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Debris flows and turbidity current d...

Toniolo, Horacio Antonio.

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Debris flows and turbidity current deposition in the deep sea and reservoirs.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Debris flows and turbidity current deposition in the deep sea and reservoirs./
Author:	Toniolo, Horacio Antonio.
Description:	233 p.
Notes:	Advisers: Gary Parker; Vaughan Richard Voller.
Contained By:	Dissertation Abstracts International63-11B.
Subject:	Engineering, Civil. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3072692
ISBN:	0493925465

Debris flows and turbidity current deposition in the deep sea and reservoirs.
Toniolo, Horacio Antonio.

Debris flows and turbidity current deposition in the deep sea and reservoirs. - 233 p.

Advisers: Gary Parker; Vaughan Richard Voller.

Thesis (Ph.D.)--University of Minnesota, 2002.

Three main topics constitute this thesis: (a) debris flows, (b) depositional turbidity currents in intraslope minibasins, and (c) ponded turbidity currents in reservoirs.

ISBN: 0493925465Subjects--Topical Terms:

783781
Engineering, Civil.

Debris flows and turbidity current deposition in the deep sea and reservoirs.
LDR:03370nam 2200361 a 45 001 936169
005 20110510
008 110510s2002 eng d
020 $a 0493925465
035 $a (UnM)AAI3072692
035 $a AAI3072692
040 $a UnM $c UnM
100 1 $a Toniolo, Horacio Antonio. $3 1259863
245 1 0 $a Debris flows and turbidity current deposition in the deep sea and reservoirs.
300 $a 233 p.
500 $a Advisers: Gary Parker; Vaughan Richard Voller.
500 $a Source: Dissertation Abstracts International, Volume: 63-11, Section: B, page: 5391.
502 $a Thesis (Ph.D.)--University of Minnesota, 2002.
520 $a Three main topics constitute this thesis: (a) debris flows, (b) depositional turbidity currents in intraslope minibasins, and (c) ponded turbidity currents in reservoirs.
520 $a <italic>Debris flows</italic>. Experiments in subaqueous and subaerial laboratory settings were performed to evaluate the ability of an unconfined debris flow to remobilize or rework an antecedent deposit. In the subaerial case reworking was immediate and extensive. By the contrast, in the subaqueous case reworking of the deposit of the first run by the second run was suppressed. Part of the reason for this appears to be hydroplaning of the debris flow heads. As the deposit built up, however, considerable reworking was eventually observed in the subaqueous case as well.
520 $a <italic>Depositional turbidity currents in intraslope minibasins</italic>. A theory is developed to describe sediment deposition in minibasins. Two key aspects of the “fill and spill” process are revealed: (a) the formation of an internal hydraulic jump as a turbidity current flows into a confined basin, and (b) the detrainment of water across a settling interface at the top of the ponded turbidity current downstream of the hydraulic jump. It is shown that sufficiently strong detrainment can consume the flow, so that there is no outflow of either water or sediment even with continuous inflow. As the basin fills with sediment, however, overspill is eventually realized. Upon this theory a numerical model is tested and verified against two experiments. A sample calculation provides an example of applying the model at field scale.
520 $a <italic>Ponded turbidity currents in reservoirs</italic>. A moving-boundary formulation of reservoir sedimentation is presented, also capturing the dynamics of turbidity currents. The formulation considers sediment of two sizes, sand and mud, each characterized in terms of a single grain size. The sand deposits fluvially to form a delta topset, and by avalanching form a delta foreset. The remaining muddy water plunges at a point above the foreset forming a bottomset deposit. This formulation is applied at experimental and field scale, and compared against the results of an experiment. The results represent a mechanistic quantification of the sediment trap efficiency of reservoirs.
590 $a School code: 0130.
650 4 $a Engineering, Civil. $3 783781
650 4 $a Engineering, Environmental. $3 783782
650 4 $a Engineering, Marine and Ocean. $3 1019064
650 4 $a Hydrology. $3 545716
650 4 $a Physical Oceanography. $3 1019163
690 $a 0388
690 $a 0415
690 $a 0543
690 $a 0547
690 $a 0775
710 2 0 $a University of Minnesota. $3 676231
773 0 $t Dissertation Abstracts International $g 63-11B.
790 $a 0130
790 1 0 $a Parker, Gary, $e advisor
790 1 0 $a Voller, Vaughan Richard, $e advisor
791 $a Ph.D.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3072692