AndreaBozzo/ceres-open-data-index huggingface dataset:
EOMAP_20220329.0835 Christmas Island Marine Park Satellite-Derived Bathymetry Acquisition (20220021S)

Parks Australia - Indian Oceans Territory (IOT) Grants Project: Satellite-Derived Bathymetry and Seafloor Habitat Classification Mapping of Christmas Island Marine Park

 

This project mapped Satellite-derived Bathymetry (SDB) and seafloor habitats at 2m horizontal spatial resolution, for the shallow waters (~0-25 m) of Christmas Island Marine Park. SDB data was processed using EOMAP's proprietary software and algorithm package Watcor-X, which generates SDB using multi-spectral satellite data. The SDB is based on the physics-based inversion method of the radiative transfer equation which models the pathway of light and its interaction through different media (e.g. atmosphere and water column). The thematic classification of the seabed was based on multispectral satellite image analytics. Satellite imagery was pre-processed by applying a set of image correction procedures to reduce environmental noise, resulting in a standardised reflectance surface of the subsurface and seafloor. The information on seafloor reflectance at different wavelengths was used to run an object-based classification procedure which groups objects of similar spectral characteristics, shape and texture into different classes of major seafloor habitat type.

 

These critical geospatial data layers provide the essential environmental baseline information for the long-term monitoring and management of the IOT Marine Parks. Having access to digital, georeferenced, high-resolution, satellite-derived maps of bathymetry and benthic habitats of shallow water areas, is of fundamental use in the areas of navigation and safety-at-sea, ecological research, environmental modelling, management and conservation, and monitoring the impacts from climate change.

This dataset is not to be used for navigational purposes.

Tags: AusSeabed, EARTH SCIENCES, HVC-144641, Oceans, Parks Australia - Indian Oceans Territory (IOT) Grants Project, Published_External, bathymetry, marine, satellite-derived bathymetry (SDB)
Organization: Australian Ocean Data Network
RV Investigator Voyage IN2021_E02 EM710 MKII Multibeam Echosounder Data

This record describes multibeam echosounder data collected on RV Investigator voyage IN2021_E02, to calibrate and commission new, upgraded and existing critical equipment (with sea trials and personnel training) onboard RV Investigator for upcoming voyages in the 2021 schedule and beyond. The primary objectives for this voyage were testing the Deep Corer winch stream and respool, Trawling winch calibration, CTD winch 1 &amp; 2 calibrations, HOTS commissioning and Heave Compensation testing, and Deep Towed Camera trial and calibration. The voyage took place between November 20 and November 28, 2021, departing from Hobart (TAS) and returning to Hobart.

The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry and backscatter information and watercolumn backscatter around east of Tasmania and around Freycinet Marine Park.

The EM710 MKII provides a 0.5° by 1° transmit and receive angular resolution respectively. The echosounder's nominal frequency range is from 40 to 100 kHz.

Data are stored in .all raw format for bathymetry and backscatter and .wcd format for watercolumn backscatter at CSIRO. There are 32 files totalling 12.2 GB of raw data in this dataset and 30 files totalling 39.7 GB of watercolumn data.

Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position.

Tide corrections were applied to the processed data using RTK/GPS height and the EGM2008 geoid model in Caris. Processed data has had outliers removed. Processed line data are available in *.gsf and ascii format, and processed bathymetry and backscatter grids in geotiff format.

Additional information regarding this dataset, including further information on processing streams, is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

Organization: Australian Ocean Data Network
National Gravity Compilation 2019 includes airborne DGIR 0.5VD 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 includes airborne DGIR 0.5VD grid is produced from the 2019 Australian National Gravity Grids B series. These gravity data were acquired under the project No. 202008. The grid has a cell size of 0.00417 degrees (approximately 435m). The data are derived from ground observations stored in the Australian National Gravity Database (ANGD) as at September 2019, supplemented by 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. Airborne gravity and gravity gradiometry data were also included to provide better resolution to areas where ground gravity data was not of a suitable quality. Out of the approximately 1.8 million gravity observations, nearly 1.4 million gravity stations in the ANGD together with Airborne Gravity surveys totaling 345,000 line km and 106,000 line km of Airborne Gravity Gradiometry were used to generate this grid. The ground and airborne 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 for ground observations 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. Airborne surveys have a line spacing ranging from 0.5 km to 2.5 km. The grid shows the half vertical derivative of the de-trended global isostatic residual (DGIR) anomalies over Australia and its continental margins. The DGIR grid was obtained by subtracting 3 quantities (i.e., the near-field isostatic correction, the far-field isostatic correction, and a first order trend correction) from Complete Bouguer Anomaly data (CBA) of the 2019 Australian National Gravity Grids B series. A half vertical derivative was calculated by applying a fast Fourier transform (FFT) process to the DGIR grid of the 2019 Australian National Gravity Grids to produce this grid.

Tags: 05vd, Australia, B series, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, None, Published_External, airborne data, de-trended, geophysical survey, geophysics, grav, gravity, grid, ground digital data, half vertical derivative, isostatic, marine data gravity gradiometry, national, raster, residual, satellite data, survey 202008
Organization: Australian Ocean Data Network
Underwater video and still images from the Browse basin (GA340/SOL5754)

Geoscience Australia undertook a marine survey of the Leveque Shelf (survey number SOL5754/GA0340), a sub-basin of the Browse Basin, in May 2013. This survey provides seabed and shallow geological information to support an assessment of the CO2 storage potential of the Browse sedimentary basin. The basin, located on the Northwest Shelf, Western Australia, was previously identified by the Carbon Storage Taskforce (2009) as potentially suitable for CO2 storage. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The principal aim of the Leveque Shelf marine survey was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Leveque Shelf area that may extend to the seabed. The survey also mapped seabed habitats and biota to provide information on communities and biophysical features that may be associated with seepage. This research, combined with deeper geological studies undertaken concurrently, addresses key questions on the potential for containment of CO2 in the basin's proposed CO2 storage unit, i.e. the basal sedimentary section (Late Jurassic and Early Cretaceous), and the regional integrity of the Heywood Formation (the seal unit overlying the main reservoir).

Underwater footage was collected from 49 stations, although quality varies between sites. Video files are located in folder 'SOL5754_TOWVID_VIDEOS'. Each avi file contains several video transects; the associated stations are noted in the file name. Real-time onboard video characterisations using the AIMS- TowedVid classification system are located in folder 'SOL5754_TOWVID_CSVs'.

Still images are located in folder 'SOL5754_TOWVID_STILLS' with sub-folders named according to station number, followed by gear code (CAM=underwater camera system), then the deployment number. For example, 12CAM02 represents a video transect from station 12 that was the 2nd video transect of the survey.

USBL (Ultra-short baseline) text files are located in folder 'SOL5754_USBL_FILES' and provide continuous navigational information on location, time (UTC) and depth of each video transect line.

Tags: Earth Sciences, HVC_144640, Marine Data, Published_External, marine
Organization: Australian Ocean Data Network
SSCN SEGMENT 2-B South-west Corner Marine Park Bathymetry Acquisition (20240014S)

This dataset is part of a broader survey carried out by EGS onboard the survey vessel RV Bold Explorer (RV BE) during the  SUBCO Subsea Cable Network (SSCN) cable route survey. 

The area is confined to the data within the South-west Corner&nbsp;Marine Park. The Survey team and client representative joined the RV Bold Explorer on 17th April 2024 at Fremantle Port,  Australia. Following the embarkation of the survey team, equipment testing and commissioning was carried out. Calibration and verification of the DGPS positioning system and survey gyros onboard RV BE were performed while the vessel was alongside at Fremantle Port, Australia between 17th April and 18th April 2024. 

Prior to departure, tow sensors and hull-mounted sensors were wet tested. All systems were found to be operational. The RV Bold Explorer departed Fremantle Port, Australia and transited to the first site on 19th April 2024. The offshore calibration of shallow water multibeam echosounder (MBES) and USBL were performed on 19th April 2024 while the  calibration of deep water MBES was carried out on 20th April 2024.

The SSCN Segment 2-B survey comprised an investigation of bathymetry, seabed features and shallow geology along the proposed route. A subsequent geotechnical sampling programme was also executed.

This dataset is not to be used for navigational purposes.

Tags: AusSeabed, Australia-wide geoscience data, EARTH SCIENCES, HVC_144641, Multibeam, Oceans, Offshore Mapping, Published_External, Resourcing Australia's Prosperity, bathymetry, marine
Organization: Australian Ocean Data Network
Videos and images from SOL5117 (Joseph Bonaparte Gulf)

The Joseph Bonaparte Gulf survey (SOL5117, GA survey #0325) was conducted on the R.V. Solander between 30 July and 30 September 2010 in collaboration with staff from the Australian Institute of Marine Science (AIMS) and the Museum and Art Gallery of Territory (MAGNT). This was a follow up survey from a survey in 2009 (SOL4934, GA survey #0322). The SOL5117 survey was undertaken under a Collaborative Agreement between GA and the AIMS. SOL5117 survey collected acoustic multibeam data (bathymetry and backscatter), sub-bottom profile data, as well as detailed geological (sedimentological, geochemical) and biological (towed-video, benthic sled, Smith McIntyre grabs) data for seabed environments (banks, channels and plains) from 4 offshore grids along a N-S transect.  In addition, shipboard photographs were taken of barcoded biological specimens. The aims of the survey were to map, identify and investigate potential geohazards and unique, sensitive environments that relate to infrastructure; and to use exisitng data to evaluate the capacity to predict geohazards and sensitive environments.

Underwater video footage and still photographc images (12 megapixel resolution) from towed-video were collected from 46 (Leg 1) and 33 (Leg 2) stations, although quality varies among transects and some still images were not of suitable quality for analysis. Video and image files or associated parent folders are named by station number, gear code (CAM = underwater camera system) and then the deployment number. For example, 'stn48CAM35' would represent a video transect from Station 48 that was the 35th video transect on the survey.

Tags: Earth Sciences, HVC_144640, Multimedia, Published_External, WA, environmental, geochemistry, geophysics, marine, sedimentology
Organization: Australian Ocean Data Network
National Gravity Compilation 2019 includes airborne - CSCBA 0.5VD 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 includes airborne - CSCBA 0.5VD grid is derived from the 2019 Australian National Gravity Grids B 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 by 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. Airborne gravity and gravity gradiometry data were also included to provide better resolution to areas where ground gravity data was not of a suitable quality. Out of the approximately 1.8 million gravity observations, nearly 1.4 million gravity stations in the ANGD together with Airborne Gravity surveys totaling 345,000 line km and 106,000 line km of Airborne Gravity Gradiometry were used to generate this grid. The ground and airborne 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. Airborne surveys have a line spacing ranging from 0.5 km to 2.5 km. Terrain corrections to gravity were calculated using both offshore bathymetry and onshore topography data. A first vertical derivative was calculated by applying a fast Fourier transform (FFT) process to the complete spherical cap Bouguer anomaly grid of the 2019 Australian National Gravity Grids B series to produce this grid. The grid shows a half vertical derivative of the complete Bouguer anomalies (B series) over Australia and its continental margins.

Tags: 05vd, Australia, B series, Bouguer, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, None, Published_External, complete, geophysical survey, geophysics, gradiometry. Airborne, grav, gravity, grid, ground digital data, marine, raster, satellite, spherical cap, survey 202008
Organization: Australian Ocean Data Network
Marine Survey - Geomorphology WMS

The Marine Survey Geomorphology Web Map Service contains the local scale (1:10 000) interpreted geomorphology maps available for download on Geoscience Australia's website. These interpreted geomorphology maps have been produced for numerous marine survey programs conducted in Australian mainland and Antarctic waters by both Geoscience Australia and our collaborators. Layers are grouped by survey or region and where available include both the Geoscience Australia and vessel survey identification numbers that contributed to each dataset.

Tags: Earth Sciences, Published_External, WMS, environment, geomorphology, marine, multibeam, offshore, seabed, web service
Organization: Australian Ocean Data Network
The determination of suspended-sediment loads in the southern Great Barrier Reef: field techniques

A mechanical system for collecting samples of suspended sediment in the water column at various stages of a tidal cycle, together with measurement of tidal current velocities, has provided quantitative data on suspended-sediment load transport in a modern coral reef environment. This is the first time that an experiment of this nature has been conducted in such an environment. Suspension load in the water column was monitored over One Tree Reef in the southern Great Barrier Reef by erecting sampling towers at various sites. Suspension loads were collected by siphon action at selected levels of the flooding tide and by a float-activated siphon system at selected levels of the falling tide. Suspended calcium carbonate in the samples was determined by complexometric titration. Water movement was monitored by fluorescein dye casts and arrays of bidirectional current meters. The results show large suspension-load fluxes, which fluctuate with the tidal cycle. Suspended-sediment transport into lagoons and over leeward margins is an important sedimentological process.

Tags: Earth Sciences, GA Publication, Journal, Published_External, QLD, marine
Organization: Australian Ocean Data Network
National Base Map MapServer

The National Base Map service provides seamless topographic colour mapping for the whole of Australia, including the outer islands of Norfolk, Lord Howe &amp; Macquarie Islands, the external territories of Cocos (Keeling), Christmas, Heard and McDonald Islands and the Australian Antarctic Territory. The service consists of data sourced from Geoscience Australia, Australian Antarctic Division &amp; OpenStreetMap. The data for Christmas Island has been sourced from the Christmas Island Edition 1 NATMAP Topographic Mapping dataset (1:30,000 scale). The data for Cocos (Keeling) Islands has been sourced from the Cocos (Keeling) Islands Edition 1 NATMAP Topographic Mapping dataset (1:25,000 scale). Vegetaion for the the Australian continent is an aggregated layer from ACLUMP (Australian Collaborative Land Use and Management Program). The topographic information was checked in 2008 using satellite imagery, and supplemented using other sources in 2009. Limited field checking has been undertaken for these data and therefore some information may not be accurate. Information and assistance was supplied by the Attorney General's Department (Territories of Australia) and Department of Environment, Water, Heritage and the Arts (Parks Australia). Geoscience Australia gratefully acknowledges contibutions to data content.) When viewing the map of mainland Australia beyond 1:100,000 scale, the data is derived from the Geoscience Australia GEODATA TOPO 250K product, except roads which are OpenStreetMap data, and in from 1:100,000 scale the data is derived from OpenStreetMap data ( © OpenStreetMap contributors). The suburbs layer is sourced from the Suburb 2018 and 2020 data, Australian Bureau of Statistics. The map portrays detailed graphic representations of features that appear on the Earth's surface. These features include cultural, hydrography, marine, transport, vegetation and relief themes. The SRTM data was acquired by NASA in February 2000 and was publicly released under Creative Commons licensing from November 2011 in ESRI Grid format. The SRTM DEM has quite different characteristics to DEMs derived by interpolation from topographic data. The SRTM data is derived from radar measurements that are dense (there is essentially a measurement at almost every grid cell) but noisy. The main processing of the SRTM DEM product has included: stripe removal, void filling and vegetation offset removal. Processing methods are further described in the 1 and 3 second SRTM Derived Products User Guide (Geoscience Australia, 2011). The bathymetry image used for this map is sourced from Natural Earth. Free vector and raster map data @ naturalearthdata.com.

Tags: Australia, Base Map, Earth Sciences, National Base Map, National Map, Published_External, Topography, web service
Organization: Australian Ocean Data Network
SSCN-SEGMENT-2-E Beagle Marine Park - Shallow Waters Bathymetry 2024 (20240002S)

This dataset is part of a broader survey carried out by EGS Survey Pty Ltd onboard the survey vessel RV Bold Explorer (RV BE) during the SUBCO Subsea Cable Network (SSCN) cable route survey.
The area is confined to the data within the Beagle Marine Park and was acquired between 7th March 2024 and the 4th April 2024.

The SSCN comprises a trunk route between Perth (Western Australia) and Sydney (New South Wales) with branches to Garden Island (Western Australia), Adelaide (South Australia), and Torquay (Victoria).
EGS Australia was contracted by OMS to supply hydrographic, geophysical, and geotechnical survey services, to provide data for engineering, construction, and subsequent maintenance of the SSCN Segment 2-E. The primary purpose of the survey is to determine a viable and secure route for the cable system that is clear of excessive slopes (&gt;6°), sea floor conditions that will adversely affect ploughing and burial of the cable, and obstacles such as rock outcrops, cable spans, existing cables, pipelines, shipwrecks, etc. This enables exact cable lengths, cable design and installation parameters to be defined to minimise problems over the designated life of the system.
This dataset is not to be used for navigational purposes.

Not to be used for navigational purposes

Tags: AusSeabed, Australia-wide geoscience data, Bass Strait (Great Australian Bight), Bathymetry, EARTH SCIENCES, Marine, Offshore Mapping, Published_External, RV Bold Explorer, Resourcing Australia's Prosperity, Sub Bottom Profile, multi-beam echosounders
Organization: Australian Ocean Data Network
Comment on Dye (2006) - "Is Geomorphic Zonation a Useful Predictor of Patterns of Benthic Infauna in Intermittent Estuaries in New South Wales, Australia?"

In a recent paper, Dye (2006) analyzed the distribution of species of macrobenthos and meiobenthos
within two geomorphic facies of four small intermittently closed and open estuaries in New South Wales, Australia (colloquially known as ICOLLs). We believe that Dye's (2006) study is not an appropriate test of the Roy et al. (2001) habitat classification, and consequently several of the
hypotheses posed by Dye do not follow logically from their model.

Tags: AU-NSW, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, coasts, environmental, geomorphology, marine
Organization: Australian Ocean Data Network