to quantify dune dynamics on isolated barchan dunes exploiting Synthetic Aperture RADAR satellite data. We use C-band datasets, allowing the multi-temporal analysis of dune dynamics in two study areas, one ...
José Manuel Delgado Blasco, Marco Chini, Gert Verstraeten, Ramon F. Hanssen   +3 more
doaj   +1 more source

Surface‐State Controls on Dust Emission Variability in Lower Mesopotamia and Kuwait Using Field and Multi‐High‐Resolution Satellite Data

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 9, September 2026.
Abstract Aeolian dust strongly influences climate, air quality, and biogeochemical cycles, yet identifying source areas and determining their surface‐state controls remain challenging. We focus on lower Mesopotamia and Kuwait, a globally significant dust source region where surface characteristics of dust sources remain poorly understood through ...
Jasem A. Albanai, Giles F. S. Wiggs, Ali Al‐Hemoud, David S. G. Thomas   +3 more
wiley   +1 more source