RV Investigator Voyage IN2020_V08 SBP120 Sub-bottom Profiler Data

This record describes sub bottom profiler data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2020_V08, titled "SOLACE - Southern Ocean Large Areal Carbon Export: quantifying carbon sequestration in subpolar and polar waters." The voyage took place between December 5, 2020 and January 16, 2021 departing from Hobart (TAS) 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 sporadically for the extent of the voyage.

Data are stored in *.raw (1141 files 2.5 GB) raw and *.seg (1140 files 2.5 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

本记录描述了从海洋国家设施（Marine National Facility, MNF）“调查者号（RV Investigator）”IN2020_V08航次采集的海底剖面仪（sub bottom profiler）数据，该航次主题为“SOLACE——南大洋大区域碳输出：量化亚极地与极地水域的碳固存”。本航次于2020年12月5日至2021年1月16日开展，往返均始于并终于塔斯马尼亚州霍巴特（Hobart, TAS）。
本次数据采集使用Kongsberg SBP120型海底剖面仪，该设备可获取包含海底下方不同沉积物界面镜面反射信号的数据集，其角分辨率为3°×3°。
该回声测深仪的扫频范围为2.5 kHz至7 kHz。在整个航次期间，SBP120均为间歇性记录状态。
数据以两种格式存储于联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）：*.raw原始格式（含1141个文件，总容量2.5 GB）与*.seg的SEG-Y格式（含1140个文件，总容量2.5 GB）。
SEG-Y格式的数据经过了实时处理流程，该流程包含增益调整、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。
有关本数据集的更多详细信息可查阅《GSM数据采集与处理报告》。如需获取额外数据产品，可提出申请。