Low frequency northeastern Pacific blue whale calls were recorded near the northern East Pacific Rise 9 degrees N latitude on 25 ocean-bottom-mounted hydrophones and three-component seismometers during a 5-day period November , Call types A, B, C, and D were identified; the most common pattern being approximately s repetitions of the AB sequence that, for any individual whale, persisted for hours. Up to eight individual blue whales were recorded near enough to the instruments to determine their locations and were tracked call-by-call using the B components of the calls and a Bayesian inversion procedure. For four of these eight whales, the entire call sequences and swim tracks were determined for h periods; the other whales were tracked for much shorter periods. The authors examined the whales' locations and call characteristics with respect to the periods of airgun activity. Although the data do not permit a thorough investigation of behavioral responses, no correlation in vocalization or movement with airgun activity was observed.
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Last Tuesday, three Stanford staff members were honored as recipients of the Amy J. The distinction, which recognizes Stanford staff members who have demonstrated exceptional dedication to their work and support for their colleagues, was established in in memory of associate Vice President for administrative services and facilities Amy J. Blue passed away after battling brain cancer in , a month before her 45th birthday.