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More science thatn you can burn a stick with.

Three million underwater volcanoes & Unrecognized Underwater Volcanic Activity - can.general | Google Groups

Originally Posted by John Hillier

Hillier then extrapolated the data to estimate how
many volcanoes exist beyond the areas the research
vessels sounded out.


If you've read "Not by Fire but by Ice" then you
understand how important this is. When I
started writing this book, scientists thought
there were 10,000 underwater volcanoes in
the entire world.


Now they think there are three million!


As I've been saying all along, it's not global
warming, it's ocean warming ((heated by
underwater volcanoes), and it's leading us
into the next ice age.

Global distribution of seamounts from ship-track bathymetry data

Originally Posted by Hillier,Watts

Abstract
The distribution of submarine volcanoes, or seamounts, reflects melting within the Earth and how the magma generated ascends through the overlying lithosphere. Globally (±60° latitude), we use bathymetry data acquired along 39.5 × 106 km of ship tracks to find 201,055 probable seamounts, an order of magnitude more than previous counts across a wider height-range (0.1 < h < 6.7 km). In the North Pacific, seamounts' spatial distribution substantially reflects ridge-crest conditions, variable on timescales of 10 s of Ma and along-ridge distances of ∼1,000 km, rather than intra-plate hot-spot related volcanic activity. In the Atlantic, volcano numbers decrease, somewhat counter-intuitively, towards Iceland suggesting that abundant under-ridge melt may deter the formation of isolated volcanoes. Neither previously used empirical curve (exponential or power-law) describes the true size-frequency distribution of seamounts. Nevertheless, we predict 39 ± 1 × 103 large seamounts (h > 1 km), implying that ∼24,000 (60%) remain to be discovered.

Received 2 March 2007; accepted 31 May 2007; published 6 July 2007.