Coastal aeolian sediment transport in an active bed surface layer: Tracer study and conceptual model

Abstract

Coastal aeolian sediment transport is influenced by supply-limiting factors caused by sediment sorting by grain size. Sorting processes can lead to coarsening of the bed surface and influence the formation of aeolian ripples. However, the influence sorting processes and bedforms might have on the magnitude of the transport is not fully understood. This study explores sorting processes and their influence on the magnitude and mode of aeolian transport by using sediment tracers. Sand was painted in different colors according to particle size and placed on a supratidal beach in Noordwijk, the Netherlands. Several experiments were conducted with varying wind

Novel sediment sampling method provides new insights into vertical grain size variability due to marine and aeolian beach processes

“…This is suitable for a flat bed of sand‐sized sediment (< 2 mm), but these slices might not fully represent larger structures such as wind‐driven ripples and shells. Specifically, variations in grain size that occur in wind‐driven ripples with coarser grains at the crests and finer grains in the troughs (observed by, e.g., Uphues et al, 2022), would likely not be recorded with the sand scraper sampling methodology. Ripples were not present in the areas sampled in this research.…”

Introduction to the Women in Geomorphology special issue

“…• the influence of sorting and bedforms on the magnitude of coastal eolian transport (Uphues et al, 2022);…”

“…Field (26) Atkins et al, 2023;Bernatek-Jakiel & Nadal-Romero, 2023;Biausque et al, 2022;Brooks et al, 2022;Bywater-Reyes et al, 2022;Chin, 2022;Gervasi et al, 2021;Glover et al, 2022; Goodman et al, in press;Guiney & Lininger, 2022; Gurnell et al, 2022;Harvey et al, 2022;Hinshaw et al, 2022;Hooke, 2022;Konlechner & Hilton, 2022;Kooijman et al, 2022;Lane et al, 2022;Lefebvre et al, 2022;Marchetti et al, 2022;McKeon et al, 2022;Mol & Grenfell, 2022;Mossa & Chen, 2022;Opalka et al, 2022;Patton et al, 2022;Quock et al, 2022;Regalla et al, 2022;Reitman et al, 2022;Sampietro-Vattuone et al, 2021;Schoch-Baumann et al, 2022;Souza Fonseca et al, 2022;Spiske et al, 2022;Thompson et al, 2022;Uphues et al, 2022;Valentine et al, 2022;Van Soest et al, 2022;Wohl, 2022;Zhang et al, 2022 (Continues)…”

“…Glacial geomorphic studies are represented by papers examining topographic controls on ice flow and glacier front recession (Davies et al, 2022); moraine dynamics in the context of climate change (Rowan et al, 2022); and streamlined sub‐glacial bedforms (McKenzie et al, 2022). Eolian processes and landforms are examined in papers on the morphology and chronology of sand stringers along the margin of the last glacial maximum (Shandonay et al, 2022); the influence of sorting and bedforms on the magnitude of coastal eolian transport (Uphues et al, 2022); grainflow morphology on the slipface of barchan dunes (Zhang et al, 2022); and dust deposition in an ice‐free area of West Greenland (Van Soest et al, 2022). Lacustrine environments are represented by an examination of paleolacustrine landforms (Adolph et al, 2022).…”

Modeling Multi‐Fraction Coastal Aeolian Sediment Transport With Horizontal and Vertical Grain‐Size Variability

“…In the case of deposition, the change in bed surface grain size will be dominated by the grain size of the sediment in the air column. The air column is defined as all air above the bed, and no distinction is made between transport by creep, saltation and bedform migration (contrary to approaches by e.g., Sherman et al., 2019; Uphues et al., 2022). The sediment composition in the air column is determined by processes that occur upwind of the bed surface location.…”