AndreaBozzo/ceres-open-data-index huggingface dataset:
Oil and Gas Pipelines of Australia 2017

This map contains information on Oil and Gas pipeline infrastructure.  Attributes have been added to comply with data standards and minor coding of line work has been achieved using annotation from the map. Further data has been added, specifically for the specific Acreage Release Areas.

Tags: AU, National dataset, Petroleum Data, Petroleum and Coal Geology, Published_External, Wells, dataset, hydrocarbons, marine, natural gas
Organization: Australian Ocean Data Network
Autonomous Underwater Vehicle (AUV) Sidescan Sonar Data - Caswell Sub-basin, Browse Basin Marine Survey (GA0345/GA0346/TAN1411)

Geoscience Australia (GA) conducted a marine survey (GA0345/GA0346/TAN1411) of the north-eastern Browse Basin (Caswell Sub-basin) between 9 October and 9 November 2014 to acquire seabed and shallow geological information to support an assessment of the CO2 storage potential of the basin. The survey, undertaken as part of the Department of Industry and Science's National CO2 Infrastructure Plan (NCIP), aimed to identify and characterise indicators of natural hydrocarbon or fluid seepage that may indicate compromised seal integrity in the region. 
The survey was conducted in three legs aboard the New Zealand research vessel RV Tangaroa, and included scientists and technical staff from GA, the NZ National Institute of Water and Atmospheric Research Ltd. (NIWA) and Fugro Survey Pty Ltd. Shipboard data (survey ID GA0345) collected included multibeam sonar bathymetry and backscatter over 12 areas (A1, A2, A3, A4, A6b, A7, A8, B1, C1, C2b, F1, M1) totalling 455 km2 in water depths ranging from 90 - 430 m, and 611 km of sub-bottom profile lines. Seabed samples were collected from 48 stations and included 99 Smith-McIntyre grabs and 41 piston cores. An Autonomous Underwater Vehicle (AUV) (survey ID GA0346) collected higher-resolution multibeam sonar bathymetry and backscatter data, totalling 7.7 km2, along with 71 line km of side scan sonar, underwater camera and sub-bottom profile data. Twenty two Remotely Operated Vehicle (ROV) missions collected 31 hours of underwater video, 657 still images, eight grabs and one core.
This catalogue entry refers to high and low frequencey sidescan sonar data collected using an Edgetech FS (120 kHz  410 kHz) system mounted to the AUV (GA0346) operating using the following parameters:
* High Frequency SSS  Trigger : 5 Hz; Pulse type: 0 : 390 kHz to 430 kHz; 2 ms (82 m range); Transmit Power: 100%
* Low Frequency SSS  Trigger coupled with SSS High (5 Hz); Pulse type: 0 : 98 kHz to 111 kHz; 9 ms (158 m range); Transmit Power: 100%

Tags: EEZ, Earth Sciences, Published_External, Raw Field Data
Organization: Australian Ocean Data Network
Waxy bitumen stranding in southern Australia: a geochemical study of multiple oil families and their likely origins

Reports of bitumen stranding on the ocean beaches of southern Australia date back to the early days of European settlement. Previous investigations have shown that this ‘coastal bitumen’ comprises three categories of stranded petroleum: waxy bitumen, asphaltite and oil slicks. All three varieties are physically and chemically distinct from each other, and bear no geochemical resemblance to any indigenous Australian crude oil. This study focuses on the most common variety, waxy bitumen, which accounted for 90% of the strandings on six South Australian beaches repeatedly surveyed during 1991–1992. Geochemical analysis of 96 individual specimens collected from these survey sites and other beaches in South Australia and western Victoria has shown them to be variously weathered high-wax crude oils of paraffinic to aromatic-intermediate bulk composition. Elemental, isotopic and biomarker differences allow their assignment to at least five oil families with inferred source facies that range from deep freshwater lacustrine through paludal and deltaic to euxinic marine, possibly deposited within different sedimentary basins. Family 1, 2 and 3 waxy bitumens all contain biomarkers derived from the freshwater alga Botryococcus sp. and tropical angiosperms (notably dipterocarps). Similar biomarker assemblages are unknown in Australian sedimentary basins but are common in Cenozoic crude oils and source rocks throughout western Indonesia. Family 4 waxy bitumens lack these biomarkers, but do contain dinosterane and 24-n-propylcholestane, indicative of a marine source affinity, while the carbon isotopic signatures and high pristane/phytane (Pr/Ph) ratios of Family 5 waxy bitumens are consistent with their origin from coal-rich source rocks deposited in fluvial to deltaic sedimentary successions. The majority of these waxy bitumens represent an oceanic influx of non-indigenous, Southeast Asian crude oils carried into the waters of southern Australia by the Leeuwin Current. Although they are likely to originate from natural seepage within the Indonesian Archipelago, it is unknown whether the parent oils emanate from submarine seeps or from inland seepages which are then carried to the sea by rivers. The common practice of tanker cleaning operations in the Java and Banda seas may augment the supply of natural bitumen to the beaches of Australia.

Tags: Bight Basin, Biomarker alkanes, Bremer Basin, Carbon isotopic signatures, Coastal bitumen, Indonesian provenance, Oil families, Otway Basin, Published_External, Waxy bitumen
Organization: Australian Ocean Data Network
Mesozoic sedimentary and volcanic rocks dredged from the northern Exmouth Plateau: petrography and microfacies

The deeply incised northern margin of the Exmouth Plateau has been dredged extensively along seismic reflection profiles, in water 2000- 5600 m deep, by R. V. Sonne (Cruise SO-8) and R. V. Rig Seismic (BMR Cruise 56). Geological samples obtained have greatly increased our understanding of the Late Triassic- Recent history of the margin.  Detailed petrography and microfacies analysis have enabled us to define seven major lithofacies associations. Three Late Triassic to Middle Jurassic associations were laid down roughly coevally on this southeastern margin of Tethys: (1) a Late Triassic- early Liassic volcanic and volcaniclastic association of early rift volcanics, (2) a Late Triassic- Middle Jurassic shallow water carbonate association, and (3) a ?Late Triassic- Middle Jurassic coal measure association.  The coal measures were uplifted and weathered to form a ?Jurassic ferruginous sediment and ironstone association. We distinguish 14 Late Triassic- Callovian microfacies types of shallow water carbonates, which can be correlated with the facies of coeval platform carbonates in the Alps and Mediterranean area of the Tethys ocean.  During Late Triassic times intertidal to shallow-subtidal carbonates were deposited in the Swan Canyon area close to the palaeo-coastline in the east, and deeper subtidal and shelf lithologies in the Wombat Plateau area in the west. During the latest Triassic and earliest Jurassic, the carbonate platform subsided and was structured into shoals with red biomicrites, and basinal areas with hemipelagic autochthonous micrites and redeposited calcarenitic turbidites.  Locally, uplifted blocks, such as the Wombat Plateau horst, were subaerially eroded during Jurassic or earliest Cretaceous times.  Carbonate platform deposition continued in places until Middle Jurassic time. Following breakup to form the Argo Abyssal Plain in the earliest Cretaceous, the margin started to subside and a Lower Cretaceous marginal-marine claystone association was deposited, followed by a hemipelagic late Lower Cretaceous radiolarian claystone. As subsidence continued, from Turonian times onwards, there was increasingly pelagic deposition of a Late Cretaceous to Cainozoic association of hemipelagic to eupelagic variably silicified marls and chalks. Complex diagenetic transformations involve silica, silicates, carbonates, and phosphates.

Tags: Earth Sciences, GA Publication, Journal, Published_External, WA, marine
Organization: Australian Ocean Data Network
Sedimenary Processes in the Wilkes Land Margin: A Record of Cenozoic East Antarctic Ice Sheet Evolution

Multichannel seismic data collected off Wilkes Land (East Antarctica) reveal four main units that represent distinct phases in the evolution of the Cenozoic depositional environment. A Cretaceous synrift succession is overlain by hemipelagic and distal terrigenous sequences deposited during Phase 1. Sediment ridges and debris-flow deposits mark the transition to Phase 2. Unit 3 records the maximum sediment input from the continent and is characterized by the predominance of turbidite deposits. During Phase 4 the sediment supply from the continental margin was reduced, and draping and filling were the dominant processes on the continental rise. Unit 4 also contains the deposits of sediment wave fields and asymmetric channel-levee systems. These four units are a response to the Cenozoic evolution of the East Antarctic Ice Sheet. During Phase 1, small ice caps were formed in the innermost continental areas. The ice volume increased under temperate glacial regimes during Phases 2 and 3, when large volumes of melt-water production led to high sediment discharge to the continental rise. Change to a polar regime occurred through Phase 4, when a thick prograding wedge developed on the continental shelf and slope and the sediment transport to the rise diminished, producing general starvation conditions.

Tags: AQ, Antarctic data, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, marine, sedimentology
Organization: Australian Ocean Data Network
SUPERSEDED: eReefs GBR1 Biogeochemical and sediments model data - Version 924

SUPERSEDED: This dataset has been superseded by GBR1_H2p0_B3p2_Cfur_Dnrt

Results from an early version of the 1km-resolution shelf-scale biogeochemical model of the Great Barrier Reef (GBR1). This version of the model was forced by version 1.85 of the eReefs GBR 1 km resolution hydrodynamic model, and made several improvements to the v926 (B1p0) model for: more accurate optical calculations; Normanby – particulate and dissolved loads corrected; Sediment tracer “Dust” added; Oxygen mass conservation part of diagnostics.

This model configuration and associated results dataset may also be referred to as "GBR4_H1p71_B1p9_Cfur_Dnrt" according to the eReefs simulation naming protocol,  but that protocol was not codified until after this dataset was superseeded, so it is usually referred to by the v924 identifier.

Organization: Australian Ocean Data Network
Marine Gravity, Magnetic and Bathymetry Levelled Line Data in the Australian Region

This compilation of gravity, magnetic and bathymetry ship-track line data, derived from the Geoscience Australia marine geophysical survey database 'Mardat', has been levelled in preparation for gridding. Data are included from Geoscience Australia geophysical surveys acquired since the 1970's as well as surveys from other institutions. The levelling process reduces mis ties between intersecting surveys of various vintages so that they can be integrated and represented as continuous surfaces.

The compilation consists of time-indexed ASCII fixed format files organised by survey with a record spacing approximately 150m. Each survey file contains geographic coordinates and the potential field and bathymetry data, both unlevelled (source data as in Mardat) and levelled. The compilation does not include shot-indexed data as may be recorded on seismic reflection surveys.

Note: The marine data was levelled by Desmond FitzGerald &amp; Associates from 1998-2001, and Ron Hackney in 2009-2011. The final data were further reviewed by Yvette Poudjom Djomani prior to the release.

Tags: Data Package, Earth Sciences, Published_External, bathymetry, data, gravity, magnetics, marine, marine survey
Organization: Australian Ocean Data Network
Benthic Chambers Nutrient Fluxes and the Biogeochemistry of the Seafloor of Port Phillip Bay 1995 and 1996

Benthic flux studies conducted from February 1995 to January 1996 focused on 
(1) spatial and temporal consistency in benthic fluxes at key sites in Port Phillip Bay 
(2) benthic chamber calibration 
(3) bio-irrigation  measurements 
(4) direct measurements of N2 for independent assessments of denitrification rates and efficiencies at key sites.  

The most important results of the study are:
1)  The general pattern in nutrient fluxes observed in 1994, is repeated in the 1995 data.
2)  The flux data show no sensitivity toward paddle stir rate indicating that benthic processes are insensitive to diffusive boundary layer thickness over a scale factor of two.
3)  The measured N:C flux ratios for the February 1995 study, was always less than the predicted value and the missing N is interpreted to be the result of  denitrification.  Direct measurements by Gas Chromatography (GC) of N2 fluxes generally supported this conclusion.
4)  Added nitrate was advected into the sediments.  Only the naturally formed nitrate was denitrified, suggesting that there are microbial microniches in which organic carbon oxidation, ammonification, nitrification and denitrification occurs simultaneously.
5)  The mass spectrometric measurements of N2 during January/December 1996 proved beyond doubt that denitrification occurs in the sediments of Port Phillip Bay.
6)  There was a significant seasonal effect in the denitrification efficiencies (measured) at site 16 (Yarra Estuary) but seasonal effects on denitrification efficiencies in the central sediments (Site 37) were marginal.
7)  Denitrifying efficiencies were consistently high in the central basin sediments.

Tags: AU-VIC, Earth Sciences, GA Publication, Published_External, Record, marine, marine survey
Organization: Australian Ocean Data Network
Jervis Bay Mangrove and Saltmarsh Data 1988-1991

This dataset contains data on species distributions, productivity, reproduction and growth of mangroves and saltmarshes from Jervis Bay, NSW. The data were obtained from a variety of surveys and measurement techniques between October 1988 and July 1991. Taxa identified comprised of about 130 vascular flora species, 15 of which are exotic. Species numbers range from 2 species in the mangroves to more than 80 in the fringe forest. Population structures of the 5 dominant species - Avicennia marina, Aegiceras corniculatum, Casuarina glauca, Sclerostegia arbuscula and Gahnia filum vary spatially. Temporal change in populations of Avicennia has occurred over time intervals of 20 years, the other species appear to have remained stable over the past 50 years. 13 maps on the mangrove and saltmarsh complexes have been prepared at a scale of 1:4000. The Jervis Bay mangroves and saltmarshes were compared with other locations around Batemans Bay and Port Hacking. NB - As the database has been lost, the only data still available are those published in the JERVIS BAY BASELINE STUDIES Final Report.

Organization: Australian Ocean Data Network
SI 1027 Clarence Strait to Dundas Strait (HIPP) Bathymetry Acquisition (20230050S)

The Clarence Strait to Dundas Strait&nbsp;bathymetry survey was acquired for the Australian Hydrographic Office (AHO) during the period 4 Jul 2023 – 9 Sep 2023. This was a contracted survey conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program. The survey area encompasses an area in Clarence Strait to Dundas Strait. Bathymetry data was acquired using Kongsberg  EM2040-07 and Kongsberg EM2040-P, and processed using QIMERA and BeamworX AutoClean 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, Australia-wide geoscience data, EARTH SCIENCES, Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry, HVC_144641, Multibeam, Oceans, Offshore Mapping, Published_External, Resourcing Australia's Prosperity, bathymetric grids, bathymetry, multibeam
Organization: Australian Ocean Data Network
Petrel Sub-basin Study 1995-1996 : Geohistory Modelling

AGSO's 1995-96 Petrel Sub-basin Study was undertaken within AGSO's Marine, Petroleum and Sedimentary Resources Division (MPSR) as part of MPSR's North West Shelf Project. The study was aimed at understanding the stratigraphic and structural development of the basin as a framework for more effective and efficient resource exploration. Specifically, the study aimed to:
- define the nature of the major basement elements underlying the Petrel Sub-basin and their influence on the development of the basin through time,
- determine the nature and age of the events that have controlled the initiation, distribution and tectonic evolution of the basin;
- define the nature and age of the basin fill, and the processes that have controlled its deposition and deformation; and, importantly,
- determine the factors controlling the development and distribution of the basin's petroleum systems and occurrences.

Tags: Earth Sciences, GA Publication, Published_External, Record, geology, stratigraphy
Organization: Australian Ocean Data Network
A Review of the Cenozoic Stratigraphy and Glacial History of the Lambert Graben - Prydz Bay Region, East Antarctica

The Cenozoic glacial history of East Antarctica is recorded in part by the stratigraphy of the Prydz Bay-Lambert Graben region. The glacigene strata and associated erosion surfaces record at least 10 intervals of glacial advance (with accompanying erosion and sediment compaction), and more than 17 intervals of glacial retreat (enabling open marine deposition in Prydz Bay and the Lambert Graben). The number of glacial advances and retreats is considerably less than would be expected from Milankovitch frequencies due to the incomplete stratigraphic record. Large advances of the Lambert Glacier caused progradation of the continental shelf edge. At times of extreme glacial retreat, marine conditions reached &gt; 450 km inland from the modern ice shelf edge. This review presents a partial reconstruction of Cenozoic glacial extent within Prydz Bay and the Lambert Graben that can be compared to eustatic sea-level records from the southern Australian continental margin.

Tags: AQ, Antarctic data, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, marine, stratigraphy
Organization: Australian Ocean Data Network
Seabed Character Mapping in the Great Australian Bight

This report presents the results of a regional seafloor mapping study carried out during 2000/2001 as part of Geoscience Australia's South and Southwest Regional Project. The aim was to support future Regional

Marine Planning in the Great Australian Bight (GAB) by underpinning biological, environmental and
economic assessments with basic information on geomorphology and the seabed character.
Four major geomorphological features are present on the margin in the South and Southwest (SSW) region: a continental shelf, marine terraces (including the Eyre and Ceduna Terraces in the GAB), a continental slope and a continental rise. The boundaries of these geomorphological features have been delineated and captured in a Geographical Information System (GIS). The GIS also includes the location of sedimentary basins, plateaus, terraces and canyons previously mapped in the region.
Seabed character mapping was carried out for the GAB area only. Five echo facies have been defined in the GAB area based on the interpretation of available 3.5kHz echo-sounding records and high-resolution seismic profiles in terms of acoustic facies, and their groundtruthing against seafloor samples. The interpretation of these facies has been digitised and captured into a GIS. The GIS includes key attributes for every echo facies. The acoustic facies distribution on the GAB margin and offshore in the South Australian abyssal plain shows the importance of geological inheritance to the geomorphology and sea-bed character of the region.

Facies I, which represents undisturbed, layered sediments is mainly localised on the shelf, the Eyre and Ceduna Terraces, and in the greater part of the abyssal plain. Facies II, which may represent more disturbed sediments, is confined to the Ceduna Terrace and along two elongated E-W trending areas on the abyssal plain near the continent-ocean boundary. Facies III, associated with extreme (IIIA), moderate (IIIC) and low (IIID) topography, underlies scarps, canyons, and depressions on the continental slope and the abyssal plain.

The distribution of acoustic facies from the upper slope down to the abyssal plain indicates that the major sedimentary process in the deep water GAB is deposition of pelagic sediments. Reworking of sediments by both bottom currents and gravity flows is probably limited to submarine canyons.

Tags: AU-SA, AU-WA, Earth Sciences, GA Publication, Published_External, Record, bathymetry, continental margins, geophysics, marine
Organization: Australian Ocean Data Network
2005 National Marine Bioregionalisation of Australia

The National Marine Bioregionalisation is a major scientific project headed by the National Oceans Office, designed to help define ecosystem boundaries in Australia's ocean territory. It brings together and illustrates the complexity and variability of marine environments and supports Australia's Oceans Policy commitment to an ecosystem-based approach to oceans management.

Tags: AU, Earth Sciences, GIS Dataset, National dataset, Published_External, Regional, dataset, geoscience, marine, marine jurisdiction
Organization: Australian Ocean Data Network