3-D image from NOAA Exclusive Economic Zone Mapping Project.Astoria Channel - to the west of Oregon continental slope.Note small ridge-like structures running left to right in image.These are artifacts of sounding system and common on flat bottom.The
4/8/2019 11:48:17 AM
Date: 1989
Credit: Captain Albert E. Theberge, NOAA Corps (ret.)
Location: South of Columbia River entrance
Subject: Charting
Subject: Soundings
Subject: Bathymetry
Subject: Multi-Beam