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dc.contributor.advisorWiencke, Lawrence
dc.contributor.authorMerenda, Kevin-Druis
dc.date.accessioned2020-10-19T10:07:52Z
dc.date.accessioned2022-02-03T13:19:16Z
dc.date.available2021-10-15T10:07:52Z
dc.date.available2022-02-03T13:19:16Z
dc.date.issued2020
dc.identifierMerenda_mines_0052E_12045.pdf
dc.identifierT 9012
dc.identifier.urihttps://hdl.handle.net/11124/175348
dc.descriptionIncludes bibliographical references.
dc.description2020 Summer.
dc.description.abstractEmissions of Light and Very-low frequency perturbations due to Electromagnetic pulse Sources (elves) are observed by the Pierre Auger Cosmic-Ray Observatory (Auger), located in Malargüe, Argentina, with an unprecedented acquisition rate of 10 MHz. An elve is a ring-shaped transient luminous event that expands across the base of the ionosphere at 90 km altitude, above thunderstorms. The elve-observation footprint of the Auger Fluorescence Detector (FD) is 3×10^6 km2, extending over this region known for the highest lightning-flash rate in the tallest thunderstorms on Earth. Northern Argentina has also be identified as one of the only landmasses struck by lightning superbolts, which radiate more than 1 MJ in the form of an electromagnetic pulse. In this dissertation, I first provide background on thunderstorm electrification, lightning processes, and transient luminous events. Second, I present phenomenological properties that I reconstruct directly from the elve data of the Auger FD. I report the first observation of an elve with a complex light spectrum and an elve with a record radial extent of 1000 km. I also reconstruct the lowest altitude intra-cloud lightning stroke ever reported from the observation of elves, 7 km. Third, I detail the end-to-end simulation and perform sensitivity studies of the simulation of the photon surface density of elves to various lightning properties. I employ the elve simulation to estimate the sensitivity of the Auger FD to the altitude of lightning strokes. Fourth, I compare the simulation directly to two well-characterized elves acquired by the Auger FD to assess the validity of the end-to-end simulation. The detailed comparison of well-calibrated data and elaborate simulation will guide future improvements in the current models used to describe elves. From the simulation, I parametrize a relationship between lightning peak current and elve maximum brightness to reconstruct the lightning current of the Auger elve-inducing lightning strokes. Finally, I summarize the major results of this work and how they benefit the field of atmospheric electricity physics.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartof2020 - Mines Theses & Dissertations
dc.rightsCopyright of the original work is retained by the author.
dc.subjectelves
dc.subjectionosphere
dc.subjectthunderstorm
dc.subjectfluorescence
dc.subjectArgentina
dc.subjectlightning
dc.titleStudies of elves and their connection to lightning with the Pierre Auger Observatory
dc.typeText
dc.contributor.committeememberSarazin, Frederic
dc.contributor.committeememberCarr, Lincoln D.
dc.contributor.committeememberMarshall, Robert
dc.contributor.committeememberAbbud-Madrid, Angel
dcterms.embargo.terms2021-10-15
dcterms.embargo.expires2021-10-15
thesis.degree.nameDoctor of Philosophy (Ph.D.)
thesis.degree.levelDoctoral
thesis.degree.disciplinePhysics
thesis.degree.grantorColorado School of Mines
dc.rights.accessEmbargo Expires: 10/15/2021


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