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New Estimates Say Earth's Oceans Smaller Than Once Believed

Velcroman1 writes with this snippet from Fox News: "Using lead weights and depth sounders, scientists have made surprisingly accurate estimates of the ocean's depths in the past. Now, with satellites and radar, researchers have pinned down a more accurate answer to that age-old query: How deep is the ocean? And how big? As long ago as 1888, John Murray dangled lead weights from a rope off a ship to calculate the ocean's volume — the product of area and mean ocean depth. Using satellite data, researchers from the Woods Hole Oceanographic Institute set out to more accurately answer that question — and found out that it's 320 million cubic miles. And despite miles-deep abysses like the Mariana Trench, the ocean's mean depth is just 2.29 miles, thanks to the varied and bumpy ocean floor."

3 of 263 comments (clear)

  1. How about some metric figures? by Edisman · · Score: 5, Informative

    For all you metric fans out there, the volume 320 × 10^6 cubic miles is approx. 133.4 × 10^7 cubic km with an average depth of 3.69 km.

  2. Re:Evaporation? by Vinegar+Joe · · Score: 5, Informative

    earth will become one giant desert

    Raise worms
    Produce spice
    Profit!

    --
    "The average reporter we talk to is 27 years old......They literally know nothing." - Ben Rhodes
  3. Re:Paging Captain Nemo by DamienNightbane · · Score: 5, Informative

    The title "20,000 Leagues Under the Sea" refers to the distance traveled, not the depth.