Dispersion and Connectivity of Land-Based Discharges Near the Mouth of a Coastal Inlet

Darren Cox; Jochen Kaempf; Milena Fernandes

doi:10.2112/JCOASTRES-D-12-00169

Dispersion and Connectivity of Land-Based Discharges Near the Mouth of a Coastal Inlet

Darren Cox, Jochen Kaempf, Milena Fernandes

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

This work investigates the physical marine connectivity between Adelaide's Barker Inlet and Port River system with discharges from a wastewater treatment plant that is located just outside the inlet. Cluster deployments of Lagrangian global positioning system drifters were used to determine the pathways and dispersive properties of currents in the region. We derived a lateral dispersivity of a mean value of 0.157 m²/s, ranging from 0.053 to 0.240 m²/s. Hydrodynamic modelling (calibrated with the dispersion data) indicates that, during winter months and neap tides, nutrients from the nearshore wastewater discharge intrude directly into the inlet. Modelling further indicates that this connectivity can be substantially reduced in the case of an offshore discharge ∼3 km offshore in a water depth of ∼5 m.

Original language	English
Pages (from-to)	100-109
Number of pages	10
Journal	Journal of Coastal Research
Volume	29
Issue number	6 SUPPL.A
DOIs	https://doi.org/10.2112/JCOASTRES-D-12-00169
Publication status	Published - Nov 2013

Keywords

Marine connectivity
Marine pollution
Marine systems.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.2112/JCOASTRES-D-12-00169

Cite this

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abstract = "This work investigates the physical marine connectivity between Adelaide's Barker Inlet and Port River system with discharges from a wastewater treatment plant that is located just outside the inlet. Cluster deployments of Lagrangian global positioning system drifters were used to determine the pathways and dispersive properties of currents in the region. We derived a lateral dispersivity of a mean value of 0.157 m2/s, ranging from 0.053 to 0.240 m2/s. Hydrodynamic modelling (calibrated with the dispersion data) indicates that, during winter months and neap tides, nutrients from the nearshore wastewater discharge intrude directly into the inlet. Modelling further indicates that this connectivity can be substantially reduced in the case of an offshore discharge ∼3 km offshore in a water depth of ∼5 m.",

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AU - Cox, Darren

AU - Kaempf, Jochen

AU - Fernandes, Milena

PY - 2013/11

Y1 - 2013/11

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AB - This work investigates the physical marine connectivity between Adelaide's Barker Inlet and Port River system with discharges from a wastewater treatment plant that is located just outside the inlet. Cluster deployments of Lagrangian global positioning system drifters were used to determine the pathways and dispersive properties of currents in the region. We derived a lateral dispersivity of a mean value of 0.157 m2/s, ranging from 0.053 to 0.240 m2/s. Hydrodynamic modelling (calibrated with the dispersion data) indicates that, during winter months and neap tides, nutrients from the nearshore wastewater discharge intrude directly into the inlet. Modelling further indicates that this connectivity can be substantially reduced in the case of an offshore discharge ∼3 km offshore in a water depth of ∼5 m.

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Dispersion and Connectivity of Land-Based Discharges Near the Mouth of a Coastal Inlet

Abstract

Keywords

UN SDGs

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