For a channel-shoal system in a funnel-shaped basin the impact of dredging and dumping is investigated using a complex process-based model. First, the residual flow and sediment transport circulations are analysed for...For a channel-shoal system in a funnel-shaped basin the impact of dredging and dumping is investigated using a complex process-based model. First, the residual flow and sediment transport circulations are analysed for the channel-shoal pattern, which has emerged after a longterm model simulation. Results are compared to the Western Scheldt estuary, which forms the inspiration for this study. Subsequently, different dredge and dump scenarios are modelled, according to a conceptual model, in which ebb- and flood-channels and enclosed shoals form morphodynamic units (cells) with their own sediment circulation. Model results show that dumping sediment in a channel further reduces the channel depth and induces erosion in the opposite channel, which enhances tilting of the cross-section of the cell and eventually can lead to the degeneration of a multiple channel system into a single channel. The impact of different dredging and dumping cases agrees with results from a stability analysis. This means that this type of model applied to a realistic geometry can potentially be used for better prediction of the impact of human interventions.展开更多
This paper examines the relationship between language, particularly language that expresses aesthetic experiences of plant life, and corporeality. The theorisation of language is a keystone towards conceptualising par...This paper examines the relationship between language, particularly language that expresses aesthetic experiences of plant life, and corporeality. The theorisation of language is a keystone towards conceptualising participatory relationships between people and the botanical world. A comparative reading of the works of Henry David Thoreau and Martin Heidegger provides a framework for approaching language as embodied participation. Despite political differences, Thoreau and Heidegger shared a mutual conviction about the generative powers of language. Thoreau＇s literary practice partly involved immersion in places such as swamps and forests. Fittingly, Heidegger＇s explication of Rilke＇s concept of＂the Open＂ mirrors the participatory aesthetics of Thoreau. Both thinkers looked towards the capacities of poetics to galvanise the evolution of language. In response to the increasing dissection offered by contemporaneous theories of linguistics, Thoreau and Heidegger held the notion of language as a body in itself, one brought to life through immanence between sensuous bodies in the world. For each theorist, language was both bodily and a body. Their works evidence that multi-sensorial encounters with the natural world can be captured in language. The body of language may be engaged with as a whole living phenomenon rather than a dissected corpse as this comparative reading of Thoreau and Heidegger will intimate.展开更多
文摘For a channel-shoal system in a funnel-shaped basin the impact of dredging and dumping is investigated using a complex process-based model. First, the residual flow and sediment transport circulations are analysed for the channel-shoal pattern, which has emerged after a longterm model simulation. Results are compared to the Western Scheldt estuary, which forms the inspiration for this study. Subsequently, different dredge and dump scenarios are modelled, according to a conceptual model, in which ebb- and flood-channels and enclosed shoals form morphodynamic units (cells) with their own sediment circulation. Model results show that dumping sediment in a channel further reduces the channel depth and induces erosion in the opposite channel, which enhances tilting of the cross-section of the cell and eventually can lead to the degeneration of a multiple channel system into a single channel. The impact of different dredging and dumping cases agrees with results from a stability analysis. This means that this type of model applied to a realistic geometry can potentially be used for better prediction of the impact of human interventions.
文摘This paper examines the relationship between language, particularly language that expresses aesthetic experiences of plant life, and corporeality. The theorisation of language is a keystone towards conceptualising participatory relationships between people and the botanical world. A comparative reading of the works of Henry David Thoreau and Martin Heidegger provides a framework for approaching language as embodied participation. Despite political differences, Thoreau and Heidegger shared a mutual conviction about the generative powers of language. Thoreau＇s literary practice partly involved immersion in places such as swamps and forests. Fittingly, Heidegger＇s explication of Rilke＇s concept of＂the Open＂ mirrors the participatory aesthetics of Thoreau. Both thinkers looked towards the capacities of poetics to galvanise the evolution of language. In response to the increasing dissection offered by contemporaneous theories of linguistics, Thoreau and Heidegger held the notion of language as a body in itself, one brought to life through immanence between sensuous bodies in the world. For each theorist, language was both bodily and a body. Their works evidence that multi-sensorial encounters with the natural world can be captured in language. The body of language may be engaged with as a whole living phenomenon rather than a dissected corpse as this comparative reading of Thoreau and Heidegger will intimate.
