Dust storms, volcanic ash hurricanes, and turbidity currents: physical similarities and differences with emphasis on flow temperature
- 242 Downloads
We analyze similarities and differences between three natural phenomena of common occurrence on Earth, which are studied in environmental geosciences: dust storms, volcanic ash hurricanes, and turbidity currents. The discussion combines field and experimental observations and physical concepts with the aim of proposing general guidelines for multiphase flow modeling in geosciences. All of these phenomena are fascinating, but their potentially dangerous interaction with the environment and human infrastructures makes them worthy of particular attention. The main similarity between the three phenomena is the transportation of fine particles, i.e., dust, over distances of several tens to thousands of kilometers, whereas the main difference is the origin and distribution of the particle load in the environment. Finally, we propose a thermal model for the volcanic case, which is applicable to any particulate currents sedimenting and depositing dust on Earth.
KeywordsDust storms Subaqueous flows Volcanic ash Flow temperature Modeling Experiments Rock physics Mediterranean
We thank two reviewers, guest editor Arnau Folch and the editorial staff for making suggestions on the topic of dust and for assisting this manuscript.
- Al-Awadhi JM, Al-Dousari AM, Khalaf FI (2014) Influence of land degradation on the local rate of dust fallout in Kuwait. Atmos Clim Sci 4:437–446Google Scholar
- Báez W, Arnosio M, Chiodi A, Ortiz-Yañes A, Viramonte G, Bustos E, Giordano G, López JF (2015) Estratigrafía y evolución del Complejo Volcánico Cerro Blanco, Puna Austral, Argentina. Rev Mex Cienc Geol 32:1–21Google Scholar
- Breard ECP, Lube G, Cronin SJ, Valentine GA (2015) Transport and deposition processes of the hydrothermal blast of the 6 August 2012 Te Maari eruption, Mt. Tongariro. Bull Volcanol 77:100–118Google Scholar
- Charbonnier SJ, Doronzo DM, Esposti Ongaro T (2013) A benchmarking exercise to promote inter-comparison for numerical models of pyroclastic density currents. IAVCEI 2013 Scientific Assembly, July 20-24, Kagoshima, JapanGoogle Scholar
- Doronzo DM, Khalaf EA, Dellino P, de Tullio MD, Dioguardi F, Gurioli L, Mele D, Pascazio G, Sulpizio R (2015) Local impact of dust storms around a suburban building in arid and semi-arid regions: numerical simulation examples from Dubai and Riyadh, Arabian Peninsula. Arab J Geosci 8:7359–7369CrossRefGoogle Scholar