AndreaBozzo/ceres-open-data-index huggingface dataset:
Sediment Mobility due to currents and waves in the Torres Strait - Gulf of Papua region

The MECO hydrodynamic model was adapted for the Torres Strait - Gulf of Papua region at 0.051 resolution. Validation of the hydrodynamic model was carried out against observed current meter data and calculated tidal sea levels. Dispersal pathways of sediments derived from the Fly River, and from a resuspension event along the northern Great Barrier Reef were investigated using an Eulerian approach. Sediment input into Torres Strait is found to be greater during the Trade season by approximately 10%. Wave data were also obtained, and together with hydrodynamic model output, sediment mobility due to currents, waves and wave-current interactions was considered for both the Trade and Monsoon seasons. Sediment mobility in the Gulf of Papua is dominated by wave motion, whereas Torres Strait is a mixed environment of waves and tidal currents.

Tags: Earth Sciences, External Publication, PG, Published_External, Scientific Journal Paper, marine
Organization: Australian Ocean Data Network
SI 1029 Hay Point to Hydrographers Passage, QLD (HIPP) Bathymetry Acquisition (20220014S)

The Hay Point to Hydrographers Passage Bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Sea Ranger and MV Brynda during the period 13 August- 09  November 2022. This is a contracted survey conducted for the Australian Hydrographic Office by EGS as part of the Hydroscheme Industry Partnership Program (HIPP). 

The survey area encompases Hay Point to Hydrographers Passage in Queensland. Bathymetry data was acquired using a Kongsberg EM2040D and Kongsberg EM 2040C systems 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, Bathymetry, Bathymetry/Seafloor Topography, EARTH SCIENCES, Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry, HVC-144641, Oceans, Published_External, bathymetric grids, bathymetry, multibeam
Organization: Australian Ocean Data Network
Food by Geoscience Design! The geoscience of food, from tectonic plates to dinner plates

Our planet provides everything we need for our lives, including the food we eat.  As the human population increases and expectations for lifestyle quality increases, so too do the pressures placed on our planet to provide that food.  We therefore need to be better at producing food and understanding how that links to our scientific understanding of our planet.
For National Science Week 2021, the Geoscience Australia public seminar (co-sponsored by the ACT Division of the Geological Society of Australia and the ACT Branch of the Australian Marine Sciences Association) will present four speakers to demonstrate how geoscience is integral to the provision of our food.
Steve Hill – The Long View:  Across many disciplines of geoscience and different spatial scales, geology, soils and even plate tectonics influence our food (and wine).
Andrew Carroll – Finding Important Seabed Habitat (FISH):  Did you know that seabed mapping data directly contributes $9 billion to the Australian economy each year and employs over 56,000 people?  For the fishing and aquaculture sectors, seabed mapping is valued at $3 billion.  However, only one quarter of Australia’s seabed is mapped!  Learn how GA is addressing this challenge to support the rapid growth of Australia's Blue Economy.   

Claire Krause – Food at Scale:  In a country as big and dynamic as Australia, producing food is no small task.  Satellite imagery is being leveraged to map, monitor and understand Australia’s food production regions and to identify and manage challenges in the sector. 

Anna Riddell – From Paddock to Plate with Positioning:  Have you ever wondered how your food arrives on your plate and the role that navigation satellites play?  Positioning is becoming ubiquitous in everyday life and even has a part in enabling our food to be grown, harvested and transported.

Tags: EARTH SCIENCES, Published_External, Wednesday Seminar, food, soils
Organization: Australian Ocean Data Network
Australia's Maritime Jurisdiction off Northern Australia 2014

Map showing Australia's Maritime Jurisdiction off Northern Australia. Updated in June 2014 from "Australia's Maritime Jurisdiction off Northern Australia" (GeoCat 70183) to conform with "Australian Maritime Boundaries 2014" data by Geoscience Australia. This includes areas contiguous to the north of the continent and as far west as Christmas Island, but excludes areas around Cocos (Keeling) Islands and areas west of Christmas Island.
One of the 27 constituent maps of the "Australia's Maritime Jurisdiction Map Series" (GeoCat 71789).  Depicting Australia's continental shelf as proclaimed in the "Seas and Submerged Lands (Limits of Continental Shelf) Proclamation 2012" established under the "Seas and Submerged Lands Act 1973". Background bathymetry image is derived from a combination of the 2009 9 arc second bathymetry and topographic grid by Geoscience Australia and a grid by W.H.F. Smith and D.T. Sandwell, 1997. Background land imagery derived from Blue Marble, NASA's Earth Observatory.
2800mm x 1050mm (for 42" plotter) sized .pdf downloadable from the web.

Tags: Administrative Boundaries, Administrative Boundary, Continental Shelf, Earth Sciences, Maritime Boundaries, Published_External, Thematic Map, bathymetry, marine
Organization: Australian Ocean Data Network
High-energy reef and terrigenous sedimentation, Boulder Reef, Great Barrier Reef

Sediment and water flux were monitored at Boulder Reef, in the Northern Great Barrier Reef, before, during, and after the passage of Tropical Cyclone Dominic. Rainfall at Cooktown as a result of Dominic amounted to 430 mm in 3 days, this effecting a record discharge in the Endeavour River of nearly 50 000 megalitres/day. At Boulder Reef, conditions prior to Dominic of 10-20 knot winds effected average water velocities of 11 cm/s across the reef, which generated a substantial reef-derived sediment load with particulate organic material up to ten times greater than particulate inorganic carbon by weight. During the high-energy event, winds in excess of 50 knots generated water movements of up to 40 cm/s and sediment loads two to five times greater than before the event. In addition, the sediment contained a substantial terrestrial component (illite and kaolinite), probably originating from the Endeavour River. Three days after the passage of Dominic, water velocities across the reef were still rapid (up to 60 cm/s) and sediment loads still high, although now only reef-derived. However, further monitoring indicated a second pulse of terrigenous material reaching Boulder Reef four days after Dominic. Large amounts of reef-derived carbonate and organic material are lost daily from the system to the inter-reef areas. Conversely, large quantities of terrestrially derived clay are added to the reef every five years or so, in amounts within the range 135- 228 tonnes: this has probably occurred at this periodicity for the past 5000 years. Cores through the Holocene section confirmed that clay deposition has occurred throughout its growth.

Tags: Earth Sciences, GA Publication, Journal, Published_External, QLD, marine
Organization: Australian Ocean Data Network
Potential field and bathymetry grids of Australia's margins

The Australian Geological Survey Organistaion, in co-operation with Desmond Fitzgerald and Associates and the Australian Hydrographic Service, has produced a set of digital bathymetry, gravity and magnetic grids for Australia's margin, with resolutions of 250-1000m. They represent a major upgrade of marine ship-track potential field and bathymetry data in Australian waters for the purpose of developing fundamental products for geological interpretation. In integrating data from many sources, levelling techniques have been developed to correct crossover and other errors, and the ship-track data have been merged with satellite and high-resolution onshore sources.

Tags: AU-EEZ, Abstract, Earth Sciences, External Publication, Published_External, bathymetry, gravity, magnetics, marine
Organization: Australian Ocean Data Network
Fast Repetition Rate Fluorometry (FRRF) data collected on the RV L'Astrolabe from 22/01/2005 to 27/01/2005 (Dumont d'Urville - Hobart)

These data were collected on the RV L'Astrolabe (platform code: FHZI) from 22/01/2005 to 27/01/2005 on a trip from Dumont D'Urville to Hobart.

Maximum photochemical efficiency of photosystem II (PSII), also called maximum quantum yield of PSII (Fv/Fm), has become one of the most widely utilized fluorescence parameters in phytoplankton research. It represents the potential photochemical efficiency, which is the probability that the light energy captured by the photosynthetic apparatus is being utilized as photochemistry. Fv/Fm has been shown to have an instant response to variations in physical and chemical properties and is interpreted as a diagnostic of the overall health or competence of phytoplankton. Together with the absorption cross section area of PSII and chlorophyll concentration, it can be used to measure primary production (Cheah et al. 2011, Deep Sea Research).

Seawater from 3 m depth was supplied continuously from the ship’s clean seawater line. FRR fluorescence yields were measured continuously at 1 minute intervals in dark-adapted state (! 15 minutes dark-adaptation) using a flash sequence consisting of a series of 100 subsaturation flashlets (1.1 μs flash duration and 2.8 μs interflash period) and a series of 20 relaxation flashlets (1.1 μs flash duration and 51.6 μs interflash period).

Tags: Continents | Antarctica, Countries | Australia, Fast Repetition Rate Fluorometer (FRRF), Global/Oceans | Southern Ocean, Instrument's photomultiplier electronic sensitivity (1-256), Latitude, Longitude, Maximum quantum yield (Fv/Fm), Minimum fluorescence in the light chamber of the FRRF (also used as a proxy for biomass), Oceans | Ocean Temperature | Sea Surface Temperature, Oceans | Salinity/density | Salinity, Photosynthesis, connectivity between PSII reaction centres under actinic light, functional absorption cross section of PSII (measure of the proportion of light harvested for photoc, maximum fluorescence in the light chamber of the FRRF, maximum quantum yield of photosystem II ( (FmL - FoL) / FmL), primary production, time constant of electron transport from PSII to PSI, variable fluorescence (FmL - FoL)
Organization: Australian Ocean Data Network
Surat Basin hydrogeological inventory

This Surat Basin dataset contains descriptive attribute information for the areas bounded by the relevant spatial groundwater feature in the associated Hydrogeology Index map. Descriptive topics are grouped into the following themes: Location and administration; Demographics; Physical geography; Surface water; Geology; Hydrogeology; Groundwater; Groundwater management and use; Environment; Land use and industry types; and Scientific stimulus.

The Surat Basin is a sedimentary basin with approximately 2500 m of clastic fluvial, estuarine, coastal plain, and shallow marine sedimentary rocks, including sandstone, siltstone, mudstone, and coal. Deposition occurred over six cycles from the Early Jurassic to the Cretaceous, influenced by eustatic sea-level changes. Each cycle lasted 10 to 20 million years, ending around the mid-Cretaceous.

Bounded by the Auburn Arch to the northeast and the New England Orogen to the southeast, it connects to the Clarence-Moreton Basin through the Kumbarilla Ridge. The Central Fold Belt forms its southern edge, while Cenozoic uplift caused erosion in the north.

The basin's architecture is influenced by pre-existing faults and folds in the underlying Bowen Basin and the nature of the basement rocks from underlying orogenic complexes. Notable features include the north-trending Mimosa Syncline and Boomi Trough, overlying the deeper Taroom Trough of the Bowen Basin and extending southwards.

The Surat Basin overlies older Permian to Triassic sedimentary basins like the Bowen and Gunnedah Basins, unconformably resting on various older basement rock terranes, such as the Lachlan Orogen, New England Orogen, and Thomson Orogen. Several Palaeozoic basement highs mark its boundaries, including the Eulo-Nebine Ridge in the west and the Kumbarilla Ridge in the east.

Paleogene to Neogene sediments, like those from the Glendower Formation, cover parts of the Surat Basin. Remnant pediments and Cenozoic palaeovalleys incised into the basin have added complexity to its geological history and may influence aquifer connections.

Overall, the Surat Basin's geological history is characterized by millions of years of sedimentation, tectonic activity, and erosion, contributing to its geological diversity and economic significance as a source of natural resources, including coal and natural gas.

Tags: Basin Analysis, EARTH SCIENCES, ECOLOGY, ENVIRONMENTAL SCIENCES, Environmental Management, Exploring for the Future, GEOLOGY, Groundwater, Hydrogeology, Land Use and Environmental Planning, National Groundwater Sytems, National Hydrogeological Inventory, PHYSICAL GEOGRAPHY AND ENVIRONMENTAL GEOSCIENCE, Published_External, Sedimentology, Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy)
Organization: Australian Ocean Data Network
Geology of the Canberra 1:100 000 Sheet area, New South Wales and Australian Capital Territory

The Canberra 1: 100 000 Geological Sheet covers about 2500 km2 of hilly, upland terrain in the Australian Capital Territory and southeastern New South Wales. The bedrock comprises Ordovician to Silurian sediments and acid volcanics which have been invaded by several generations of Silur&lt;rDevonian acid and basic intrusions. Crustal evolution was from an oceanic environment characterised by turbidites in the Ordovician to a shallow-marine shelf and emerging terrestrial conditions in the Silurian represented by sediments and widespread pyroclastic flows. The sequence has been folded, faulted, and weakly metamorphosed by a series of mid Palaeozoic earth movements which have given a strong meridional trend to the geological structure. The region has been stable since the Carboniferous, apart from minor fault movements and intracratonic sedimentation associated with Cainozoic epeirogenic uplift.

Tags: AU-ACT, Bulletin, Earth Sciences, GA Publication, Published_External, geology
Organization: Australian Ocean Data Network
A two-part seabed geomorphology classification scheme; Part 1: Morphology features glossary (Version 2)

This brief report updates the ‘Two-part Seabed Geomorphology classification scheme’ of Dove et al. (2016) and presents a new glossary (Part 1) of Seabed Morphology features. This Morphology glossary is intended to provide marine scientists with an accurate and robust way to characterise the seabed. Each glossary entry includes a feature definition and a representative schematic diagram to support clear and consistent classification. Feature terms and definitions are primarily drawn from the IHO guide for undersea feature names, which are herein modified and augmented with additional terms to ensure the final feature catalogue and glossary encompasses the diversity of morphologies observed at the seabed, while also minimising duplication and/or ambiguity. This updated classification system and new glossary are the result of a collaboration between marine geoscientists from marine mapping programmes/networks in Norway (MAREANO), Ireland (INFOMAR), UK (MAREMAP), and Australia (Geoscience Australia) (MIM-GA). A subsequent report will present the (Part 2) Geomorphology feature glossary.

Citation: Dove, Dayton, Nanson, Rachel, Bjarnadóttir, Lilja R., Guinan, Janine, Gafeira, Joana, Post, Alix, Dolan, Margaret F.J., Stewart, Heather, Arosio, Riccardo, &amp; Scott, Gill. (2020). A two-part Seabed Geomorphology classification scheme (v.2); Part 1: Morphology Features Glossary. 
Zenodo. https://doi.org/10.5281/zenodo.4071939

Tags: EARTH SCIENCES, ENVIRONMENTAL SCIENCES, Published_External, mapping, marine geomorphology
Organization: Australian Ocean Data Network
Diagenesis of Jurassic and Lower Cretaceous sandstones of the Eromanga Basin in New South Wales

The Jurassic and Lower Cretaceous sandstones of the Eromanga Basin in New South Wales can be divided into quartzose and volcanolithic petrofacies. The latter comprises sandstones of the Cadna-owie and Wallumbilla Formations which are predominantly volcanic-orogen-sourced lacustrine-to-paralic and shallow-marine deposits; the quartzose petrofacies comprises the craton-sourced fluvial Hooray Sandstone, the correlative fluvial and lacustrine Mooga Formation, and subordinate basal and other intercalated phases of the overlying Cadna-owie Formation. The diagenetic overprints in the sandstones include physical compaction, clay infiltration, cementation, and the dissolution and replacement of labile grains. The authigenic minerals in the chemically reactive volcanolithic sandstones are, in temporal order of appearance: syndepositional-glauconie, pyrite, sporadic carbonate, smectite (including nontronite, smectite and mixed-layers mectite/chlorite), zeolite (heulandite and mordenite), and kaolinite ; and in the chemically stable quartzose sandstones, the authigenic minerals are, in order of appearance: quartz (phase I), sporadic carbonate, accessory chlorite, and quartz (phase II) and kaolinite. Cutans of mechanically infiltrated clay and/or thin authigenic chlorite grain-coatings constitute early diagenetic overprints in the quartzose sandstones of the Hooray Sandstone/ Mooga Formation and the Cadna-owie Formation, and thereby minimised subsequent reduction of the substantial primary porosity of these rocks by precluding pervasive quartz-vergrowth cementation. The present-day excellent aquifer function of these quartzose sandstones is due largely to this circumstance, perhaps augmented by a history of geochemical pore-fluid conditions that were generally unfavourable for the volumetrically large-scale precipitation of either silica or carbonate.  The volcanolithic sandstones average 35 % core porosity and 125 md permeability. Micropores constitute the predominant pore-type in these rocks and, where macropores are present, they comprise both isolated primary intergranular and secondary grain-dissolution pores, the origin of the latter likely being related to the interaction between labile sand grains and pore-fluid derived in part from intercalated organic-rich mudrocks. The quartzose sandstone has 29% (mean) core porosity and 676 md (mean) permeability; and the pore-types are mainly primary intergranular pores, and accessory intragranular grain-dissolution pores (mostly within feldspar grains). The development of the secondary-dissolution pores in the quartzose sandstone manifests the influence of meteoric (artesian) water and is a late diagenetic event. The distribution patterns of porosity- permeability of the lithic and quartzose sandstones correlate well with the respective depositional environments of these rocks as manifested by their bulk lithofacies characteristics.

Tags: Earth Sciences, GA Publication, Journal, NSW, Published_External, QLD
Organization: Australian Ocean Data Network
Australia's Maritime Jurisdiction off the Northwest Shelf

Map showing Australia's Maritime Jurisdiction off the Northwest Shelf.
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. Background land imagery derived from Blue Marble, NASA's Earth Observatory.
A0 sized .pdf downloadable from the web.

Tags: AU-WA, Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, marine, marine jurisdiction
Organization: Australian Ocean Data Network
Geomorphology, Sedimentology and Stratigraphy of Submarine Canyons on the SW Australian Slope: RV Southern Surveyor, September – October 2005

This record contains the substantive results of Geoscience Australia marine survey SS08/2005
to the SW margin of Australia. The survey was completed between 28 September and 20
October 2005 using Australia’s national facility research vessel Southern Surveyor. The survey
included scientists from Geoscience Australia, CSIRO – Marine and Atmospheric Research,
and Victoria Museum. The survey was co‐funded by Geoscience Australia and the
Department of the Environment and Heritage (now the Department of the Environment,
Water, Heritage and the Arts). The principal aims of the survey were to explore deep‐sea
habitats and processes in submarine canyons on the SW margin, and examine the geology of
the underlying Mentelle Basin as an assessment for its petroleum potential.

Tags: AU-WA, Earth Sciences, GA Publication, Published_External, Record, geomorphology, mapping, marine, resource management, seabed, sedimentology
Organization: Australian Ocean Data Network
Devonian fish remains from Billiluna, eastern Canning Basin, Western Australia

Fragmentary remains of Devonian fishes are described from the Knobby Sandstone, a thick non-marine clastic formation in the eastern Canning Basin, which is a potential petroleum reservoir in subsurface fault-bounded sequences overlain by marine carbonates.  The fauna includes a new species of the antiarch Bothriolepis, a few dermal plates of an asterolepidoid antiarch, various coarsely ornamented placoderm fragments probably belonging to a much larger antiarch, and some isolated rhipidistian teeth and scales. The fragmentary preservation  suggests a high-energy depositional environment. Associated are plant remains, including Leptophloeum australe (MCoy). All fossils are preserved as moulds in a coarse sandstone. The fauna is probably Late Devonian (Famennian) in age, but better material is required for detailed correlation with other Late Devonian vertebrate assemblages in the Canning Basin and elsewhere.

Tags: Earth Sciences, GA Publication, Journal, Published_External, WA
Organization: Australian Ocean Data Network