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2 edition of relative potential erosion detection (PED) model for the upper Buff Bay catchment, Portland, Jamaica found in the catalog.

relative potential erosion detection (PED) model for the upper Buff Bay catchment, Portland, Jamaica

Catriona M. I. MacGillivray

relative potential erosion detection (PED) model for the upper Buff Bay catchment, Portland, Jamaica

a geographical information system application

by Catriona M. I. MacGillivray

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  • 9 Currently reading

Published by University of Portsmouth in Portsmouth .
Written in English


Edition Notes

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

StatementCatriona M.I. MacGillivray.
ID Numbers
Open LibraryOL20419815M

High-intensity rainfall ( mm h-1) on the less erodible woodland generated amplified runoff and erosion from tree microsites postfire, but erosion (45–75 g m-2) was minor relative to the 3–fold fire-induced increase in erosion on tree microsites at the highly erodible site (– g m-2). STABILITY SIMULATIONS TO ASSESS BANK EROSION RATES AND POTENTIAL MITIGATION STRATEGIES Prepared by Natasha Bankhead Cardno Entrix, Oxford, MS. Andrew Simon Cardno Entrix, Portland, OR. And Relative contributions of hydraulic (dark blue), geotechnical (beige) to total erosion. Many scales and tools have been developed by expert opinion. Several methods are available by which tools can be field tested in order to more accurately gauge their diagnostic potential. Promising new methods including item banks and computer-adaptive tests are under development to maximize the efficiency of screening tools for depression. Various methods are available to diagnose psychiatric.


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relative potential erosion detection (PED) model for the upper Buff Bay catchment, Portland, Jamaica by Catriona M. I. MacGillivray Download PDF EPUB FB2

And relative susceptibility of humid subtropical hillslopes to sheetwash erosion. The extent of the ero-sion was based on the conservation potential of the existing vegetation cover. This is an original de-ductive and deterministic model (Potential Erosion Detection, PED) incorporating regionally applica.

A relative potential erosion detection (PED) model for the upper Buff Bay catchment, Portland, Jamaica: a geographical information system application Author: MacGillivray, Catriona M. ISNI: Awarding Body: University of Portsmouth. A relative Potential Erosion Detection (PED) model for the upper Buff Bay catchment, parish of Portland, Jamaica: A Geographical Information System application: Published in: Scripta Geologica.

Special Issue, 6(1), 1 - ISSN Author: C.M.I. MacGillivray; S.K. Donovan: Supporting host: Naturalis journals & series: Date issued: Cited by: 2.

The extent of the erosion was based on the conservation potential of the existing vegetation cover. This is an original deductive and deterministic model (Potential Erosion Detection, PED) incorporating regionally applicable physical and land use factors thought to be by: 2.

Keywords: soil erosion, universal soil loss equation, geographic information systems, digital model of terrain. Introduction The aim of this work was to create a map of domain areas that describes potential water erosion. That means we tried to localize the presence of potential erosion.

Runoff and erosion potential are increased in areas with high topographic relief. Flat, low spots will hold water, allowing for sediment to settle and remain on site.

Vegetation and erosion control needs should be selected with topography in mind. Chapter 8 of the Mn/DOT Road Design Manual (RDM). Weathering, Erosion, & Deposition Flipbook: Cut out each piece on the two pages and staple together to form a flipbook.

Use the information provided in the book to answer the questions on the last page. Earth’s land is constantly changing. Wind and water are two things that contribute to.

The relative impact of water and wind relative potential erosion detection book total erosion was investigated by means of an experimental-empirical study.

Wind erosion and water erosion were measured at five different sites: (1) Mediterranean fallow, (2) Mediterranean orchard, (3) wheat field, (4) vineyard and (5) sand substrate. Mean erosion rates ranged from to gm−2·h−1 for wind and from.

Detection of Internal Erosion in Embankment Dams – Possible Methods in resistivity and Streaming Potential (SP) as the most appropriate methods to study internal erosion and seepage (Johansson et al, ). The relative sensitivity of these parameters to changes in the porosity was.

The potential soil loss in the study area has been categorized into four types viz., low, moderate, high and very high erosion based on the rate of erosion (t/ha/year), i.e., More erosion corresponds to very high erosion and least rate of erosion correspond to low erosion.

The rest two categories fall in between moderate and high erosion. 5 STRATEGY FOR EARLY DETECTION OF INTERNAL EROSION 46 Introduction 46 Strategy 47 Long term objective 47 Interim strategy 47 Prioritisation of Indicators 49 Role for Surveillance and for real time monitoring 52 Comparison of features 52 Response to detection of internal erosion The impact of storms relative potential erosion detection book the Catalonian coast is analyzed by classifying storms terms of their beach erosion potential.

This follows a two-step procedure in which, first, the storm-induced erosion. erosion. LiDAR, or “Light Detection and Ranging” is a method of very high-resolution elevation and contour mapping.

Obtain statewide “LiDAR” data and use this to identify areas of localized erosion. Complete critical source area analysis, evaluating the relative erosion potential. Internal erosion is a cause of embankment dam failure, thus it is important to develop methods for seepage monitoring and internal erosion detection.

In order to evaluate the potential of resistivity monitoring to give an early warning of such leakage/erosion, a test was undertaken on a rockfill embankment dam with a central glacial till core at the Røssvatn test facility in Norway. In land development, erosion control is important.

Aside from preventing water pollution due to runoff and the potential habitat loss of nearby ecosystems, erosion control also staves off soil loss and consequently, property loss. In urban areas, erosion control techniques are primarily concerned with stromwater runoff management, but soil loss due to winds and sloped Continue reading.

The high spatial and temporal resolution of PHOTOSED allows for the detection of different erosion patterns providing a high potential for further research including e.g., detailed studies of the interactions at the water-sediment interface or the unraveling of the complex interactions of physical, chemical and biological variables that are.

Addeddate Bookplateleaf Call number Camera Canon EOS 5D Mark II Cat_key External-identifier urn:oclc:record   Seepage erosion analysis for an earthen dam considers erosive modes of heave, piping, and internal erosion (Meyer et al.,van Zyl and Harr, ).

Given the large hydraulic gradient between Dana Lake and West Lake, the potential for seepage erosion is significant. Erosion potential index: a method for evaluating sheet erosion at stream crossings / By.

Anderson, Phillip, Anderson, Robert. Alberta. Alberta Forestry, Lands and Wildlife. If you are generating a PDF of a journal article or book chapter, please feel free to enter the title and author information.

The information you enter here will. erosion detection at the Rössvatn test site – experiences from blind test using resistivity, self potential, temperature and visual inspection. Elforsk reportp (available at ) Johansson S, Friborg J, Dahlin T, Sjödahl P () Long term resistivity and self.

Water erosion. Moving water is the most important natural erosional agent. The wastage of the sea coast, or coastal erosion, is brought about mainly by the action of sea waves but also, in part, by the disintegration or degradation of sea cliffs by atmospheric agents such as rain, frost, and tidal wave erosion is accomplished primarily by hydraulic pressure, the impact of waves.

erosion (µm) ΔCanary Number Transbond XT‐Halo Gingival Incisal Erosion = µm Example of before and after images and erosion [T-XT sample #5] R² = R² = 0 5 10 15 20 25 ‐10 ‐50 5 10 15 enamel erosion (µm) ΔCanary Number Fuji Ortho Whole Surface Gingival Incisal. Potential drop techniques have been employed in the power generation industry for the medium- and long-term monitoring of corrosion and/or erosion, but little quantitative data are available in.

Electrical discharge machining (EDM), also known as spark machining, spark eroding, die sinking, wire burning or wire erosion, is a metal fabrication process whereby a desired shape is obtained by using electrical discharges (sparks).

Material is removed from the work piece by a series of rapidly recurring current discharges between two electrodes, separated by a dielectric liquid and subject. In earth science, erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location (not to be confused with weathering which involves no movement).

This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow. Erosion has serious impacts on the fertility of soils, on water quality, and on reservoir storage capacity.

Methods of assessing erosion include experimental plots, sediment yield in rivers, field monitoring, remote sensing, Cesium, historical analysis, expert opinion, and modeling.

Combinations of these have often been used. the erosion on annual row-crop land, leave a residue cover greater than 30% after harvest and over the winter months, or inter-seed a cover crop (e.g., red clover in wheat, oats after silage corn).

Tillage Practices The potential for soil erosion by water is affected by. The Mo erosion of the 1 mm sample from RBS measurements is × 10 16 atoms cm −2 for the floating sample, while for the positive biased sample the Mo erosion is below the RBS detection limit of × 10 16 atoms cm −2.

The Mo erosion is strongly suppressed with positive biasing. Technical Bulletin – Corrosion Prevention and Detection 3 CORROSION DETECTION TECHNOLOGY Corrosion detection is a subset of the larger fields of Non-Destructive Evaluation (NDE) and Non-Destructive Inspection (NDI).

Many of the technologies of NDE/NDI lend themselves to the detection, characterization and quantification of corrosion damage. Detection 9 “Detection” is a ranking number associated with the best control from the list of detection-type controls, based on the criteria from the detection scale.

considers the likelihood of detection of the failure mode/cause, according to defined criteria. a relative ranking within the scope of the specific FMEA.

Internal erosion of the embankment into or at the foundation Assessing whether upstream flow limitation will occur Assessing the rate of development of the pipe Detection of internal erosion and piping General principles Some information on the rate of internal erosion and piping.

In addition, the high likelihood of significant increases in sea level also has the potential to affect future shore erosion trends (National Research Council, a). A quantitative understanding of these short- and long-term shoreline changes is essential for the establishment of rational poli- cies to regulate development in the coastal zone.

Numerous studies have investigated the role of diet in the etiology of erosion. 1, 2 Acidic compounds such as citric, malic and phosphoric acids added to or found naturally in beverages and foods increase the erosion potential of that particular food.

2 The presence of phosphate, calcium and fluoride can reduce the erosion potential of a. For the medium level wind erosion potential class, the potential sediment yield varies from ton ha −1 y −1 to 15 ton ha −1 y −1.

Moreover, for the high and very high level wind erosion potential classes, the potential sediment yield varies from ton ha −1 y −1 to ton ha −1 y −1.

Koblentz also warns that advances in the life sciences have the potential to heighten the lethality and variety of biological weapons. The considerable overlap between the equipment, materials and knowledge required to develop biological weapons, conduct civilian biomedical research, and develop biological defenses creates a multiuse dilemma Reviews: 4.

Figure 3 on page accurately shows how cut up the top layer (Kaibab Limestone) is, relative to all the smooth, parallel, generally softer layers below. Despite the hardness of Kaibab Limestone, its exposure to erosion has been much greater than that of the layers below.

(Some people mistakenly believe that each of those lower layers were, in turn, top layers subject to erosion for millions. A red flag is a warning or indicator, suggesting that there is a potential problem or threat with a company's stock, financial statements, or news reports.

Recent work [Williams et al.,a, b] assessed the potential of inferred ultrabasic and sulfur lava flows to produce thermal erosion channels on Io. In this paper we discuss an Ionian channel we have detected in Galileo images, and we investigate the potential role of thermal erosion in its formation.

A Deep Channel on Io. Three particle-size classes integrate the fine fraction: sand (2– mm), silt (– mm), and clay (relative capacity to available hold water for uptake by plants. Texture can be defined as the relative combination of sand, silt, and clay in a soil. Soil forms one of the vital natural resources in that it is useful for agricultural and engineering purposes as the Chief plant supporting material for producing food and fibre and as construction material for raising buildings respectively.

Soil erosion caused by the action of wind, water, ice and gravity over a terrain requires, therefore, prompt detection and implementation of proper. iv Earthquake-induced landslides, Sichuan Province, China, Photograph courtesy of Dr.

Yin Yueping, China Geological Survey, Ministry of Land and Resources, China.Wind erosion abrades surfaces and makes desert pavement, ventifacts, and desert varnish. Sand dunes are common wind deposits that come in different shapes, depending on winds and sand availability.

Loess is a very fine grained, wind-borne deposit that can .The variations in erosion depth may reflect variations in sediment erodibility (see discussion in section ), locally high shear erosion not captured by the shear stress estimate, or erosion that was caused by processes other than overland flow erosion.

Regarding the last explanation, we consider the possibility of erosion due to five common.