RV Investigator Voyage IN2018_V05 Gravity Data

This record describes gravity data collected on RV Investigator voyage IN2018_V05, 'How does a standing meander southeast of Tasmania brake the Antarctic Circumpolar Current?' which departed Hobart on the 16th October 2018 and returned to Hobart on the 16th November 2018. The objectives of the voyage included: (1) Deployment of a fleet of EM-APEX profiling floats, (2) Deployment of a tall mooring at the crest of a meander in the Polar Front of the Antarctic Circumpolar Current, (3) Full-depth hydrographic survey of the physics and biogeochemistry of the targeted ACC meander, conducting transects across the front and (4) Triaxus transects across and along the front.

The gravity meter instrument is a MicroG Lacoste Air-Sea II. Data are stored in .ENV and .DAT data files at CSIRO. There are 64 files totalling 514 MB of raw data in this dataset. Wharf ties were not undertaken. Gravity data was acquired for the full duration of the voyage from Hobart to Hobart.

No processing has been conducted on this data.

Additional information regarding this dataset is contained in the GSM data acquisition and processing report.

本记录描述了“调查者号（RV Investigator）”航次IN2018_V05所采集的重力数据，该航次的科考主题为“塔斯曼尼亚东南部的稳态弯曲流如何削弱南极绕极流（Antarctic Circumpolar Current, ACC）？”，航次于2018年10月16日从霍巴特启航，2018年11月16日返回霍巴特。

本次航次的科考目标包括：(1) 部署EM-APEX剖面浮标集群；(2) 在南极绕极流极锋弯曲流的峰顶处布设高型系泊装置；(3) 针对目标南极绕极流弯曲流的物理与生物地球化学特征开展全水深水文调查，布设横穿该锋面的断面；(4) 沿并横跨该锋面开展Triaxus断面测量。

本次使用的重力仪为MicroG Lacoste Air-Sea II型。数据以.ENV和.DAT格式文件存储于澳大利亚联邦科学与工业研究组织（CSIRO）。本数据集共计64个原始数据文件，总容量为514 MB。本次航次未开展码头联测，重力数据在本次霍巴特往返全程航次中全程采集。

本数据集未进行任何数据处理。

本数据集的补充信息详见GSM数据采集与处理报告。