Study area, in red, for the Sabine River paleovalley study, northern Gulf of Mexico, USA출처 : Techniques in Archaeological Geology (Natural Science in Archaeology) (2nd) (2016) - 141page Acoustical profile and schematic view of sonar images produced by an acoustic sub-bottom profiler of a drowned paleochannel in 15 m water depth in the Gulf of Mexico. Sediment vibracore locations are indicated. T..