Isolated landscapes largely shaped by aeolian processes can occur on Earth, while the majority of Mars' recent history has been dominated by wind-driven activity. Resultantly, Martian landscapes often exhibit large-scale aeolian features, including yardang landforms carved from sedimentary-layered deposits. High-resolution orbital monitoring has revealed that persistent bedform activity is occu...

Detailed sedimentological analysis of a prodeltaic turbidite unit within the Pennsylvanian Minturn Formation provides insight into the nature of fan-delta deposition, and allows reconstruction of paleogeographic and paleoclimatic conditions within a tectonically active cratonic basin. The formation, a thick succession of fan-delta deposits, exhibits a complex stratigraphic architecture of alluv...

On inner continental shelves, a variety of coarse grained bedforms, such as gravel dunes, are shaped by hydrodynamic and morphodynamic processes. The formation evolution bedforms reflect balance between seabed coastal morphology, sediment type availability, regional hydrodynamics. Yet, observing bedform directly in the marine environment is rare, mostly due to lack repeat seafloor mapping surve...

Cyclic steps are widespread on submarine slopes of many modern insular volcanoes. This paper provides the first detailed description and interpretation sedimentary structures depositional architecture cyclic-step deposits such bedforms formed slope an ancient volcano. The partially cyclic preserved in a 67 m thick coset 1 to 12 cobble-based units middle Miocene volcaniclastics, exposed along cl...

River regulation alters hydrological and sediment regimes consequently affects habitat complexity dynamics, biodiversity ecosystem services. Although channel bank erosion is a key geomorphological process supplying alluvial channels with coarse sediments diversifying aquatic riparian habitats, banks have often been stabilized to limit risk human activities facilities. The objective of this pape...

Barchan dunes, or simply barchans, are crescent-shaped dunes found in diverse environments such as the bottom of rivers, Earth's deserts and surface Mars. In a recent paper [Phys. Rev. E 101, 012905 (2020)], we investigated evolution subaqueous barchans by using computational fluid dynamics - discrete element method (CFD-DEM), our simulations captured well an initial pile toward barchan dune bo...

Aeolian features at Oxia Planum ? the 2023 landing site for ExoMars Rosalind Franklin Rover (ERFR) are important Mars exploration because they record information about past and current wind regimes, sand transport vectors, lend insight to abrasion, deposition, of granular material. To characterize regime erosional history we used a combination manual observational machine?learning techniques an...

In Scandia Cavi on Mars, barchans migrating over a field of transverse aeolian ridges (TARs) leave behind distinctive trails (“wakes”) comprising both TARs undergoing exhumation and coarse-grained ripples being shed from the barchans. With distance upwind barchans, combined pattern these bedforms coarsens defect density decreases, thus appearing to mature with exposure time. We present results ...

The research reported here combines high-resolution digital elevation models (DEMs) derived from airborne LiDAR with ground-penetrating radar (GPR) surveys and macro- micro-scale sedimentological analyses to study the geomorphology internal structure composition of ridges mounds within an area hummocky topography in Brosna basin, central Ireland. Our evidence indicates that much consists fragme...

Accurately determining sediment loads is necessary for managing river environments but difficult because multiple processes can lead to large discharge-independent changes in transport. Thus, estimations of load using discharge–sediment rating curves fit sparse or historical sediment-transport measurements be inaccurate, necessitating alternative approaches reduce uncertainty. Continuous uncert...