Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 71 for “"iceberg"”.
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Sea ice thickness and iceberg distribution in the Southern Ocean
… the thickness of ice measured is the presence of icebergs within a study region. This thesis reports on work carried out to investigate whether a correction to the sea ice thickness PDF can be made to account for icebergs and over what scale(s) this correction is valid. To answer this question …
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Papel e dinâmica dos portais concelhios : a ponta do iceberg
A cooperação entre a Biblioteca Pública e a Biblioteca Escolar constitui uma orientação clara presente nos Manifestos da IFLA/UNESCO e uma prática entre este tipo de bibliotecas que, em diversos países, tem assumido diferentes tipologias: colaboração; cooperação; integração. Cientes destas …
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Iceberg Stability Investigations Using Machine Learning for Alaska and Greenland
Iceberg-capsize tsunamigenesis is a coastal hazard not often discussed or observed due to the lack of frequency of which this process occurs. Greenlandic communities are proximal to coasts and are at risk of tsunamis caused by unprompted iceberg-capsize. We use time-lapse imagery from our own sites …
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“It’s Like an Iceberg”: Storying the Student Experience of Classroom-Based Anthropometric Measurement
Anthropometric measurement (AM) is conducted in classrooms for educational screening purposes, and is often done in the context of childhood obesity prevention. Past research has indicated that classroom-based AM practices pose risks to student well-being by compromising student privacy, …
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Power, data and knowledge in development sector impact evaluation activities: critically engaging with the impact iceberg
… to evaluation literature, is the “impact iceberg”. This is a diagnostic, big picture tool which describes contemporary legitimate impacts, and amplifies the illegitimate edited-out impacts, those silenced or submerged under the iceberg waterline. The second contribution is a set of four …
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Seafloor ploughmarks on the mid-Norwegian continental shelf reveal iceberg trajectories during the last glacial period
… linear to curvilinear depressions interpreted as iceberg ploughmarks were mapped across the mid-Norwegian continental shelf using high-resolution swath bathymetry data. The orientation and morphology of each iceberg ploughmark was calculated and analysed, with features being up to 30 km long and …
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Iceberg-keel ploughmarks on the seafloor of Antarctic continental shelves and the North Falkland Basin: implications for palaeo-glaciology
The use of iceberg-keel ploughmarks as proxy indicators of past and present iceberg morphology, keel depth and drift direction has seldom been approached in the southern hemisphere. Using high-resolution multi-beam swath bathymetry of the mid-shelf Pine Island Trough and outermost Weddell Sea shelf …
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Geophysical investigations of icebergs in Antarctica
… most important technical questions relating to iceberg transport are the causes of disintegration of the iceberg at sea. In order to obtain a better understanding of the factors involved in the response of icebergs to the environment, an automatic data collection platform was placed on a tabular …
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Where the Ice Ends: Calving and Ice-Ocean Interactions at Helheim Glacier and Beyond
… components of this dynamic mass loss signal is iceberg calving, the detachment of ice into the ocean. Ice dynamic and ice-ocean processes that influence iceberg calving occur across a range of spatial (cm to km) and temporal (minutes to years) scales, making them difficult to capture with …
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Using Space Borne Microwave Sensors to Track Large Antarctic Icebergs
<p>Studying Antarctic icebergs can provide insight into climatic changes of the Earth's frozen continent. Antarctic icebergs are regularly formed by the separations of massive sections of ice from ice shelves and glaciers. <p>The National Ice Center (NIC) is playing a major role in sea ice analysis …
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Effect of Electrostatic Spraying of Food-Grade Organic and Inorganic Acids, and Grape Seed Extract on Salmonella Typhimurium and Escherichia coli O157:H7 on Spinach and Iceberg Lettuce
… decontaminate leafy greens such as spinach and iceberg lettuce. Therefore, more effective treatments are essential to ensure the microbial safety of the produce at the selling point. Here, a multiple hurdle approach was applied: (1) Natural antimicrobials - organic acids (malic, lactic and …
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Determination of Iron and Iron-Binding Ligands In Seawater With Flow Injection Analysis and Voltammetry
… years have seen an increased occurrence of large icebergs in the Southern Ocean originating from Antarctic ice shelves. These free-drifting icebergs may serve as an important source of Fe to surrounding waters. I measured the concentrations and speciation of dissolved Fe via flow …
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Intervention Strategies for Escherichia coli O157:H7 and Salmonella in Organic Soil and on Fresh Produce
… Salmonella, and the native microflora of iceberg, romaine and spinach leaves. The quality parameters of the treated fresh produce were monitored, whereas the modes of action of cinnamaldehyde and Sporan® were investigated. The results showed that cinnamaldehyde had the highest bactericidal …
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The Quaternary evolution of the mid-Norwegian continental margin
… glacial–interglacial cycles. Evidence of iceberg ploughmarks found within the earliest Quaternary Naust surfaces documents a marine-terminating, calving Fennoscandian Ice Sheet margin extending periodically onto the mid-Norwegian shelf since the earliest Quaternary. Buried …
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An investigation into whether the 'iceberg' system of peer mediation training, and peer mediation, reduce levels of bullying, raise self-esteem, and increase pupil empowerment amongst upper primary age children
… in Birmingham. It investigates whether the ‘Iceberg’ system of peer mediation training, and the setting up of a peer mediation service, can reduce bullying, and have an effect on the self- concept of Year 5 pupils. The literature review section of the study reviews existing literature …
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Effects of ultrasonication in combination with selected sanitizer and surfactant on the quality and microbial safety of produce
… thus changes in specific gravity of whole head Iceberg lettuce at two storage (5 C and 23°C) and two washing solution (4 C and 23°C) temperatures were first investigated. The reduction of Escherichia coli O157:H7 population during a sanitization treatment as affected by produce surface area to …
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Numerical Modelling of Sediment Delivery from Tidewater Glaciers to the Marine Environment
… glaciers for the dominant transport processes of icebergrafting and glacial meltwater plumes. Icebergs calved from tidewater glaciers contain sediment, which is released as the icebergs melt. The SedBerg Model utilises Monte Carlo based techniques to simulate the formation, drift and melt of a …
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Late Weichselian and Holocene Glacimarine Sedimentation and Environments in Kejser Franz Josephs Fjord and On The Adjacent Continental Margin, East Greenland
… ii) determination of grain size distribution, iceberg rafted debris and physical properties (water content, porosity, grain density), iii) determination of stable oxygen and carbon isotopes, iv) radiocarbon dating, and v) calculation of sedimentation and accumulation rates. Additionaly, …
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Glacier Surge Dynamics on Western Axel Heiberg Island, Nunavut
… comprehensive reconstruction of the dynamics of Iceberg and Airdrop glaciers, located on western Axel Heiberg Island, and reveals detailed observations of a surge for the first time in the Canadian Arctic. A variety of remotely sensed data, including historical aerial photographs, declassified …
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