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EARTH SCIENCE | OCEANS

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  • This metadata record provides a brief overview of the National Environmental Science Program (NESP) Marine Biodiversity (MB) Hub. The record acts as an aggregation point for all NESP Marine Biodiversity Hub data collections and projects developed as part of this research program. The National Environmental Science Program (NESP) is a $142.5 million initiative of the federal government providing a long-term commitment to environment and climate research. The programme builds on its predecessors – the National Environmental Research Program (NERP) and the Australian Climate Change Science Programme (ACCSP) – to support decision-makers to understand, manage and conserve Australia’s environment by funding world-class biodiversity and climate science. The NESP funding program runs from July 2015 to June 2021 and provides funding for six research hubs. The Marine Biodiversity Hub is a collaborative partnership supported by funding from the Australian Government administered by the Department of the Environment's National Environmental Research Programme. The Marine Biodiversity Hub is comprised of scientists from 10 major research institutions undertaking research of Australian oceans and marine environments, including temperate coastal water quality and marine species. The Marine Biodiversity Hub is administered by the University of Tasmania, and led by Professor Nic Bax. The 4 themes of the Marine Biodiversity Hub under the NESP program include: A. Improving the management of threatened and migratory species B. Supporting management decision making C. Understanding pressures on the marine environment D. Understanding biophysical, economic and social aspects of the marine environment Research products from the NESP Marine Biodiversity Hub are available from http://nespmarine.edu.au and the Australian Ocean Data Network catalogue (http://catalogue.aodn.org.au)

  • ***NOTE THIS RECORD HAS BEEN SUPERSEDED BY NESP PROJECT E2 (details below)*** Cumulative Sound Exposure Levels of shipping traffic in Australian waters was undertaken over a one year period (Sept. 2015 to Oct 2016) within the Australian Exclusive Economic Zone. A proof of concept cumulative ship noise map was developed around Australia using the Perth Canyon source spectra as the source level for different vessel type categories. Sound propagation models were then run cumulatively, integrating the time spent by ships within a grid cell over the one-year period. This record describes the proof of concept map of commercial shipping noise in Australian waters developed under NESP Project C5. Refer to final report (https://www.nespmarine.edu.au/document/quantification-risk-shipping-large-marine-fauna-across-australia-final-report) for full methodology and PDF map. The ship noise modelling demonstrated the potential for using simple and readily accessible transmission models to provide an accurate representation of shipping noise within the marine soundscape. A subsequent high resolution sound exposure map was generated under NESP Project E2. See https://catalogue.aodn.org.au/geonetwork/srv/en/metadata.show?uuid=480847b4-b692-4112-89ff-0dcef75e3b84

  • The goal of our study was to split the Australian maritime Exclusive Economic Zone (EEZ) into a set of smaller acoustic zones, whereby each zone is characterised by a set of environmental parameters that vary more across than within zones. The environmental parameters chosen reflect the hydroacoustic (e.g., water column sound speed profile), geoacoustic (e.g., sound speeds and absorption coefficients for compressional and shear waves), and bathymetric (i.e., seafloor depth and slope) parameters that directly affect the way in which sound propagates. Mean zone parameters and shape files are available for download. The zones may be used to map, for example, underwater sound from commercial shipping within the entire Australian EEZ.

  • Recordings of ship noise were analysed to build a catalogue of ship noise signatures in Australian waters, including source spectra and source levels. The data described by this record is derived from an initial set of five deployments by the Integrated Marine Observing System (IMOS) acoustic observatories. This dataset has been snapshotted to coincide with the conclusion of the National Environmental Science Program (NESP 1) Hub in May 2021, but is an ongoing dataset. For the most current version of this data, please contact Christine Erbe (see Point-of-Contact).

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    Water samples collected on the RV Investigator Transit voyage IN2018_T01 were analysed for concentration of chlorophyll a.

  • This record describes a gridded map of ocean wind noise for Australian EEZ for a typical April-September period.

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    Secchi disk data collected by students on the RV Investigator training voyage (Transit IN2018_T01).

  • This project quantified underwater noise from ships in Australian waters, with the ultimate goal of guiding the management of noise impacts on marine fauna. This record describes a gridded map of cumulative sound exposure from shipping in the Australian EEZ for a typical April-September period.

  • Map of cumulative sound exposure from shipping in the GBR for winter 2015 (June-September).

  • We have used a quantitative definition of marine heatwaves to detect all events which have occurred in 12 regions across the continental shelf off eastern Tasmania over 1993-2015. For each event in each region this atlas includes information on (i) event properties including intensity, duration and depth, (ii) maps of regional ocean circulation and ocean temperature during the event, and (iii) maps of regional atmospheric conditions during the event (air temperature and surface wind). Also provided are summary statistics including the typical conditions which give rise to marine heatwaves in each region and annual time series demonstrating interannual variability and long term trends in marine heatwave properties. Provided is a comprehensive document presenting the atlas and a set of CSV files containing the underlying data.