RV Investigator Voyage IN2016_V04 SBP120 Sub-bottom Profiler Data

This record describes sub bottom profiler data collected on RV Investigator voyage IN2016_V04, 'Influence of temperature and nutrient supply on the biogeochemical function and diversity of ocean microbes' which departed Sydney on the 31-Aug-2016 and returned to Brisbane on the 23-Sept-2016.

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 for the extent of the voyage.

Data are stored in *.raw (79 files 4.98 GB) raw and *.seg (80 files 4.96 GB) segy formats at CSIRO.
The segy format data has 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.

本记录描述的是“调查者号（RV Investigator）”科考船IN2016_V04航次采集的海底剖面仪（sub bottom profiler）数据，该航次的科考主题为“温度与营养盐供给对海洋微生物生物地球化学功能及多样性的影响”，于2016年8月31日从悉尼起航，2016年9月23日返回布里斯班。

本数据集采用康斯伯格（Kongsberg）SBP120型海底剖面仪采集，该设备可获取海底下方不同沉积物界面处的镜面反射波数据，其角分辨率为3°×3°。该设备的回声测深模块扫频范围为2.5 kHz至7 kHz，SBP120在本次航次全程均完成了数据日志记录。

数据以.raw原始格式（79个文件，总容量4.98 GB）与.seg格式的SEG-Y数据（80个文件，总容量4.96 GB）存储于CSIRO。其中SEG-Y格式数据已应用实时处理流程，该流程包含增益处理、增益校正、带副本整形的匹配滤波，以及瞬时振幅属性计算与时变增益操作。

本数据集的补充信息详见GSM数据采集与处理报告，额外数据产品可根据需求提供。