RV Investigator Voyage IN2024_V02 SBP120 Sub-bottom Profiler Data

This record describes sub bottom profiler data collected on RV Investigator voyage IN2024_V02, "SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania." The voyage took place between March 31, 2024 and April 19, 2024 (AEST), departing from Hobart and returning to Hobart.

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 except when stopped on station and following our standard cetacean observation and reporting guidelines while transiting through Marine Parks.

Data are stored in *.raw (198 files 4.26 GB) raw and *.seg (197 files 4.22 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"调查者"号（RV Investigator）科考船航次IN2024_V02所采集的海底剖面仪（sub bottom profiler）数据，该航次主题为"SOTS：塔斯马尼亚岛西南海域用于气候与碳循环研究的南大洋时间序列自动锚系系统"。本次航次于2024年3月31日至2024年4月19日（澳大利亚东部标准时间）开展，从霍巴特出发并最终返回霍巴特。本次使用康斯伯格（Kongsberg）SBP120型海底剖面仪采集数据，所获数据包含海底下方不同沉积物界面的镜面反射信号。该SBP120的角分辨率为3°×3°。该回声测深仪的扫频范围为2.5 kHz至7 kHz。本次航次全程持续记录SBP120数据，仅在定点作业以及穿越海洋公园期间遵循标准鲸类观测与报告规程暂停记录。数据以*.raw（198个文件，总容量4.26 GB）原始格式与*.seg（197个文件，总容量4.22 GB）SEG-Y格式存储于澳大利亚联邦科学与工业研究组织（CSIRO）。SEG-Y格式数据已应用实时处理流程，包括增益调整、增益校正、带复制品整形的匹配滤波，以及瞬时振幅属性计算与时变增益处理。本数据集的补充信息详见GSM数据采集与处理报告。如需获取额外数据产品，可另行提出申请。