AndreaBozzo/ceres-open-data-index huggingface dataset:
National Gravity Compilation 2019 tilt grid

Gravity data measure small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. 
This National Gravity Compilation 2019 tilt grid is derived from the 2019 Australian National Gravity Grids A series. These gravity data were acquired under the project No. 202008. The grid has a cell size of 0.00417 degrees (approximately 435m). This gravity anomaly grid is derived from ground observations stored in the Australian National Gravity Database (ANGD) as at September 2019, supplemented with offshore data sourced from v28.1 of the Global Gravity grid developed using data from the Scripps Institution of Oceanography, the National Oceanic and Atmospheric Administration (NOAA), and National Geospatial-Intelligence Agency (NGA) at Scripps Institution of Oceanography, University of California San Diego. Out of the approximately 1.8 million gravity observations, nearly 1.4 million gravity stations in the ANGD with marina data were used to generate this grid. The ground gravity data used in this grid has been acquired by the Commonwealth, State and Territory Governments, the mining and exploration industry, universities and research organisations from the 1940's to the present day. Station spacing varies from approximately 11 km down to less than 1 km, with major parts of the continent having station spacing between 2.5 and 7 km. Terrain corrections to gravity were calculated using both offshore bathymetry and onshore topography data. A tilt filter was then applied to the complete spherical cap Bouguer anomaly (A series) to produce this grid covering Australia and its continental margins.

Tags: A series, Australia, Bouguer, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, None, Published_External, complete, digital data, geophysical survey, geophysics, grav, gravity, grid, ground, marine, national, raster, satellite, spherical cap, survey 202008, tilt
Organization: Australian Ocean Data Network
Summary Of Data And Results Bass Basin, Tasmania Esso Bass No. 1 And No. 2 Wells Of Esso Exploration And Production Australia Inc. (Formerly Esso Exploration  Australia Inc.)

Esso Bass No. 1 Well was drilled by Global Marine Australasia pty Ltd. using "Glomar Ill", for Esso Exploration Australia Inc., in Tasmanian waters of the offshore Bass Basin. about 88 miles east of King Island. The well was spudded on 21 July 1965, reached total depth of 7717 feet on 8 September. and was plugged and abandoned on 14 September 1965. A full programme of logging and coring was undertaken.

The Bass Basin, lying entirely between Victoria and Tasmania, covers an area of approximately 25.000 square miles. From magnetic data. it was inferred to contain a thick sedimentary section; from seismic data and extrapolated regional geology. The sedimentary section was thought to include Tertiary sediments favourable for petroleum generation and accumulation. The well was thus designed to gain stratigraphic information on the Tertiary and upper part of the Mesozoic sedimentary section in the
north central Bass Basin. and. in particular. to test the petroleum potential of a postulated reef-type anomaly in the Miocene section.

Tags: AU-TAS, Earth Sciences, GA Publication, Other Publication, Published_External, petroleum exploration
Organization: Australian Ocean Data Network
AHO Reference Surfaces Broome 0.5m 2023 (20230010R)

The Broome Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) during the period 25 Sep 2020 - 26 Sep 2020. This surface was created from a contracted national reference survey between Gantheaume Point and Talboys Rock, Broome WA, collected for the purpose of calibrating multibeam echosounders.&nbsp;It was conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program, acquired using Kongsberg EM 2040D, and processed using Caris HIPS &amp; SIPS. A grid in 0.5m resolution is provided for the surveyed site within this survey area in MSL, LAT and Ellipsoid vertical datum. The dataset was then exported as a 0.5m resolution, 32 bit floating point GeoTIFF grid of the survey area.

This dataset is not to be used for navigational purposes.

Tags: AusSeabed, EARTH SCIENCES, Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry, HVC_144641, Oceans, Published_External, bathymetric grids, bathymetry, marine, multibeam
Organization: Australian Ocean Data Network
Flushing of Australian estuaries, coastal lakes and embayments: an overview with biogeochemical commentary

Examination of a simple, but quantitative parameter, Sf/So, the ratio of average salinity of a coastal waterway/marine source water salinity, both geographically and temporally, identified five major types of coastal environment around Australia: (i) runoff-dominated annually - found mostly on the eastern seaboard, where rainfall is near continuous year-round ; (ii) seawater-dominated annually- large embayments with small runoffs; (iii) evaporation-dominated annually - found on the fringes of arid climate zones of western Australia, such as Shark Bay and in South Australia, Spencer and St. Vincents Gulf; (iv) runoff-dominated in the summer monsoon and evaporation-dominated in the winter - e.g. the northern Australian estuaries near moist-tropical and semi-arid zones with summer rains; and (v) runoff-dominated in the winter and evaporation-dominated in the summer-e.g. the estuaries and coastal lakes of southwestern Australia. A general equation of salt and water mass balances, including an evaporation term, was used to estimate freshwater residence time, a proxy for dissolved anthropogenic input. Geographic and temporal variation in climate forcing factors, notably seasonal variation in rain-fall and runoff and the net of evaporation and precipitation, exert major controls on residence time and flushing of Australian coastal environments. The inverse of the residence time (1/T day-1) is an important parameter in the estimation of quantities of dissolved anthropogenic inputs flushed from the coastal environment to the sea. As such, it is one important parameter for evaluating coastal water quality.

Tags: Earth Sciences, GA Publication, Journal, Published_External, marine
Organization: Australian Ocean Data Network
Coastal Waters (State/Territory Powers) Act 1980 - Australian Maritime Boundaries 2020 - Geodatabase

Geoscience Australia has the primary role in the delineation of Australia's domestic and international maritime limits and boundaries. An output of this activity is the development of the Australian Maritime Boundaries (AMB) data. AMB is a GIS data product, replacing Australian Maritime Boundaries 2014a (AMB2014a), providing access to the data for Australia's maritime zones. AMB is a digital representation of Australia's limits and boundaries as established under the Seas and Submerged Lands Act 1973 and associated proclamations. The data also include a representation of the limits by which the scheduled and offshore areas of each of the States and of the Northern Territory are determined under the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (OPGGSA). In the event of an inconsistency between AMB data and the limits under any legislation, the latter prevails. The data have been published by Geoscience Australia in consultation with other relevant Commonwealth Government agencies including the Attorney-General's Department, the Department of Foreign Affairs and Trade and the Australian Hydrographic Office. 

AMB data comprise the territorial straight baselines and the outer limits of each zone, together with maritime boundaries determined by treaties between Australia and neighbouring countries. All data coordinates are supplied in the GDA94 datum. The data reflects the location of the coastline within the constraints of available source material at the time of production. AMB Data can also be viewed on-line via AMSIS (http://www.ga.gov.au/marine/jurisdiction/amsis.html). Product Specifications Coverage: Australia including all external territories Currency: December 2020. Coordinates: Geographical Datum: GDA94 (functionally equivalent to WGS84). Format: ESRI Geodatabase and REST web service - free online.
The area of coverage of the AMB data is for the whole of the Australian marine jurisdiction which includes waters adjacent to the mainland, offshore islands and External Territories.  The geographical extent is approximately between the latitude limits of 7 S to 70 S and the longitude limits 40 E to 175 E.

This dataset includes the following disclaimer:
AMB data is a digital representation of the territorial sea baseline and of the outer limits of Australia's maritime zones.  The baseline and zones are established under the Seas and Submerged Lands Act 1973.  The data also includes a representation of the limits by which the waters adjacent to each of the Australian States and of the Northern Territory are determined under the Coastal Waters (State Powers) Act 1980, Coastal Waters (Northern Territory Powers) Act 1980 and the Offshore Petroleum and Greenhouse Gas Storage Act 2006.  In the event of an inconsistency between AMB data and the baselines and limits under the legislation, the latter prevails.

Tags: AU, GIS Dataset Thematic, Geospatial Information Systems, HVC_144653, Published_External, marine
Organization: Australian Ocean Data Network
A reconnaissance investigation of the major Palaeozoic aquifers in the Canning Basin, Western Australia, in relation to Zn-Pb mineralisation

The Canning Basin is a large sedimentary basin with an onshore area of 430 000 km2.  It has a thick, discontinuous succession of Palaeozoic and Mesozoic marine and continental sedimentary rocks covered by Cainozoic surficial sediments.  It contains several Zn-Pb sulphide deposits of Mississippi Valley type, mainly in the Lennard Shelf and along the Admiral Bay Fault. To provide a framework for understanding the mechanism of this mineralisation, we made a reconnaissance study of the Palaeozoic aquifers, based on an analysis of data from 30 oil exploration wells.  The major Palaeozoic aquifers in the basin are the Early Permian Poole Sandstone, the Late Carboniferous to Early Permian Grant Group, and the Devonian Tandalgoo Sandstone.  These aquifers have a complex structure owing to tectonic and erosional effects, and they are interconnected with the younger and shallower aquifers. The general direction of groundwater flow in the Palaeozoic aquifers is from the southeast toward the west and northwest. Groundwater velocity is in the range of 0.2 to 0.5 m y-1, and temperature ranges from 30 to 83Â°C, Groundwater salinity is low at the margins of the basin, but increases with depth and along the flow lines . Our study suggests that the present hydrogeological regime is basically different from those active in the Silurian to Permian, the interval during which the Zn-Pb deposits are considered to have formed.  Compaction-driven and gravity-driven fluid-flow models for the formation of the Zn-Pb deposits are considered.  A geopressured zone encountered in one location is evidence that the ore-forming fluids could have been generated in deeper parts of the basin, and expelled by compaction into shale-enclosed sandstone lenses. These geopressured lenses could subsequently have been faulted, and the potential ore-forming fluids released. There is insufficient information on the tectonics, palaeotopography, and age of the mineralisation to assess the gravity-driven fluid flow-modeL

Tags: Earth Sciences, GA Publication, Journal, Published_External, WA
Organization: Australian Ocean Data Network
Geophysical Data Collection - hosted at the National Computational Infrastructure (NCI)

The Geophysical Data Collection hosted at the National Computational Infrastructure (NCI) contains individual airborne survey lines of geophysical data, including Total Magnetic Intensity, Gamma-ray spectrometry (radiometrics - K, Th, U) and elevation, as well as, ground based Bouguer Gravity. These datasets have been used to create both survey scale and national grids for the geophysical data types.

The data were sourced from publicly available government- and company-acquired geophysical surveys in Australia and its surrounding marine area.

Other GA Geophysical Data Collections not held at the NCI are discoverable via eCat# 100444

Tags: Australia, Bouguer gravity, NCI, Published_External, airborne digital data, digital terrain model, gamma-ray, geophysical data collection, geophysical survey, geophysics, geoscience, magnetics, potassium, radiometrics, thorium, uranium
Organization: Australian Ocean Data Network
Microfossils and molecular fossils in Barnicarndy 1 core record the evolution of terrestrial and marine organisms in the early Ordovician Nambeet Formation, Canning Basin, Western Australia

Scientific studies undertaken on core from the Barnicarndy 1 well drilled in 2019 in the onshore Canning Basin in Western Australia as part of the Exploring for the Future program have shown that the well penetrated a thick section of the early Ordovician Nambeet Formation which contains abundant fossils reflective of deposition in an open marine environment. Although the calcareous shales are organically poor (average total organic carbon content 0.17 wt%) processing of 42 drill core samples recovered a plethora of acid-resistant, organic-walled microfossils. Seven core samples with the highest organic content were analysed for their molecular (biomarker) fossils and stable isotopic composition to provide insights into the type of organic matter preserved, and the redox conditions of the sediments during deposition.



This Abstract was submitted/presented to the 2022 Australian Organic Geochemistry Conference 27-29 November (https://events.csiro.au/Events/2022/October/5/Australian-Organic-Geochemistry-Conference)

Tags: Acritarchs, Barnicarndy 1, Canning Basin, EFTF – Exploring for the Future, Early plant spores (cryptospores), Exploration Geochemistry, Isotope Geochemistry, Kidson Sub-basin, Nambeet Formation, Ordovician, Organic Geochemistry, Palaeontology (incl. Palynology), Published_External
Organization: Australian Ocean Data Network
GIS Layer: Sea Salinity in the Australian Region

ESRI grids showing sea salinity, linearly interpolated from CARS2000 mean and seasonal fields to 0.1 degree spaced grid, at depths of 0, 150, 500, 1000 and 2000 metres. The loess filter used to create CARS2000 resolves at each point a mean value and a sinusoid with 1 year period (and in some cases a 6 month period sinusoid - the "semi-annual cycle".) The provided "annual amplitude" is simply the magnitude of that annual sinusoid. CARS is a set of seasonal maps of temperature, salinity, dissolved oxygen, nitrate, phosphate and silicate, generated using Loess mapping from all available oceanographic data in the region. It covers the region 100-200E, 50-0S, on a 0.5 degree grid, and on 56 standard depth levels. Higher resolution versions are also available for the Australian continental shelf. The data was obtained from the World Ocean Atlas 98 and CSIRO Marine and NIWA archives. It was designed to improve on the Levitus WOA98 Atlas, in the Australian region. CARS2000 is derived from ocean cast data, which is always measured above the sea floor. However, for properties which do not change rapidly near the sea floor, this would not lead to a significant error. All the limitations of CARS2000 also apply here.

Organization: Australian Ocean Data Network
eReefs GBR4 biogeochemistry and sediments v3.1 pre-industrial catchment scenario

Results from version 3.1 of the 4km-resolution regional-scale biogeochemistry and sediments model of the Great Barrier Reef (GBR), forced by version 2.0 of the 4km-resolution hydrodynamic model and with catchment forcing from P2R SOURCE Catchments with pre-industrial catchment condition from  December 01, 2018 to June 30, 2018 and then Empirical SOURCE Catchments with pre-industrial catchment condition from July 1, 2018 to April 30, 2019.

This model configuration and associated results dataset may be referred to as "GBR4_H2p0_B3p1_Cq3p_Dhnd" according to the eReefs biogeochemical simulation naming protocol. 

The model ran in hindcast-mode as one of a suite of simulations which included baseline (GBR4_H2p0_B3p1_Cq3b_Dhnd) and reduced-load (GBR4_H2p0_B3p1_Cq3R_Dhnd) catchment scenarios.

Organization: Australian Ocean Data Network
Oceanic Shoals Commonwealth Marine Reserve (Timor Sea) Biodiversity Survey: GA0339/SOL5650 Post-Survey Report

This report provides details of activities undertaken by the Australian Institute of Marine Science (AIMS), Geoscience Australia, the University of Western Australia and the Museum and Art Gallery of the Northern Territory during a marine biodiversity survey to the Oceanic Shoals Commonwealth Marine Reserve (Timor Sea) in 2012. The survey was an activity within the Australian Government's National Environmental Research Program Marine Biodiversity Hub and is a key component of Theme 4 - Regional Biodiversity Discovery to Support Marine Bioregional Plans. Data collected during the survey will be used to support research being undertaken in other Themes of the Marine Biodiversity Hub, including the modelling of ecosystem processes for the northern region, and to support the work programs of the Department of  Environment.

Tags: AU-WA, GA Publication, Marine Geoscience, NERP, Published_External, Record, bathymetry, marine, marine biodiversity, marine environmental baselines, marine survey
Organization: Australian Ocean Data Network
Capel and Faust Basins - New Information from the Offshore Frontier Between Australia, New Zealand and New Caledonia

New geophysical and geological datasets have been acquired in water depths of 1300-2500m from the Capel and Faust basins located some 800 km east of Brisbane (Figure 1). Between December 2006 and January 2007 Geoscience Australia acquired ~6000 km of industry standard 2D seismic data using an 8 km solid streamer.  The survey identified numerous depocentres, some up to 150 km in length and 40 km in width with up to 7 km of sediment fill. Initial interpretation has identified a potential pre-rift succession, three syn-rift phases (clastic/volcanic), and two post-rift carbonate packages. Episodes of post-rift igneous activity are also apparent. Possible correlations with the Capricorn, Great South and/or deepwater Taranaki basins are suggested.

In late 2007 the RV Tangaroa completed a marine reconnaissance survey of the Capel and Faust basins. Geophysical datasets acquired on this survey included gravity, magnetics, multibeam sonar, and sub-bottom profiler data. An accompanying seafloor sampling program acquired geological and biological samples from potential seepage sites and representative areas of the sea floor, to search for indications of active petroleum systems and to document marine biodiversity and habitats.  These datasets are designed to better define the region's petroleum prospectivity and inform marine and environmental planning decisions.   

The multibeam sonar revealed seafloor features that appear to reflect the underlying basin structure, such as fault-related slumps. The gravity and magnetic coverages are expected to significantly improve the delineation of depocentre boundaries. Seafloor sampling and camera footages provided information on the substrate composition and potential fluid escape sites. Current work involves the initial interpretation of these datasets and their integration to define the rift basin architecture and tectonostratigraphic history to better understand the region's petroleum prospectivity.

Tags: AU, Earth Sciences, External Publication, NZ, Published_External, marine, petroleum exploration, sedimentary basins, seismics, stratigraphy, structural geology
Organization: Australian Ocean Data Network
pmd*CRC Architecture A1 Project. Final Project Report

Architecture A1 Project -What are the fundamental characteristics of mineralised (trans-lithospheric) fault systems? The principal aim of the project has been to understand why some faults systems are mineralised and why others are barren, and whether a mantle component is essential to form major ore deposits. The objective of the study has been to determine, and rank, a set of critical parameters that could be applied to identify favourable conduits for ore-forming fluids and whether these fault systems are likely to be metallogenically well-endowed with respect to precious and base metal mineralisation.

Tags: Earth Sciences, Published_External, Report, economic geology, marine, mineral exploration, pmd*CRC
Organization: Australian Ocean Data Network
South Perth Basin 1 and 2, BMR Marine Survey 80 and 81 : Explanatory Notes to Accompany the Release of Non-seismic Data

This report summarises the processing techniques applied to thenon-seismic geophysical data gathered during South Perth Basin 1and 2, BMR MARINE Survey 80 and 81, which was conducted betweenthe 9th of July and the 14th of October 1988, departing fromPerth and finishing at Adelaide. Each survey was of one monthduration with a month between the surveys for crew change andmaintenance. The survey was part of BMR Project No 121.14.

Tags: Earth Sciences, GA Publication, Published_External, Record, geophysics, marine, marine survey
Organization: Australian Ocean Data Network
Cruise Preview Report Prydz Bay and Mac.Robertson Shelf, Antarctica January-March 1993

The Natural Variability and Past Environmental change Sub-program of the Co-operative Research Centre for Antarctic and Southern Ocean Environments aims to use the records contained in ice and sediments to understand past environmental change to calibrate climatic models. The marine geoscience program for Voyage 7 consists of a sea bed sampling program designed to

. Elucidate sedimentation processes on the Antarctic shelf and slope.

. Provide sediment cores from the Antarctic shelf and slope for the study ofQuaternary environmental change.

Sampling is proposed for Prydz Bay and the adjoining Mac. Robertson Shelf. Prydz Bay is an important site for studying the past behaviour of the Lambert Glacier-Amery Ice Shelf system which is the largest ice stream draining the East Antarctic Ice Sheet. The adjacent but contrasting Mac. Robertson Shelf may not have experienced the same style of glaciation during the Quatemary and has accumulated biogenic sediments in places. Bathymetry and 3.5kHz echo sounder data from Prydz Bay reveal features formed by erosion and deposition beneath the Amery Ice Shelf. The extent of post-glaciation iceberg gouging can also be inferred. On the Mac. Robertson Shelf, sediment accumulations suitable for coring can also be interpreted from the 3.5 kHz records. Fifteen gravity cores at sites selected to help interpret the Late Quaternary history of Prydz Bay and the Mac. Robertson Shelf will be collected on Voyage 7 of the 1992/93 Antarctic Division shipping season, on the R.V. Aurora Australis. An additional core from BANZARE Bank, the southern-most extension of the Kerguelen Plateau will be collected for palaeotemperature studies at the Co-operative Research Centre for Antarctic and Southern Ocean Environments. Grab samples will also be collected to elucidate modem sediment types in Prydz Bay and the Mac. Robertson Shelf.

Tags: AQ, Earth Sciences, GA Publication, Published_External, Record, marine, marine survey
Organization: Australian Ocean Data Network