Our
Beautiful World
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The 2004 Submarine Ring of Fire exploration by NOAA,
was a follow-up to last years trip
along the Mariana Arc volcanic chain. The 2003 expedition surveyed more than 50 submarine volcanoes and discovered that 10 of them had active hydrothermal systems. Sea-floor hot springs are well known along the mid-ocean ridge system, because they were first discovered more than 25 years ago. In comparison, the hydrothermal systems of submarine volcanoes along island arcs are relatively unexplored, especially in terms of modern exploration tools. Preliminary work at a few sea-floor sites and analyses of samples from last year indicate that island arc hydrothermal systems are probably very different in character (e.g., morphology, eruptive style, chemical composition) from those found along the mid-ocean ridge. This expedition was one of the first comprehensive investigations of this type of submarine volcanic environment. |
This
report is based on the "Submarine Ring of Fire 2004: Mariana
Arc Expedition "
National Oceanic and Atmospheric Administration | U.S. Department of Commerce http://oceanexplorer.noaa.gov/explorations/04fire/logs/summary/summary.html |
ANIMALS over 250 |
BIRDS over 500 |
FLOWERS over 225 |