Elizabeth and Middleton Reef bathymetry survey (GA4848)

This resource includes bathymetry data for Elizabeth and Middleton Reef within Lord Howe Marine Park collected by Geoscience Australia during the period 31 January to 6 February 2020 on the Australian Maritime College vessel, TV Bluefin. \nThe survey was undertaken as a collaborative project funded through the National Environmental Science Program Marine Biodiversity Hub, with the Institute for Marine & Antarctic Studies (University of Tasmania), NSW Department of Primary Industries, University of Sydney (Centre for Field Robotics) and Parks Australia. \nThe purpose of the survey was to collect baseline information for benthic habitats within the National Park Zone (Middleton Reef) and Recreational Use Zone (Elizabeth Reef) of the marine park. \nThese data will support ongoing environmental monitoring within the Temperate East Marine Park Network as part of the 10-year management plan (2018-2028). \nData acquisition for the project included seabed mapping using multibeam sonar (Kongsberg EM 2040C HD, 300 kHz), seabed imagery acquisition by Autonomous Underwater Vehicle (AUV Sirius), sediment samples (grab) and imagery of demersal fish communities by baited remote underwater video (BRUV). \nThis dataset comprises two bathymetry grids derived from multibeam sonar data gridded at 5 m spatial resolution, covering a combined area of 312 km2 including the transit.\nA detailed report on the survey is provided in: Carroll, A et al. 2020. Australian Marine Park Baseline and Monitoring Survey: Post Survey Report, Middleton and Elizabeth Reefs, Lord Howe Marine Park. Report to the National Environmental Science Program, Marine Biodiversity Hub.\nThis dataset is not to be used for navigational purposes.\nThis dataset is published with the permission of the CEO, Geoscience Australia

本数据集包含豪勋爵岛海洋公园内伊丽莎白礁与米德尔顿礁的水深测量数据，这些数据由澳大利亚地球科学局（Geoscience Australia）于2020年1月31日至2月6日期间，搭乘澳大利亚海事学院的“蓝鳍号”（TV Bluefin）科考船采集得到。
本次勘测为合作项目，由国家环境科学项目海洋生物多样性中心资助，合作方包括海洋与南极研究所（塔斯马尼亚大学）、新南威尔士州第一产业部、悉尼大学现场机器人研究中心以及澳大利亚公园局（Parks Australia）。
本次勘测的目的是为该海洋公园的国家公园区（米德尔顿礁）与休闲使用区（伊丽莎白礁）内的底栖生境收集基础数据。
这些数据将作为2018-2028年十年管理计划的一部分，用于支持东温带海洋公园网络内的持续环境监测工作。
本项目的数据采集工作包括：使用多波束声呐（Kongsberg EM 2040C HD，300 kHz）开展海底制图；通过自主水下航行器（Autonomous Underwater Vehicle，AUV）“天狼星号”（Sirius）采集海底影像；抓斗采集沉积物样品；以及利用诱饵式远程水下视频（Baited Remote Underwater Video，BRUV）记录底栖鱼类群落影像。
本数据集包含两份由多波束声呐数据生成的水深网格，空间分辨率为5米，覆盖总面积达312平方千米（含航行过境区域）。
本次勘测的详细报告详见：Carroll A等，2020年。《澳大利亚海洋公园基线与监测勘测：事后调查报告——豪勋爵岛海洋公园米德尔顿礁与伊丽莎白礁》，提交给国家环境科学项目海洋生物多样性中心的报告。
本数据集不得用于导航用途。
本数据集经澳大利亚地球科学局首席执行官许可后发布。