RV Investigator Voyage IN2021_E03 SBP120 Sub-bottom Profiler Data

This record describes sub-bottom profiler data collected on RV Investigator voyage IN2021_E03, to calibrate and commission new, upgraded and existing critical equipment (with sea trials and personnel training) onboard RV Investigator for upcoming voyages in the 2021 schedule and beyond. The primary objectives were testing the Giant Piston and Kasten Corer as well as the Deep Towed Camera. The voyage departed Hobart PW04 on the 30/11/2021 and returned to Hobart PW04 on the 08/12/2021.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.Data are stored in *.raw (706 files 6.13 GB) raw and *.seg (703 files 6.14 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

本记录描述了在“调查者号”科考船（RV Investigator）IN2021_E03航次期间采集的浅地层剖面仪（sub-bottom profiler）数据，旨在为该科考船2021年度及后续航次校准、调试新增、升级及现有关键设备（含海试与人员培训）。本次航次的主要目标是测试巨型活塞取样器、箱式取样器及深拖相机。航次于2021年11月30日从霍巴特PW04码头启航，同年12月8日返回该码头。

研究使用康士伯SBP120浅地层剖面仪（sub-bottom profiler）采集数据，该数据包含海底以下不同沉积物界面的镜面反射信息。SBP120的角分辨率为3°×3°。该回声测深仪的扫频范围为2.5至7 kHz。SBP120在整个航次期间持续记录数据。

数据以*.raw（706个文件，共6.13 GB）和*.seg（703个文件，共6.14 GB）两种segy格式存储于CSIRO。segy格式的数据经过实时处理流处理，包括增益、增益校正、带复制整形的匹配滤波、瞬时振幅属性计算及时变增益等步骤。

关于本数据集的更多信息详见GSM数据采集与处理报告。其他数据产品可按需索取。