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Equatorial MAR
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2012
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Knorr
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Project Title: |
Collaborative Research: Seismicity of the Equatorial Mid-Atlantic Ridge and its Large Offset Transforms |
Project Status: |
Submitted |
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Principal Investigator: |
Deborah Smith, NSF |
Project Institution: |
NSF |
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Project ID: |
102629 |
Version #: |
3 |
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Date Submitted: |
8/10/2010 2:35:00 PM |
Created By: |
Deborah Smith |
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Date Last Modified: |
7/8/2013 8:03:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/EAR - 1062165 - Funded |
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Summary of Field Work: |
We are proposing to deploy 3 autonomous hydrophone moorings in the Equatorial Atlantic for two years. Assuming that Fortaleza, Brazil will be the port of departure and return, and a transit speed of 10 kt, the deployment cruise will take approximately 11.5-12 days. This time takes into account 8 hr at each site to collect multibeam bathymetry, find a suitably flat location on the seafloor, deploy the hydrophone,and survey it in. The retrieval cruise requires that we pick up 4 hydrophones and would take approximately 17 days if the ports were Barbados-Fortaleza, Brazil. |
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Summary of Facility Requirements: |
We will need a crane or A-frame and a mooring winch or capstan. We would also like a hull mounted transducer to interrogate the mooring releases if available. |
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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: |
1004020 |
Created By: |
Deborah Smith |
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Date Last Modified: |
7/8/2013 8:03:00 PM |
Date Submitted: |
8/10/2010 2:35:00 PM |
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Year: |
2012
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Ship/Facility: |
Knorr
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Optimum Start Date:
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1/15/2012 |
Dates to Avoid: |
April - May 2012 to avoid deployment of hydrophones on the PIRATA servicing cruise. |
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Earliest Start Date: |
1/1/2012 |
Multi-Ship Op: |
No |
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Latest Start Date: |
2/28/2012 |
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 |
11 |
12 |
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 budget for 8 hrs/hydrophone deployment and 10.5 days of transit RT from Fortaleza, Brazil. We chose the Knorr because it is in the Atlantic and might be available in late 2011/early 2012. |
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Short Description of Op Area
for use in schedules: |
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| Description of Op Area: |
We propose to deploy 3 hydrophones at the following longitudes and latitudes
42W 7N
35W 11N
30W 2S |
| 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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Fortaleza, Brazil |
None |
Fortaleza, Brazil |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
Fortaleza appears to be the closest port to the hydrophone locations |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Maurice A. Tivey, WHOI |
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# in Science Party |
4 |
# of different science teams |
1 |
# 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 |
We will need a technician to operate the mooring winch and help with the over the side work. |
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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. |
mooring winch for deploying the hydrophone mooring
XBTs to obtain sound velocity profile at 3 mooring locations
multibeam bathymetry to map the region to define a flat area to anchor the mooring
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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