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CalCOFI trawling
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2010
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New Horizon
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Project Title: |
Midwater trawl sampling in support of CalCOFI acoustic surveys |
Project Status: |
Submitted |
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Principal Investigator: |
Tony Koslow, SIO |
Project Institution: |
SIO |
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Project ID: |
102570 |
Version #: |
1 |
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Date Submitted: |
7/27/2010 7:38:00 PM |
Created By: |
Tony Koslow |
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Date Last Modified: |
7/27/2010 7:38:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
INST/UCSD/SIO - NONE - Funded |
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Summary of Field Work: |
Stratified midwater trawl sampling will be carried out with an MOHT midwater trawl (5 m^2 mouth opening with depressor and rigid frame) during the summer CalCOFI cruise. Over the 24 hr period of available ship time, four hours will be devoted to acoustic transducer calibration at the end of the cruise, and 20 hr will be spread out over the duration of the cruise to enable sampling on the six core CalCOFI transects. Approximately 14 shallow tows to 200 m depth are planned for the night-time period (1 hr duration for each tow, total operation) and 3 deep tows to about 500 m depth during daytime (approximately 2 hr duration for total tow operation). |
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Summary of Facility Requirements: |
Stern A frame and winch. |
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Summary of other requirements and comments: |
The MOHT trawl was successfully deployed on a previous CalCOFI cruise on New Horizon. It requires 5 personnel for deployment and retrieval, and several of the scientists on board have had experience with the gear. Vessel speed during deployment and retrieval should be about 1-2 kt and about 4 kt during the tow operation. The Chief Scientist is familiar with the gear and has a list of preferred station operations. The gear should be towed while en route between stations to minimize the impact on available ship time. |
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Type of Request: |
Collaborative Ship Use |
Request Status: |
Submitted |
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Request ID: |
1003932 |
Created By: |
Tony Koslow |
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Date Last Modified: |
7/27/2010 7:38:00 PM |
Date Submitted: |
7/27/2010 7:38:00 PM |
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Year: |
2010
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Ship/Facility: |
New Horizon
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Optimum Start Date:
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7/30/2010 |
Dates to Avoid: |
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Earliest Start Date: |
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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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1 |
0 |
0 |
0 |
1 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
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Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
The ship time is requested to overlap with the summer CalCOFI cruise, 2010. The operation is in support of the acoustic sampling. |
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Short Description of Op Area
for use in schedules: |
CalCOFI grid |
| Description of Op Area: |
The operation will be carried out over the course of the standard 66-station CalCOFI grid in the southern California Current. |
| Op Area Size/Dia.: |
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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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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 |
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Important Info on Working in Foreign Ports
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Chief Scientist: |
Tony Koslow, SIO |
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# in Science Party |
2 |
# of different science teams |
2 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
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5 |
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Explanation of Science Party Requirements and Technician Requirements |
Jian Liu and Amanda Netburn will be primarily responsible for the gear and samples. Deployment and retrieval require 5 persons plus a winch operator and control from the bridge. The back-deck operation has been carried out by the CalCOFI technicians. One scientist will be required afterward for sample processing. |
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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. |
The winch wire deployed over the stern is adequate.
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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