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所采集的浅地层剖面仪（sub bottom profiler）数据，本次航次主题为"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，AEST）开展，从霍巴特起航并返回霍巴特。本次数据采用康士伯（Kongsberg）SBP120型浅地层剖面仪采集，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°，其回声测深模块的扫频范围为2.5 kHz至7 kHz。本航次全程连续记录该设备数据，仅在站点停泊以及穿越海洋公园（Marine Parks）期间，需遵循标准鲸类观测与报告规程暂停采集。数据集存储于澳大利亚联邦科学与工业研究组织（CSIRO），包含两种格式：*.raw原始格式数据共198个文件，总容量4.26 GB；*.seg（SEG-Y格式）数据共197个文件，总容量4.22 GB。SEG-Y格式数据已应用实时处理流，具体处理流程包括增益调整、增益校正、带复本整形的匹配滤波、瞬时振幅属性计算以及时变增益处理。本数据集的更多补充信息可参阅GSM数据采集与处理报告。如有需求，可申请获取额外数据产品。