https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.9 2026-05-13T10:52:13.516Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/8e5371ad-4e70-48cf-9109-bfe995b7230c 2021-10-19 MARINE SUBMERGED DEBRIS Date=2021-10-19 User Id=tstevens Entity=BroaderRelation Operation=INSERT User Note=Insert Concept System Note=add broader relation New Value=MARINE SUBMERGED DEBRIS [8e5371ad-4e70-48cf-9109-bfe995b7230c,778196] - MARINE ENVIRONMENT MONITORING [ca154e02-a226-4cc7-8e4a-4474e7eb1eeb,775225] Date=2021-10-19 User Id=tstevens Entity=Definition Operation=INSERT System Note=insert Definition New Value=id: null text: Debris not visible on the surface, including sunken vessels, trees, and other objects, typically generated by large-scale disasters such as tsunamis and tropical cyclones. language code: en Debris not visible on the surface, including sunken vessels, trees, and other objects, typically generated by large-scale disasters such as tsunamis and tropical cyclones. 2021-10-19 09:05:37.0