Measuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods

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dc.contributor.advisorGlennie, Craig L.
dc.contributor.committeeMemberHartzell, Preston J.
dc.contributor.committeeMemberFinnegan, David C.
dc.creatorGadomski, Peter J.
dc.creator.orcid0000-0003-4877-7217
dc.date.accessioned2019-11-13T03:43:43Z
dc.date.available2019-11-13T03:43:43Z
dc.date.createdDecember 2016
dc.date.issued2016-12
dc.date.submittedDecember 2016
dc.date.updated2019-11-13T03:43:44Z
dc.description.abstractUsing airborne and terrestrial LiDAR data from glaciers in Greenland and Antarctica, we compare three change detection methods for accuracy and performance. We focus in particular on one method, Coherent Point Drift (CPD). We find that CPD outperforms Iterative Closest Point (ICP) and Particle Imaging Velocimetry (PIV) when used on a terrestrial LiDAR dataset at the Helheim Glacier in southeast Greenland. At one representative location, CPD calculated an average glacier velocity of 20.11 m d−1 with Root-Mean Squared Error of 2.5 m d−1 when compared to a GNSS-derived measurement of 20.44md−1. All three change detection methods fail to fully capture the motion of the Canada Glacier in Antarctica, but do detect change in the fast-moving and crevassed portion of the glacier. We conclude that these change detection methods, and CPD in particular, are useful tools for measuring glacier velocity when the data have sufficient identifiable features in both epochs.
dc.description.departmentCivil and Environmental Engineering, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/10657/5416
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectLiDAR
dc.subjectGlaciers
dc.subjectChange-detection
dc.subjectCoherent Point Drift
dc.subjectIterative Closest Point
dc.subjectParticle image velocimetry
dc.subjectHelehim Glacier
dc.subjectCanada Glacier
dc.subjectGlacier velocity
dc.titleMeasuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCullen College of Engineering
thesis.degree.departmentCivil and Environmental Engineering
thesis.degree.disciplineGeosensing Systems
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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