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N2-Fixation in GoMex
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2010
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Seward Johnson
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Project Title: |
Collaborative Research: Nitrogen fixation, nutrient supply, and biological production in the Gulf of Mexico |
Project Status: |
Submitted |
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Principal Investigator: |
Joseph Montoya, GaTech |
Project Institution: |
GaTech |
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Project ID: |
101947 |
Version #: |
5 |
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Date Submitted: |
2/17/2009 9:16:00 AM |
Created By: |
Joseph Montoya |
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Date Last Modified: |
4/15/2011 4:54:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/BIO - 0928495 - Funded |
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Summary of Field Work: |
We propose two cruises to the Gulf of Mexico. These cruises will allow us to survey waters previously undersampled with respect to the diversity and activity of N2-fixing organisms. We will focus on areas affected by the MIssissippi plume as well as mesoscale features. At sea, we will collect water samples for analysis and experimentation using a CTD/rosette as well as pump systems for surface water. We will carry out an extensive suite of experiments to measure the rates of N2-fixation as well as the diversity of diazotrophs in these waters. |
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Summary of Facility Requirements: |
We need a CTD/rosette, a mocness system, a hydrowire for deploying nets, and provision for deploying hand nets from on deck. We also need deck space for flowing seawater incubators and lab space for filtrations, nutrient chemistry, microscopy, and other lab analyses. |
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Summary of other requirements and comments: |
T. Villareal's group plans to sample Trichodesmium and large diatoms using SCUBA. |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1002839 |
Created By: |
Joseph Montoya |
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Date Last Modified: |
4/15/2011 4:54:00 PM |
Date Submitted: |
2/17/2009 9:16:00 AM |
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Year: |
2010
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Ship/Facility: |
Seward Johnson
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Optimum Start Date:
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7/26/2010 |
Dates to Avoid: |
We need to avoid conflict with the first ANACONDAS cruise (P. Yager, lead PI) tentatively scheduled for 21 May - 21 June 2010. We'll need time to turn around our cruise gear for the Gulf cruise. |
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Earliest Start Date: |
7/19/2010 |
Multi-Ship Op: |
No |
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Latest Start Date: |
8/1/2010 |
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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24 |
2 |
1 |
2 |
29 |
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: |
We want to sample the Gulf of Mexico during the summer, when large populations of N2-fixing organisms are known to be present and the Mississippi plume tends to extend the furthest offshore. We request the Seward Johnson b/c we have extensive experience on the RVSJ and it is well suited for our work. |
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Short Description of Op Area
for use in schedules: |
Gulf of Mexico |
| Description of Op Area: |
Northern Gulf of Mexico, focusing on regions in the Eastern Gulf affected by the Mississippi outflow, and mesoscale eddies throughout the Northern Gulf. |
| 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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Fort Pierce, FL, USA |
Mobile, AL, USA |
Fort Pierce, FL, USA |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
Ft. Pierce is a good staging and loading/offloading site for both the GT and UTMSI groups . We propose an intermediate port call in Mobile to exchange personnel. |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Joseph Montoya, GaTech |
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# in Science Party |
24 |
# of different science teams |
4 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
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2 |
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Explanation of Science Party Requirements and Technician Requirements |
From prior experience, the absolute minimum size science party for our core work at sea is about 12 persons and 18 is typical. We have a strong record of involving collaborators in our work at sea and typically have members of at least 3 or 4 outside labs join us at sea. |
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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 |
| 2 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 carry out stable isotope (15N, 13C) tracer experiments. We will need a meter mocness for zooplankton sampling. If hold space isn't available for our shipping crates and other gear, we'll need a storage van on deck. T. Villareal's group plans to sample Trichodesmium and large diatoms using SCUBA.
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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