Results 61 to 70 of about 1,738,277 (218)

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

Archaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather, Matthias Leopold, Kaitlin Sullivan, Kane Ditchfield, Tom Horrocks, Luke Gliganic, Emma Beckett, Diana Patalwala, Emielda Yusiharni, Michael Smirk, William Hiscock, Jo McDonald   +11 more
wiley   +1 more source

Dynamics of turbulent flow over mobile dune

Flow
The present study reveals the turbulence dynamics and morphological adjustments of mobile dune-shaped bedforms in an alluvial stream. Results demonstrate acceleration of flow over the dune crest enhancing streamwise velocity, while the initial and the ...
Pradyumna Kumar Behera, Vishal Deshpande, Bimlesh Kumar   +2 more
doaj   +1 more source

Automatic Detection and Segmentation of Barchan Dunes on Mars and Earth Using a Convolutional Neural Network

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The morphology of isolated barchan dunes on Mars and Earth may shed light on the dynamic conditions that form them, their migration direction and the physical properties of the sediments composing them.
Lior Rubanenko, Sebastian Perez-Lopez, Joseph Schull, Mathieu G. A. Lapotre   +3 more
doaj   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

DUNE MIGRATION AND SAND TRANSPORT RATES IN TIDAL ESTUARIES: THE EXAMPLE OF THE RIVER ELBE [PDF]

, 2010
Large parts of the tidal estuary of river Elbe (Germany) are characterized by regular patterns of sand dunes. They are presumed to evolve due to complex sand transport mechanisms and show multi-faceted migration patterns. Direction and magnitude of their
Thomas Strotmann, Nino Ohle, Andreas Wurpts, Strotmann, Thomas, Wurpts, Andreas, Ohle, Nino, Zorndt, Anna, Anna Christina Zorndt, Torsten Schlurmann, Schlurmann, Torsten, Zorndt, Anna Christina   +10 more
core   +1 more source

Story2Board: A Training‐Free Approach for Expressive Visual Storytelling

Computer Graphics Forum, EarlyView.
Abstract We present Story2Board, a training‐free framework for expressive storyboard generation from natural language. Existing methods narrowly focus on subject identity, overlooking key aspects of visual storytelling such as spatial composition, background evolution, and narrative pacing.
D. Dinkevich, M. Levy, O. Avrahami, D. Samuel, D. Lischinski   +4 more
wiley   +1 more source

90 Day Fiancé: Presentations of Status Exchange on the International Marriage Market

Family Relations, EarlyView.
ABSTRACT Objective This study examines power and status, as constructed by producers on the reality television show 90 Day Fiancé, that comes from being a US citizen on the international marriage market. We investigate what show producers present each partner as offering the other and what this suggests about gender and power in cross‐national ...
Andrea Laurent‐Simpson, Beth Montemurro, Jessica Wray   +2 more
wiley   +1 more source

Numerical simulation of wind field and sand flux in crescentic sand dunes

Scientific Reports, 2021
Sand flux is the key factor to determine the migration of sand dunes and the erosion to the surrounding environment. There are crescent-shaped sand dunes of various scales in the desert, and there are significant differences in spatial wind field and ...
Huiwen Zhang, Zhen Wu, Jing Hu, Zhiping Zhang, Bin Xiao, Jianping Ma   +5 more
doaj   +1 more source

Managed Aquifer Recharge Operations and Design under Hydrologic Uncertainty

Groundwater, EarlyView.
Integrated hydrologic modeling uses dual ensembles of MAR operations and IES‐derived parameters to evaluate mounding, inundation, and transport risks under climate extremes. Exceedance‐probability metrics quantify environmental risks across the MAR impact zone, showing drain‐controlled mound limits, recovery effects, and pathways to interdunal and ...
Wolfgang Schmid, Adrian Dela Cruz, Adam Siade, Michael Donn, Olga Barron   +4 more
wiley   +1 more source

Measuring Sand Dune Migration Rates with COSI-Corr and Landsat: Opportunities and Challenges

Remote Sensing, 2019
It has been over a decade since COSI-Corr, the Co-Registration of Optically Sensed Images and Correlation, was first used to produce a raster map of sand dune movement, however, no studies have yet applied it to the full Landsat archive.
Thomas Baird, Charlie S. Bristow, Pieter Vermeesch   +2 more
doaj   +1 more source