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/02836842-3d46-46e0-a816-bd2f407f3fb3 SEISMIC SURFACE WAVES Date=2013-03-07 User Id=tbs1979 Entity=BroaderRelation Operation=DELETE User Note=Move Concepts System Note=delete broader relation Old Value=SEISMIC SURFACE WAVES [02836842-3d46-46e0-a816-bd2f407f3fb3,63203] - EARTHQUAKES [601d36fc-8171-475c-a1c5-84802aecb77e,62763] Date=2013-03-07 User Id=tbs1979 Entity=BroaderRelation Operation=INSERT User Note=Move Concepts System Note=add broader relation New Value=SEISMIC SURFACE WAVES [02836842-3d46-46e0-a816-bd2f407f3fb3,63203] - SEISMIC PROFILE [688191e0-c70c-4cf9-a5b6-a26a2bca7198,63201] Date=2017-03-10 User Id=tstevens Entity=Definition Operation=UPDATE Field=reference System Note=update Definition New Value=USGS Date=2017-03-10 User Id=tstevens Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Pertaining to the measurement of shockwaves on the surface of the Earth, either generated through an earthquake, or a man-made source. New Value=Pertaining to the measurement of shock-waves on the surface of the Earth, either generated through an earthquake, or a man-made source. Date=2017-03-10 User Id=tstevens Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Pertaining to the measurement of shockwaves on the surface of the Earth, either generated through an earthquake, or a man-made source. New Value=Pertaining to the measurement of shockwaves on the surface of the Earth, either generated through an earthquake, or a man-made source. Pertaining to the measurement of shock-waves on the surface of the Earth, either generated through an earthquake, or a man-made source. 2017-03-10 11:15:55.0