RV Investigator Voyage IN2023_V05 SBP120 Sub-bottom Profiler Data

This record describes sub bottom profiler data collected on RV Investigator voyage IN2023_V05, titled "Untangling the causes of change over 25 years in the southeast marine ecosystem (SEA-MES Voyage 1). The voyage took place between June 28, 2023 and July 30, 2023 (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/sporadically] for the extent of the voyage.Data are stored in *.raw ( 2,896 files 65.7 GB) raw and *.seg (2,871 files 65.2 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「探索者」号（RV Investigator）科考航次IN2023_V05所采集的浅地层剖面仪（sub bottom profiler）数据，本次航次主题为「厘清东南海域生态系统25年变化的成因（SEA-MES航次1）」。本次航次于2023年6月28日至2023年7月30日（澳大利亚东部标准时间，AEST）开展，从霍巴特启航并返回霍巴特。
本次数据采用Kongsberg SBP120浅地层剖面仪采集，获取了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°，配套回声测深仪的扫频范围为2.5~7 kHz。SBP120在整个航次期间以连续/间断模式进行数据记录。
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格式原始数据共2896个文件，总容量65.7 GB；*.seg格式的SEG-Y数据共2871个文件，总容量65.2 GB。
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。
本数据集的补充信息详见GSM数据采集与处理报告。额外的数据产品可按需申请获取。