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Pt Sur - OAO
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Ocean Acoustic Observatory News

Observatory Log

  • August 2007: Meeting held to revitalize the Point Sur repair/recovery effort.
  • October 2006: Single hydrophone acoustic mooring deployed on Sur Ridge to continue marine mammal monitoring from Point Sur.  Data collection to continue through 2008.
  • November 2004: FY07 MILCON project was pulled due to reprioritized funding requirements due to warfighting.
  • September 2002: MILCON project request to be drafted to provide FY07 funding to repair TE building and cable landing
  • 13 August 2001: Seaward cable segment laid on bottom at 36 17.6191 N, 121 54.3070 W, with a bearing line of 252.
  • 11-13 August 2001:  M/V Independence at Pt Sur to conduct cable recovery & testing operations.  Recovered severed segments at the cable failure point, but unable to cut-back sufficient cable with remaining ship time to get to 'dry cable' on the seaward segment.  Insufficient funding to continue cable repair operations at this time.
  • 5 August 2001: USNS Navajo problems with mooring operations & positioning, unable to serve as an adequate platform for cable repair operations & departs area.
  • 3 August 2001: meeting at Pt Sur (UCT2, EFA-West, NPS) to initiate Phase II Cable repair effort
  • 9 July 2001: UCT2 Team on-site to perform survey dive operations in preparation for cable repair effort.
  • April 2001: array repair meeting held at Pt Hueneme, survey dive scheduled for July 2001
  • 27 January 2001: Array cable 100% severed
  • 30 November 2000: Electricians to Pt Sur to repair main circuit breakers, install UPS
  • 6 November 2000: Power fluctuations continue on site (90-110V measured during ~45 second period) - may be causing breaker reset to occur.
  • 24 August 2000: ONR funding received to begin cable repair planning efforts, repair scheduled for September 2001.
  • 22 August 2000: NPS single phone data archive machine - system disk failure, system returned to NPS for repair/replacement.
  • 27 July 2000: Research proposal submitted to ONR for array repair funds
  • 13 July 2000: High gain amplifier attenuation set to 65 dB (not enough signal getting to single-phone distribution amplifier to eliminate 60 Hz noise)
  • 7 April 2000: Continued array degradation/failure noted, digitizers rewired for fewer available phones. (now only 15% active)
  • 10 December 1999: Main breaker blew in building, reset
  • 12 November 1999: Navy UCT2 divers on site for cable repair survey operations (full repair funding not yet acquired)
  • 24 October 1999: New transformers installed, power restored to building
  • 8 September 1999: Electrical storm knocks out power to Pt. Sur, local area fires extend power outage
  • 30 August 1999: Funding transfered to Navy UCT2 for cable survey (scheduled for Nov 99)
  • 6 July 1999: PacBell installation of new telephone cable.
  • 15 June 1999: PacBell on-site inspecting conduit run. New cable to be scheduled soon.
  • 15 June 1999: Single phone collection system set to GPS accuracy (changed from NTP time).
  • 28 May 1999: US Navy Underwater Construction Team consulted for cable repair effort
  • 10 May 1999:
  • Contractors sought for cable survey/repair plan
  • 14 January 1999: UCSD/Scripps full array data acquisition begins
  • 12 January 1999: NPS SeaBee's cut existing telephone cable during trenching for new telephone cable burial, all phone systems lost.
  • January 1996: NPS begins daily collection of RAOFS and ATOC source signals.
  • October 1995: Headland reinforcement and concrete cap repair completed.
  • June 1995: CMR begins data collection for Nuclear Test Ban Treaty monitoring.
  • October 1994: Single hydrophone time-series declassified for Educational and Research Use.
  • June 1994: NPS Coastal Ocean Acoustic Center takes over management of Pt Sur array.
  • May 1994: UW/APL installation of high gain amplifiers
  • December 1993: NPS requests TE building/compound transfered to NPS.
  • September 1993: SOFAR and tomography signals declassified
  • June 1993: CNO endorses the establishment of the Ocean Acoustic Observatory
  • May 1993: MBARI ROV pin-poins the array cable fault location
  • March 1993: Array location and cable route declassified for Pt Sur.
  • March 1993: NPS requests access to NAVFAC PTSUR to establish prototype Ocean Acoustic Observatory.