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EXITS
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2011
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Roger Revelle
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Project Title: |
Collaborative Research: Experiment on Internal Tide Scattering |
Project Status: |
Submitted |
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Principal Investigator: |
T. M. Shaun Johnston, SIO |
Project Institution: |
SIO |
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Project ID: |
101404 |
Version #: |
3 |
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Date Submitted: |
1/29/2008 1:45:00 PM |
Created By: |
T. M. Shaun Johnston |
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Date Last Modified: |
4/28/2009 1:26:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/PO - 0824954 - Funded |
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Summary of Field Work: |
3 cruises to the Line Islands Ridge will examine internal tide scattering from topography. Cruise 1 will deploy 3 moorings each equipped with 2 McLane Moored Profilers for 50 days. We will then occupy 19 CTD/LADCP/microstructure stations for 25 hours each and make at least 8 casts. The rosette will be equipped with the ship's CTD, ship's ancillary sensors, upward and downward looking ADCPs, and an internally recording micrconductivity instrument powered by the CTD. No bottles are needed. Also an untethered microstructure instrument will be deployed and recovered every 6 hours in between CTD profiles about 1-2 miles from the CTD station. Cruise 2 will recover and redeploy the moorings for 100 days. Cruise 3 will recover the moorings. Transit from Honolulu is about 3 days in each direction. Cruises 1-3 are requested to be 32, 12, and 12 days. Cruise 1 mooring deployments should be completed several days before the spring tide. (More details can be provided during scheduling.) |
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Summary of Facility Requirements: |
- Ship's CTD and ancillary instruments without bottles
- Starboard crane for recovery and deployment of untethered microstructure instrument
- TSE mooring winch for mooring work
- 50 and 140 kHz Doppler sonar on R/V Revelle
- multibeam for bathymetry survey of mooring sites |
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Summary of other requirements and comments: |
R/V Revelle is requested for Cruises 1-3 because of the 50 and 140 kHz Doppler sonars excellent current shear measurements. It is especially important for Cruise 1.
Program start deferred to 2010 and separate cruise requests created for each cruise. Need to verify what the earliest start date in 2010 can be given that the program has been deferred [jmp - 4/28/09] |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1002937 |
Created By: |
T. M. Shaun Johnston |
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Date Last Modified: |
4/28/2009 1:26:00 PM |
Date Submitted: |
4/28/2009 1:26:00 PM |
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Year: |
2011
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Ship/Facility: |
Roger Revelle
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Optimum Start Date:
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2/6/2011 |
Dates to Avoid: |
start 104 days after start of cruise 2
deferred to 2011 [jmp] |
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Earliest Start Date: |
2/6/2011 |
Multi-Ship Op: |
No |
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Latest Start Date: |
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Other Ship(s): |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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12 |
1 |
1 |
0 |
14 |
Repeating Cruise?
(within same year) |
Yes |
Interval: |
50, 100 days |
# of Cruises: |
3 |
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Description of Repeating cruise requirements: |
Cruise 1 is 32 days. The first mooring is deployed on day 4. Moored profiler batteries last 50 days.
Cruise 2 is 12 days and begins 54 days after Cruise 1 begins. The first mooring is deployed on day 4 of cruise 2. Moored profiler batteries last 100 days. Moorings will be recovered and redeployed.
Cruise 3 begins 104 days after Cruise 2 begins. Moorings are recovered.
1 full day of loading and unloading for each cruise is needed. |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
Revelle is requested for the 140 and 50 kHz Doppler sonars because of their excellent resolution of current shear. This is especially important for Cruise 1. |
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Short Description of Op Area
for use in schedules: |
Line Islands |
| Description of Op Area: |
Submarine ridge at about 1300 m and adjacent abyssal areas at about 5000 m depth.
Submarine ridge is near 15.5 N, 169.5 W |
| Op Area Size/Dia.: |
120 nm |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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Ending
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Show Degrees Minutes |
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Foreign Clearance Required? |
No |
Coastal States:
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 Important Info on Foreign Research Clearances
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Are you or any member in your science party bringing in any science equipment items which are regulated for export by the International Traffic in Arms Regulations (ITAR) and/or the Export Administration Regulations (EAR)?
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No |
If yes, have you applied for the necessary permits through your export control office?
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No |
| Questions about ITAR/EAR regulations?
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Comments about foreign clearance requirements or
description of any other special permitting requirements
(e.g., MMPA, ESA, IHA, Marine Sanctuaries, etc.) |
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Requested Start Port |
Intermediate Port(s) |
Requested End Port |
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None |
None |
None |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
Honolulu is nearest major port. 3 day transit each way to op area. |
Important Info on Working in Foreign Ports
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Chief Scientist: |
T. M. Shaun Johnston, SIO |
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# in Science Party |
13 |
# of different science teams |
1 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
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1 |
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Explanation of Science Party Requirements and Technician Requirements |
We will be doing 24 hr CTD operations during cruise 1. |
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 Dynamic Positioning |  ADCP | Multibeam | Seismic |
| Dredging/Coring/Large Dia. Trawl Wire | Stern A-frame | Fiber Optic (.681) | 0.680 Coax Wire |
| SCUBA Diving | Radioisotope use - briefly describe | NO Radioisotope use/Natural level work | Other Operator Provided Inst. - Describe |
| 0 PI-Provided Vans - briefly describe | MOCNESS | | |
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Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling. |
We will be deploying moorings and need to survey sites for their deployment on cruise 1. Dynamic positioning would be useful for CTD profiling, but is not essential.
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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