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International Ocean Discovery Program Lord Howe Rise Marine Seismic and Sampling Cnr Jerrabomberra Avenue and Hindmarsh Drive, Survey 2017 Symonston ACT 2609 GPO Box 378, Canberra ACT 2601 Australia Information Sheet for Stakeholders +61 2 6249 9111 www.ga.gov.au ABN 80 091 799 039 Introduction Geoscience Australia (GA) and the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) are undertaking a collaborative project with involvement of the international science community to examine the geological and climatic history of the Lord Howe Rise located about 800 km east of Australia. The project comprises four main activities: 1. Deep Seismic Survey for Crustal Structure and Tectonic Framework (completed March–May 2016). 2. Detailed Site Survey at Proposed IODP Drilling Sites (November–December 2017; this information sheet). 3. Deep Stratigraphic Drilling (proposed for 2019/2020, if funded). 4. Processing and storage of data and samples. Information from the surveys and drilling will provide a globally-significant record of the evolution of the Earth’s crust and of climatic and environmental change during the Mesozoic Era (250–66 million years ago). The drilling stage of the project will be conducted through the International Ocean Discovery Program (IODP Proposal 871-CPP). This information sheet describes the timing, location and details of the 2017 Detailed Site Survey and invites comment and enquiries from stakeholders with an interest in the proposed survey area. Survey Location and Timing The Detailed Site Survey will take place in the southern Coral Sea, about 800 km east of Brisbane. Operations will focus on sites that are being considered for IODP drilling (Figure 1). At these sites, seafloor imagery, bathymetry, sub-bottom profiles, seafloor samples and a detailed grid of seismic lines will be acquired (100– 200 m line spacing). A single seismic line of about 200 km in length will also be acquired across one of the sites. The survey is scheduled to take place between 14 November and 27 December 2017. Figure 1. Location map of seismic and sampling survey proposed for November and December 2017 Survey Activities Dates indicated below are indicative only and subject to change. • 24 hour operation of a deep-towed seafloor imaging, bathymetry and sub-bottom mapping system (16–22 November). • Daytime seabed sampling operations: piston coring, grab sampling (29 November–2 December). • Temporary deployment and recovery of up to 100 ocean bottom seismometers on the seabed (9–25 December). • 24 hour operation of a towed seismic system using an airgun array with up to 7800 cubic inch capacity (12–21 December). • 24 hour operation of shipboard multibeam, sub-bottom profiles, gravity and magnetics (14 November–27 December). The seismic array will be used to image the subsurface to a depth of 30 km or more. Ocean bottom seismometers are passive instruments used to record seismic signals that allow measurements of the thickness of the Earth’s crust. Survey Vessel The survey vessel will be the RV Kairei, owned and operated by JAMSTEC. In accordance with requirements for foreign-flagged vessels seeking to undertake marine scientific research under UNCLOS Part XIII within Australia’s Exclusive Economic Zone, an application for Public Vessel Status will be submitted to the Department of Foreign Affairs and Trade. Environmental Impact Geoscience Australia is preparing an evaluation of the possible environmental impact of the Detailed Site Survey as required under the Environment Protection and Biodiversity Conservation Act 1999 (Cth) (EPBC Act). This evaluation will include identification of listed threatened and migratory species that may occur in, or may relate to, the nominated survey area. Specific focus will be placed on assessing the likely physical and/or behavioural impacts of the seismic activity on marine fauna (including marine mammals). Sound propagation from the seismic array and acoustic exposure levels modelled prior to the Deep Seismic Survey completed in 2016 will be used to inform this assessment. The use of air-guns during the seismic survey will be subject to the EPBC Act Policy Statement 2.1 – Interaction between offshore seismic exploration and whales. The risk of potential disturbance and injury to marine mammals from underwater noise produced by the airgun array will be carefully considered and adaptive management will be used in conjunction with other mitigation measures, as outlined in EPBC Act Policy Statement 2.1. These measures will include pre start-up observations, soft-start procedures, increased precaution zones, as well as visual and passive acoustic monitoring (PAM) for whales by trained marine mammal observers and passive acoustic monitoring operators. All data collected from the survey will be made freely available, including public release of a post-survey report in 2018. Contact details for Geoscience Australia For further information or to provide comment on the proposed survey please contact Jessica Gurney no later than 7 April 2017. Jessica Gurney Project Manager Geoscience Australia P: (02) 6249 9043 E: [email protected] 13 March 2017 Re: International Ocean Discovery Program Lord Howe Rise Marine Seismic and Sampling Survey Invitation to Comment Dear Sir/Madam, The Australian Government, through Geoscience Australia, is proposing to conduct a detailed scientific marine seismic and sampling survey on the Lord Howe Rise (southern Coral Sea) in 2017. The survey will be conducted in collaboration with the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) and is part of a larger research project proposed under the International Ocean Discovery Program (IODP Proposal 871-CPP) titled “First Deep Stratigraphic Record for the Cretaceous Eastern Gondwana Margin: Tectonics, paleoclimate and deep life on the Lord Howe Rise high-latitude continental ribbon”. The proposed survey is scheduled to take place between 9 November and 28 December 2017 and will involve the operation of a multi-channel towed seismic system, the temporary deployment of ocean bottom seismometers on the seafloor, and the collection of seabed imagery and sediment samples. Further information regarding the survey is provided in the attached information sheet. Geoscience Australia is currently preparing a referral report for the proposed survey that will address the potential impacts of the survey activities on matters of environmental significance (including Threatened and Migratory species) protected under the Environment Protection and Biodiversity Conservation (EPBC) Act 1999. This EPBC referral process involves public consultation with relevant stakeholders. To assist us with compiling a thorough referral, we welcome the submission of any comments or concerns you may have about the proposed survey. To ensure timely submission of the EPBC Referral to the Australian Government’s Minister for the Environment and Energy, we would greatly appreciate your response by 7 April 2017. Please don’t hesitate to contact me with any questions you may have regarding the proposal. Sincerely, Jessica Gurney Project Manager, Lord Howe Rise Survey Geoscience Australia P: (02) 6249 9043 E: [email protected] D2017-55542 From: Gurney Jessica Sent: Friday, 24 March 2017 To: 'Lay, Steven K' Subject: RE: Invitation to Comment: Lord Howe Rise Marine Seismic and Sampling Survey 2017 Hi Steven, As requested, please find attached the zip file with a map in shape file. Kind regards, Jessica Jessica Gurney | Project Manager Energy System Branch | Resources Division From: Lay, Steven K Sent: Friday, 24 March 2017 10:50 AM To: Gurney Jessica Subject: RE: Invitation to Comment: Lord Howe Rise Marine Seismic and Sampling Survey 2017 Hi Jessica Would you be able to provide a shapefile or KMZ or the proposed survey area? This will help Telstra assess if there is any impact to international submarine telecommunication cables in the Lord Howe Rise region. Steven K Lay S Submarine Cable Project Engineer Marine Operations & Services International Operations & Services, Telstra Global Enterprise & Services D2017-55482 From: Phillip Murphy Sent: Monday, 10 April 2017 To: Gurney Jessica Subject: RE: Due on 7 April: Invitation to Comment: Lord Howe Rise Marine Seismic and Sampling Survey 2017 Hi Jessica, Understood. Regards Philip Murphy General Manager Marine Operations Service Global Enterprises & Services From: Gurney Jessica Sent: Monday, 10 April 2017 To: Murphy, Philip Cc: Lay, Steven K Subject: RE: Due on 7 April: Invitation to Comment: Lord Howe Rise Marine Seismic and Sampling Survey 2017 Hi Philip, The coordinates that I sent to you in my previous email is for define area for main operation, seabed mapping and seismic activities. The file attached in this email has coordinates defining area for opportunistic mapping during transit to and from port using shipboard systems. Please let me know if there are any issues. Thank you. Kind regards, Jessica Jessica Gurney | Project Manager Energy System Branch | Resources Division From: Gurney Jessica Sent: Monday, 10 April 2017 To: 'Murphy, Philip' Cc: Lay, Steven K Subject: RE: Due on 7 April: Invitation to Comment: Lord Howe Rise Marine Seismic and Sampling Survey 2017 Hi Philip, As requested, please find attached an Excel Spreadsheet with coordinates of the survey area. Please let me know if there are any issues. Thank you. Kind regards, Jessica Jessica Gurney | Project Manager Energy System Branch | Resources Division From: Murphy, Philip Sent: Friday, 7 April 2017 To: Gurney Jessica
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