This project will directly support the National Strategy for Ocean Mapping, Exploring, and Characterizing the United States Exclusive Economic Zone by contributing to mapping the deep waters of the US EEZ along with the Biden-Harris administration’s executive order on tackling the climate crisis at home and abroad (30x30) the GEBCO-Nippon Foundation’s Seabed 2030 program and the United Nations’ Decade for Ocean Science for Sustainable Development. Discoveries and data revealed on this expedition will inform planning for ROV dives on a follow-on expedition examining areas of prime deep sea coral and sponge habitat. This Final Second Supplemental Environmental Impact. Probable cause: Engine failure on final approach. Johnston Atoll Chemical Agent Disposal System (JACADS) SciTech Connect. There were no casualties but the aircraft was damaged beyond repair. The airplane stalled and crashed onto a reef located 1,1 mile short of runway threshold. In 2014, the boundaries of PRIMNM expanded encompassing a large seafloor area that was unmapped. The crew was returning to the Johnston Atoll Airport following a maritime patrol mission when, on final approach, an engine failed. The Marshall Islands are two chains of 29 coral atolls in the middle of the Pacific Ocean between Papua New Guinea and Hawaii.

The main objective of this expedition will be to collect high-resolution seafloor bathymetry data where it has not been previously collected. During the 1940s and 50s the US detonated 67 nuclear bombs on, in and above the Marshall Islands as part of its Cold War nuclear testing programme. Johnston Atoll, one of the most isolated atolls globally, is located in the central Pacific Ocean, between the Hawaiian Islands and the Line Islands. Understand The atoll is closed to the public and travel to the island is strictly forbidden. This 24-day expedition will involve multibeam and sub-bottom profiler mapping to reveal the seafloor within the Johnston Atoll Unit of Pacific Remote Island Marine National Monument (PRIMNM). Johnston Atoll is in Polynesia, 717 NM (1328 km) southwest of Hawaii, about one-third of the way to the Marshall Islands.

Johnson atoll