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Journal of Desert Research ›› 2026, Vol. 46 ›› Issue (3): 75-87.DOI: 10.7522/j.issn.1000-694X.2025.00180

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Coexistence patterns and wind regimes of dome dunes with barchanlinearreticulate

Xinyao Wang(), Ping Lv(), Junlin Yu, Yifei Wu, Yichen Wei   

  1. School of Geography and Tourism,Shaanxi Normal University,Xi'an 710119,China
  • Received:2025-09-08 Revised:2025-11-11 Online:2026-05-20 Published:2026-06-11
  • Contact: Ping Lv

Abstract:

Dome dunes are widely distributed on Earth and often coexist with other dune types. Previous research has primarily focused on the morphology of dome dunes and their developmental environments, but systematic studies on their morphology and developmental wind regimes across national scale coexisting zones are lacking. The research subjects of this study are dome dunes from 9 coexisting zones with barchan dunes, 13 coexisting zones with linear dunes, and 2 coexisting zones with reticulate dunes within China's major deserts as research objects. Using Google Earth satellite imagery and ERA5 reanalysis data, we conducted a comparative study of their morphology and developmental wind regimes. The results showed that: In terms of dune scale, dome dunes in the dome-linear zones(simple) are the smallest, while those in the dome-linear zones(complex) are the largest. Regarding wind regimes, the annual average wind speeds in the various coexisting zones are similar, and the monthly average wind speed trends are consistent. Sand-driving winds occur most frequently in spring and summer, with a sharp decrease in frequency during autumn and winter. Most areas experience a single sand-driving wind direction throughout the year, while some dome-barchan zones exhibit seasonal changes in wind direction. The dome-reticulate zones and some dome-linear zones are influenced by bidirectional wind directions all year round. In terms of drift potential, the dome-barchan zones exhibit low wind energy and a wide range of directional variability, corresponding to bimodal or wide unimodal wind regimes. The dome-linear zones exhibit low wind energy and medium variability, primarily corresponding to bimodal wind regimes. The dome-reticulate zones exhibit low wind energy and medium variability, corresponding to obtuse bimodal wind regimes. These findings indicate that differences in local wind regimes are the primary factor driving the morphological variations of dome dunes across different regions.

Key words: dome dune, morphology, wind regime, coexistence

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