AndreaBozzo/ceres-open-data-index huggingface dataset:
The Creation of High Resolution Bathymetry Grids for Cocos (Keeling) Island

Cocos (Keeling) Island is located approximately 3,685km almost due west of Darwin. It is a mid-ocean atoll with a coral reef, and a very shallow (1 - 20 m) shelf surrounds the island. Bathymetry data are required in this area to help identify major seabed processes and habitats. The data are also required to enable modelling of tsunami as they interact with the shelf around the island and the coast. This report describes the methodology employed in creating detailed bathymetry data grids of the Cocos (Keeling) Island region. It covers data collection, quality control and gridding. Descriptions are provided of each dataset employed, the methods used to integrate the different datasets and the attributes of the new bathymetry models. Four new bathymetry grids are presented, including grids that integrate bathymetry with the island's topography.

This dataset is not to be used for navigational purposes.

Tags: 3D model, AusSeabed, CC, Chart-Derived, Compilation, DEM, Earth Sciences, GA Publication Record, HVC_144641, Multibeam, Published_External, Satellite-Derived, Singlebeam, bathymetry, marine, multibeam, seabed
Organization: Australian Ocean Data Network
Community assembly in marine macrofauna communities

Community assembly in macrofauna communities developed in artificial kelp holdfasts was monitored at 1-month intervals over a 13 month period using a sampling design that used systematic patterns of temporal overlap and changes in start and collection dates.

The hierarchical nature of the experimental design allowed several different approaches to analysis; by date of deployment and by date of collection of the artificial habitats, which enabled comparison of community assembly with and without the seasonal effects of the date of collection, and by community age to test whether there were alternative end-states to assembly depending on season or recruitment history.

Tags: Ecklonia radiata, Kelp holdfast communities, Temperate Reef
Organization: Australian Ocean Data Network
Stable carbon and hydrogen isotopic compositions of Paleozoic marine crude oils from the Canning Basin; comparison with other west Australian crude oils

This study focuses on the stable carbon (13C) and hydrogen (D) isotopic compositions of bulk, saturated and aromatic hydrocarbons in 17 Paleozoic marine crude oils from the Canning Basin, Western Australia. The stable carbon isotopic composition of crude oils is primarily dependent upon the source of the organic matter. Comparison to other Australian and global marine oils and source rocks demonstrates systematic changes in the bulk stable carbon isotopic composition throughout the Paleozoic. From the Early to the Late Paleozoic, Australian oils have become isotopically more enriched in 13C. The most depleted 13Csat value (-32.0') is from the saturated hydrocarbon fraction of a Cambrian oil-stain in the Arafura Basin whereas in the Canning Basin the oldest oils are Ordovician with 13Csat values of about -31'. Late Devonian marine oils from this basin exhibit slightly more enriched values (mean 13Csat = -29.2'), and Mississippian (early Carboniferous) marine oils from both the Canning and Bonaparte basins have mean 13Csat values in the order of -28'.
Carbon and hydrogen isotopic compositions of individual C7+ n-alkanes obtained for the three major oil families from the Canning Basin, as determined by biomarker analyses, corroborate previous findings and emphasise both facies variations and differences in the level of thermal maturation attained by their source rocks. The n-alkane-specific ?13C isotopic profiles of the Paleozoic marine oils from the Canning and Bonaparte basins characteristically follow the same trend as the bulk 13C isotopic values. The n-alkane-specific D isotopic profiles of the oils typically complement those of the carbon isotopic profiles; however, there are differences because organic matter produced by photosynthetic organisms in the source rocks is influenced by both water chemistry and thermal maturity, and as a result the oils show a greater range of values than the carbon isotopic data. The isotopic data has been used to refine the characterisation of oil families and petroleum systems of the Canning Basin. The similarities of the n-alkane-specific D isotopic profiles of the Ordovician-sourced Canning Basin oils with those of Early Triassic-sourced oils of the Perth Basin demonstrates that the typing of oil families should not be undertaken exclusively on a single parameter.

Tags: AU-NT, AU-WA, Earth Sciences, GA Publication, Other Publication, Published_External, geochemistry, geology, marine, petroleum geology
Organization: Australian Ocean Data Network
BMR journal of Australian geology and geophysics vol.9 no.2

Contents:
1.Strusz DL. Brachiopods from the Silurian of Fyshwick, Canberra, Australia. 
2.Young GC. Further petalichthyid remains (placoderm fishes, early Devonian) from the Taemas-Wee Jasper region, New South Wales. 
3.Nicoll RS. Multielement composition of the conodont species Polygnathus xylus xylus Stauffer, 1940 and Ozarkodina brevis (Bischoff and Ziegler, 1957) from the upper Devonian of the Canning Basin, Western Australia. 
4.Jones PJ. Treposellidae (Beyrichiacea: Ostracoda) from the latest Devonian (Strunian) of the Bonaparte Basin, Western Australia. 
5.Dickins JM. Late Palaeozoic glaciation. 
6.Shafik S. Calcareous nannofossils from the Toolebuc Formation, Eromanga Basin, Australia. 
7.Belford DJ. Late Albian planktonic foraminifera, Strickland River, Papua New Guinea. 
8.Smith MJ, Plane M. Pythonine snakes (Boidae) from the Miocene of Australia.
9.Casey JN, Romot N, Shergold JH. Armin Aleksander Opik (1898-1983). 
10.Laurie JR, Shergold JH. Phosphatic organisms and the correlation of early Cambrian carbonate formations in central Australia.
11.Shergold JH, Cooper RA. Late Cambrian trilobites from the Mariner Group, northern Victoria Land, Antarctica.

Tags: Earth Sciences, GA Publication, Journal, Published_External, palaeontology
Organization: Australian Ocean Data Network
SI 1025 Eclipse Shoals to Lombadina Point, Kimberley region (HIPP) Bathymetry Acquisition (20220013S)

The Eclipse Shoals to Lombadina Point, Kimberly Region bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Outer Limit during the period 12 September 2022 – 3 December 2022. This was a contracted survey conducted for the Australian Hydrographic Office by Ocean Infinity as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in Eclipse Shoals to Lombadina Point, Kimberley region, Western Australia. Bathymetry data was acquired using a Kongsberg EM2040P MKII, and processed using QPS Qimera processing software. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.

This dataset is not to be used for navigational purposes.

Tags: AusSeabed, Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry, Earth Sciences, HVC_144641, Oceans, Published External, Published_External, bathymetric grids, bathymetry, marine, multibeam
Organization: Australian Ocean Data Network
One Tree Island Rain From 18 Nov 2008 To 11 Jun 2021

The 'Wireless Sensor Networks Facility' (formerly known as Facility for The Automated Intelligent Monitoring of Marine Systems (FAIMMS)), part of the Great Barrier Reef Ocean Observing System project (GBROOS), is a facility of the Australian 'Integrated Marine Observing System' (IMOS) project. This data set was collected by the Great Barrier Reef Wireless Sensor Network.

Organization: Australian Ocean Data Network
Seabed Environments and Shallow Geology of the Leveque Shelf, Browse Basin, Western Australia: GA0340 - Interpretative report

In May 2013, Geoscience Australia, in collaboration with the Australian Institute of Marine Science, undertook a marine survey of the Leveque Shelf (survey number SOL5754/GA0340), a sub-basin of the Browse Basin, on the AIMS research vessel, Solander. The survey provided seabed and shallow geological information to support an assessment of the CO2 storage potential of the Browse sedimentary basin. The basin, located on the Northwest Shelf, Western Australia, was previously identified by the Carbon Storage Taskforce (2009) as potentially suitable for CO2 storage. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The principal aim of the Leveque Shelf marine survey was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Leveque Shelf area that may extend to the seabed. The survey also mapped seabed habitats and biota to provide information on communities and biophysical features that may be associated with seepage. This research, combined with deeper geological studies undertaken concurrently, addresses key questions on the potential for containment of CO2 in the basin's proposed CO2 storage unit, i.e. the basal sedimentary section (Late Jurassic and Early Cretaceous), and the regional integrity of the Heywood Formation (the seal unit overlying the main reservoir).

Tags: Physical Geography and Environmental Geoscience, Published_External, Report, W A
Organization: Australian Ocean Data Network
Seabed morphology and geomorphology of Cairns Seamount within the Coral Sea Marine Park, north-eastern Australia, Version 1 WMS

This OGC Web Map Service (WMS) contains geospatial seabed morphology and geomorphology information for Cairns Seamount within the Coral Sea Marine Park and are intended for use by marine park managers, regulators, the general public and other stakeholders. This web service uses the data product published in McNeil et al. (2023); eCat Record 147998.

Tags: Geomorphology, Geomorphology and Earth Surface Processes, Mapping, Morphology, Parks Australia, Published_External, Seabed, Spatial, WMS, web service
Organization: Australian Ocean Data Network
Bedload Sediment Transport Dynamics in a Macrotidal Embayment, and Implications for Export to the Southern Great Barrier Reef Shelf

Keppel Bay is a macrotidal embayment on a tectonically stable, tropical coast, which links the Fitzroy River with the Great Barrier Reef continental shelf. Estuaries and deltas act as conduits between catchments and inner shelf environments. Therefore, understanding sediment transport pathways in these complex systems is essential for the management of ecosystems such as coral-reefs that are potentially vulnerable to enhanced river sediment loads. Furthermore, the morphology and sediment dynamics of subtidal sand ridges and dunes are relatively poorly characterised in macrotidal estuaries, particularly in turbid, episodic systems such as the Fitzroy River and Keppel Bay. Our sedimentological analysis of seabed samples, shear-stress modelling and three-dimensional acoustic imaging reveals that Keppel Bay is a mixed wave- and tide-dominated estuarine system. Areas of sediment starvation and shoreward transport characterise the offshore zone, whereas a complex of both active and relict tidal sand ridges, and associated subaqueous dunes, dominate the relatively protected southern Keppel Bay. Transport within this region is highly dynamic and variable, with ebb-dominated sediment transport through tidal channels into the outer bay where there is a switch to wave-dominated shoreward transport. Ultimately, bedload sediments appear to be reworked back inshore and to the north, and are gradually infilling the bedrock-defined embayment. Our characterisation of the Keppel Bay system provides a detailed example of the physiography of the seaward portion of a tide-dominated system, and shows that sediment transport in these areas is influenced by a variable hydrodynamic regime as well as relict channels and bedrock topography.

Tags: AU-QLD, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, marine, sedimentology
Organization: Australian Ocean Data Network
Australia's Maritime Jurisdiction around Australia

Map showing Australia's Maritime Jurisdiction around the Australian Continent, not including Cocos Island, subantarctic territories or the AAT.
One of the 27 constituent maps of the "Australia's Maritime Jurisdiction Map Series" (GeoCat 71789).
Depicting Australia's extended continental shelf approved by the Commission on the Limits of the Continental Shelf in April 2008.  Background bathymetric image is derived from a combination of the 2009 9 arc second bathymetric and topographic grid by GA and a grid by Smith and Sandwell, 1997. Background land imagery derived from Blue Marble, NASA's Earth Observatory.
A0 sized .pdf downloadable from the web.

Tags: Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, marine, marine jurisdiction
Organization: Australian Ocean Data Network
RV Investigator Voyage IN2022_V09 eDNA Data

This record describes the environmental DNA (eDNA) data collected on Investigator voyage IN2022_V09, titled "Valuing Australia’s new Gascoyne Marine Park." The voyage took place between November 19, 2022 and December 19, 2022 (AEST), departing from Fremantle and returning to Fremantle.

The goal of this study was to leverage existing survey technology to design and test an eDNA sampler that captures an integrated eDNA sample over the length of a deep-water transect. Three different methods were compared for processing the captured eDNA from the sampler: filtering OCD water, extracting eDNA from sponge pieces, and filtering sponge rinse water. Using fish as our example organism, the identities of fishes from eDNA detections were also compared with bottom trawl survey data collected during the same survey, and the known regional species pool, to confirm the eDNA identifications were plausible.

Additional information regarding this dataset may be contained in the links below.

Organization: Australian Ocean Data Network
Installation of a Greenhouse Gas Baseline Atmospheric Monitoring Station

In July 2010 Geoscience Australia and CSIRO Marine &amp; Atmospheric Research jointly commissioned a new atmospheric composition monitoring station (' Arcturus') in central Queensland.  The facility is designed as a proto-type remotely operated `baseline monitoring station' such as could be deployed in areas that are likely targets for commercial scale carbon capture and geological storage (CCS). It is envisaged that such a station could act as a high quality reference point for later in-fill, site based, atmospheric monitoring associated with geological storage of CO2. 

The station uses two wavelength scanned cavity ringdown instruments to measure concentrations of carbon dioxide (CO2), methane (CH4), water vapour and the isotopic signature (?13C) of CO2. Meteorological parameters such as wind speed and wind direction are also measured. In combination with CSIRO's TAPM (The Air Pollution Model), data will be used to understand the local variations in CO2 and CH4 and the contributions of natural and anthropogenic sources in the area to this variability.

The site is located in a region that supports cropping, grazing, cattle feedlotting, coal mining and gas production activities, which may be associated with fluxes of CO2 and CH4. We present in this paper some of the challenges found during the installation and operation of the station in a remote, sub-tropical environment and how these were resolved. We will also present the first results from the site coupled with preliminary modelling of the relative contribution of large point source anthropogenic emissions and their contribution to the background.

Tags: Earth Sciences, GA Publication, Poster/Image, Published_External, carbon dioxide, geological sequestration, geological storage of CO2, greenhouse gas emissions
Organization: Australian Ocean Data Network
Characterisation and Correlation of Active Hydrocarbon Seepage using Geophysical Data Sets: an Example from the Tropical, Carbonate Shelf, the Yampi Shelf, Northwest Australia

For the first time in Australia, active present-day hydrocarbon seepage has been imaged on the tropical carbonate Yampi Shelf, in 50 and 90 m water depth. Seepage features consist of gas plumes in the water column associated with specific seabed features, such as clusters of reflective blocks, hard-grounds, pockmark fields and mounds. Seepage activity and intensity appear to vary with changes in pressure related to macro-tidal cycles. The seabed features coincide with sub-surface features such as areas of seismic signal attenuation under high amplitude reflectors, seismic discontinuities and bright spots. Hydrocarbon migration-seepage pathways appear to be controlled by the reactivation of pre-existing fractures and dykes within the basement. The types of seabed features and their preservation on a tropical carbonate shelf are strongly influenced by the coarse bioclastic nature of sediments and the high energy of macro-tidal currents and storm reworking.

Tags: AU-WA, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, marine
Organization: Australian Ocean Data Network
REH200901 - FV Rehua Biological Data

Biological data collected by FV Rehua during the transit from NZ to Devonport.  Samples were collected with  MIDOC net  fitted to commercial trawl nets.  In June 2009 scientific sampling of the Tasman Sea micronekton was carried out from a 65 metre factory freezer vessel, the FV Rehua, The voyage took place from Nelson New Zealand on the 17th 2009 June arriving in Devonport (Tasmania), Australia on the 22th June 2009. During the five day transit the vessel was under charter from Petuna Sealord to CSIRO Marine and Atmospheric Research for a total of 24 hrs. The charter time was approximately divided into eight three-hour deep-water deployments that formed three sets of day/night experiments.

Three main sampling instruments were used:

(1)  Sampling of micronekton (primarily biota &lt; 20 cm) was made from 1000 m depth to the surface in 5 sets of equally spaced (200 metre) strata using a fine-mesh multiple opening closing net system (MIDOC). This system was fitted to either the vessel's midwater or demersal commercial net. 

(2)  The digitised return signal from the vessel's 38 kHz Simrad ES60 echosounder was logged for the duration of the voyage. This will allow us to map the along-transect acoustic reflectivity at 38 kHz of the Tasman Sea basin from the surface down to 1500 metres. 

(3) An Acoustic-Optically System (AOS) was attached to the headline of the demersal net to measure the acoustic reflectivity of individual biota at two frequencies (38 and 120 kHz) and record concurrent optical images using digital SLR still cameras and PAL video system. The AOS was deployed vertically down to 1000 metres depths on two occasions. On four occasions it was attached to the headline of the demersal net that had been fitted with the MIDOC cod-end.

Organization: Australian Ocean Data Network
Introduction to 'Antarctic Cenozoic Palaeoenvironments: Geologic Record and Models'

The Antarctic region has profoundly affected the global climates of the past 50 million years, influencing sea levels, atmospheric composition and dynamics, and ocean circulation. A greater understanding of this region and the Antarctic cryosphere is crucial to a broader understanding of the global climates and palaeoceanography at all scales. Much of the information obtained during the last two decades derives from studies of sedimentary sequences drilled in and around Antarctica.

Tags: AQ, Antarctic data, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, climate, geoscience, marine
Organization: Australian Ocean Data Network
Physical Controls on Deep Water Coral Communities on the George V Land Slope, East Antarctica

Dense coral-sponge communities on the upper continental slope at 570 - 950 m off George V Land have been identified as a Vulnerable Marine Ecosystem in the Antarctic. The challenge is now to understand their likely distribution. Based on results from the Collaborative East Antarctic Marine Census survey of 2007/2008, we propose some hypotheses to explain their distribution. Icebergs scour to 500 m in this region and the lack of such disturbance is probably a factor allowing growth of rich benthic ecosystems. In addition, the richest communities are found in the heads of canyons. Two possible oceanographic mechanisms may link abundant filter feeder communities and canyon heads. The canyons in which they occur receive descending plumes of Antarctic Bottom Water formed on the George V shelf and these water masses could entrain abundant food for the benthos. Another possibility is that the canyons harbouring rich benthos are those that cut the shelf break. Such canyons are known sites of high productivity in other areas because of a number of oceanographic factors, including strong current flow and increased mixing with shelf waters, and the abrupt, complex topography. These hypotheses provide a framework for the identification of areas where there is a higher likelihood of encountering these Vulnerable Marine Ecosystems.

Tags: AQ, Abstract, Antarctic data, Earth Sciences, External Publication, Published_External, abiotic surrogates, habitat, marine, marine biodiversity
Organization: Australian Ocean Data Network
Seabed geomorphology: mapping Australia’s way to a sustainable ocean economy

Seabed geomorphology describes the shape and evolution of underwater landscapes. These landscapes interact with ocean currents to create diverse marine habitats. Similar to geological maps on land, maps of seabed geomorphology are vital for making informed decisions to support the sustainable growth of our Ocean Economy.



As we gather more detailed seabed data and face increasing ocean pressures, there's a need for new, standardised maps that support consistent decision making at multiple scales and between administrative jurisdictions. Dr Rachel Nanson and an international team have developed a new seabed geomorphology classification system that is designed to simplify complex seabed interpretations into a map format that is accessible to a broad range of end users.



This approach is being adopted internationally and is currently being implemented by Geoscience Australia. We are using the method to map parts of Australia’s extensive Marine Park network and to support government to make informed decisions regarding Australia’s rapidly expanding Offshore Renewable Energy sector

Tags: DGAL, Geomorphology and earth surface processes, Outreach, Published_External, Wednesday Seminars, mapping, marine geomorphology
Organization: Australian Ocean Data Network