just found this (Interesting)

[MakoMike]

Originally Posted by RIROCKHOUND

When you are collecting bathymetry data with a multi-beam or other similar technology, you typically run parallel lines w/ a spacing at some multiple of water depth (depending on the equipment being used). Then you typically run tie-lines perpendicular at a wider spacing to make sure your accuracy is good in both directions.

At the center, an area of the data swath known as the 'nadir' there is often a slightly deeper or shallower area that is impacted by the angle of the sonar beams and can be tough to process, espeically with older systems and software. Similar issues can arise with the edges of survey lines (at the edge of the data swath being collected), however this looks like a nadir issue to me.

Wow. look at the brain in Bryan!

[RIROCKHOUND]

Originally Posted by MakoMike

Wow. look at the brain in Bryan!

I've collected a mile or two of data in my time....

Looking at the Width of each of the 'roads' I bet those are individual, unprocessed or poorly processed data. Given the water depth, this could be the nadir depth I mentioned before, or just poorly interpolated signle lines. either way, artifact of surveying, not man or aliens.

if you pan your view in Google Earth east, zoomed at an eye elevation of about 350km you'll see other similar survey artifacts.

that, and given the water depth, this area has not been above sea-level since this portion of the ocean crust formed in the mesozoic.

[Raven]

Originally Posted by RIROCKHOUND

.

that, and given the water depth, this area has not been above sea-level since this portion of the ocean crust formed in the mesozoic.

that's so prehistoric sounding

[MakoMike]

Originally Posted by Raven

that's so prehistoric sounding

Lets leave Bryan's fishing skills out of this.