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Deep-Sea N2 Fixation
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2017
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Oceanus
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Project Title: |
Nitrogen Fixation in Deep-sea Sediments |
Project Status: |
Submitted |
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Principal Investigator: |
Anne E. Dekas, Stanford |
Project Institution: |
Stanford |
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Project ID: |
105156 |
Version #: |
4 |
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Date Submitted: |
2/11/2016 6:23:00 PM |
Created By: |
Anne E. Dekas |
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Date Last Modified: |
1/28/2017 4:36:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/BIO - 1634297 - Funded |
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Summary of Field Work: |
This work will characterize microbial activity related to nitrogen cycling in marine sediments during a single cruise. We plan to collect sediment cores using an 8-tube multicorer from the OSU Coring Facility at nine sites at a range of water depths (500 m to 4500 m). On-board, we will section the cores and preserve the sediment at a range of temperatures (4C, -20C, and -80C) for subsequent analyses. We will also set up bottle incubations with stable isotope labelled substrates (15N2 and 15NH4+). We would also like to collect water using a CTD rosette to characterize the biogeochemistry of the overlying water column. |
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Summary of Facility Requirements: |
We will need a CTD/rosette, 8-tube multicorer, sufficient deck space/A-frame/wire for multicorer deployments/recoveries, indoor bench space, refrigerator, freezers (-20 and -80), and space to secure a liquid nitrogen dewar. |
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Summary of other requirements and comments: |
The range of depths we want to sample is required -- 500 m to 4500 m -- but the exact location of the transect and the timing (time of year) is flexible. |
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Type of Request: |
Collaborative Ship Use |
Request Status: |
Submitted |
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Request ID: |
1008341 |
Created By: |
Anne E. Dekas |
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Date Last Modified: |
1/28/2017 4:36:00 PM |
Date Submitted: |
2/11/2016 6:23:00 PM |
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Year: |
2017
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Ship/Facility: |
Oceanus
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Optimum Start Date:
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1/15/2017 |
Dates to Avoid: |
No dates to avoid. |
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Earliest Start Date: |
1/2/2017 |
Multi-Ship Op: |
No |
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Latest Start Date: |
9/1/2017 |
Other Ship(s): |
N/A |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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9 |
2 |
1 |
1 |
13 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
N/A |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
We have updated the total number of science days to 9, as recommended by the review panel. |
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Short Description of Op Area
for use in schedules: |
CA Coast |
| Description of Op Area: |
We will collect samples along an approximately 145 nautical mile transect off the coast of California, just north of the Monterey Canyon. Our goal is to sample sediments from 500 to 4500 meters water depth down to 30-50 cm. |
| Op Area Size/Dia.: |
145 |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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36.144° N
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125.321° W
map
36° 8.64' N
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125° 19.26' W
map
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Ending
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37.062° N
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122.563° W
map
37° 3.72' N
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122° 33.78' W
map
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Show Degrees Minutes |
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Foreign Clearance Required? |
No |
Coastal States:
NONE |
 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.) |
N/A |
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Requested Start Port |
Intermediate Port(s) |
Requested End Port |
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Moss Landing, CA, USA |
None, |
Moss Landing, CA, USA |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
We are requesting Moss Landing because it is the closest to our study site (174 nautical miles) and also to our home lab. The Monterey port is also close to the study site and would also be suitable. |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Anne E. Dekas, Stanford |
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# in Science Party |
6 |
# 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 |
The science party will consist of six people: the PI, a postdoc, three graduate students and a staff scientist. This number of people will allow us to rapidly extrude and subsample the cores, allowing multiple multicore deployments per day, in addition to CTD sampling. Processing sediment immediately after collection is necessary for the microbiological work we will be doing. We also intend to set up an extensive set of bottle incubations on board (~600 100 ml bottles) which will require the full time attention of two of the scientists. The Oceanus requires one technician. |
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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. |
N/A
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
We will require one of the OSU Coring Facility's Ocean Instruments Multicorers (MC-800). |
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