Bathymetry grid of Lord Howe Island

Geoscience Australia carried out a marine survey on Lord Howe Island shelf (NSW) in 2008 (SS062008) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments and infauna, rock coring, observation of benthic habitats using underwater towed video, and measurement of ocean tides and wavegenerated currents. Subbottom profile data was also collected to map sediment thickness and shelf stratigraphy. Data and samples were acquired using the National Facility Research Vessel Southern Surveyor. Bathymetric data from this survey was merged with other preexisting bathymetric data (including LADS) to generate a grid covering 1034 sq km. As part of a separate Geoscience Australia survey in 2007 (TAN0713), an oceanographic mooring was deployed on the northern edge of Lord Howe Island shelf. The mooring was recovered during the 2008 survey following a 6 month deployment.

lh_4m is an ArcInfo grid of the Lord Howe survey area produced from the processed EM300 bathymetry data of the survey area using the CARIS HIPS and SIPS software.

澳大利亚地球科学局（Geoscience Australia）于2008年针对豪勋爵岛陆架（新南威尔士州，NSW）开展海洋调查（航次编号SS062008），旨在通过同位采集表层沉积物与底内生物样品、岩石岩心钻探、水下拖曳视频观测底栖生境，以及测量海洋潮汐与波浪生成流，完成海底水深制图并表征底栖环境特征。本次调查同时采集浅地层剖面数据，用于绘制沉积物厚度与陆架地层分布图。所有数据与样品均由国家设施科考船“南方考察者号”（Southern Surveyor）获取。本次调查获取的水深数据与其他现有水深数据（包括LADS）进行融合，生成覆盖1034平方公里的格网数据集。作为澳大利亚地球科学局2007年独立开展的另一项调查（航次编号TAN0713）的组成部分，研究人员在豪勋爵岛陆架北缘布放了一套海洋锚系观测系统，该锚系在完成6个月的布放任务后，于2008年的本次调查中被回收。
lh_4m是基于本次调查处理后的EM300水深数据，通过CARIS HIPS和SIPS软件生成的豪勋爵岛调查区域ArcInfo格网数据集。

搜集汇总

背景与挑战

背景概述

该数据集是Lord Howe Island海域的测深网格数据，由Geoscience Australia于2008年海洋调查生成，覆盖1034平方公里区域，用于绘制海底地形和表征底栖环境。数据集以ArcInfo网格格式提供，发布于2011年，采用开放许可，地理范围明确，属于海洋地球科学领域。