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75158 - CTD rosette being either launched or recovered.
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CTD rosette being either launched or recovered.
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CTD rosette being either launched or recovered.
CTD rosette being either launched or recovered.
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75158
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Linder, Christopher
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CTD rosette being either launched or recovered.
CTD rosette being either launched or recovered.
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09/11/2007
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graphics/agave2/cl_20070705_agave07_ctd_003.jpg
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CTDs also can be loaded with sensors to measure particles and certain chemicals in seawater, which are both telltale signs of fluids that spew out of hydrothermal vents on the seafloor. The CTD is the first tool in the scientists' toolbox to look for plumes of hydrothermal fluids. Once they find a plume, scientists can then track the plumes back to the vents that generated them. Caption from Oceanus magazine, Vol. 46, No. 2, Pg. 22: For oceanographers, the thermometer and smoke detector hanging down is called a CTD, which measures conductivity (salinity) and temperature at various depths. This tried-and-true instrument is scientists' first tool to look for hydrothermal plumes. The CTD is lowered all the way to the bottom and pulled up again while it is also towed by the ship, which researchers call a "tow-yo." CTD sensors detect slightly warmer temperatures, mineral particles, and certain chemicals–all telltale signs that the CTD has passed through a plume. "It's hit or miss," said University of Texas marine geochemist Hedy Edmonds, who headed CTD operations on the expedition. Still, with a little luck and a lot of experience, over many CTD casts, scientists constructed a map (right, not shown here) of water over the seafloor, showing areas (yellow and red) with suspected plume fluids.
CTDs also can be loaded with sensors to measure particles and certain chemicals in seawater, which are both telltale signs of fluids that spew out of hydrothermal vents on the seafloor. The CTD is the first tool in the scientists' toolbox to look for plumes of hydrothermal fluids. Once they find a plume, scientists can then track the plumes back to the vents that generated them.
Caption from Oceanus magazine, Vol. 46, No. 2, Pg. 22:
For oceanographers, the thermometer and smoke detector hanging down is called a CTD, which measures conductivity (salinity) and temperature at various depths. This tried-and-true instrument is scientists' first tool to look for hydrothermal plumes. The CTD is lowered all the way to the bottom and pulled up again while it is also towed by the ship, which researchers call a "tow-yo." CTD sensors detect slightly warmer temperatures, mineral particles, and certain chemicals–all telltale signs that the CTD has passed through a plume. "It's hit or miss," said University of Texas marine geochemist Hedy Edmonds, who headed CTD operations on the expedition. Still, with a little luck and a lot of experience, over many CTD casts, scientists constructed a map (right, not shown here) of water over the seafloor, showing areas (yellow and red) with suspected plume fluids.
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cchandler: EGU poster cchandler: presentation at OCB workshop July 2010 cchandler: Q2O meeting presentation rhurst: exhibit jcanavan: Oceanus magazine, Vol. 46, No. 2, Pg. 22
cchandler: EGU poster
cchandler: presentation at OCB workshop July 2010
cchandler: Q2O meeting presentation
rhurst: exhibit
jcanavan: Oceanus magazine, Vol. 46, No. 2, Pg. 22
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