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MAR 36°14N Seismic
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2013
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Marcus Langseth
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Project Title: |
Collaborative Proposal: Seismic Investigation of the Rainbow Hydrothermal Field and its Tectono/Magmatic Setting, Mid-Atlantic Ridge 36° 14’N |
Project Status: |
Submitted |
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Principal Investigator: |
Juan Pablo Canales, WHOI |
Project Institution: |
WHOI |
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Project ID: |
102143 |
Version #: |
1 |
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Date Submitted: |
8/11/2009 9:48:00 AM |
Created By: |
Juan Pablo Canales |
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Date Last Modified: |
9/5/2012 9:48:00 AM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/MGG - 0961680 - Funded |
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Summary of Field Work: |
(1) 3-D ocean-bottom-seismometer tomography study of the Rainbow vent fields and surrounding area. (MAR 36°14'N), using 46 OBS on a 30x80 km grid and about 7 days of airgun shooting to the instruments.
(2) Multi-channel Seismic Study of the same area using 8-km-long streamer. About 6 days of airgun work (~850 km of seismic profiles).
(3) A passive microearthquake study (`6 months) of same area. 15 OBS will record seismicity on the seafloor for ~ 6 months duration. These long-term short-period instruments will be deployed at end of seismic shooting and left on seafloor for later retrieval be a separate ship. |
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Summary of Facility Requirements: |
R/V Langseth with airgun source array and MCS capabilities in June/July of 2011.
OBS: single-source (2D) 4 x 10-gun strings (1650 c.i. per string).
MCS: single-source (2D) 2 x 10-gun stings (1650 c.i. per string).
One streamer (2D config.) with 8-km-long active section. Differential GPS.
Full compliment of Langseth sonar capabilities (multibeam, sub-bottom profiler, PAM), magnetometer, and gravimeter.
A separate "ship of opportunity" to retrieve instruments in late 2011 or early 2012. |
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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: |
1003169 |
Created By: |
Juan Pablo Canales |
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Date Last Modified: |
6/8/2011 9:53:00 AM |
Date Submitted: |
8/11/2009 9:48:00 AM |
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Year: |
2013
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Ship/Facility: |
Marcus Langseth
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Optimum Start Date:
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6/1/2013 |
Dates to Avoid: |
Avoid northern hemisphere winter as high seas will make OBS and MCS operations dangerous and difficult. There will also be high noise levels at that time, so it is a bad time for recording data. |
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Earliest Start Date: |
4/1/2011 |
Multi-Ship Op: |
No |
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Latest Start Date: |
8/1/2011 |
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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32 |
0 |
0 |
4 |
36 |
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: |
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Short Description of Op Area
for use in schedules: |
MAR 36°14'N |
| Description of Op Area: |
South of Azores on the Mid-Atlantic Ridge, centered at 36°14'N, 326.1E in >1000m of water. |
| Op Area Size/Dia.: |
100 |
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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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Ponta Delgada, Azores (Acores), Portugal |
None |
Ponta Delgada, Azores (Acores), Portugal |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
The study site is less than 2 days from Ponta Delgada, São Miguel Island in the Azores, a major mid-Atlantic port. This port is routinely used by global-class oceanographic vessels. |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Juan Pablo Canales, WHOI |
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# in Science Party |
14 |
# 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 |
A science party of ~8 academics, 6 OBS technicians (from OBSIP), and the necessary airgun and MCS technicians (determined by LDEO) |
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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. |
OBSIP: Scheduling will be impacted by availability of OBS instruments and technicians. |
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