Marine environments of Southeast Australia (Gippsland Shelf and Bass Strait) and the impact of offshore petroleum exploration and production activity

Lavering, Ian H.

doi:10.1080/10641199409388263

Cited by 13 publications

(10 citation statements)

References 50 publications

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“…Of these studies, only one study has focused on the Banks Strait [3], which describes the geology of this channel as cold-water carbonates, and is a valuable source of sediment grabs information in this region (Figure 1). Information on the Banks Strait can be found from larger studies of the Bass strait, such as [24] who proposed a map of the sediment types for Bass Strait, including the Banks Strait, with results in accordance with the observations of [29], who indicates for Banks Strait a mean grain size between 0.5 and 2 mm (coarse sand). Sand waves in the Banks strait area were first reported by Slater in 1969 [3] (Figure 1) and then by Malikides in 1988 [13] based on the work of [3] but were not studied.…”

Section: Introductionmentioning

confidence: 64%

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Modelling Morphological Changes and Migration of Large Sand Waves in a Very Energetic Tidal Environment: Banks Strait, Australia

et al. 2021

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Banks Strait, Tasmania, Australia, has been identified as a potential site for the deployment of tidal turbines. In this study, the characterization of sediment transport and large sand waves for this site is performed. Observations of bed level change collected from surveys in 2018 showed a migration of large sand waves over a period of nine months. Migration rates in an excess of one hundred meters for nine months were found, which are large compared to the rate reported at other coastal sites, by several meters per year. A validated hydrodynamic model is coupled with a morphodynamic model to perform sensitivity tests and identify what parameters influence migration to better understand sediment dynamic in the Banks Strait. Numerical analysis showed a constant shift of the sand waves profile in an eastward direction, consistent with the observations. This migration was strongly linked with tidal asymmetry, with a residual current flowing towards the east. The principal parameters driving the migration of sand waves in the Banks Strait were found to be sediment sorting, bed friction and residual current. This study gives new insights for the seabed of Banks Strait and provides an assessment of the natural variability of sediment for futures tidal farms deployments.

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Section: Introductionmentioning

confidence: 64%

“…5-1.25 Few studies on sediment dynamics and seabed characterisation exist for the south of Bass Strait. Only earlier studies, mostly conducted in the 1980-1990s, are available [3,13,[21][22][23][24][25][26][27]. More recently, two surveys by Geoscience Australia (GA) took place in this area (GA 226/233) [28,29].…”

Section: Introductionmentioning

confidence: 99%

Modelling Morphological Changes and Migration of Large Sand Waves in a Very Energetic Tidal Environment: Banks Strait, Australia

et al. 2021

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“…Hydrocarbon levels used in laboratory experiments on effects of pollution and those measured in the field near hydrocarbon contamination range from 0.2 ugP 1 (ppb) to 48mgr' (ppm) (e.g. Laverling, 1994;Decembrini et al, 1995;Gunderson et al, 1996;Kocan et al, 1996;Stagg and Mclntosh, 1996;De Marty et al, 1997;Zhou et al, 1997). While the two tests at 4.01 mgl" 1 TEM showed a statistically significant difference in the mean time of food attack between pollution and control treatments, all three tests showed larger increases in the variances of the pollution treatments over controls.…”

Section: Discussionmentioning

confidence: 99%

The effects of hydrocarbon pollution from a two‐stroke outboard engine on the feeding behaviour ofLythrypnus dalli(Perciformes: Gobidae)

Shulman

Pomory

2000

Marine and Freshwater Behaviour and Physiology

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Feeding behaviour (time of attack on flake fish food) in Lythrypnus dalli was measured under pollution concentrations of 2.1 and 4.01mgl -1 total extractable material produced by a twostroke outboard engine. The variance of the times increased in pollution versus control treatments for both concentrations. No significant difference was found between the mean times of the control and 2.1 mgl -1 pollution treatments. A significant difference was found between the mean times of the control and pollution treatments for two different tests at 4.01 mgl -1 . The combination of the increase in mean time of food attack and the increase of variance indicates that pollution concentrations lower than LD50 levels change feeding behaviour, and thus may indirectly effect the survival of the organism.

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“…The near-seabed oceanography in the vicinity of the bank is influenced by coastal trapped wave (CTW) energy that is generated in the Bass Strait and propagates northwards along the eastern Victoria and southern coast of New South Wales (NSW; Morrow et al 1990;Harris et al 1991). Coastal trapped waves propagate along the East Gippsland shelf at a speed of ∼3.1 m s −1 (Morrow et al 1990) and coincide with the northerly-flowing tongue of cool (∼12 • C) Bass Strait water (Lavering 1994;). In addition, most of the Bass Strait is well mixed vertically due to wind-induced currents.…”

Section: Study Areamentioning

confidence: 99%

Geology - benthos relationships on a temperate rocky bank, eastern Bass Strait, Australia

Beaman

Daniell

Harris

2005

Mar. Freshwater Res.

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To better understand the possible relationships between the geology of the seabed and the associated biological communities, a multibeam sonar survey over New Zealand Star Bank in the eastern Bass Strait was conducted. A hierarchical method of benthic habitat mapping was applied to the secondary biotope and biological facies levels at the site (<10 km) scale. Four secondary biotopes and four biological facies have been defined on the basis of geomorphology revealed by the bathymetry model and the results of statistical analysis of the sediment and underwater video transect data over the bank. The major differences that control the distribution of biological communities in the New Zealand Star Bank area appear to be related to variations in substrate.(1) Hard-ground features related to high-relief granite outcrops are associated with diverse and abundant sessile and motile fauna. These faunal communities may be biologically modified to patchy barrens habitat by grazing urchins.(2) Unconsolidated sediment on a flat seabed is associated with sparse small sponges on the inner shelf. On the middle shelf and seaward of bank, the flat and muddy seabed supports a community dominated by infauna.(3) Unconsolidated sediment on a low-relief seabed is associated with an increase in the density and sizes of sponges concentrated on any low-relief feature raised above the surrounding flat seabed.

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Marine environments of Southeast Australia (Gippsland Shelf and Bass Strait) and the impact of offshore petroleum exploration and production activity

Cited by 13 publications

References 50 publications

Modelling Morphological Changes and Migration of Large Sand Waves in a Very Energetic Tidal Environment: Banks Strait, Australia

Modelling Morphological Changes and Migration of Large Sand Waves in a Very Energetic Tidal Environment: Banks Strait, Australia

The effects of hydrocarbon pollution from a two‐stroke outboard engine on the feeding behaviour ofLythrypnus dalli(Perciformes: Gobidae)

Geology - benthos relationships on a temperate rocky bank, eastern Bass Strait, Australia

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