The influence of surface crust dynamics and sediment availability on aeolian dust emission from ephemeral lake beds: evidence from Etosha Pan, Namibia - Natasha S. Wallum; Giles F.S. Wiggs; Rosemary A. Huck; Jenifer A. Leidelmeijer; Harland L. Goldstein (Aeolian Research, 2026)