Ship Request

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  Aleutian GPSA  -  2018  -  Sally Ride  
  Project Information  
Project Title: Collaborative Research: Measuring strain along the Aleutian subduction zone trench to better constrain seismic and tsunami hazard Project Status: Submitted
Principal Investigator: Spahr C. Webb, LDEO Project Institution: LDEO
Project ID: 105412 Version #: 4
Date Submitted: 8/4/2016 12:15:00 PM Created By: Spahr C. Webb
Date Last Modified: 1/4/2021 9:03:00 PM URI Serial #: None
Funding Agencies: NSF/OCE/MGG - 1656413 - Funded
Summary of Field Work: We will deploy 9 transponders for GPSA measurements to measure strain accumulation at three sites south of the Aleutian Peninsula. A waveglider system will be used to survey the transponders on the seafloor. The transponders will be recovered two years later. We will deploy a waveglider twice to determine the exact position of the sites two years apart to measure the rate of strain accumulation across the Aleutian subduction zone to better constrain seismic tsunami risk.
Summary of Facility Requirements: We require several CTD casts and a crane to lift the transponders, waveglider and benchmarks over the side of the ship and to recover the transponders and waveglider at the end of the deployment. We require a multibeam sonar to place the transponders onto appropriate sea floor regions.
Summary of other requirements and comments: We originally specified the Sikuliaq because it is ported in Alaska, but any ship with crane, CTD and multibeam sonar would work.

The first year GPSA deployments can be done in conjunction with the Alaska OBS community experiment during the deployment leg for the LDEO OBSs by adding three days to this leg. This assumes the R/V Sally Ride or larger ship is used.
Ship Request Identification
Type of Request: Collaborative Ship Use Request Status: Submitted
Request ID: 1008758 Created By: Spahr C. Webb
Date Last Modified: 9/9/2020 12:19:00 AM Date Submitted: 8/4/2016 12:15:00 PM
Requested Ship, Operating Days and Dates
Year: 2018 Ship/Facility: Sally Ride
Optimum Start Date: 6/15/2018 Dates to Avoid: Need to deploy the transponders on the seafloor early enough in the weather year to permit a one month long waveglider deployment in good weather.
Earliest Start Date: 6/1/2018 Multi-Ship Op: No
Latest Start Date: 7/15/2018 Other Ship(s): Assume Sally Ride or larger ship for operations to be conducted on same leg as OBS deployments for Alaska Community experiment during LDEO OBS deployment leg.

Operating Days Needed: Science Days Mob Days De-Mob Days Estimated Transit Days Total Days
3 0 0 0 3
Repeating Cruise?
(within same year)
No Interval:   # of Cruises:  

Description of Repeating cruise requirements: GPSA deployment to be conducted during the LDEO OBS deployment of the Alaska OBS community experiment NSF proposal OCE-1654568 Adds three days to cruise leg.
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations:
Cruise needs to be an earlier enough in the summer to permit a month long waveglider deployment in good weather after the transponder deployments (starting at the end of deployment cruise). The waveglider will be recovered using a small fishing vessel about one month after the cruise. A different ship from the Sikuliaq could be used for this cruise.
Work Area for Cruise
Short Description of Op Area
for use in schedules:
SW Alaska
Description of Op Area: South of the Aleutian peninsula between Sanak Islands and Kodiak.
Op Area Size/Dia.: 150
  Lat/Long Marsden Grid Navy Op Area
54.7° N / 156.5° W map
196 map
NP06 map
54° N / 160.3° W map
197 map
NP05 map
  Show Degrees Minutes    
Foreign Clearance and Permitting Requirements
Foreign Clearance Required? No 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.)
No special clearances required.
Port Calls
Requested Start Port Intermediate Port(s) Requested End Port
Kodiak, AK, USA None Kodiak, AK, USA
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops
Kodiak is the closest port to the working area with airport and good shipping.

 Important Info on Working in Foreign Ports

Science Party
Chief Scientist: Spahr C. Webb, LDEO
# in Science Party 6 # 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 only require crane, CTD operator and multibeam.
Instrumentation Requirements That Impact Scheduling Decisions
Selected Dynamic PositioningUnselected ADCPSelected MultibeamUnselected 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 workUnselected 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.

The work will involve wireline deployment of 9 GPSA transponder benchmarks on seafloor near trench, but in less than 3000m of water at three sites. After each set of three transponders is deployed, we will deploy a waveglider system for a period of time to survey in benchmarks, or else use a ship board system to survey in benchmarks. Expect each site to require one full day of operations. Transit between sites will be part of OBS deployment operations.

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.

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