According to this recent screenshot taken from the National Data Buoy Center (ndbc.noaa.gov), a number of Tsunami early warning buoys have been, at least temporarily, deactivated. The stations marked by a yellow colored diamond shaped icon are actively monitoring for possible tsunamis, while stations marked with a red diamond are not actively monitoring ocean conditions.
Source Article from http://feedproxy.google.com/~r/AscensionEarth2012/~3/pTZhmWXCv_A/have-tsunami-early-warning-buoys-been.html
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