Sentry processed EM2040 near-bottom bathymetry grids (netCDF format) from the East Pacific Rise, RR2106 (2021)

Near-bottom swath bathymetry data was collected with a Simrad EM2040 multibeam sonar system on AUV Sentry dives during PLUME RAIDERS cruise RR2106 in 2021 at 16.5°-18° S on the Southern East Pacific Rise (investigators Chris German, Joseph Resing, Scott White). The data was processed, navigation-adjusted, cleaned, and gridded with a 1m horizontal resolution. The files are in GMT-compatible netCDF grid format and were generated as part of the projects called Finding hydrothermal chimneys along the southern East Pacific Rise with machine learning approaches to AUV-based sonar data; and, Are Low-Temperature Hydrothermal Vents an Important but Overlooked Source of Stabilized Dissolved Iron to the Ocean? Funding was provided through NSF grants OCE20-06265, OCE17-55571, and OCE17-56402.

近底条带测深数据由Simrad EM2040多波束声呐系统（Simrad EM2040 multibeam sonar system）搭载于“塞特”号自主水下航行器（Autonomous Underwater Vehicle，AUV）的下潜作业中采集，采集工作于2021年PLUME RAIDERS科考航次RR2106期间开展，作业区域位于东太平洋南隆16.5°S至18°S海域，调查负责人为克里斯·德国（Chris German）、约瑟夫·雷辛（Joseph Resing）与斯科特·怀特（Scott White）。该数据集已完成数据处理、导航校正、异常值清洗，并以1米水平分辨率生成网格化格网数据。数据文件采用兼容通用制图工具（Generic Mapping Tools，GMT）的网络通用数据格式（Network Common Data Form，netCDF）格网格式存储。本数据集为两项科研项目的产出成果：其一为《基于机器学习方法处理自主水下航行器声呐数据以勘探东太平洋南隆热液烟囱》，其二为《低温热液喷口是否为海洋中稳定溶解态铁的重要却被忽视的来源》。本研究由美国国家科学基金会（National Science Foundation，NSF）的OCE20-06265、OCE17-55571及OCE17-56402项目资助。