https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.6 2026-03-19T10:41:57.720Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/instruments/c08fcc42-c060-4634-9ea8-1f5bf1a34c62 SIDE-SCAN SONAR SIDE-SCAN SONAR is a method of surveying the bottom of the oceanor other body of water to obtain detailed acoustic images,frequently used to locate debris likely form aircraft accidentsor shipwrecks; the acoustic beam is directed perpendicularly tothe direction of travel.