project azorianとは 意味・読み方・使い方

In April 1968, Soviet Pacific Fleet surface and air assets were observed conducting a surge deployment to the North Pacific which involved some unusual search operations. The activity was evaluated by U.S. Navy Intelligence as a possible reaction to the loss of a Soviet submarine. Soviet surface ship searches were centered on a location known to be associated with Soviet GOLF II Class SSB strategic ballistic missile diesel submarine patrol routes. These submarines carried three nuclear missiles in an extended sail/conning tower and routinely deployed to within missile range of the U.S. west coast. The American SOSUS (Sea Spider) hydrophone network in the northern Pacific was tasked with reviewing its recordings in the hopes of detecting an implosion (or explosion) related to such a loss. NavFac Point Sur, south of Monterey California, was able to isolate a sonic signature on its low frequency array (LOFAR) recordings of an implosion event that had occurred on March 8, 1968 (for which they received a Meritorious Unit Commendation in 1969). Using NavFac Point Sur's date and time of the event, NavFac Adak and the U.S. west coast NavFacs were also able to isolate the acoustic event. With five SOSUS lines-of-bearing, Navy Intelligence was able to localize the site of the K-129 wreck to the vicinity of 40º N latitude and 180º longitude (International Date Line).