5 ms·
That's an exponential increase in resolution, but it's also amazing how the gravity-derived maps fit in so well with the sonar-derived ones. That's some serious
by astrodust 10y ago
That's an exponential increase in resolution, but it's also amazing how the gravity-derived maps fit in so well with the sonar-derived ones. That's some serious validation of the gravity approach, as limited as it is.
- wiredfool 10y agoGiven that about 10% of the ocean has been mapped like this, I'd bet that portion has been used as a calibration for the gravity based dataset.
- jofer 10y agoThe gravity-based methods require the ship track data as well -- they're not fully independent methods. (i.e. not only are they calibrated to it, ship-track bathymetry is actually half of the input data for gravity-derived bathymetry.) It's still really quite amazing how well it matches in an area that's pretty far from dense ship-track bathymetry data.