AndreaBozzo/ceres-open-data-index huggingface dataset:
MH370 Phase 1 150m Bathymetry datasets (GA-4421,GA-4422 & GA-4430)

On behalf of Australia, the Australian Transport Safety Bureau (ATSB) is leading search operations for missing Malaysian airlines flight MH370 in the Southern Indian Ocean. Geoscience Australia provided advice, expertise and support to the ATSB to facilitate bathymetric surveys, which were undertaken to provide a detailed map of the sea floor topography to aid navigation during the underwater search. Bathymetric data was acquired by multibeam sonar mounted on the hull of multiple vessels (GA survey reference: GA-4421, GA-4422 &amp; GA-4430). Bathymetric surveys were conducted from June 2014 to February 2017, collecting over 710,000 square kilometres of data in the search area and along transit lines (to and from the search area). This dataset allows exploration of the seafloor topography of bathymetry data at a resolution of 150 m across the search and transit areas of the Southern Indian Ocean. The dataset is overlain on a hillshade created from the 150m resolution bathymetry data. The hillshade was created with the parameters of point illumination azimuth at 45 degrees and altitude of 45 degrees.

This dataset is not to be used for navigational purposes.

Tags: AusSeabed, Earth Sciences, HVC_144641, Published_External, bathymetry, marine, marine survey
Organization: Geoscience Australia Data
Geoscience Australia Marine Data WFS

This web service contains marine geospatial data held by Geoscience Australia. It includes bathymetry and backscatter gridded data plus derived layers, bathymetry coverage information, bathmetry collection priority and planning areas, marine sediment data and other derived products. It also contains the 150 m and optimal resolution bathymetry, 5 m sidescan sonar (SSS) and synthetic aperture sonar (SAS) data collected during phase 1 and 2 marine surveys conducted by the Governments of Australia, Malaysia and the People's Republic of China for the search of Malaysian Airlines Flight MH370 in the Indian Ocean. This web service allows exploration of the seafloor topography through the compilation of multibeam sonar and other marine datasets acquired.

Tags: AusSeabed, Earth Sciences, Environmental Sciences, Geology, Geophysics, Geophysics not elsewhere classified, Indian Ocean, Oceanography, Other Earth Sciences, Physical Geography and Environmental Geoscience, Published_External, WFS, backscatter, bathymetry, geomorphology, mapping, marine, multibeam, seabed, sediments, web service
Organization: Geoscience Australia Data
Baseline biogeochemical data from Australia’s continental margin links seabed sediments to water column characteristics

Surficial marine sediments are an important source of nutrients for productivity and biodiversity yet the biogeochemistry of these sediments is poorly known in Australia. Seabed samples were collected at &gt;350 locations in Australia’s western, northern and eastern continental margins during federal government surveys (2007-2014). Parameters analysed included measures of organic matter (OM) source (δ13C, δ15N and C:N-ratios), concentration (total organic carbon (%TOC) and surface area normalised TOC (OC:SA)) and bioavailability (chlorin indices, total reactive chlorins, total oxygen uptake, total sediment metabolism (TSM), sediment oxygen demand (SOD) and SOD and TSM normalised to TOC). The aim of this study is to summarise these biogeochemical ‘baseline’ data, and make contextualised inferences about processes that govern the observed concentrations.  The OM was mainly from marine sources and OC:SA broadly reflected water column productivity (MODIS). Approximately 40% of sediments were organic-poor by global standards reflecting seawater oligotrophy; ~12% were organic-rich due to benthic production, high water column productivity and pockmark formation. OM freshness varied due to pigment degradation in water columns and dilution with refractory OM in reworked sediments. δ15N values confirmed the importance of N2 fixation to Timor Sea productivity, and point to recycling of fixed nitrogen within food chains in Western Australia.

<b>Citation:</b> Radke Lynda, Nicholas Tony, Thompson Peter A., Li Jin, Raes Eric, Carey Matthew, Atkinson Ian, Huang Zhi, Trafford Janice, Nichol Scott (2017) Baseline biogeochemical data from Australia’s continental margin links seabed sediments to water column characteristics. <i>Marine and Freshwater Research</i> <b>68</b>, 1593-1617. 
https://doi.org/10.1071/MF16219

Tags: EARTH SCIENCES, Published_External, Trichodesmium, diazotroph, marine, geochemistry, seabed, sediments, organic carbon, particulate, totol nitrogen
Organization: Geoscience Australia Data
Aeolianites in the Jurassic Jurgurra Sandstone, Canning Basin, Western Australia

During the geological mapping of the Mount Anderson Sheet area of the Canning Basin in 1976, an exposure of the Jurassic Jurgurra Sandstone about 20 km north of the type locality was examined and found to contain evidence of aeolian deposition. This note presents an environmental analysis of the section. The Jurgurra Sandstone, the lowest Jurassic unit in the Edgar Range area, was defined by Brunnschweiler (1954) as a massive, medium-grained quartz sandstone, commonly cross-bedded, and containing fossil wood and friable clay pellets. It has been considered to be a marine deposit as it contains poorly preserved marine bivalves. It has been tentatively correlated with the Wallal Sandstone (McWhae, 1961), a subsurface unit recognised during petroleum exploration, which is thought to have a paralic origin and to represent the transgressive deposits of a Jurassic marine advance. Only the upper part of the Jurgurra Sandstone is exposed. The Wallal Sandstone is 120 m thick in the Babrongan No. 1 exploration well (lat. 180Â° 23 23" S, long. 123Â° 35 37" E), which is the nearest complete section to the area considered here. It thickens to a maximum recorded thickness of 369 m in Munro No.1 well (lat. 19Â° 51 47" S, long. 122Â° 28 28" E). The exposure described occurs just south of the point at which the road to Mowla Bluff station crosses Geegully Creek (Fig. I), about 7 km north of Mowla Bluff Homestead (lat. 18Â° 32 30 S, long. 123Â° 40 55 E). It consists of clean, fluted surfaces in the floor and banks of the creek; the vertical thickness exposed averages about 5 m.

Tags: Earth Sciences, GA Publication, Journal, Published_External, WA
Organization: Geoscience Australia Data
Australia's Maritime Jurisdiction in the Coral and Tasman Seas

Map showing Australia's Maritime Jurisdiction in the Coral and Tasman Seas.
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: Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, continental shelf, marine, marine jurisdiction
Organization: Geoscience Australia Data
How Airborne Electromagnetic (AEM) Surveys Work

This animation shows how Airborne Electromagnetic Surveys Work.  It is part of a series of Field Activity Technique Engagement Animations. The target audience are the communities that are impacted by our data acquisition activities. There is no sound or voice over. The 2D animations include a simplified view of what AEM equipment looks like, what the equipment measures and how the survey works.

Tags: AEM, AusAEM, EARTH SCIENCES, EFTF - Exploring For The Future, ENVIRONMENTAL SCIENCES, GEOCHEMISTRY, Geoscience Knowledge Sharing, Published_External, air access, airborne survey, conductivity, electromagnetic survey, geophysical survey, helicopter, land access, light aircraft, marine access, resistivity, stakeholder engagement
Organization: Geoscience Australia Data
Gippsland 2D Infill 2015 Marine Seismic Survey, (GA-0352) - High Resolution Bathymetry Grids

Geoscience Australia conducted a marine seismic survey (GA-0352) over poorly defined areas of the Gippsland Basin between 5th of April to the 24th of April 2015. The aim was to acquire industry-standard precompetitive 2D seismic data, Multi-beam echo-sounder (MBES) and sub-bottom profiling (SBP) data 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 data collected during this survey will enhance sequence stratigraphic studies in the Gippsland Basin that provide constraints on the most suitable areas for storage of CO2 and help to identify potential CO2 storage reservoirs. The survey was conducted by Gardline CGG vessel MV Duke The data collected during the survey are available for free download from the Geoscience Australia website. This dataset include all the bathymetry data collected during the survey.

This dataset is not to be used for navigational purposes.

Tags: AusSeabed, Bathymetry, Data Package, EARTH SCIENCES, Exclusive Economic Zone, HVC_144641, Published_External, Vic, geological storage of CO2, marine survey, seismics
Organization: Geoscience Australia Data
Tidally Incised Valleys on Tropical Carbonate Shelves: An Example from the Northern Great Barrier Reef, Australia

The formation of incised valleys on continental shelves is generally attributed to fluvial erosion under low sea level conditions. However, there are exceptions. A multibeam sonar survey at the northern end of Australia's Great Barrier Reef, adjacent to the southern edge of the Gulf of Papua, mapped a shelf valley system up to 220 m deep that extends for more than 90 km across the continental shelf. Based on observations, we propose a new conceptual model for the formation of tidally incised shelf valleys.

Tags: AU-QLD, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, marine, marine survey
Organization: Geoscience Australia Data
Water Properties of Ashmore Reef, North-west Shelf, Australia

Ashmore Reef is a tropical marine reserve positioned at the confluence of Indian Ocean waters and the Indonesian Through Flow, has three vegetated cays all with fresh water lenses and two lagoons, separated by a calcareous algal rise.  Both lagoons have two entrances on the northern side of the reef.  The reef is subject to a 4.75 m semi-diurnal tide and on a spring tide ~7.5 km3 of water washes over the reef.  The regional, lagoonal and well water qualities in and around Ashmore Reef have been observed from 1991 with a more intensive program since 1999 to ascertain it's chemistry and possible relationships with biodiversity.   Sea surface temperatures of the surrounding oceanic water seasonally range from 25.48Â°C to 30.2Â°C and salinity from 34.51 to 34.75.  Satellite derived lagoonal temperatures range from 25.4Â°C - 34.5 Â°C with an average of 29.4 Â°C, salinity ranges from 39.6 to 31.2.  

The fresh water lens on West Island has up to 150 000 ltr/yr pumped from the well. Well water temperature varies between 28Â°C and 29Â°C, and salinity has ranged from  0.03  to 3.94 with a pH of 7.64 dissolved oxygen percentage ranged from 27% to 51 %. 

This reef is within the tropical monsoonal belt, with thunderstorms occurring on ~85 days/yr and where evaporation potential is ~1820 mm, almost twice that of annual rainfall of ~950 mm.

This article can be found in The Beagle, pp. 9-12. The Beagle is a print only journal.

Tags: Earth Sciences, External Publication, Published_External, hydrogeology, marine
Organization: Geoscience Australia Data
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: Geoscience Australia Data
Hydrodynamic modelling of coastal inundation

Modelling the effects on the built environment of natural hazards such as riverine flooding, storm surges and tsunami is critical for understanding their economic and social impact on urban communities. Geoscience Australia and the Australian National University are developing a hydrodynamic inundation modelling tool called ANUGA to help simulate the impact of these hazards.

Tags: Abstract, Earth Sciences, GA Publication, Published_External, marine, numerical modelling
Organization: Geoscience Australia Data
Phanerozoic magnetostratigraphy : a contribution to the timescales project

A critique of magnetostratigraphic coverage for the Phanerozoic is presented. Cambrian to EarlyCarboniferous constraints are sparse in the absence of dedicated magnetostratigraphic studies. The LateCarboniferous and Late Permian boundaries of the Permo-Carboniferous Reverse Superchron (PCRS)are better constrained from magnetostratigraphic studies, but limited detail is available on possiblenormal polarity subchrons in the PCRS. Triassic to Recent constraints are well-established fromdedicated magnetostratigraphic studies with adequate biostratigraphic control, and for the MiddleJurassic to Recent from calibration against marine magnetic anomalies.

Tags: Earth Sciences, GA Publication, Published_External, Record, palaeomagnetism, stratigraphy
Organization: Geoscience Australia Data
Ginan - Case Study, Australian Institute of Marine Science

FrontierSI has been engaged by Geoscience Australia (GA) to establish a series of case studies showcasing the benefits of Positioning Australia products and services through demonstrations of precise positioning capability. The Australian Institute of Marine Science (AIMS) was selected as the demonstration partner for this case study, contributing their extensive knowledge of current and future marine technologies and providing a suitably challenging environment for deployment of precise positioning solutions. This project investigates the available options for provision of precise global navigation satellite systems (GNSS) positioning at the AIMS Marine Operations Centre, and explores the suitability, benefits, and challenges of using Positioning Australia products including Ginan for this purpose.&nbsp;

Tags: Ginan, Global Navigation Satellite Systems, Navigation and position fixing, Positioning Australia, Precise Positioning, Published_External, demonstration project
Organization: Geoscience Australia Data
Innovative Visualisation for Australia's Marine Zone

Geoscience Australia collects and manages large amounts of data for Australia's marine zone, including bathymetry data and the legal boundaries of petroleum acreage release areas. Communicating this information to non-specialists can be difficult. To overcome this communication problem Geoscience Australia uses innovative visualisation techniques, including 3D flythroughs and video editing, to integrate raster and vector geospatial data into enhanced multimedia products. Geoscience Australia has used these techniques for a number of years and the resulting products are highly regarded by stakeholders interested in marine zone management and petroleum exploration. This paper examines four case studies where these innovative techniques were used to effectively communicate marine zone information with a wide audience.

Tags: 3D model, Conference Paper, Earth Sciences, GA Publication, Published_External, marine
Organization: Geoscience Australia Data
Outer Darwin Harbour Shallow Water Sediment Survey 2016: GA0356 - Post-survey report

A benthic sediment sampling survey (GA0356) to the nearshore areas of outer Darwin Harbour was undertaken in the period from 03 July to 14 September 2016. Partners involved in the survey included Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS) and the Department of Environment and Natural Resources within the Northern Territory Government (NT DENR) (formerly the Department of Land and Resource Management (DLRM)). This survey forms part of a four year (2014-2018) science program aimed at improving knowledge about the marine environments in the regions around Darwin and Bynoe Harbours through the collection and collation of baseline data that will enable the creation of thematic habitat maps to underpin marine resource management decisions.  This project is being led by the Northern Territory Government and is supported by the INPEX-led Ichthys LNG Project, in collaboration with - and co-investment from GA and AIMS. The program builds upon an NT Government project (2011-2011) which saw the collection of baseline data (multibeam echosounder data, sediment samples and video transects) from inner Darwin Harbour (Siwabessy et al. 2015).
Here we present an account of the field methods and data summaries (location maps and comprehensive metadata) for the collection of 200 seabed sediment samples designated for grain size and inorganic elemental analyses, and organic matter concentration, source and reactivity measures. Metadata is also provided for seagrass observations and hardground occurrences. The seagrass observation data will be incorporated into DENR's seagrass database. 
The baseline environmental datasets acquired during this survey will be merged with like datasets from three other surveys conducted as part of the overall project to create a set of interpolated maps of abiotic parameters with full coverage for the region. Some of the maps will be integrated into final habitat mapping products. Baseline data from the survey will also be made publically available via the Geoscience Australia website (http://www.ga.gov.au/).

Tags: Earth Sciences, Published_External, geochemistry, marine survey, seabed, sediment, sedimentology
Organization: Geoscience Australia Data
SI 1032 Furneaux Group, Bass Strait (HIPP) Bathymetry Acquisition (20220019S)

The Furneaux Group, Bass Strait&nbsp;bathymetry survey was acquired for the Australian Hydrographic Office (AHO) using Cessna 441 during the period 11 Apr 2022 – 20 Nov 2022. This was a contracted survey conducted for the Australian Hydrographic Office by Fugro Australia as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in Furneaux Group, Bass Strait. Bathymetry data was acquired using a LADS HD+ / LADS HD / RIEGL VQ-820-G, and processed using RIEGL RiProcess and CARIS HIPS and SIPS 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 SCIENCES, Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry, HVC_144641, LiDAR, Oceans, Published_External, bathymetric grids, bathymetry, multibeam
Organization: Geoscience Australia Data
Seabed imagery from GA0357 Davis survey (AAP5093)

Seabed imagery was collected at 25 sites off Davis station, East Antarctica during survey GA0357 from January to February 2017. The survey was conducted in shallow waters (&lt;300 m depth) on the RV Howard Burton as part of Australian Antarctic Program (AAP) Project 5093. The imagery was collected using a downward-facing video camera system and Keldon light which were mounted on a sediment grab or sound velocity profiler (SVP) and lowered using a small winch. The camera was lowered to approx. 0.5-1 m from the seabed for 5 minutes. The video data is unclipped and includes descent and ascent in the water column. Upon retrieval, the data was downloaded and named by station and sequential camera deployment number. The GPS position of the vessel was recorded and the timestamp of the video footage will be used to determine the location of the camera.

The imagery is available on the NCI:
https://thredds.nci.org.au/thredds/catalog/fk1/GA0357_Davis_AAP5093/catalog.html
with the following file structure:
Australian Marine Video and Imagery Data/GA0357_Davis_AAP5093/FILENAME.avi

The FILENAME corresponds to details of each deployment, e.g. GA0357_CAM004_STN025_GR001 is the survey name (GA0357), camera deployment number (CAM004), station number (STN025) and associated grab or SVP deployment number (GR001).

Metadata is available in the Excel file: GA0357_Davis_AAP5093_CAM_Log_FINAL.xlsx
A post-survey report is in progress and will be available on eCat when complete.

We thank the AAD/GA/Navy survey team for their assistance in acquiring the data, AAD support staff at Davis station for their support deploying the RV Howard Burton, and AAP Project 5093 Chief Investigator Ursula Harris for pre and post-survey coordination. This dataset is published with the permission of the CEO, Geoscience Australia.

Tags: Antarctica, EARTH SCIENCES, HVC_144640, Published_External, benthic communities, marine, seabed
Organization: Geoscience Australia Data
Seabed Environments and shallow sub-surface geology of the Vlaming Sub-basin, offshore Perth Basin: Summary results from marine survey GA0334

As part of the Australian Government's National CO2 Infrastructure Plan (NCIP), Geoscience Australia has undertaken integrated assessments of selected offshore sedimentary basins for their CO2 storage potential. In March and April 2012, Geoscience Australia completed a seabed survey (GA0334) over two targeted areas (Area 1 and Area 2) of the Vlaming Sub-basin (Figure 1 1), as part of a larger study investigating the suitability of the Vlaming Sub-basin for geological storage of CO2. 
This document summarises the results and interpretation of seabed and shallow geological (to 30 m below the seabed) data acquired during survey GA0334 in the Vlaming Sub-basin. These data and their interpretations are being used to support the investigation of the Vlaming Sub-basin for CO2 storage potential.

Tags: AU-WA, GA Publication, Physical Geography and Environmental Geoscience, Published_External, Record, bathymetry, continental shelf, environmental, geological storage of CO2, marine, sedimentary basins
Organization: Geoscience Australia Data