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Essentials of Geology Mass Wasting
David Sallee. Chapter 8. Mass Wasting. Introduction. ▫ Mass wasting is the downslope movement of material under the ... decreasing shear strength. ▫ Geology and ... Rapid movements involve visible movements of material ... rapid mass wasting. • May occur along steep canyons, cliffs, and road cuts. • Talus builds up at ...
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movement of surficial Earth materials under the pull of gravity are collectively ... 1.3 Processes of mass wasting are highly varied in three important respects: .... shearing. This single-barb arrows represent the friction force exerted by the ... Page 8 ... between two effects: the tendency, discussed above, for failure to occur as ...
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CHAPTER 13 Denudation, weathering and mass wasting - Routledge
General processes of denudation, weathering and mass wasting are ... crushing processes at Earth's surface, shear stress is predominant in geomorphic.
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6 Complex mass-movement terrains in the
rapid, shallow (<5 m) soil mass mOVements on hillslopes and ... sense, creep movement occurs as quasi-viscous flow under ... In local areas where creep- induced shear stress exceeds the ..... may reflect the 8% lower precipitation of the 1974—1975 ..... Swanston, D. N., 1969, Mass wasting in coastal Alaska: U.S. Dept.
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CHAPTER. After learning ... These exogenic processes are dealt with in detail in this chapter. ... is the force that switches on the movement of all surface ... earth occur due to gradients — from higher levels to lower ... shear stresses ( separating forces). It is this ... Weathering, mass wasting/movements, erosion ..... Page 8 ...
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Download Sample pages 2 PDF - Springer
Chapter 2. Theoretical Background. 2.1 Landslide Processes ... Table 2.2 Mass movement classification based on velocity of displacement (Australian.
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Chapter 14. EXOGENIC ... preparing rocks for removal by mass wasting and erosion. ... Landslides are movement of coherent masses of material along shears.
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Page 1 A Review of the Classification of Landslides of the Flow Type
flow-like mass movements have become entrenched ... discharges, debris avalanches which occur on open .... discrete shear surfaces, not by distributed flow (e.g., ... Key terms for mass movement in the “flows” category according to Varnes ... 5x10-8 1.6 m/year ... of low plasticity such as that produced by mass wasting.
[ 2001_Hungr_FlowType.pdf - Read/Download File

Ore Bin / Oregon Geology magazine / journal - Oregon Department
When the stress is equal to or exceeds the resistance, a landslide occurs. ... "As the shearing forces approach the shear strength of a soil mass, certain sec- ... by unloading the base, thus permitting repeated movement of the slide. 221 ... and debris falls are the main mass movements. ..... controls the type of mass wasting.
[ OBv27n11.pdf - Read/Download File

WP 1 - irasmos - SLF
Aug 31, 2007 ... extremely rapid mass movements for a range of environmental boundary conditions. Due date ... Chapter 1. TRIGGERING OF DEBRIS FLOWS. 1.1 Introduction. 8 ..... In a pure flow, shear occurs throughout the moving mass of material and there is no ... mass movement, and part of our everyday vocabulary.
[ WP1_D11_20070831.pdf - Read/Download File

Mass movement slope streaks imaged by the Mars Orbiter Camera
Oct 25, 2001 ... Orbiter Camera (MOC) allows an evaluation of mass wasting and other slope evolution .... self; if apexes represent trigger points of mass movements, the trigger area ... several streaks occur together on the same slope (Figure 6). Oc- currences of ... nation for their brighter appearance (Figure 8). In one case ...
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Page 1 5 Effects of Land Management on Soil Mass Movement
magnitude less soil mass movement from clearcuts than from road ... The acceleration in rates of mass wasting on clearcuts ... increase in landsliding occurs. .... that some 1750 km of bare ground resulted from recent mass movement (Chapter 1). ... and Rapp [1972] reported the following distribution of soil mass movements ...
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A methodology for determining mass movement - PDXScholar
a methodology to provide general-level mass movement susceptibility maps. ... generate computer maps identifying areas susceptible to mass movements. ... Page 8 .... ing that "either natural or man-induced landslides can occur in areas where de- .... In Chapter f of this thesis it was pointed out that one iustification can be.
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Climate change impacts on mass movements -
Mar 14, 2014 ... movement activity as a result of predicted climate change in mountain ... mass wasting processes in mountain environments (IPCC, 2012; ... debris flows at high -elevation sites also occur when sediment shear ..... 8. A major rock slope failure occurred on 27 December 2011 from Pizzo Cengalo (3369 m asl) ...
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6th International Symposium on Submarine Mass Movements and
Sep 23, 2013 ... Mass wasting features on the submarine flanks of Ventotene volcanic ... Submarine mass-movements along the slopes of the active Ionian ...
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Debris Slides and Flows on Anakeesta Ridge within the - Trace
8-1989. Debris Slides and Flows on Anakeesta Ridge within the Great .... was at least in part responsible for triggering the mass-wasting events varies ... Slope retreat is primarily accomplished through sheet wash, mass movement ... Direct shear testing of Anakeesta phyllite yielded an internal friction angle ... CHAPTER.
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The Geologic Framework, Movement History and Mechanics of the
Chapter 3: Landslide Monitoring and Movement History………………………..... 33 . 3.1 Fracture Map .... stratigraphic column. Figure 8. Geologic map of Salmon Falls Creek Canyon… .... Landslides occur in a plethora of forms; and as .... Mass wasting is the downslope movement of soil or rock material under the influence of  ...
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Mass failures and other processes of sediment - US Forest Service
CHAPTER TWO. Mass Failures and ... direct impact by mass movement events strongly influence riparian ... different, direct effects of slope movements on valley floors, channels, .... Page 8 ... cases, other mass wasting features have been conducted. ... flows, based o n whether the mass movement occurs on a hillslope or in.
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Geomorphological Dating of Scarps in Temperate - Universität Bonn
rate of downslope soil movement depends on the local slope and can be described ... 2.5.1 Mass movement processes . ..... presented in Chapter 8. ..... wasting for all gravitational or downslope movements of weathered rock debris and de- ... Summerfield (1996) states that in a pure flow, shear occurs throughout the moving.
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Submarine Mass Movements and their Consequences
research in submarine mass movements and confirmation of the strong directions in ... Part I Submarine Mass Movement in Margin Construction ... 8. Onshore and Offshore Geomorphological Features of the El. Golfo Debris Avalanche (El Hierro , Canary .... 25 Submarine Mass Wasting on Hovgaard Ridge, Fram Strait,.
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