AndreaBozzo/ceres-open-data-index huggingface dataset:
Australia's Maritime Jurisdiction around the State of Tasmania

Map showing Australia's Maritime Jurisdiction around the State of Tasmania, including Macquarie Island.  Based on Mercator Projection.
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, treaties and various maritime zones.  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.
A0 sized portrait format .pdf downloadable from the web.

Tags: AU-TAS, Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, continental shelf, marine, marine jurisdiction
Organization: Australian Ocean Data Network
Geochemical characteristics of Palaeozoic petroleum systems in Northwestern Australia

Isotopic and biomarker analyses carried out on Cambrian to Permian oils and source rocks in the Arafura, Bonaparte (Petrel Sub-basin) and Canning Basins have been used to geochemically characterise five distinct petroleum systems within the Larapintine and Gondwanan Petroleum Supersystems. The Larapintine 1 Petroleum System is characterised by isotopically light, free hydrocarbons in the Arafura Basin (δ13Csat = -32 ‰ Arafura-1) which have been correlated to kerogens of similar isotopic signature within the Middle Cambrian Jigaimara Formation. The richness and maturity of these source rocks indicate that an effective Larapintine 1 Petroleum System may exist in the northern parts of the Arafura Basin. Larapintine 2 oils, with Gloeocapsomorpha prisca-type signatures, are found on the Barbwire-Dampier Terraces and Admiral Bay Fault Zone in the Canning Basin. These oils can be correlated to source rocks in the Early Ordovician Goldwyer Formation on the Barbwire Terrace and the Bongabinni Formation in the Admiral Bay Fault Zone by their diagnostic odd-carbon-number preference in the C15–C19 n-alkanes. Larapintine 3 oils are derived from Late Devonian marine carbonates in the Canning Basin and Petrel Sub-basin and have a diagnostic biomarker signature which includes a predominance of steranes relative to diasteranes and abundant gammacerane and 30-norhopanes, similar to those observed in the Late Devonian Gogo and Pillara Formations. Larapintine 4 oils are derived from Early Carboniferous marine, clay-rich mudstones in both the Petrel Sub-basin and Canning Basin. They are isotopically light (mean δ13Csat = -28 ‰) and have a unique terpane signature which has been identified within the Milligans Formation. Gondwanan 1 Petroleum System hydrocarbons, represented here by the Petrel-4 condensate, have a heavy isotopic signature (δ13Csat = -24 ‰) which, coupled with an abundance of the diasterane and diahopane biomarkers, indicates derivation from Permian deltaic source facies. Recognition of the diagnostic geochemical components of each Palaeozoic petroleum system has led to the identification of Permian-like isotopic signatures in some hydrocarbon accumulations in the Timor Sea that were previously attributed to Mesozoic sources.

Citaton: Edwards D, Summons R, Kennard J, Nicoll R, Bradshaw J, Bradshaw M, Foster C, O'Brien G, Zumberge J. (1997) GEOCHEMICAL CHARACTERISTICS OF PALAEOZOIC PETROLEUM SYSTEMS IN NORTHWESTERN AUSTRALIA. The APPEA Journal 37, 351–379

Tags: Arafura Basin, Bonaparte Basin, Canning Basin, EARTH SCIENCES, Published_External, Timor Sea, biomarkers, isotopes, petroleum systems
Organization: Australian Ocean Data Network
Tsunami sources, hazards, risk and uncertainties associated with the Tonga-Kermadec Subduction Zone

In November, 2018 a workshop of experts sponsored by UNESCO’s Intergovernmental Oceanographic Commission was convened in Wellington, New Zealand. The meeting was organized by Working Group (WG) 1 of the Pacific Tsunami Warning System (PTWS). The meeting brought together fourteen experts from various disciplines and four different countries (New Zealand, Australia, USA and French Polynesia) and four observers from Pacific Island countries (Tonga, Fiji), with the objective of understanding the tsunami hazard posed by the Tonga-Kermadec trench, evaluating the current state of seismic and tsunami instrumentation in the region and assessing the level of readiness of at-risk populations. The meeting took place in the “Beehive” Annex to New Zealand’s Parliament building nearby the offices of the Ministry of Civil Defence and Emergency Management. The meeting was co-chaired by Mrs. Sarah-Jayne McCurrach (New Zealand) from the Ministry of Civil Defence and Emergency Management and Dr. Diego Arcas (USA) from NOAA’s Pacific Marine Environmental Laboratory.

As one of the meeting objectives, the experts used their state-of-the-science knowledge of local tectonics to identify some of the potential, worst-case seismic scenarios for the Tonga-Kermadec trench. These scenarios were ranked as low, medium and high probability events by the same experts. While other non-seismic tsunamigenic scenarios were acknowledged, the level of uncertainty in the region, associated with the lack of instrumentation prevented the experts from identifying worse case scenarios for non-seismic sources. The present report synthesizes some of the findings of, and presents the seismic sources identified by the experts to pose the largest tsunami risk to nearby coastlines. In addition, workshop participants discussed existing gaps in scientific knowledge of local tectonics, including seismic and tsunami instrumentation of the trench and current level of tsunami readiness for at-risk populations, including real-time tsunami warnings. The results and conclusions of the meeting are presented in this report and some recommendations are summarized in the final section.

Tags: EARTH SCIENCES, Earth Science, Earth Science | Human Dimensions | Natural Hazards | Tsunamis, Earth Science | Oceans | Ocean Waves | Tsunamis, Earth Science | Solid Earth | Tectonics | Earthquakes, Earthquakes, Hazard Response, Human Dimensions, Natural Hazards, Ocean Waves, Oceans, Published_External, Solid Earth, Tectonics, Tonga, Tsunamis
Organization: Australian Ocean Data Network
Special Issue in Honour of the Contribution of Michael Collins to Sediment Dynamics - Introduction

A symposium was held at the University of Wales, Swansea in July 2007 to honour the career and achievements of Professor Michael Collins. The symposium was organised by Michael's former postgraduate students as a tribute to his contributions over the past 30 years as a scientist, teacher, mentor and friend. About 30 of the 50+ Ph.D. and M.Sc. students that Michael has supervised over the years were fortunate to attend the symposium, which offered the opportunity for all of us to learn about the many different subjects and projects that Michael supervised and to renew our friendships with the Collins family, as well as the extended, academic Collins 'family'.

Tags: Earth Sciences, External Publication, Published_External, Scientific Journal Paper, marine, sedimentology
Organization: Australian Ocean Data Network
Aquatic Substrate Library - Adelaide Coastal Waters 2003

Record for source data hosted in the National Spectral Database (NSD) Aquatic Library

Citation:
Blackburn, D. T, and Dekker, A. G. (2007). “Remote sensing study of marine and coastal features and interpretation of changes in relation to natural and anthropogenic processes. Final Technical Report”. ACWS Technical Report No.6 prepared for the Adelaide Coastal Waters Study Steering Committee, July 2007 David Blackburn Environmental Pty Ltd and CSIRO Land and Water.

For further information and instructions to access the database go to the following URL:
https://cmi.ga.gov.au/data-products/dea/643/australian-national-spectral-database

Tags: Aquatic Substrate Library, Australian National Spectral Database (NSD), Australian spectral data, EARTH SCIENCES, End-member studies, Field spectroscopy, HVC_144490, NSD Source Dataset, Published_External, Remote sensing
Organization: Australian Ocean Data Network
Geochemical characteristics of hydrocarbon families and petroleum systems, Bonaparte Basin

The Vulcan Sub-basin has been actively explored for over twenty years, with oil production from the Jabiru and Challis-Cassini fields, and the depleted Skua Field, all of which were sourced by the Upper Jurassic Lower Vulcan Formation within the Swan Graben. The need to discover other oil-prone petroleum systems led to this study focussing on oils that have a different composition to those of the aforementioned oils. Geochemical analyses (bulk and compound-specific isotopes, GC and GC-MS of saturated and aromatic hydrocarbons) have characterised the Vulcan Sub-basin oils and condensates into three families (Fig 1); a marine oil family (with some terrigenous influence) comprising Jabiru, Challis, Skua, Talbot and Tenacious; a terrestrially-influenced oil family comprising Maret, Montara, Padthaway and Bilyara which have more varied geochemistry; and, a family of condensates from Tahbilk, Swan and Eclipse. The composition of these condensates is more reflective of reservoir alteration effects (such as leakage and gas flushing) than the type of organic matter in their source rocks. The terrestrially-influenced oil family is located in the southernmost part of the Vulcan Sub-basin and in the northern Browse Basin, most probably having being source from the Lower-Middle Jurassic Plover Formation.  The Plover Formation contains liquid-prone source rocks within the Skua Trough, albeit immature for hydrocarbon generation. Similar source rocks are believed to occur beneath the Swan and Paqualin grabens since oils with mixed composition are found at Puffin, Pituri and Oliver.

Tags: AU-NT, Conference Paper, Earth Sciences, External Publication, Published_External, organic geochemistry, petroleum exploration, petroleum geology
Organization: Australian Ocean Data Network
eReefs GBR4 Hydrodynamics v4.0

Results from version 4.0 of the 4km-resolution regional-scale hydrodynamic model of the Great Barrier Reef (GBR4). This model is forced with:



Surface Atmospheric Data: Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia, using Data Assimilation of Quality Control observations (BARRA);

Ocean Boundaries: CSIRO Bluelink Reanalysis using Data Assimilation of Quality Control observations (BRAN2020) model results;

Tide: global TPXO tide model;

River boundaries: measured stream flow and temperature data for 64 rivers from a combination of the Bureau of Meteorology Grid 2 Grid catchment model (G2Gv3) and the QLD DES Source catchment model.


This model configuration and associated results dataset may be referred to as "GBR4_H4p0_ABARRAr2_OBRAN2020_FG2Gv3_Dhnd" according to the eReefs simulation naming protocol. 

The model ran in hindcast mode and is complete. It succeeds the GBR4_H2p0 model as the best available eReefs hydrodynamic model results for its timespan.

Organization: Australian Ocean Data Network
New Exploration Opportunities in the Offshore Northern Perth Basin

Release Area W11-18 is a very large block over the offshore northern Perth Basin, covering parts of the Abrolhos, Houtman and Vlaming sub-basins and the Beagle and Turtle Dove ridges. Geoscience Australia (GA) has assessed the petroleum prospectivity of this area as part of the Australian Government's Offshore Energy Security Program. This assessment includes the first published synthesis of data from fourteen new field wildcat wells drilled in this part of the basin since the Cliff Head-1 discovery (2001), and the interpretation of new regional 2D seismic data acquired during GA survey 310 (2008-2009). A refined tectono-stratigraphic model for the offshore basin provides insights into basin evolution and prospectivity. 

Oil has been produced since 2006 from the Cliff Head oil field in WA-31-L, which is directly adjacent to Release Area W11-18. Three petroleum discoveries are included within the Release Area, with oil and gas in Dunsborough-1, and gas in Frankland-1 and Perseverance-1. These accumulations are reservoired in Permian sandstones and have primarily been sourced from the Hovea Member of the Kockatea Shale, which has also sourced the majority of producing oil and gas fields of the onshore Perth Basin. 

New seismic data show Permo-Triassic strata that are stratigraphic equivalents of the productive onshore and nearshore Perth Basin petroleum system, also occur within Permian half-graben in the outer Abrolhos and Houtman sub-basins. Source rock, oil stain and fluid inclusion sampling from this interval suggest that the proven onshore-nearshore petroleum system is also effective and widespread in the offshore. There is also evidence for an active Jurassic petroleum system within the Release Area. The Release Area offers a range of plays in a variety of water depths, predominantly less than 200 m, and is highly prospective for oil and gas.

Tags: Earth Sciences, GA Publication, Published_External, Report, marine, petroleum potential
Organization: Australian Ocean Data Network
Molecular Hydrogen from Organic Sources in Geological Systems

We have recently shown that molecular hydrogen generation from organic matter occurs at high maturity levels (vitrinite reflectance 3–5%) in Lower Cretaceous shales of the Songliao Basin. To evaluate and extend these implications to a wider range of source rock types and organofacies, we report on two Paleozoic maturity suites from Australia, namely the Permian Patchawarra Formation (fluviodeltaic; Type-III; Cooper Basin) and the middle Cambrian Arthur Creek Formation (marine; Type-II; Georgina Basin), and additional mature marine source rocks from Europe and the USA.

It can be inferred from high resolution mass spectrometry that rapid growth of aromatic ring systems is the major pathway for the formation of thermogenic molecular hydrogen from all organic matter types. Extensive open system pyrolysis experiments indicate that the main generation pulse occurs in the vitrinite reflectance range 3.5–5.0%. Kinetic parameters were constructed by subtracting the hydrogen associated with hydrocarbon formation from total hydrogen in the open-system experiments via adjustment factors defined by the relative yields of CH4 and H2. A cumulative H2 potential of 20 mg/g TOC is found with maximum rates of generation that are sufficient for feeding the deep biosphere. Back of the envelope calculations indicate ∼3.5E+10 tonnes of in-place accessible H2 globally, which is an order of magnitude lower than in-place shale gas resource estimates. Regionally, inferred here for the Patchawarra Formation in the Nappamerri Trough (Cooper Basin), yields per unit rock volume resemble those of economic shale gas in the Barnett Shale, Fort Worth Basin, USA.

Organic particles are, at the SEM-scale (&gt;30 nm), barren of secondary porosity in the case of terrigenous samples at all maturity stages, but show sponge-like porosity in the investigated marine source rocks exhibiting vitrinite reflectance &gt;∼2.0%. Presence of such meso- and macropores is crucial for H2 storage in marine shales, as microporosity (&lt;2 nm) yielding sorptive storage space for H2, is usually much higher in mature terrigenous kerogens.

Citation: Nicolaj Mahlstedt, Brian Horsfield, Philipp Weniger, David Misch, Xiangyun Shi, Mareike Noah, Christopher Boreham, Molecular hydrogen from organic sources in geological systems, Journal of Natural Gas Science and Engineering, Volume 105, 2022, 104704, ISSN 1875-5100, 
https://doi.org/10.1016/j.jngse.2022.104704.

Tags: Arthur Creek formation, EARTH SCIENCES, FT-ICR-MS, BIB-SEM, GEOCHEMISTRY, Patchawarra formation, Published_External, biogenic, geologic, kinetic modelling, pyrolysis, resource estimation, thermogenic hydrogen
Organization: Australian Ocean Data Network
One Tree Island Air Temperature 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
Outer Darwin Harbour Marine Survey 2015: High resolution backscatter grid

This resource contains multibeam sonar backscatter data for Outer Darwin Harbour collected by Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS) and the Northern Territory Government (Department of Land Resource Management) during the period from 28 May and 23 June 2015 on the RV Solander (survey SOL6187/GA0351). This project was made possible through offset funds provided by INPEX-led Ichthys LNG Project to Northern Territory Government Department of Land Resource Management, and co-investment from Geoscience Australia and Australian Institute of Marine Science. The intent of this four year (2014-2018) program is to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline data that enable the creation of thematic habitat maps that underpin marine resource management decisions. The specific objectives of the survey were to:





Obtain high resolution geophysical (bathymetry) data for outer Darwin Harbour, including Shoal Bay;




Characterise substrates (acoustic backscatter properties, grainsize, sediment chemistry) for outer Darwin Harbour, including Shoal Bay; and




Collect tidal data for the survey area. Data acquired during the survey included: multibeam sonar bathymetry and acoustic backscatter; physical samples of seabed sediments, underwater photography and video of grab sample locations and oceanographic information including tidal data and sound velocity profiles. This dataset comprises multibeam backscatter data.



A detailed account of the survey is provided in:

Siwabessy, P.J.W., Smit, N., Atkinson, I., Dando, N., Harries, S., Howard, F.J.F., Li, J., Nicholas, W.A., Potter, A., Radke, L.C., Tran, M., Williams, D. and Whiteway, T., 2015. Outer Darwin Harbour Marine Survey 2015: GA0351/SOL6187 Post-survey report. Record 2016/008. Geoscience Australia, Canberra. http://dx.doi.org/10.11636/Record.2016.008

Tags: NT, Published_External, backscatter, coastal waters, marine, multibeam, sedimentology
Organization: Australian Ocean Data Network
North Pilbara National Geoscience Mapping Accord project (1995-2000) - Scientific highlights

This paper describes the highlights of AGSO's work in the North Pilbara Project, a joint AGSO-Western Australia Geological Survey (GSWA) effort conducted under the National Geoscience Mapping Accord (NGMA) between 1995 and 2000. One of the principal drivers for AGSO's research in the Pilbara was the possible inapplicability of exploration models and genetic interpretations of Archaean mineral deposits because these models were commonly based upon late Archaean examples. One of our goals was to document the differences between the late Archaean and the early-mid Archaean mineral systems, and to develop regional thematic synthesis datasets so that more robust models could be developed to encompass the entire Archaean era. These datasets, together with our research into new exploration tools, have, and continue to assist exploration in the Pilbara. Our results also have applications to other terranes.

Tags: AU-WA, Earth Sciences, GA Publication, Published_External, Research Newslttr Paper, economic geology, marine
Organization: Australian Ocean Data Network
Glacially grooved surfaces in the Grant Group, Grant Range, Canning Basin and the extent of Late Palaeozoic Pilbara ice sheets

Grooved surfaces in Late Palaeozoic Grant Group rocks in the central Grant Range were cut by glacial ice.  The orientation of the grooves and small step-like sedimentary structures on the surfaces indicate ice motion from the south-southeast. Pebbles of banded iron formation in marine diamictites associated with the surfaces suggest that the ice originated in the Pilbara Block and extended 400 km into the Canning Basin. The geometry of facies associated with the grooves indicates that they were cut at or near the grounding line of an ice shelf in a marine embayment occupying the Fitzroy Trough.  These surfaces confirm the existence of large continental ice sheets in Western Australia during the Late Palaeozoic g laciation .

Tags: Earth Sciences, GA Publication, Journal, Published_External, WA
Organization: Australian Ocean Data Network
AUV Imagery and Environmental Data from Gippsland Basin (GA350 - 'Before' survey)

This dataset is part of the Gippsland Marine Environmental Monitoring (GMEM) project. The GMEM was developed in response to stakeholder concerns from the fisheries industry about a Geoscience Australia seismic survey in the Gippsland Basin (GA352 in April 2015), in addition to a broader need to acquire baseline data to be used to quantify impacts of seismic operations on marine organisms. A component of this study was to acquire images of the seafloor before and after the seismic survey for analysis of potential impacts of seismic operations on scallops.

This dataset contains information collected from the AUV-Gavia on survey GA-350 conducted 27 March  3 April 2015. The Gavia is an AUV operated by the Australian Maritime College and includes a single camera and a range of environmental sensors. In addition, Go-Pro cameras were mounted on the AUV's exterior to provide continuous video of the seafloor. The Gavia returned usable still images at 9 sites. This dataset contains the following data types: 1) Geotiffs acquired from the AUV nose cone camera with associated broadcale assessment of image quality on each transect, 2) Go-Pro videos acquired from external AUV mount, 3) optical backscatter, 4) ADCP data, 5) interferometric bathymetry, 6) associated shapefiles and location maps. For each data type, a Word file provides additional data about the folder structure, file types, and post-processing if applicable.

Tags: Data Package, Earth Sciences, HVC_144640, Published_External, marine
Organization: Australian Ocean Data Network