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dc.contributor.advisorJonsson, Sigurjon
dc.contributor.authorBerdahl, J. Scott
dc.date.accessioned2016-05-23T06:31:46Z
dc.date.available2017-05-23T00:00:00Z
dc.date.issued2016-05-16
dc.identifier.citationBerdahl, J. S. (2016). Geological Effects on Lightning Strike Distributions. KAUST Research Repository. https://doi.org/10.25781/KAUST-95DAM
dc.identifier.doi10.25781/KAUST-95DAM
dc.identifier.urihttp://hdl.handle.net/10754/610555
dc.description.abstractRecent advances in lightning detection networks allow for detailed mapping of lightning flash locations. Longstanding rumors of geological influence on cloud-to-ground (CG) lightning distribution and recent commercial claims based on such influence can now be tested empirically. If present, such influence could represent a new, cheap and efficient geophysical tool with applications in mineral, hydrothermal and oil exploration, regional geological mapping, and infrastructure planning. This project applies statistical analysis to lightning data collected by the United States National Lightning Detection Network from 2006 through 2015 in order to assess whether the huge range in electrical conductivities of geological materials plays a role in the spatial distribution of CG lightning. CG flash densities are mapped for twelve areas in the contiguous United States and compared to elevation and geology, as well as to the locations of faults, railroads and tall towers including wind turbines. Overall spatial randomness is assessed, along with spatial correlation of attributes. Negative and positive polarity lightning are considered separately and together. Topography and tower locations show a strong influence on CG distribution patterns. Geology, faults and railroads do not. This suggests that ground conductivity is not an important factor in determining lightning strike location on scales larger than current flash location accuracies, which are generally several hundred meters. Once a lightning channel is established, however, ground properties at the contact point may play a role in determining properties of the subsequent stroke.
dc.language.isoen
dc.subjectLightning
dc.subjectGeology
dc.subjectSpatial statistics
dc.subjectConductivity
dc.titleGeological Effects on Lightning Strike Distributions
dc.typeThesis
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.rights.embargodate2017-05-23
thesis.degree.grantorKing Abdullah University of Science and Technology
dc.contributor.committeememberGenton, Marc G.
dc.contributor.committeememberBagci, Hakan
dc.contributor.committeememberMcCabe, Matthew
thesis.degree.disciplineEarth Science and Engineering
thesis.degree.nameMaster of Science
dc.rights.accessrightsAt the time of archiving, the student author of this thesis opted to temporarily restrict access to it. The full text of this thesis became available to the public after the expiration of the embargo on 2017-05-23.
refterms.dateFOA2017-05-23T00:00:00Z


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