AHO Reference Surfaces Cairns 0.5m 2023 (20230011R)

The Cairns Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) on 27 May 2020. This surface was created from a contracted national reference survey in Cairns QLD, collected for the purpose of calibrating multibeam echosounders. It was conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program, acquired using R2Sonic 2022, and processed using Caris HIPS & SIPS. Seperate grids in 0.5m resolution are provided for the three surveyed sites within this survey area in MSL, LAT and Ellipsoid vertical datum. The dataset was then exported as a 0.5m resolution, 32 bit floating point GeoTIFF grid of the survey area.This dataset is not to be used for navigational purposes.

本凯恩斯参考表面水深测量任务于2020年5月27日为澳大利亚水文局（Australian Hydrographic Office，AHO）开展。该数据集基于昆士兰州凯恩斯市的签约国家基准测量数据构建，此项测量的初衷为校准多波束测深仪。本任务作为水文计划行业合作项目（Hydroscheme Industry Partnership Program）的一部分，由澳大利亚水文局委托实施，采用R2Sonic 2022设备完成数据采集，并通过Caris HIPS & SIPS软件进行后期处理。针对本次测量区域内的三个勘测站点，分别提供了采用平均海平面（Mean Sea Level，MSL）、最低天文潮位（Lowest Astronomical Tide，LAT）及椭球垂直基准面（Ellipsoid vertical datum）的0.5米分辨率格网数据。最终数据集以0.5米分辨率的32位浮点型GeoTIFF格网格式导出，覆盖整个测量区域。本数据集不得用于导航用途。