|
|
Ridge to Trench
-
2012
-
Marcus Langseth
|
|
|
|
Project Title: |
Collaborative Research: Evolution and hydration of the Juan de Fuca crust and
uppermost mantle: a plate-scale seismic investigation from ridge to trench. |
Project Status: |
Submitted |
|
Principal Investigator: |
Suzanne M. Carbotte, LDEO |
Project Institution: |
LDEO |
|
Project ID: |
102317 |
Version #: |
1 |
|
Date Submitted: |
2/11/2010 12:53:00 PM |
Created By: |
Suzanne M. Carbotte |
|
Date Last Modified: |
8/5/2011 8:15:00 AM |
URI Serial #: |
None |
|
Funding Agencies: |
NSF/OCE/MGG - 1029411 - Funded |
|
Summary of Field Work: |
The proposed program involves acquisition of multi-channel seismic and OBS refraction data along three long transects (250-470 km) of the Juan de Fuca plate. |
|
Summary of Facility Requirements: |
We require the R/V Langseth to operate in "2D" mode with one 8 km long streamer and the full airgun source array. We are also requesting 41 short-period OBSs from the OBS Instrumentation Pool equipped with 3-component seismometers and hydrophone. We are requesting time on an additional ship to carry out the OBS deployment and recover operations. |
|
Summary of other requirements and comments: |
|
|
|
Type of Request: |
Collaborative Ship Use |
Request Status: |
Submitted |
|
Request ID: |
1003507 |
Created By: |
Suzanne M. Carbotte |
|
Date Last Modified: |
5/2/2011 2:57:00 PM |
Date Submitted: |
2/11/2010 12:53:00 PM |
|
|
Year: |
2012
|
Ship/Facility: |
Marcus Langseth
|
|
Optimum Start Date:
|
7/1/2012 |
Dates to Avoid: |
There is a short weather window within the NE pacific within which the cruise needs to be scheduled. Our experiment involves MCS operations that require calm weather conditions to successfully deploy the gear and acquire data without excessive weather-related noise on the streamer. |
|
|
|
|
|
|
Earliest Start Date: |
6/1/2011 |
Multi-Ship Op: |
Yes |
|
Latest Start Date: |
9/1/2011 |
Other Ship(s): |
This is proposed here as a multi-ship experiment with the Langseth which will provide the airgun source for the OBS lines, and will be used for the MCS survey. The Wecoma will be used for OBS deployments and recovery. |
|
|
Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
|
24 |
0 |
0 |
1 |
25 |
Repeating Cruise?
(within same year) |
No |
Interval: |
|
# of Cruises: |
|
|
|
Description of Repeating cruise requirements: |
|
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
The Langseth is requested for full MCS operations and for shooting the OBS transects (25 days). We are requesting an additional ship to conduct the OBS deployment and recovery operations (32 days) which will include a 6 day holdover period while the Lansgeth is shooting the MCS transects. The Wecoma could perform other work during this time but we include this stand by time in the total days request here for the Wecoma. The full program could also be conducted on the Langseth, if this was considered preferable given ship schedules and funding. |
|
Short Description of Op Area
for use in schedules: |
NE Pacific |
| Description of Op Area: |
NE Pacific off the Oregon/Washington coast to the Juan de Fuca Ridge |
| Op Area Size/Dia.: |
|
|
|
| |
Lat/Long |
Marsden Grid |
Navy Op Area |
|
Beginning
|
|
|
|
|
Ending
|
|
|
|
| |
Show Degrees Minutes |
|
|
|
|
|
Foreign Clearance Required? |
Yes |
Coastal States:
Canada |
 Important Info on Foreign Research Clearances
|
|
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)?
|
No |
If yes, have you applied for the necessary permits through your export control office?
|
No |
| Questions about ITAR/EAR regulations?
|
Comments about foreign clearance requirements or
description of any other special permitting requirements
(e.g., MMPA, ESA, IHA, Marine Sanctuaries, etc.) |
|
|
|
Requested Start Port |
Intermediate Port(s) |
Requested End Port |
|
Newport, OR, USA |
None |
Astoria, OR, USA |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
These ports are within a few hours from start/end of our survey. |
Important Info on Working in Foreign Ports
|
|
|
|
Chief Scientist: |
Suzanne M. Carbotte, LDEO |
|
# in Science Party |
20 |
# of different science teams |
1 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
|
9 |
|
Explanation of Science Party Requirements and Technician Requirements |
We will require the Langseth seismic technicians for the MCS work, and for the airguns to OBS work. |
|
 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 | | |
|
Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling. |
The Langseth is required for the MCS component of the program and the airguns to OBS component.
|
|
|
|
Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
We are requesting 41 short-period OBSs from the OBS Instrumentation Pool equipped with 3-component seismometers and hydrophone. The OBSs will be deployed in two separate deployments of 34 and 41 OBSs. |
|
