continues: "In this case, however, what users are seeing is an artifact of the data collection process. Bathymetric (or sea-floor terrain) data is often collected from boats using sonar to take measurements of the sea-floor.

'The lines reflect the path of the boat as it gathers the data. The fact that there are blank spots between each of these lines is a sign of how little we really know about the world's oceans."

wow this is fascinating, thanks for sharing cakebelly

It's a pleasure (posted first by Wilhelm); as the article mentions - it was quite exciting for a few hours.

That's what is so fun about clipmarks, all the information, dis-information, good news turned not so good or sometimes better. Even the petty squabbles make this an interesting site.