Shellharbour Tharawal marine survey - bathymetry (NSWENV20171130/GA4878)

This resource includes bathymetry data acquired during the Shellharbour Tharawal marine survey collected by the NSW government (Department of Planning and Environment – DPE) during the period 25 May – 30 November 2017 onboard the RV Bombora using DPE’s R2Sonic 2022 multibeam sonar. The Shellharbour bathymetry survey was led by Dr. Bradley Morris (DPE Coasts and Marine) as part of SeabedNSW program funded by NSW Coastal Reforms package. The purpose of the project was to 1) provide a baseline dataset and 2) map the spatial distribution of seabed types. The data will provide a better understanding of nearshore sediment distribution/transport mechanisms for improved assessment of threats/risks associated with erosion events (i.e. East Coast Lows) and changing sea levels. This dataset contains 2 x 32-bit floating point geotiff files of bathymetry (2m and 5m gridded) for the study area, derived from the processed Hypack, R2Sonic GUI, POSView, POSPac and Qimera software. A detailed report on the survey is provided in: i) AusSeabed Survey Report and ii) NSW DPE Scientific Rigor Statement NSWENV_20171130_Shellharbour_MB_ScientificRigour.pdf. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the Senior Team Leader and the department’s Hydrosurveyor, Coasts and Marine Science, NSW Dept. Planning and Environment.

本数据集包含新南威尔士州政府规划与环境部（Department of Planning and Environment，简称DPE）于2017年5月25日至11月30日期间，在"RV Bombora"号科考船上使用DPE的R2Sonic 2022多波束声呐采集的Shellharbour Tharawal海洋调查水深地形数据。本次Shellharbour水深地形调查由布拉德利·莫里斯博士（DPE海岸与海洋部门）牵头，作为由新南威尔士州海岸改革计划资助的SeabedNSW项目的组成部分。本项目旨在实现两项核心目标：1）建立基准数据集；2）绘制海底类型的空间分布图谱。该数据集可助力深化对近岸沉积物分布与输运机制的认知，进而优化针对海岸侵蚀事件（即东海岸低压系统）及海平面变化相关威胁与风险的评估能力。本数据集包含研究区的2份32位浮点型GeoTIFF格式水深地形栅格文件（分辨率分别为2米与5米），数据源自经Hypack、R2Sonic GUI、POSView、POSPac及Qimera软件处理后生成的成果。本次调查的详细报告可参见：i）AusSeabed调查报告；ii）NSWENV_20171130_Shellharbour_MB_ScientificRigour.pdf。本数据集不得用于导航用途。本数据集经新南威尔士州规划与环境部海岸与海洋科学部门高级团队负责人及部门水文测绘师授权发布。