Ship Request

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  Cascadia Subduction  -  2020  -  Marcus Langseth  
  Project Information  
Project Title: Collaborative Research: Illuminating the Cascadia plate boundary zone and accretionary wedge with a regional-scale ultra-long offset multi-channel seismic study Project Status: Submitted
Principal Investigator: Suzanne M. Carbotte, LDEO Project Institution: LDEO
Project ID: 106030 Version #: 1
Date Submitted: 3/27/2018 11:23:00 AM Created By: Suzanne M. Carbotte
Date Last Modified: 8/23/2018 11:06:00 AM URI Serial #: None
Funding Agencies: NSF/OCE/MGG - 1827452 - Funded
Summary of Field Work: We propose a 40 day expedition to conduct a 2-D MCS seismic experiment of the Cascadia margin. A suite of 20 margin-crossing lines is planned spaced 50-100 km apart. Lines will be ~100-200 km long each and will extend as close to the shoreline as can be safely maneuvered (~15 km). The survey plan will also include one continuous strike line along the continental shelf.
Summary of Facility Requirements: The proposed study will make use of Langseth’s 15 km solid-state digital streamer and Langseth’s airgun array configured as a 6600 cu in tuned airgun array towed at 12m depth shot at a 37.5 m intervals.
Summary of other requirements and comments: Multibeam bathymetry, Knudsen 3.5 kHz sub-bottom profiler data, gravity and magnetics will be acquired throughout the survey,
Ship Request Identification
Type of Request: Primary Ship Use Request Status: Submitted
Request ID: 1009719 Created By: Suzanne M. Carbotte
Date Last Modified: 3/27/2018 11:23:00 AM Date Submitted: 3/27/2018 11:23:00 AM
Requested Ship, Operating Days and Dates
Year: 2020 Ship/Facility: Marcus Langseth
Optimum Start Date: 6/1/2020 Dates to Avoid: September to May due to poor weather in this region
Earliest Start Date: 6/1/2020 Multi-Ship Op: No
Latest Start Date: 8/1/2020 Other Ship(s):

Operating Days Needed: Science Days Mob Days De-Mob Days Estimated Transit Days Total Days
36 2 1 1 40
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:
Work Area for Cruise
Short Description of Op Area
for use in schedules:
Cascadia SZ
Description of Op Area: Cascadia subduction zone from Mendocino to offshore Vancouver Island
Op Area Size/Dia.: 660
  Lat/Long Marsden Grid Navy Op Area
51° N / 128° W map
193 map
NP06 map
40° N / 124° W map
157 map
NP09 map
  Show Degrees Minutes    
Foreign Clearance and Permitting Requirements
Foreign Clearance Required? Yes Coastal States:

 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.)
Canadian clearance will be required for the offshore Vancouver Island portion of the survey. Marine sanctuary permit may be required for the near shore portion of Washington margin lines. Marine mammal clearance will be needed for the expedition.
Port Calls
Requested Start Port Intermediate Port(s) Requested End Port
Astoria, OR, USA None, Astoria, OR, USA
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops

 Important Info on Working in Foreign Ports

Science Party
Chief Scientist: Suzanne M. Carbotte, LDEO
# in Science Party 22 # of different science teams 1 # Marine Technicians to be
provided by ship operator:
(include in science party total)
Explanation of Science Party Requirements and Technician Requirements Not sure how many technicians will be required, but need full team for 2D long-streamer operations.
Instrumentation Requirements That Impact Scheduling Decisions
Unselected Dynamic PositioningUnselected ADCPSelected MultibeamSelected Seismic
Unselected Dredging/Coring/Large Dia. Trawl WireUnselected Stern A-frameUnselected Fiber Optic (.681)Unselected 0.680 Coax Wire
Unselected SCUBA DivingUnselected Radioisotope use - briefly describeUnselected NO Radioisotope use/Natural level workSelected Other Operator Provided Inst. - Describe
0 PI-Provided Vans - briefly describe Unselected MOCNESS  
Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling.

Need current capability of R/V Langseth to acquire long streamer deep penetration multi-channel seismic data. Also we plan to acquire multibeam bathymetry, gravity, magnetics and 3.5 kHz subbottom data.

Major Ancillary Facilities (that require coordination of schedules with ship schedule)
Unselected Helicopter Ops (USCG)Unselected Twin OtterUnselected Unmanned Aerial Systems (UAS) 
Autonomous Underwater Vehicle (AUV)
Unselected Other AUVUnselected Sentry  
Coring Facility
Unselected Jumbo Piston CoringUnselected Large Gravity Core Unselected MC800 multicorer w/ MISO camera/telemetryUnselected OSU Coring Facility (MARSSAM)
Unselected Other Large Coring FacilityUnselected WHOI Long Core  
Human Occupied Vehicle (HOV)
Unselected AlvinUnselected Clelia (HBOI)Unselected JSL I & II (HBOI)Unselected Other HOV
Other Facility
Unselected MISO Facility - deep-sea imagingUnselected Other FacilityUnselected Potential Fields Pool Equipment 
Remotely Operated Vehicle (ROV)
Unselected JasonUnselected Other ROV  
Seismic Facility
Unselected Ocean Bottom Seismograph Instrument Center (OBSIC)Unselected Ocean Bottom Seismograph Instrument Pool (OBSIP)Unselected Ocean-Bottom Seismometer Program (UTIG)Unselected Other Seismic/OBS Facility
Unselected PASSCALUnselected Portable MCS groupUnselected Portable MCS/SCS groupUnselected U.S. Geological Survey Ocean Bottom Seismometer Facility (USGS at WHOI)
Towed Underwater Vehicle
Unselected ARGO IIUnselected Hawaii MR1 (HMRG)Unselected IMI12 (HMRG)Unselected IMI120 (HMRG - formerly DSL 120A)
Unselected IMI30 (HMRG)Unselected Other Towed Underwater VehicleUnselected Towfish 
UNOLS Van Pool
Unselected AUV Lab Van #1Unselected Clean Lab VanUnselected Cold Lab VanUnselected General Purpose Lab Van
Unselected Radioisotope Lab VanUnselected Wet Lab Van  
UNOLS Winch Pool
Unselected Mooring SpoolerUnselected Portable WinchUnselected Turn Table 
Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems.
Need 15 km streamer and 6600 cu in tuned source array.

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