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Cascad ship-to-shore
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2012
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Wecoma
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Project Title: |
Collaborative Research: Imaging the Cascadia subduction zone: a ship-to-shore opportunity |
Project Status: |
Submitted |
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Principal Investigator: |
Helene D. Carton, LDEO |
Project Institution: |
LDEO |
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Project ID: |
102978 |
Version #: |
1 |
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Date Submitted: |
7/12/2011 9:37:00 AM |
Created By: |
Helene D. Carton |
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Date Last Modified: |
2/17/2012 8:34:00 AM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/EAR - EAR 1147622 - Funded |
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Summary of Field Work: |
This is an onshore-offshore add-on to program "Collaborative Research: Evolution and hydration of the Juan de Fuca crust and uppermost mantle: a plate-scale investigation from ridge to trench", by S. Carbotte and colleagues, planned for the summer of 2012. We are proposing to extend shooting (OBS component - no additional streamer operation) along the Washington margin transect by 52 km (to the shallowest water accessible), along the Oregon margin transect by 8 km, as well as shoot along 5 shorter lines on the shelf off Oregon totaling 440 km. Those shots will be recorded by the additional OBS's and land stations. |
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Summary of Facility Requirements: |
We require the R/V Langseth to operate in "2D" mode with the full airgun source array. We are requesting 6 short-period OBS's from the OBS Instrumentation Pool equipped with 3-component seismometers and hydrophone. We are requesting time on R/V Wecoma to carry out the deployment and recovery operations. We are requesting 48 USArray FlexArray short period instruments to record the airgun shots on land. |
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Summary of other requirements and comments: |
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Type of Request: |
Collaborative Ship Use |
Request Status: |
Submitted |
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Request ID: |
1004638 |
Created By: |
Helene D. Carton |
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Date Last Modified: |
7/12/2011 9:37:00 AM |
Date Submitted: |
7/12/2011 9:37:00 AM |
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Year: |
2012
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Ship/Facility: |
Wecoma
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Optimum Start Date:
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7/1/2012 |
Dates to Avoid: |
July-September is the optimal weather window for working in the NE Pacific. |
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Earliest Start Date: |
7/1/2012 |
Multi-Ship Op: |
Yes |
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Latest Start Date: |
9/1/2011 |
Other Ship(s): |
This is a two-ship survey with R/V Langseth carrying the airgun source and one 8-km streamer and R/V Wecoma performing OBS deployment and recovery operations. |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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4 |
0 |
0 |
0 |
4 |
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: |
NE Pacific |
| Description of Op Area: |
NE Pacific off the Oregon/ Washington coast; wedge and shelf up to the shallowest water depth accessible (50-100m). |
| Op Area Size/Dia.: |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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44° 18' N
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125° 30' W
map
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Ending
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43° 48' N
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124° 30' W
map
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Show Degrees Minutes |
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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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Newport, OR, USA |
None |
Astoria, OR, USA |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
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Important Info on Working in Foreign Ports
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Chief Scientist: |
Juan Pablo Canales, WHOI |
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# in Science Party |
10 |
# 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 |
The same numbers have been used as in Carbotte et al.'s ship time request. OBS technicians from SIO or WHOI will be needed along with Wecoma technicians for the deployment and recovery 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. |
The ship needs to be adequately equiped for OBS operations (deployment and recovery) associated with a total of 41 (planned Carbotte et al. survey) + 6 (this add-on) OBSs.
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
This is an add-on to Carbotte et al. two-ship MCS/OBS survey. We are proposing to deploy 6 additional OBSs from the OBSIP pool as well as 48 USArray FlexArray short period instruments in Oregon and Washington to record the airgun shots (from the initial program + additional shots this add-on). |
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