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-Phoenix on survey GA-353 conducted 19-25 June 2015. The Phoenix is an Iver AUV operated by Australian Marine Ecology Pty Ltd and the University of Sydney (Australian Centre for Field Robotics). It includes a stereo camera system (i.e. two cameras), a USBL, and a sidescan sonar. Stereo image pairs were collected at a rate of 2 Hz with a target altitude of 2 m above the seabed and speed of 1 m s-1 (2 knots) using high sensitivity CCD cameras (Allied Vision Manta G-145C, resolution of 1388 x 1038 pixels). Illumination was by two strobes mounted in the fore and aft-sections of the vehicle and synchronised with the cameras. The camera lens and stereo orientation properties were calibrated in a pool immediately prior to the survey. The Phoenix returned usable still images at 12 sites, but strong currents resulted in truncated transects due to difficulty diving on Stations 14, 37, and 47, and strobe failure on Stations 40 and 47 resulted in reduced image quality. For each station, this dataset contains post-processed geotiffs acquired from a single AUV camera, track files, and a compressed mosaic of combined images. A Word file provides additional data about the folder structure, file types, and post-processing.

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-Phoenix on survey GA-353 conducted 19-25 June 2015. The Phoenix is an Iver AUV operated by Australian Marine Ecology Pty Ltd and the University of Sydney (Australian Centre for Field Robotics). It includes a stereo camera system (i.e. two cameras), a USBL, and a sidescan sonar. Stereo image pairs were collected at a rate of 2 Hz with a target altitude of 2 m above the seabed and speed of 1 m s-1 (2 knots) using high sensitivity CCD cameras (Allied Vision Manta G-145C, resolution of 1388 x 1038 pixels). Illumination was by two strobes mounted in the fore and aft-sections of the vehicle and synchronised with the cameras. The camera lens and stereo orientation properties were calibrated in a pool immediately prior to the survey. The Phoenix returned usable still images at 12 sites, but strong currents resulted in truncated transects due to difficulty diving on Stations 14, 37, and 47, and strobe failure on Stations 40 and 47 resulted in reduced image quality. For each station, this dataset contains post-processed geotiffs acquired from a single AUV camera, track files, and a compressed mosaic of combined images. A Word file provides additional data about the folder structure, file types, and post-processing.

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-Phoenix on survey GA-353 conducted 19-25 June 2015. The Phoenix is an Iver AUV operated by Australian Marine Ecology Pty Ltd and the University of Sydney (Australian Centre for Field Robotics). It includes a stereo camera system (i.e. two cameras), a USBL, and a sidescan sonar. Stereo image pairs were collected at a rate of 2 Hz with a target altitude of 2 m above the seabed and speed of 1 m s-1 (2 knots) using high sensitivity CCD cameras (Allied Vision Manta G-145C, resolution of 1388 x 1038 pixels). Illumination was by two strobes mounted in the fore and aft-sections of the vehicle and synchronised with the cameras. The camera lens and stereo orientation properties were calibrated in a pool immediately prior to the survey. The Phoenix returned usable still images at 12 sites, but strong currents resulted in truncated transects due to difficulty diving on Stations 14, 37, and 47, and strobe failure on Stations 40 and 47 resulted in reduced image quality. For each station, this dataset contains post-processed geotiffs acquired from a single AUV camera, track files, and a compressed mosaic of combined images. A Word file provides additional data about the folder structure, file types, and post-processing.

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. It was flown at an altitude of XX m at ~ 1.5 m/s with XX megapixel images acquired every XX seconds using a XX lighting system (the latter functional for Stations XX , XX, XX). 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.

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. It was flown at an altitude of XX m at ~ 1.5 m/s with XX megapixel images acquired every XX seconds using a XX lighting system (the latter functional for Stations XX , XX, XX). 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.

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. It was flown at an altitude of XX m at ~ 1.5 m/s with XX megapixel images acquired every XX seconds using a XX lighting system (the latter functional for Stations XX , XX, XX). 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.

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. It was flown at an altitude of XX m at ~ 1.5 m/s with XX megapixel images acquired every XX seconds using a XX lighting system (the latter functional for Stations XX , XX, XX). 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.

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. It was flown at an altitude of XX m at ~ 1.5 m/s with XX megapixel images acquired every XX seconds using a XX lighting system (the latter functional for Stations XX , XX, XX). 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.

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 Autonomous Underwater Vehicle (AUV) Phoenix and AUV Sirius on survey GA-355 conducted 18-22 February 2016 on the M.V. Dell Richey II. The AUV Phoenix was the main system used to collect imagery analysed in the GMEM project using the two loop pattern (Figure 1) from previous surveys (GA-350 and GA-353). The AUV Sirius was deployed to collect concurrent dense image grids at selected stations (05, 08, 37, 45) and to provide a back-up to the Phoenix in the event of equipment issues. This occurred at Stations 40 and 41, and as such the Sirius collected images in the two-loop pattern. In addition to the main study area for the GMEM, the AUV Sirius was also deployed outisde Devonport, Tasmania in order to establish workflow, fine-tune technical aspects, and census scallop beds that were known to be in ill health. Imagery from these stations are included in sub-folder 'Devonport_Sites'. Due to strong currents and possible navigation issues, some of the AUV paths deviated from the planned path and also varied in altitude. Nevertheless, the georeferencing of images released in this data package reflects the actual position of the AUV during image acquisition. Post-processing included image colour-balancing and simultaneous localisation and mapping (SLAM) processing of the stereo imagery to improve georeferencing of the imagery. The optical imagery is provided in zip files as geotiffs (individual colour-corrected images), mosaics, and mesh (3D seafloor reconstructions).

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 Autonomous Underwater Vehicle (AUV) Phoenix and AUV Sirius on survey GA-355 conducted 18-22 February 2016 on the M.V. Dell Richey II. The AUV Phoenix was the main system used to collect imagery analysed in the GMEM project using the two loop pattern (Figure 1) from previous surveys (GA-350 and GA-353). The AUV Sirius was deployed to collect concurrent dense image grids at selected stations (05, 08, 37, 45) and to provide a back-up to the Phoenix in the event of equipment issues. This occurred at Stations 40 and 41, and as such the Sirius collected images in the two-loop pattern. In addition to the main study area for the GMEM, the AUV Sirius was also deployed outisde Devonport, Tasmania in order to establish workflow, fine-tune technical aspects, and census scallop beds that were known to be in ill health. Imagery from these stations are included in sub-folder 'Devonport_Sites'. Due to strong currents and possible navigation issues, some of the AUV paths deviated from the planned path and also varied in altitude. Nevertheless, the georeferencing of images released in this data package reflects the actual position of the AUV during image acquisition. Post-processing included image colour-balancing and simultaneous localisation and mapping (SLAM) processing of the stereo imagery to improve georeferencing of the imagery. The optical imagery is provided in zip files as geotiffs (individual colour-corrected images), mosaics, and mesh (3D seafloor reconstructions).