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BIODEEP MEETING (Venice, October 13-15 2003)

BIODEEP MEETING (Venice, October 13-15 2003). Problems experienced during 2001 cruise. Unreliable performance in high pressure (>2500 mwd) of SCIPACK/SCISKID umbilical cable  some deployments aborted Failure of MODUS thrusters  detailed surveys made with extreme difficulty

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BIODEEP MEETING (Venice, October 13-15 2003)

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  1. BIODEEP MEETING(Venice, October 13-15 2003)

  2. Problems experienced during 2001 cruise • Unreliable performance in high pressure (>2500 mwd) of SCIPACK/SCISKID umbilical cable  some deployments aborted • Failure of MODUS thrusters  detailed surveys made with extreme difficulty • Failure to some components  STAND-BY • Insufficient quality of the video documentation system  bad images taken

  3. Remedial actions • New SCIPACK/SCISKID umbilical cables manufactured and tested • 3 lengths now available: 10, 25 and 200 m

  4. Remedial actions • All failed components repaired and/or replaced • SCIPACK TV camera • SCIPACK altimeter

  5. Thrusters • The electronics of all thrusters have been updated by the manufacturer Tecnadyne and became more reliable. • The entire MODUS system has been tested before conducting the SN-1 observatory recovery in May 2003 successfully. Nevertheless 2 thrusters showed problems during the GNDT recovery, without harming the mission. • For BIODEEP cruise the configuration shall be: • 2 thruster mounted on MODUS • 2 thruster available as spare • For the BIODEEP mission we don’t see a risk, as a wide range of operation is not necessary.

  6. Component 2001 cruise Improvements Cameras Needed: 4 at MODUS available 4: 2x col, 2x b/w Needed: 4 at MODUS available 6: - 3x b/w (incl. 1x Hi-Res),- 3x col (incl 1x Zoom) Control-Racks 1x Video (=2 Monitors), 1x Steering, 1x Sonar 2x Video (=4 Monitors), 1x Steering, 1x Sonar Video-Line One VGA signal in-line for two Monitors One VGA signal splitted for four Monitors=better quality images Video-Recording Two Recorder for two Monitors Four Recorder for four Monitors Comparison between ‘old’ and improved Video-System

  7. Video documentation system left: 2001 cruise equipment for MODUS steering and control units right: new configuration with additional second 19” Video-System rack

  8. Comparison between ‘old’ and improved Video-System New Zoom-Camera from DeepSea-Power&Light: Super SeaCam 6000, 12xZoom, autofocus

  9. 10 m 200 m Configurations for 2003 cruise 15 m survey • sw/brine interface • body brines + HP5l

  10. System upgrades • more sensors transmissometer added to SCIPACK CTD. Integration of other sensors possible (CH4, pH, Eh, O2, etc.), depends on budget • possibility to explore the second interface of Urania basin long cable provided • sensors at two levels (e.g. at two ends of the Niskin bottles) for a more accurate sampling at the interface no sensor provided by CONISMA  not implemented • Additional TV camera on SCIPACK no budget for that in BIODEEP • Integration of IMBC multicorer TUB and IMBC to coordinate

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