From Discourse to Logic

This paper develops an analysis of aspect shift and applies it to French and English. The Progressive, the Perfect/Parfait, and duration adverbials introduced by in or for are interpreted as aspectual operators which modify eventuality descriptions. The French past tenses are sensitive to aspect, but they do not change the aspectual class of the eventuality description themselves. Instead, they presuppose that the eventuality description they operate on is of the right aspectual type: the Passee Simple and Imparfait are tense operators which locate respectively events and states in the past. Free aspectual transitions may be triggered by coercion in order to satisfy the aspectual requirements on aspectual and temporal operators. The analysis is formulated within the framework of Discourse Representation Theory (DRT).

Aspect shift and coercion

A theoretical model is developed for wave heights and set-up in a surf zone. In the time averaged equations of energy and momentum the energy flux, radiation stress and energy dissipation are determined by simple approximations which include the surface roller in the breaker. Comparison with measurements shows good agreement. Also the transitions immediately after breaking are analysed and shown to be in accordance with the above mentioned ideas and results.

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Wave Heights and Set-up in a Surf Zone

Global warming in response to accumulation of human-induced greenhouse gases inside the atmosphere has already caused several visible consequences, among them increase of the Earth's mean temperature and ocean heat content, melting of glaciers, and loss of ice from the Greenland and Antarctica ice sheets. Ocean warming and land ice melt in turn are causing sea level to rise. Sea level rise and its impacts on coastal zones have become a question of growing interest in the scientific community, as well as in the media and public. In this review paper, we summarize the most up-to-date knowledge about sea level rise and its causes, highlighting the regional variability that superimposes the global mean rise. We also present sea level projections for the 21st century under different warming scenarios. We next address the issue of the sea level rise impacts. We question whether there is already observational evidence of coastal impacts of sea level rise and highlight the fact that results differ from one location to another. This suggests that the response of coastal systems to sea level rise is highly dependent on local natural and human settings. We finally show that in spite of remaining uncertainties about future sea levels and related impacts, it becomes possible to provide preliminary assessment of regional impacts of sea level rise. http://onlinelibrary.wiley.com/doi/10.1002/2013EF000188/abstract

https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1002/2013EF000188

Sea level rise and its coastal impacts

https://repository.tudelft.nl/islandora/object/uuid%3Aa45c14e5-05c0-48b3-8fed-2bea3740e69c/datastream/OBJ/download

Approaches to long-term modelling of coastal morphology : A review

Le passé composé narratif: une analyse discursive de L'Etranger de Camus

Storm surge models usually do not take into account the explicit effect of wind gusts on the sea surface height. However, as the wind speed enters quadratically into the shallow water equations, short-term fluctuations around the mean value do not average out. We investigate the impact of explicitly added gustiness on storm surge forecasts in the North Sea, using the WAQUA/DCSM model. The sensitivity of the model results to gustiness is tested with Monte Carlo simulations, and these are used to derive a parametrisation of the effect of gustiness on characteristics of storm surges. With the parametrisation and input from the ECMWF model archive, we run hindcasts for a few individual cases and also the 2007–2008 winter storm season. Although the explicit inclusion of gustiness increases the surge levels, it does not help to explain, and hence reduce, the errors in the model results. Moreover, the errors made by ignoring gustiness are small compared to other errors. We conclude that, at present, there is no need to include gustiness explicitly in storm surge calculations for the North Sea.

/pdf/impact-of-wind-gusts-on-sea-surface-height-in-storm-surge-cy6tjxp67o.pdf

H.E. de Swart

Papers

Le passé composé narratif: une analyse discursive de L'Etranger de Camus

Impact of wind gusts on sea surface height in storm surge modelling, application to the North Sea

Generation of nearshore oblique sand bars: sensitivity to sand transport formulation

Dynamics of shoreface-connected and inactive sand ridges on a shelf, Part 2: The role of sea level rise and associated changes in shelf geometry

Temps et aspect: de la morphologie à l'interprétation