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Micro-rosette test
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2014
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Robert Gordon Sproul
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Project Title: |
Initial sea trials of the micro-rosette: a microfluidic profiling sensor for dissolved inorganic carbon. |
Project Status: |
Submitted |
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Principal Investigator: |
Philip Bresnahan, UCSD |
Project Institution: |
UCSD |
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Project ID: |
104162 |
Version #: |
5 |
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Date Submitted: |
12/2/2013 1:05:00 PM |
Created By: |
Philip Bresnahan |
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Date Last Modified: |
1/24/2014 4:24:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
INST/UCSD/SIO - NONE - Funded |
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Summary of Field Work: |
We are proposing evaluation cruises for the micro-rosette: a profiling instrument capable of quantifying depth-resolved dissolved inorganic carbon. Our proposed expeditions will consist of: a) steaming offshore from San Diego to the closest accessible station with > 1,000 m bottom depth followed by b) multiple CTD/rosette wire profiles (to 100, 500, and 1,000 m) with the micro-rosette strapped to the main rosette frame. A critical component of each deployment cycle is the analysis portion: when the rosette frame reaches its final profiling depth (similar to what is referred to as the “park depth” for an Argo float), it will begin the chemical analysis procedure. The analysis routine lasts approximately three hours at park depth. We have tested our instrument with the R/V Sproul’s SBE 9plus CTD and SBE 11plus deck unit to ensure seamless real-time communication with the micro-rosette during the profiles. During each profile, we will trigger Niskin bottles to capture seawater samples for subsequent ship-board comparison of dissolved inorganic carbon values to the results from the micro-rosette. |
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Summary of Facility Requirements: |
We will need a CTD/rosette with approximately thirteen hours of winch time per cruise. During each profile, we will stop the rosette at its maximum depth (100, 500, or 1,000 m, as described above) for approximately three hours before beginning the upcast. Additionally, we will need to be able to access the SBE 11plus deck unit serial communication ports. |
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Summary of other requirements and comments: |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1006637 |
Created By: |
Philip Bresnahan |
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Date Last Modified: |
1/24/2014 4:24:00 PM |
Date Submitted: |
12/2/2013 1:05:00 PM |
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Year: |
2014
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Ship/Facility: |
Robert Gordon Sproul
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Optimum Start Date:
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4/1/2014 |
Dates to Avoid: |
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Earliest Start Date: |
3/20/2014 |
Multi-Ship Op: |
No |
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Latest Start Date: |
5/20/2014 |
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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2 |
0 |
0 |
0 |
2 |
Repeating Cruise?
(within same year) |
Yes |
Interval: |
4 months |
# of Cruises: |
2 |
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Description of Repeating cruise requirements: |
The rationale for requesting two separate cruises is that we expect to make several shore-side modifications to the device based on our experience on the first cruise. Following these anticipated modifications, we wish to repeat identical sea tests. Optimal cruise dates are between March-May for the first test and July-September for the second. |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
We are currently testing a prototype version of this instrument on the bench top and will begin seawater tests in the 7,000 liter Chemical Sensor Recharge Facility (CSRF) tank in January, 2014. Complete prototype evaluation will be achieved by testing the instrument’s performance to 1,000 m ocean depth. We anticipate that the system will be fully configured and ready for ocean profiles by mid-March. |
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Short Description of Op Area
for use in schedules: |
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| Description of Op Area: |
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| Op Area Size/Dia.: |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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32.6771° N
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117.5973° W
map
32° 40.626' N
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117° 35.838' W
map
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Ending
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32.6771° N
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117.5973° W
map
32° 40.626' N
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117° 35.838' W
map
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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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San Diego, CA, USA |
None |
San Diego, CA, USA |
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: |
Philip Bresnahan, UCSD |
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# in Science Party |
5 |
# 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 |
Duties will be shared among five scientists. The chief scientist (Bresnahan) and faculty advisor (Prof. Todd Martz) will be responsible for operating the micro-rosette before, during, and after deployment. They will also communicate with the instrument using the SBE 11plus deck unit. The three additional scientists will assist with deck operations as well as collecting seawater samples from the rosette and operating an on-board dissolved inorganic carbon analyzer to compare rosette values to those from the micro-rosette. |
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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. |
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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