Att studera askmoln med GNSS

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dc.contributor.authorNguyen, Björnborg
dc.contributor.authorSjöberg, Mattias
dc.contributor.departmentChalmers tekniska högskola / Institutionen för rymd- och geovetenskapsv
dc.contributor.departmentChalmers University of Technology / Department of Earth and Space Sciencesen
dc.date.accessioned2019-07-03T13:24:07Z
dc.date.available2019-07-03T13:24:07Z
dc.date.issued2014
dc.description.abstractAbstract In this report the technique of observing volcanic ash in the atmosphere by analyzing SNR data (Signal-to-Noise Ratio) from GNSS (Global Navigation Satellite System) stations was investigated. The functionality of the method was confirmed by studying volcanic plumes from three areas: Iceland, Sicily and Indonesia. A number of programs were written for data analysis. The timing and direction of the observed detections for Eyjafjallaj¨okull (2010) and Etna (2006) proved to fit with data from other detection techniques. During early 2014 several volcanoes (i.a. Sinabung, Kelut and Merapi) in Indonesia were erupting relatively simultaneously. A large number of volcanic plumes could therefore be detected there. By combining data from several satellites and receivers information about the location of the volcanic ash plumes could be obtained. The advantages of this technique include its relatively low costs and its potential for continuous and comprehensive observation opportunities. In the future there are good opportunities for SNR data analysis from GNSS stations to function as a complement to current detection techniques.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/199500
dc.language.isoeng
dc.setspec.uppsokLifeEarthScience
dc.subjectEnergi
dc.subjectGeovetenskap och miljövetenskap
dc.subjectKlimatforskning
dc.subjectEnergy
dc.subjectEarth and Related Environmental Sciences
dc.subjectClimate Research
dc.titleAtt studera askmoln med GNSS
dc.type.degreeExamensarbete för kandidatexamensv
dc.type.degreeBachelor Thesisen
dc.type.uppsokM2
local.programmeEngineering Physics (300 hp)
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