Huge Reservoir Discovered Beneath Asia
anthemaniac writes "Seismic observations reveal a huge reservoir of water in Earth's mantle beneath Asia. It's actually rock saturated with water, but it's an ocean's worth of water ... as much as is in the whole Arctic Ocean. How did it get there? A slab of water-laden crust sank, and the water evaporated out when it was heated, and then it was trapped, the thinking goes. The discovery fits neatly with the region's heavy seismic activity and fits neatly with the idea that the planet's moving crustal plates are lubricated with water."
The volume in the article doesnt match your math, but you're basically correct. Most natural sea water has a specific gravity of about 1.024-1.025. You can drop it as low as 1.009 without any real damage to fish, but invertebrates die pretty quickly if you do that (great way to treat saltwater fish for parasites, the lower SG of freshwater causes osmotic shock and they die).
Mooniacs for iOS and Android