摘要
Tephrafalloutisanimportanttypeofhazardcausedbyexplosivevolcaniceruption,andnumericalsimulationhasbecomeafastandeffectiveapproachtoassessthedispersionanddepositionoftephrafallout.Accordingtotheimproved2DdiffusionmodelofSuzuki(1983),weeditedatephradiffusionprogramthatcanrunintheWindowssystem.Basedonpreviousdata,wesimulatedthediffusionscopeoftheJinlongdingzivolcaniceruption,whichisthelatesteruptionintheLonggangvolcaniccluster.Thesimulatedresultsareingoodagreementwiththeresultsfrommeasurementinsitu,indicatingthatthemodelisreliableandtheparametersusedinthemodelaresuitable.Byusingwindprofilesoftenyears,7,021simulationsunderdifferentwindprofileswerecarriedout,andthenprobabilistichazardmapsoftephrafalloutwereconstructedfortephrathicknessthresholds,1cmand0.5cm.Thisstudycanprovideanimportantscientificbasisforvolcanichazardanalysis,riskmitigationplansandcountermeasuresintheLonggangvolcanicarea.
出版日期
2013年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
