RV Investigator Voyage IN2022_V02 Gravity Data

This record describes gravity data collected on RV Investigator voyage IN2022_V02, titled "Sedimentation at its extreme: how powerful are submarine caldera-forming eruptions (Kermadec arc)?" The voyage took place between March 15, 2022 and April 19, 2022 (AEST), departing from Hobart and returning to Hobart.The gravity meter instrument is a MicroG Lacoste Air-Sea II. Data are stored in .ENV and .DAT data files at CSIRO. The gravity meter was running for the duration of the voyage except for the period between 26-03-2022 05:00 and 29-03-2022 11:05 UTC when no data was acquired from any ship system as mandated and for a period of bad weather from 2022-04-12 18:01:50 until 2022-04-14 00:32:46 UTC. There are 70 files totaling 540 MB of raw data in this dataset. Wharf ties were undertaken prior to (13 March 2022) and after the voyage (19 April 2022) at the Hobart wharf using a Scintrex Autograv CG-5. Wharf tie data can be found in Hobart wharf_tie_2022_03_13.txt and Hobart wharf_tie_2022_04_19.txt, which is stored with the raw data. An Excel spreadsheet detailing the wharf tie metadata and associated waterline measurements is also stored with the raw 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IN2022_V02采集的重力数据，该航次主题为"极端沉积作用：海底破火山口喷发的威力几何（克马德克弧）？"。本次航次于2022年3月15日至2022年4月19日（澳大利亚东部标准时间，AEST）开展，从霍巴特起航并返回霍巴特。所用重力仪为MicroG Lacoste Air-Sea II型，数据以.ENV及.DAT格式存储于澳大利亚联邦科学与工业研究组织（CSIRO）。本航次全程均开启重力仪进行数据采集，仅两个时段未获取数据：一是协调世界时（UTC）2022年3月26日05:00至2022年3月29日11:05，此期间按要求未从任何船舶系统获取数据；二是UTC 2022年4月12日18:01:50至2022年4月14日00:32:46的恶劣天气时段。本数据集共计70个文件，原始数据总容量达540 MB。码头联测作业分别于航次前（2022年3月13日）与航次后（2022年4月19日）在霍巴特码头开展，所用设备为Scintrex Autograv CG-5型重力仪。码头联测数据存储于原始数据集中的Hobart wharf_tie_2022_03_13.txt与Hobart wharf_tie_2022_04_19.txt文件中。另有一份详述码头联测元数据及相关吃水测量数据的Excel电子表格，随原始数据一同存储。有关本数据集的更多信息，请参阅《GSM数据采集与处理报告》。