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dc.contributor.advisorSager, William W.
dc.creatorReed, Walter 1993-
dc.date.accessioned2018-11-30T15:29:39Z
dc.date.available2018-11-30T15:29:39Z
dc.date.created2018-05
dc.date.issuedMay 2018
dc.date.submittedMay 2018
dc.identifier.urihttp://hdl.handle.net/10657/3432
dc.description.abstractTamu Massif is currently the world’s largest known volcano covering ~315,000 km2 in area. It is located off the coast of Japan in the Pacific Ocean and represents the oldest and largest edifice of the Shatsky Rise oceanic plateau. New multibeam echosounder (MBES) data were combined with legacy MBES, single beam echosounder (SBES), and satellite altimetry (SA) data to compile a bathymetric map of Tamu Massif. Approximately 130 million depth soundings and estimates were combined into a variable resolution grid through stacking of data sets. New observations from these data include the discovery of a Y-shaped ridge that is interpreted as a relict triple junction that formed as the result of a ridge jump. Evidence of spreading ridges and chains of secondary cones parallel to magnetic lineations help explain Tamu Massif’s elongate shape in a NE-SW orientation. Escarpments are identified and correlated with known faults and occur primarily in two orientations. Escarpments trend perpendicular to flank slopes at ~5000 m and are observed on all sides of Tamu Massif except the north. These escarpments are interpreted as the result of differential subsidence. Other escarpments have orientations parallel to magnetic lineations formed at spreading ridges and are likely a result of ridge faulting. Mass wasting is observed in the form of erosional channels, a submarine slide, sediment slumping, and sediment creep. These features are interpreted as the result of gravitational loading and sediment instability. Moats around secondary cones, ripples on the summit sediment cap, and channel features are probably the result of bottom currents.
dc.format.mimetypeapplication/pdf
dc.language.isoen
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.subjectTamu Massif
dc.subjectShatsky Rise
dc.subjectGeomorphology
dc.subjectBathymetry
dc.subjectVariable Resolution Bathymetry
dc.subjectTriple Junction
dc.titleVariable Resolution Bathymetry and Geomorphology of Tamu Massif
dc.date.updated2018-11-30T15:29:39Z
dc.type.genreThesis
thesis.degree.nameMaster of Science
thesis.degree.levelMasters
thesis.degree.disciplineGeophysics
thesis.degree.grantorUniversity of Houston
thesis.degree.departmentEarth and Atmospheric Sciences, Department of
dc.contributor.committeeMemberWellner, Julia S.
dc.contributor.committeeMemberBrumley, Kelley
local.embargo.terms2020-05-01
local.embargo.lift2020-05-01
dcterms.accessRightsThe full text of this item is not available at this time because the student has placed this item under an embargo for a period of time. The Libraries are not authorized to provide a copy of this work during the embargo period.
dc.type.dcmiText
dc.format.digitalOriginborn digital
dc.description.departmentEarth and Atmospheric Sciences, Department of
thesis.degree.collegeCollege of Natural Sciences and Mathematics


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