Davis Multibeam Survey 2016/17, Antarctica (GA-0357/AAP 5093) - High Resolution Backscatter Grid

Geoscience Australia, the Royal Australian Navy (RAN) and the Australian Antarctic Division (AAD) conducted a hydrographic surveying and seafloor characterisation survey in nearshore waters offshore from Davis Station in the Australian Antarctic Territory. The multibeam data was acquired during January-February 2017 using two workboats. Geoscience Australia used the AAD workboat Howard Burton and the Royal Australian Navy used their Antarctic Survey Vessel (ASV) Wyatt Earp. The survey is a component of Australian Antarctic Program (AAP) Project 5093 Hydrographic Surveying and Seafloor Characterisation Program (Chief Investigator: Ursula Harris, AAD). The objective of the survey was to map the seabed environment in shallow (<300 m) coastal waters adjacent to Davis station in the Vestfold Hills region, to obtain data for the compilation of nautical charts and to acquire fundamental baseline data necessary for informed environmental management, science, infrastructure and logistical operations. Data collected during the survey includes high-resolution multibeam bathymetry and backscatter data, sediment samples, seafloor imagery and sub-bottom profiles. This dataset comprises a backscatter grid from multibeam sonar data acquired using the AAD workboat Howard Burton, gridded at 1 m spatial resolution, covering a combined area of 90 km2. The Chief Scientist onboard the Howard Burton was Dr. Jodie Smith (Geoscience Australia).

澳大利亚地球科学局（Geoscience Australia）、澳大利亚皇家海军（Royal Australian Navy, RAN）与澳大利亚南极局（Australian Antarctic Division, AAD）在澳大利亚南极领地内的戴维斯站近岸近海海域联合开展了水文勘测与海底特征勘测作业。2017年1-2月，作业团队使用两艘工作船采集多波束数据：澳大利亚地球科学局使用澳大利亚南极局工作船“霍华德·伯顿号”，澳大利亚皇家海军则使用其南极勘测船（Antarctic Survey Vessel, ASV）“怀亚特·厄普号”。本次勘测是澳大利亚南极计划（Australian Antarctic Program, AAP）5093号项目“水文勘测与海底特征勘测计划”的组成部分，该项目首席研究员为澳大利亚南极局的厄休拉·哈里斯（Ursula Harris）。本次勘测的核心目标包括：绘制维斯特福尔兹丘陵（Vestfold Hills）地区戴维斯站周边水深小于300米的近岸海域海底环境图，获取编制航海图所需的基础数据，以及采集为科学环境管理、科研工作、基础设施建设与后勤作业决策提供支撑的关键基线数据。本次勘测采集的数据类型涵盖高分辨率多波束测深与反向散射数据、沉积物样品、海底影像及浅地层剖面数据。本数据集包含由澳大利亚南极局工作船“霍华德·伯顿号”采集的多波束声呐数据生成的反向散射栅格数据，其空间分辨率为1米，总覆盖面积达90平方千米。“霍华德·伯顿号”的首席科学家为澳大利亚地球科学局的乔迪·史密斯（Jodie Smith）博士。