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Cascad ship-to-shore
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2012
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Marcus Langseth
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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: |
1004637 |
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: |
Marcus Langseth
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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 NE Pacific. |
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Earliest Start Date: |
7/1/2011 |
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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3 |
0 |
0 |
0 |
3 |
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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45° 6' N
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125° 30' W
map
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Ending
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44° 12' N
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124° 18' 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 |
Work starts and finishes off Oregon. Ports indicated here are the same as in the Carbotte et al.' s ship time request. |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Suzanne M. Carbotte, LDEO |
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# in Science Party |
20 |
# of different science teams |
1 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
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9 |
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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. |
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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. |
This is an add-on to Carbotte et al. two-ship MCS/OBS survey. We are proposing to deploy 6 additional OBS's 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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