https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.7 2026-04-15T10:53:30.610Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/74ed1690-968e-444c-8a31-7b8344a2aad3 TERRAIN ELEVATION Date=2013-08-05 User Id=tbs1979 Entity=NarrowerRelation Operation=INSERT User Note=Move Concepts System Note=add narrower relation New Value=TERRAIN ELEVATION [74ed1690-968e-444c-8a31-7b8344a2aad3,86767] - TOPOGRAPHICAL RELIEF [f7d2e34a-c5c2-4c21-9132-2472620dbda1,85491] Date=2023-05-11 User Id=sritz Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=TERRAIN ELEVATION [74ed1690-968e-444c-8a31-7b8344a2aad3,1304264] - Digital Surface Model _DSM_ [a1f5c621-7b45-4889-8d02-b5ca6bf86c08,1306135] Date=2013-08-16 User Id=tbs1979 Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=The verical distance from mean sea level to a point or object on the earth's surface. New Value=The vertical distance from mean sea level to a point or object on the Earth's surface. Date=2013-08-16 User Id=tbs1979 Entity=Definition Operation=UPDATE Field=reference System Note=update Definition Old Value=Dictionary of Geological Terms, American Geological Institute, 1984. New Value=Dictionary of Geological Terms, American Geological Institute Date=2013-08-05 User Id=tbs1979 Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=TERRAIN ELEVATION [74ed1690-968e-444c-8a31-7b8344a2aad3,86767] - DIGITAL ELEVATION/TERRAIN MODEL (DEM) [395372ad-2883-4b6a-a481-6383a310ca47,105279] Date=2017-09-22 User Id=aaleman Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=TERRAIN ELEVATION [74ed1690-968e-444c-8a31-7b8344a2aad3,86767] - BED ELEVATION [05e52e24-b9ac-42cf-bdf9-1dcad56900e8,310211] Date=2013-08-05 User Id=tbs1979 Entity=NarrowerRelation Operation=INSERT User Note=Move Concepts System Note=add narrower relation New Value=TERRAIN ELEVATION [74ed1690-968e-444c-8a31-7b8344a2aad3,86767] - CONTOURS [120f9132-a756-4f6f-a74c-78e94dfcd2a1,86765] The vertical distance from mean sea level to a point or object on the Earth's surface. 2023-05-11 12:43:13.0