Five Deeps Expedition to map the Tonga Trench (Pacific Ocean)
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The Tonga Trench was surveyed with a Kongsberg EM 124 gondola-mounted to the hull of the 225-foot DSSV Pressure Drop. The survey was conducted over the course of two weeks – May 29 – June 6, 2019. The data meet the requirements for IHO Special Order standards.
创建时间：
2020-10-01
