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dc.contributor.authorColeman, Peter F.
dc.date.accessioned2011-03-20T23:31:12Z
dc.date.available2011-03-20T23:31:12Z
dc.date.issued1995
dc.identifier.urihttps://hdl.handle.net/10182/3351
dc.description.abstractA review of theoretical, experimental and field work on debris flow surges was undertaken. A new hypothesis concerning the nature of debris flow surges was proposed and tested in the laboratory. The hypothesis is that a debris flow surge can be analytically explained by what was termed a "moving shearing granular dam (MSGD)" model. It proposes that any surge can, in principle, be analyzed macroscopically without knowing the internal details of individual grain motions using a physical description involving three essential forces on the surge head/body. These forces are; an upslope internal frictional force, a downslope gravity force and a downslope hydrostatic force. The quantitative testing was carried out in a 9m long by 150 mm wide flume with transparent walls flume. Quasi-steady state coal grain (diameters up to about 4mm) and wall paper paste surges were produced which propagated down the flume. During these runs an unsaturated region, termed the “wetting front,” was observed within the surge front. Field evidence for the wetting front was established from measurements made on debris flow deposits at Bullock Creek, North Canterbury. The results of the analyses of several runs were found to be consistent with the observed quasi-steady surge front translational motion. Several observations from the literature review of debris flow surge field behaviour are consistent with the central concept underlying the MSGD hypothesis while no observations were found which appear to conflict with the idea.en
dc.language.isoenen
dc.publisherLincoln Universityen
dc.rights.urihttps://researcharchive.lincoln.ac.nz/page/rights
dc.subjectdebris flowen
dc.subjectsurgeen
dc.subjectmoving shearing granular dam (MSGD)en
dc.subjectsediment transporten
dc.subjectrheologyen
dc.titleAn experimental investigation of the debris flow surge phenomenonen
dc.typeThesisen
thesis.degree.grantorLincoln Universityen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Applied Scienceen
lu.thesis.supervisorDavies, Tim
lu.thesis.supervisorPainter, David
lu.contributor.unitDepartment of Environmental Managementen
dc.rights.accessRightsDigital thesis can be viewed by current staff and students of Lincoln University only. Print copy available for reading in Lincoln University Library. May be available through inter-library loan.en
dc.subject.anzsrc040607 Surface Processesen


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