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RV Ronald H. Brown Cruise RB0602 and RRS Discovery Cruise D304, Rapid Mooring Cruise Report March and May 2006

By M.O. Baringer and T. Kanzow

Abstract

This report describes the mooring operations conducted during RV Ronald H. Brown Cruise RB0602 and RRS Discovery Cruise D304. Cruise RB0602 was conducted between 9 March 2006 and 28 March 2006, and Cruise D304 was conducted between 12 May 2006 and 6 June 2006.<br/><br/>These mooring operations were completed as part of the United Kingdom Natural Environment Research Council (NERC) funded RAPID Programme to monitor the Atlantic Meridional Overturning Circulation at 26.5ºN. The primary purpose of these cruises was to service the 26.5ºN mooring array first deployed in 2004 during RRS Discovery cruises D277 and D278 (SOC cruise report number 53), and serviced in 2005 during RRS Charles Darwin Cruise CD170 and RV Knorr Cruise KN182-2 (NOCS cruise report number 2), and RRS Charles Darwin Cruise CD177 (NOCS cruise report number 5).<br/><br/>Cruise RB0602 was from Barbados to Charleston, SC, and covered the Western Boundary moorings deployed on KN182-2. Cruise D304 was to and from Tenerife and covered the Eastern Boundary and Mid-Atlantic Ridge moorings deployed on cruises CD170 and CD177. These cruises are the second annual refurbishment of an array of moorings deployed across the Atlantic in order to set up a pre-operational prototype system to continuously observe the Atlantic Meridional Overturning Circulation (MOC). Cruise CD177 was an intermediate service cruise to obtain data from the two principal Eastern Boundary moorings six months after deployment. This array will be further refined and refurbished during subsequent years.<br/> <br/>The instruments deployed on the array consists of a variety of current meters, bottom pressure recorders, CTD loggers and Inverted Echosounders, which, combined with time series measurements of the Florida Channel Current and wind stress estimates, will be used to determine the strength and structure of the MOC at 26.5ºN. (http://www.noc.soton.ac.uk/rapidmoc)<br/

Topics: GC
Publisher: National Oceanography Centre Southampton
Year: 2007
OAI identifier: oai:eprints.soton.ac.uk:48093
Provided by: e-Prints Soton

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  1. (position: just before recovery buoy pickup)
  2. (uncorr) as rec. bouy on ship Ship crossed mooring line before all buoys surfaced. Various parts of mooring were tangled, wires were cut and some came up damaged (black cover removed)
  3. (2006). (uncorr) Rapid Mooring Cruise Report for
  4. 0800-1200 Trying to release EB1 – Failed or rising very slowly 0813 RIB launched
  5. (2006). 10:54 Wire cut due to tangle Rapid Mooring Cruise Report for
  6. (2006). 13.3 Ship’s Gyrocompass The ship’s gyrocompass provides a reliable (i.e. not dependent on transmissions external to the ship) estimate of the ship’s heading. However, the Rapid Mooring Cruise Report for RB0602 and D304 – March and
  7. 134 from 1225 to 1432 – 2 hrs 7 mins lost data •
  8. 1504: MMP wire tangled with lower MMP stop with occasional knots. Wire tangled around MMP itself After MMP stop wire still tangled with part of the wire where RCM11 was; RCM11 came before the 8 glass spheres: wire had to be cut
  9. (2006). 1608: Wire caught on clamp desk and damaged, possibility of snap (right after cable link) 1618: Wire cut & linked again for safety Rapid Mooring Cruise Report for
  10. 1800 Workboat recovered – proceeding to Lander site 2120-27 Deploying Mooring Lander
  11. a d e r
  12. Aanderaa RCM11 – serial number 301 Pings per ensemble 600 Temperature range High Conductivity range 44-55mS (rollover on) Recording interval 30 mins N o o f c h a n n e l
  13. Aanderaa RCM11 – serial number 305 Pings per ensemble 600 Temperature range High Conductivity range 43-52mS (rollover on) Recording interval 30 mins N o o f c h a n n e l
  14. Aanderaa RCM11 – serial number 307 Pings per ensemble 600 Temperature range Highc Conductivity range 51-55mS (rollover on) Recording interval 30 mins N o o f c h a n n e l
  15. Aanderaa RCM11 – serial number 309 Pings per ensemble 600 Temperature range Low Conductivity range 37-41mS (rollover on) Recording interval 30 mins N o o f c h a n n e l
  16. Aanderaa RCM11 – serial number 310 Pings per ensemble 600 Temperature range Low Conductivity range 33-35mS (rollover on) Recording interval 30 mins N o o f c h a n n e l
  17. Aanderaa RCM11 – serial number 446 Pings per ensemble 600 Temperature range Arctic Conductivity range 32-34mS (rollover on) Recording interval 30 mins N o o f c h a n n e l
  18. Aanderaa RCM11 – serial number 450 Pings per ensemble 600 Temperature range Arctic Conductivity range 31-34mS (rollover on) Recording interval 30 mins N o o f c h a n n e l
  19. (2006). Aanderaa RCM11 – serial number 451 Pings per ensemble 600 Temperature range Arctic Conductivity range 32-34mS (rollover on) Recording interval 30 mins N o o f c h a n n e l
  20. (2006). B 14 O n t i m e 1 m i n Cycle time 30 mins Average count 120 Channels at average Hx, Hy, Cond., Temp.,
  21. bottom pressure recorder, BPR, cruise RB0602 2006, cruise D304 2006, CTD, current meter, Discovery, Meridional Overturning Circulation, MOC, mooring array,
  22. (2006). Buoy n/a Broke loose weeks after deployment. n/a 1 st tether support float n/a 2 nd tether support float n/a 3 rd tether support float n/a 4 th tether support float n/a 49” yellow syntactic n/a Did not surface
  23. (2006). Chief Electronics Tech. 25 persons Table 1.1: Details of personnel on cruise
  24. Commenced search for old EBH4 0330 Search completed awaiting daylight 27 58.8N 013 24.4W 0500-0708 Old EBH4 Failed to release – Abandoned temporarily until l a t e r d a t e 0708
  25. (2006). COMMENTS Small boat attached light line to syntactic. Heavy recovery line floated out to small boat then attached to light line Rapid Mooring Cruise Report for
  26. (2006). Cruise Report for
  27. (2006). Cruise Report for RB0602 and
  28. (2006). Cruise Report for RB0602 and D304
  29. (2006). Cruise Report for RB0602 and D304 – March and
  30. (2006). Deployment of WB2 WB2 was deployed on the 23 rd
  31. (2006). Deployment of WB4 Mooring WB4 was deployed buoy first, anchor last by freefall on the 22 nd
  32. (2006). Deployment of WBL3 Deployment of WBL3 was on the evening of the 23 rd
  33. Emergency and Lifeboat muster and instruction given in our pre sailing activities – preparing to sail from
  34. (2006). Enrique Vidal-Vijande 0738 – wire snapped on winch, recovered and redeployed mooring – OK Snapped wire (1200m) replaced by 1500m length wire 190m were taken off. Release rigged with stainless double link Rapid Mooring Cruise Report for
  35. (2006). European Way Southampton SO14 3ZH UK Tel: +44(0)23 80596116 Email: nol@noc.soton.ac.uk A pdf of this report is available for download at: http://eprints.soton.ac.uk/ 48093/ Rapid Mooring Cruise Report for RB0602 and D304 – March and
  36. (2000). Figure A.1: Mooring Locations F i g u r e A . 2 : M o o r i n g A r r a y S c h e m a t i c – S p r i n g
  37. (2006). Head off to Tenerife. Rapid Mooring Cruise Report for
  38. James Watson Depth: 4981m (uncorr) Billings tangled with top glass spheres, recovered then redeployed. Between SBE 4466 and 4468 wire slightly damaged, taped up. Before SBE 4468 jam in drum, speed slowed.
  39. James Watson Microcats in direct sunlight, very hot. 50m of wire was added after S4 After deployment top floats surfaced (mooring too long).
  40. (2006). Laure Grignon SOES – NOCS Enrique Vidal Volunteer Robert Mclachlan UKORS –
  41. (2006). link to releases not taped Rapid Mooring Cruise Report for
  42. (2006). Mooring Cruise Report for
  43. (2006). Mooring Cruise Report for RB0602 and D304 – March and
  44. (2006). National Oceanography Centre Southampton Cruise Report,
  45. (2006). No telemetry system was deployed from these cruises. The large surface telemetry buoy greatly endangers the mooring and affects its performance in strong Rapid Mooring Cruise Report for RB0602 and D304 – March and
  46. Nortek Aquadopp – serial number 1415 Measurement interval 1800 seconds Average interval 120 seconds Measurement load 4 (auto) Blanking distance 1.5m Compass update 2 seconds Speed of sound Measure from Temp and fixed Salin.
  47. (2006). Note: put a longer distance between floats and instruments Rapid Mooring Cruise Report for
  48. (2006). of rope added below acoustic release Rapid Mooring Cruise Report for
  49. (2006). on D304 Tide interval 15 minutes Tide measurement duration 15 minutes Frequency of reference measurements 96 tide samples Start date 25/05/2006
  50. (2006). passal: File in: sal304nnn, sam304nnn. File out: sam304nnn. Paste salinity sample data from sal into the sample file sam. Rapid Mooring Cruise Report for
  51. (2006). per ensemble 600 Temperature range Low Conductivity range 46-55mS (rollover on) Recording interval 30 mins N o o f c h a n n e l
  52. (2006). Photograph C.12: Deployment of current meters on modified-EBHi current meter trial mooring. (D304)Rapid Mooring Cruise Report for RB0602 and D304
  53. (2006). Prior to the cruise the 9-way RS-232 input from the NMFD head/pitch roll ADU-2 interface was not connected to the OS75 PC. The D-socket was found to be Rapid Mooring Cruise Report for RB0602 and D304
  54. (2006). R a p i d M o o r i n g C r u i s e R e p o r t f o r
  55. (2006). Rapid Mooring Cruise Report for
  56. Rapid Mooring Cruise Report for RB0602 and D304 – March and
  57. (2006). RB-06-02 MRG ID: WBADCP Western Atlantic
  58. RB-06-02 MRG ID: WBADCP Western Atlantic 26N DEPLOYMENT UKORS ID LATITUDE 26 31.483N 592m u/c. 601m corr.
  59. (2004). RB0602 and D304 are the sixth and seventh cruises respectively on which staff from the NOC have completed mooring operations as part of the RAPID-MOC project. The array was first deployed in Spring
  60. (2006). rd Raft of 6 x 17” glass n/a 14:48 RCM11 301 Wire tangled around hard hats 14:45 SBE37 Microcat 3479 15:01 Raft of 4 x 17” glass n/a Wire tangled around glass hard hats 15:10
  61. (2005). Recovery of WB2 The former telemetry mooring had already been determined to have been damaged as the telemetry buoy broke loose and was recovered in
  62. (2006). Recovery of WB4 The mooring was located quickly on the 21 st
  63. (2006). release dropped onto deck from 1m height, banged on its side: no apparent damage Rapid Mooring Cruise Report for
  64. (2006). Release: ~10h33: no initial response from mooring, then found to be released.
  65. Replaced 1500m length used from MAR3 with parafil, all wound on and marked ready to go.
  66. Salinity 35 ppt Diagnostics interval 720 minutes Number of samples for diagnostics 20
  67. (2006). samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  68. Seabird SBE26 BPR – serial number 0389 Tide sample interval 30 minutes Tide measurements per wave burst 9999 Wave samples/burst 68 No. of 0.25s periods to integrate waves 33 Start date 31/05/2006
  69. Seabird SBE26 BPR – serial number 0396 Tide sample interval 15 minutes Tide measurements per wave burst 9999 Wave samples/burst 68 No. of 0.25s periods to integrate waves 33 Start date 17/03/2006
  70. Seabird SBE37 SMP CTD – serial number 3206 Sample interval 900 seconds Start date 23/03/2006 Start time 06:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  71. Seabird SBE37 SMP CTD – serial number 3219 Sample interval 900 seconds Start date 23/03/2006 Start time 06:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  72. Seabird SBE37 SMP CTD – serial number 3220 Sample interval 900 seconds Start date 23/03/2006 Start time 06:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  73. Seabird SBE37 SMP CTD – serial number 3221 Sample interval 900 seconds Start date 23/03/2006 Start time 06:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  74. Seabird SBE37 SMP CTD – serial number 3222 Sample interval 900 seconds Start date 23/03/2006 Start time 06:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  75. Seabird SBE37 SMP CTD – serial number 3226 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  76. Seabird SBE37 SMP CTD – serial number 3228 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  77. Seabird SBE37 SMP CTD – serial number 3230 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  78. Seabird SBE37 SMP CTD – serial number 3231 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  79. Seabird SBE37 SMP CTD – serial number 3232 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  80. (2006). Seabird SBE37 SMP CTD – serial number 3233 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 Rapid Mooring Cruise Report for
  81. (2006). Seabird SBE37 SMP CTD – serial number 3244 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average. WBADCP RD Instruments
  82. Seabird SBE37 SMP CTD – serial number 3246 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  83. Seabird SBE37 SMP CTD – serial number 3260 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  84. Seabird SBE37 SMP CTD – serial number 3261 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  85. Seabird SBE37 SMP CTD – serial number 3262 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  86. Seabird SBE37 SMP CTD – serial number 3905 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  87. Seabird SBE37 SMP CTD – serial number 3906 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  88. Seabird SBE37 SMP CTD – serial number 3907 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  89. Seabird SBE37 SMP CTD – serial number 3908 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  90. Seabird SBE37 SMP CTD – serial number 3909 Sample interval 900 seconds Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  91. Seabird SBE37 SMP CTD – serial number 3917 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  92. Seabird SBE37 SMP CTD – serial number 3921 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  93. Seabird SBE37 SMP CTD – serial number 3922 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  94. Seabird SBE37 SMP CTD – serial number 3923 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  95. Seabird SBE37 SMP CTD – serial number 3924 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  96. Seabird SBE37 SMP CTD – serial number 3925 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  97. Seabird SBE37 SMP CTD – serial number 3926 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  98. Seabird SBE37 SMP CTD – serial number 3927 Sample interval 900 seconds Start date 22/03/2006 Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  99. (2006). Set course for MAR2 site 157° T 0705-0820 Engaged in survey for the deployment site of MAR1 0850 Hove to on Station
  100. (2005). Single Point Current Meter InterOcean S4AD Sontek Argonaut MD Aanderaa RCM11
  101. Sontek Argonaut MD – serial number D298 Averaging interval 120 seconds Sampling interval 1800 seconds Salinity 32.46 ppt Blanking distance 1.5m C e l l s i z e 1
  102. (2006). Start date 23/03/2006 Start time 18:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  103. (2006). Start time 10:00:00 Number of samples to average 4 NB: Likely to deplete battery due to incorrect setting of number of samples to average.
  104. station at 08:53 down to 1500m. Maximum pay out speed 38m/min. due to having to use the dead man’s lever. 12:46, Wire test of releases 163, 318,474 and 359. To 3000m, all fired OK. Calibration dips for 12 seabirds. 10 second sampling rate.
  105. (2006). Table 14.1: CTD Conductivity bottle samples not used for CTD calibration A second order polynomial was then fitted to K versus Cbot, giving K=1.007+4.0652e-07xCbot +4.0652e-07x Cbot2 and CTD corrected=CCTD*K. Rapid Mooring Cruise Report for
  106. (2000). Table E.1: Instrument record lengths Mooring Instrument Serial Number Approx depth (m) Recovered? Date of first useable record Date of last useable record
  107. (2006). The diverter sheave and metre wheel were bolted as appropriate and secured with Rapid Mooring Cruise Report for RB0602 and D304 – March and
  108. (2006). The goal of RAPID-MOC is to develop a pre-operational array to monitor the Atlantic Meridional Overturning Circulation at 26.5°N Rapid Mooring Cruise Report for
  109. The quickest option available to us was to replace the 1250m with the top of MAR3.
  110. The vertical resolution of the lower section of the EB2 MMP mooring was also increased, so that there were six Microcats below 2500m compared to three previously.
  111. (2006). This report describes the mooring operations conducted during
  112. This section details problems encountered with instruments both recovered and deployed, and builds on previous problems detailed in SOC Cruise Report No. 53 Rapid Mooring Cruise Report for RB0602 and D304
  113. (2006). to on Station EBHi 24 57.2N 021 15.6W 1100 mooring EBHi released 1125-1214 Recovering EBHi
  114. to preparing for survey 23 51.8N 041 09.1W 0545-0632 Surveying site for deployment of future
  115. (2006). Torsten suggested moving the EBH4 mooring in to deeper water and extending the mooring by around 200m. This is still in discussion, I have given an approximate guide on what lengths of spare rope I have available.
  116. (2006). valid current measurements Bad pressure record Rapid Mooring Cruise Report for RB0602 and D304
  117. weight of glass spheres led to a uncontrolled deployment of the Idronaut.
  118. with wire below surface 0944 LIGHT Not working when first sighted (dark
  119. (2006). work with the CTD frame. Rapid Mooring Cruise Report for RB0602 and D304
  120. (2006). x 17” glass and swivel n/a 14:33 Light and flag n/a 14:33 SBE37 microcat on keel 3920 14:40 2 x 17” glass and swivel 14:43
  121. x 17” pickup floats n/a Orange hard hat 20:58 28” steel sphere n/a
  122. yellow pickup float n/a
  123. (2006). yellow pickup float n/a 11:59

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