RV Investigator Voyage IN2023_V01 SBP120 Sub-bottom Profiler Data

This record describes sub bottom profiler data collected on RV Investigator voyage IN2023_V01, titled "Antarctic Bottom Water Production in the past: Records from marine sediments, Cape Darnley, East Antarctica". The voyage took place between 25th January, 2023 and 2nd March, 2023 departing from Henderson's (WA) and arriving in Hobart (TAS).The Kongsberg SBP120 (sub bottom profiler) was used to acquire data containing the specular reflections at different sediment interfaces below the seafloor. The SBP120 provides a 3° by 3° angular resolution.The echosounder's frequency sweep range is from 2.5 to 7 kHz. The SBP120 was logged continuously for the extent of the voyage.Data are stored in *.raw (2,284 files 41.4 GB) raw and *.seg (1,078 files 20.8 GB) segy formats at CSIRO.The segy format data had a real time processing stream applied, which applies gain, a gain correction, matched filter with replica shaping, an attribute calculation for instantaneous amplitude and time variable gain.Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request

本数据集记录了"探索者号"研究船（RV Investigator）IN2023_V01航次采集的浅地层剖面仪（sub bottom profiler）数据，项目标题为《南极底层水过去的形成：来自东南极达恩利角海洋沉积物的记录》。该航次于2023年1月25日至2023年3月2日期间执行，从西澳大利亚州亨德森港出发，最终抵达塔斯马尼亚州霍巴特港。本次数据采集采用康斯伯格（Kongsberg）SBP120浅地层剖面仪，该设备可获取海底下方不同沉积物界面的镜面反射信号。SBP120的角分辨率为3°×3°；配套回声测深仪的扫频范围为2.5 kHz至7 kHz。本航次全程连续记录该设备的采集数据。数据以两种格式存储于澳大利亚联邦科学与工业研究组织（CSIRO）：*.raw原始格式（共2284个文件，总容量41.4 GB）与*.seg SEG-Y格式（共1078个文件，总容量20.8 GB）。其中SEG-Y格式数据经过实时处理流程处理，具体包含增益调整、增益校正、带副本整形的匹配滤波、瞬时振幅属性计算以及时变增益处理。本数据集的更多详细信息可参考GSM数据采集与处理报告，额外的数据产品可根据申请提供。