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Project Title: |
Collaborative Research: Relationship between plate boundary
obliquity, strain accommodation, and fault zone geometry at
oceanic-continental transforms: The Queen Charlotte Fault |
Project Status: |
Submitted |
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Principal Investigator: |
Lindsay Worthington, UNM |
Project Institution: |
UNM |
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Project ID: |
106020 |
Version #: |
5 |
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Date Submitted: |
1/22/2018 2:26:00 PM |
Created By: |
Emily Roland |
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Date Last Modified: |
9/8/2020 8:31:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/MGG - 1824927 - Funded |
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Summary of Field Work: |
Characterization of earthquake source properties and fault zone structure along an oceanic-continental transform margin. This ship time request includes the second of two OBS deploy/recovery cruises and will have the goal of recovering 28 US broadband OBS and 34 Canadian OBS (new CA pool) in late summer 2021, with a departure/return port of Ketchikan, AK. Deployment will have been completed by Canadian Vessel R/V Tulley (not included in this request).
Each cruise will be staffed by two PIs (Likely Roland and Walton) in addition to the regular OBSIP and technical support staff. Also, we plan to open the programs to fill a few additional berths with undergraduate or graduate students.
Gravity, magnetics and bathymetry will be collected along the deployment transit track. |
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Summary of Facility Requirements: |
The recovery of the 28 (US) and 34 (CA) OBS will be most efficient if organized over two legs, to allow for OBS Technical personnel from two national groups to disembark and reload. We propose to recover the OBS using a global-class vessel available on the west coast. The Thompson or Sikuliaq are viable options. We require a vessel with sufficient deck space to accommodate up to 40 OBS’s, but do not plan to use any of the US shallow water TRM instruments. We require dry/wet lab space for staging the instruments and a large crane or A-frame for recovering instruments. Multibeam and gravity capability will provide important ancillary data. |
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Summary of other requirements and comments: |
We have calculated that the recover of US instruments will require 5 days of ship time, including transit to Ketchikan, Alaska, and that recovery of the Canadian instruments will require 6 days of ship time. This time includes 15% contingency time and would allow for the personnele swap.
The passive source OBS legs of this project could be coordinated in concert with active source shooting that is accompanying the passive observations, and is being led by coPI Roland. A ship time request for the R/V Langseth has been submitted by the PI Worthington, UNOLS Project ID #: 106013. |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1009705 |
Created By: |
Emily Roland |
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Date Last Modified: |
9/8/2020 8:31:00 PM |
Date Submitted: |
1/22/2018 2:26:00 PM |
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Year: |
2022
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Ship/Facility: |
Sikuliaq
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Optimum Start Date:
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8/1/2022 |
Dates to Avoid: |
Sea conditions will likely prohibit OBS recovery in Fall and Winter months. |
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Earliest Start Date: |
8/20/2022 |
Multi-Ship Op: |
No |
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Latest Start Date: |
10/15/2022 |
Other Ship(s): |
For the OBS recovery leg, there will not be multi-shop operations, however for the Active source and deployment legs, this will be necessary (See project 921237). |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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11 |
1 |
1 |
3 |
16 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
No repeating cruise is necessary. |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
We require a global (preferably) or ocean class vessel that is operating in the NE Pacific in 2021.
The Thompson or Sikuliaq would be ideal vessels for this work. OBS recovery time has been calculated assuming rise rates and recovery time specified by OBSIP instrument planning guidelines, transit between stations, and 15% contingency time. This includes transit to the first station, as well as a port stop between US and Canadian instrument recoveries, planned for Ketchikan, AK, to swap OBS engineering personnel. Although not entirely necessary, in case of rough weather conditions, a heave compensating winch may be useful for instrument recovery. |
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Short Description of Op Area
for use in schedules: |
SE Alaska |
| Description of Op Area: |
continental shelf and slope offshore SE Alaska and British Columbia |
| Op Area Size/Dia.: |
240 |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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52.47° N
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132.156° W
map
52° 28.2' N
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132° 9.36' W
map
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Ending
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56° 16.8' N
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135° 44.4' W
map
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Show Degrees Minutes |
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Foreign Clearance Required? |
Yes |
Coastal States:
Canada |
 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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Yes |
If yes, have you applied for the necessary permits through your export control office?
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Yes |
| 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.) |
Ocean Bottom Seismometers - will be handled by OBSIC |
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Requested Start Port |
Intermediate Port(s) |
Requested End Port |
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Ketchikan, AK, USA |
Ketchikan, AK, USA |
Ketchikan, AK, USA |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
It is possible that Canadian OBS team will prefer to demobilize in Prince Rupert. An approximately 12 hour transit from Ketchikan to Prince Rupert would be included in currently budgeted contingency time. |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Emily Roland, WWU-geol |
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# in Science Party |
8 |
# 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 |
Science party will include PI team, graduate students and at least 2 OBSIP Technicians and/or 2 Canadian Technicians. |
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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 |
| 1 PI-Provided Vans - briefly describe | MOCNESS | | |
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Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling. |
OBSIP may choose to bring a operational Van for recovery, TBD.
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
Recovery of OBSIC OBS and Canadian Broadband Pool will be primary goal of this cruise. |
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