<div>The Abbot Point to Hydrographers Passage bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the RV Escape during the period 6 Oct 2020 – 16 Mar 2021. This was a contracted survey conducted for the Australian Hydrographic Office by iXblue Pty Ltd as part of the Hydroscheme Industry Partnership Program. The survey area encompases a section of Two-Way Route from Abbot Point through Hydrographers Passage QLD. Bathymetry data was acquired using a Kongsberg EM 2040, and processed using QPS QINSy. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

The Surface Hydrology Points (Regional) dataset provides a set of related features classes to be used as the basis of the production of consistent hydrological information. This dataset contains a geometric representation of major hydrographic point elements - both natural and artificial. This dataset is the best available data supplied by Jurisdictions and aggregated by Geoscience Australia it is intended for defining hydrological features.

No abstract available

No abstract available

The data set provides outlines for the maximum extent of the benthic Biomes of Australia's Exclusive Economic Zone for regions beyond the shelf break not including the offshore island territories and Australian Antarctic Territory. These data were compiled in 2004 as part of the draft national benthic marine bioregionalisation which is designed to provide improved knowledge of Australia's seabed. The Biomes represent bio-geographic regions that capture narrow spatial distributions and depth ranges in benthic faunal distributions, based on the assumption that the demersal fish distributions are a surrogate of marine faunal distributions. The narrow spatial distributions were revealed as strong patterns of bathymetric zoning for key indicator species on the upper to mid slope. Due to available data, biomes were only defined in water depths of <1,130 m. A total of three biomes were defined: upper slope, mid-upper slope, and mid slope. Each of the biomes is separated by a biotone. The Biomes data set includes the names of units in the attribute table as well as the area and perimeter of each unit.

These colour and greyscale images are digital pictorial representations of a grid of onshore Bouguer Anomaly station values (Bouguer density of 2.67 t/m3) and offshore free air pseudo gravity station values extracted from the World Gravity Image (Sandwell and Smith, 1995). The onshore gravity observations are held in the Australian National Gravity Database (1997). These images contain wavelengths as small as 5000 m. Gravity digital data are available in point located form or as a grid for the Australian continent as a whole or for smaller areas.

These colour and greyscale images are digital pictorial representations of a grid of onshore Bouguer Anomaly station values (Bouguer density of 2.67 t/m3) and offshore free air pseudo gravity station values extracted from the World Gravity Image (Sandwell and Smith, 1995). The onshore gravity observations are held in the Australian National Gravity Database (1997). These images contain wavelengths as small as 30 000 m. Gravity digital data are available in point located form or as a grid for the Australian continent as a whole or for smaller areas.

The data represents the possibility that the substrate is rocky. It was created from the averaged topographic relief layer. The data values range from 0 to 100.

Geoscience Australia carried out marine surveys in southeast Tasmania in 2008 and 2009 (GA0315) to map seabed bathymetry and characterise benthic environments through observation of habitats using underwater towed video. Data was acquired using the Tasmania Aquaculture and Fisheries Institute (TAFI) Research Vessel Challenger. Bathymetric mapping was undertaken in seven survey areas, including: Freycinet Pensinula (83 sq km, east coast and shelf); Tasman Peninsula (117 sq km, east coast and shelf); Port Arthur and adjacent open coast (17 sq km); The Friars (41 sq km, south of Bruny Island); lower Huon River estuary (39 sq km); D Entrecastreaux Channel (7 sq km, at Tinderbox north of Bruny Island), and; Maria Island (3 sq km, western side). Video characterisations of the seabed concentrated on areas of bedrock reef and adjacent seabed in all mapped areas, except for D Entrecastreaux Channel and Maria Island. sisters_160 is an ArcINFO grid of the sisters, north of Tasman Peninsula survey area produced from the processed EM3002 bathymetry data using the CARIS HIPS and SIPS software