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. These artifacts are parallel to survey ship tracks

Image ID: theb3859, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Location: South of Columbia River entrance
Photo Date: 1989
Credit: Captain Albert E. Theberge, NOAA Corps (ret.)

Category: Charting/Soundings/Bathymetry/Multi-Beam/

• High Resolution Photo Available