408 resultados para TIDES


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MH copy has 2 leaves of plates not found in LC copy nor in any other copy reported to NUC pre-1956.

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"Comprehending, an account of the figure, magnitude, and motion of the earth; with the natural changes of its surface, caused by floods, earthquakes, &c. together with the principles of meteorology and astronomy; with the theory of the tides, &c. Preceded by an extensive selection of astronomical, and other definitions; and illustrated by a great variety of problems, questions, for the examination of the student, &c. &c. Designed for the instruction of youth."

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Vol. 4 is 1st edition.

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The forces of matter. The chemical history of a candle. By M. Faraday--On the conservation of force. Ice and glaciers. By H. von Helmholtz--The wave theory of light. The tides. By Sir W. Thomson (Lord Kelvin)--The extent of the universe, by S. Newcomb--Geographical evolution, by Sir A. Geikie.

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With this is bound Tschudi, Johann Jakob von. Reise durch die Andes von Süd-Amerika, von Cordova nach Cobija im jahre 1858; Barth, Heinrich. Dr. H. Barth's reise von Trapezunt durch die nördliche hälfte Klein-Asiens nach Scutari im herbst 1858; Lejean Guillame. Ethnographie de la Turquie d'Europe; Wagner Moritz. Beiträge zu einer physisch-geographischen skizze des Isthmus von Panana; Hassenstein, Bruno. Ost-Africa zwischen Chartum und dem Rothen meere bis Suakin und Massaua.

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On t.-p. of v. 4: With a memoir of the translator, by his son, Nathaniel Ingersoll Bowditch. Boston, C.C. Little and J. Brown.

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Mode of access: Internet.

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Editor: R. Ingram-Brown.

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Mode of access: Internet.

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Senior thesis written for Oceanography 445

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Senior thesis written for Oceanography 445

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Field observations on an unconfined coastal aquifer showed that a groundwater pulse, generated by it moderate (significant wave height, H-sig similar to 4.5 m) wave/storm event, induced significant oscillations in the salt-freshwater interface of the order of several metres in the horizontal direction. A dynamic sharp-interface model is developed to quantify the mechanism of these interface oscillations. The model uses the 50% seawater salinity contour as the location of the equivalent sharp-interface. The model was calibrated against the observed groundwater table fluctuations. It predicted reasonably well the interface oscillations with a slight over-prediction of the oscillation magnitude and a steepening of the interface. The neglect of mixing in the salt-freshwater mixing zone by the sharp-interface model is suggested as a possible contributor to the discrepancies between the model predictions and observations. In contrast with the significant wave effects, there was no observable response of the interface to diurnal or semidiurnal tides. (C) 2004 Elsevier Ltd. All rights reserved.

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Large groundwater table fluctuations were observed in a coastal aquifer during an offshore storm. The storm induced significant changes of the mean shoreline elevation, characterized by a pulse-like oscillation. This pulse propagated in the aquifer, resulting in the water table fluctuations. A general analytical solution is derived to quantify this new mechanism of water table fluctuation. The solution is applied to field observations and is found to be able to predict reasonably well the observed storm-induced water table fluctuations. Based on the analytical solution, the damping characteristics and phase shift of the oscillation as it propagates inland are examined.

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Ross River virus (RE) is a mosquito-borne arbovirus responsible for outbreaks of polyarthritic disease throughout Australia. To better understand human and environmental factors driving such events, 57 historical reports oil RR Outbreaks between 1896 and 1998 were examined collectively. The magnitude, regularity, seasonality, and locality of outbreaks were found to be wide ranging; however, analysis of climatic and tidal data highlighted that environmental conditions let differently ill tropical, arid, and temperate regions. Overall, rainfall seems to be the single most important risk factor, with over 90% of major outbreak locations receiving higher than average rainfall in preceding mouths. Many temperatures were close to average, particularly in tropical populations; however, in arid regions, below average maximum temperatures predominated, and ill southeast temperate regions, above average minimum temperatures predominated. High spring tides preceded coastal Outbreaks, both in the presence and absence of rainfall, and the relationship between rainfall and the Southern Oscillation Index and Lit Nina episodes suggest they may be useful predictive tools, but only ill southeast temperate regions. Such heterogeneity predisposing outbreaks supports the notion that there are different RE epidemiologies throughout Australia but also Suggests that generic parameters for the prediction and control of outbreaks are of limited use at a local level.