Machine learning-based identification for the main influencing factors of alluvial fan development in the Lhasa River Basin, Qinghai-Tibet Plateau
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Alluvial fan
Alluvial plain
The study consists of the identification of landforms subject to alluvial fan flooding in active sectors of the Zonda range piedmont. In the Department of Pocito, located about 5 km southwest of San Juan City, a series of alluvial fans have been identified. These alluvial fans are located downstream of the natural drainage basins covering an area of approximately 130 km^2 towards the eastern slopes of the Zonda range at a median elevation of 2,000 m a.s.l.
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Alluvial plain
Landform
Alluvial soils
Elevation (ballistics)
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Abstract Geoarchaeological investigations of the alluvial piedmont or bajada emanating from the Tortolita Mountains, Arizona, show that the distribution of Hohokam sites apparent from the surface is complete and undisturbed by geological processes. Late Holocene geomorphic processes and their resultant deposits on the bajada affected the location of prehistoric Hohokam agricultural settlements. Hohokam settlements were commonly situated on small alluvial fans dominated by sheetwash processes and deposition of fine‐grained alluvium, where floodwater farming could be easily pursued with little modification of the natural surface. Large alluvial fans, dominated by channel processes and coarse‐grained alluvium were avoided by the Hohokam farmer because these areas were less suitable for floodwater farming.
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Human settlement
Alluvial plain
Settlement (finance)
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This chapter contains sections titled: Introduction: dryland alluvial fans – an overview Process and form on dryland alluvial fans Factors controlling alluvial fan dynamics Alluvial fan dynamics Discussion: significance of dry-region alluvial fans Acknowledgements References
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Alluvial plain
Alluvial soils
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