RV Investigator Voyage IN2023_V07 SBP120 Sub-bottom Profiler Data

This record describes multibeam echosounder data collected on RV Investigator voyage IN2023_V07, [FOCUS] which departed Hobart on the 15/11/23 and returned to Hobart on the 20/12/23.

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 (231 files 4.87 GB) raw and *.seg (236 files 4.83 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）”科考航次IN2023_V07（[聚焦（FOCUS）]）所采集的多波束回声测深数据，该航次于2023年11月15日从霍巴特港启航，于2023年12月20日返回霍巴特港。本次航次采用Kongsberg SBP120（浅地层剖面仪，sub bottom profiler）采集数据，该设备可获取海底下方不同沉积物界面的镜面反射信号，其角分辨率为3°×3°。该设备的扫频范围为2.5 kHz至7 kHz，且在整个航次期间仅间歇性记录数据。数据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原始格式文件共231个，总容量4.87 GB；*.seg格式文件共236个，总容量4.83 GB，该格式为行业标准的SEG-Y格式。SEG-Y格式数据经过实时处理流程处理，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。有关该数据集的更多详细信息可查阅《GSM数据采集与处理报告》，如需额外的数据产品，可另行提出申请。