RV Investigator Voyage IN2025_E01 SBP29 Sub-bottom Profiler Data

This record describes sub bottom profiler data collected on RV Investigator voyage IN2025_E01, Trials and calibrations, which departed Hobart on the 19th February 2025 and returned to Hobart on the 1st March, 2025.The Kongsberg SBP29 (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 SBP29 was logged sporadically during the trials voyage and was frequently turned off for calibration of other acoustic systems.Data are stored in *.raw (33 files 489 MB) raw and *.seg (32 files 482 MB) segy formats at CSIRO (total 971 MB).The segy format data had a real time processing stream applied, which applies gain, a gain correction, matched filter with replica shaping 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）航次IN2025_E01采集的浅地层剖面仪（sub bottom profiler）数据，该航次为试验与校准航次，于2025年2月19日从霍巴特启航，2025年3月1日返回霍巴特。本次数据由康斯伯格SBP29浅地层剖面仪采集，包含海底下方不同沉积界面的镜面反射信号；SBP120的角分辨率为3°×3°。所用回声测深仪的扫频范围为2.5~7 kHz。在本次试验航次中，SBP29仅间歇性进行数据记录，且常因其他声学系统的校准工作而停机。数据存储于联邦科学与工业研究组织（CSIRO），格式包括*.raw原始格式（33个文件，总大小489 MB）与*.seg SEG-Y格式（32个文件，总大小482 MB），总存储容量达971 MB。其中SEG-Y格式数据已应用实时处理流程，包含增益处理、增益校正、带副本整形的匹配滤波以及时变增益。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，另有额外数据产品可按需申请。