Ship Request

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  Gofar TF Earthquakes  -  2019  -  Global  
  Project Information  
Project Title: Capturing 4D Variations in Stress, Slip, and Material Properties: The 2019-2021 Gofar Transform Fault Earthquake Prediction Experiment Project Status: Submitted
Principal Investigator: Margaret Boettcher, UNH Project Institution: UNH
Project ID: 106088 Version #: 16
Date Submitted: 2/13/2018 2:25:00 AM Created By: Margaret Boettcher
Date Last Modified: 7/30/2021 5:52:00 AM URI Serial #: None
Funding Agencies: NSF/OCE/MGG - 1832830 - Funded
Summary of Field Work: Field work will be focused on a 2 year ocean bottom seismometer (OBS) experiment on a transform fault that we know is nearing the end of its seismic cycle. We will deploy 23 strong motion or broadband OBSs and 28 short period OBSs to record earthquakes in the expected range of 0 < Mw < 6.2 in two back-to-back 1-year deployments. These observations will be used to investigate the mechanics of fault slip and earthquake physics. We will also map regions around the fault zone to link earthquake cycles to seafloor geology, fluid flow, and magnetics. This work will be accomplished during a set of three cruises, which include:
Cruise 1- (i) OBS deployments, including 23 strong motion/broadband and 28 short period instruments and (ii) rock dredging on Gofar TF and nearby Quebrada TF;
Cruise 2- (i) Recover and redeploy OBSs
Cruise 3- (i) Recover OBSs; (ii) deploy AUV Sentry for 13 dives to survey the seafloor and collect chemical sensor data; and (iii) Electromagnetic Surveys from a separately funded grant to Rob Evans (WHOI)
Summary of Facility Requirements: Our facility requirements include coordinating with OBSIP to obtain 28 short period OBS instruments and 23 strong ground motion and/or broadband OBS instruments. To support the deployment and recovery of the OBSs we will need a Hydro Winch, Dynamic Positioning, two vans, and we will have hazardous materials. We will need USBL beacon tracking ability to deploy the short period OBSs via wireline to enable ~10m position precision.

In addition, for the first cruise we will require the ability to rock dredge with a wire and winch for 3000-5000m depth, and for the third cruise we will need AUV Sentry and a CTD/rosette.
Summary of other requirements and comments: The timing of this project is tightly constrained by the expected occurrence times of two magnitude 6 earthquakes on the Gofar TF. To maximize our chances of success at capturing these events, we need the first cruise to happen in the late spring – summer of 2019 [this occurred in Nov/Dec 2019]. The second cruise would need to be approximately 12 months after the first one, to allow us to recover OBSs and replace batteries without any data gaps. The third cruise would need to be 12-16 months after the second cruise. These timing constraints will allow us to have continuous recording of the seismicity during the peak of the expected recurrence interval for the large earthquakes in our study area.
Ship Request Identification
Type of Request: Primary Ship Use Request Status: Submitted
Request ID: 1009841 Created By: Margaret Boettcher
Date Last Modified: 7/30/2021 5:52:00 AM Date Submitted: 2/13/2018 2:25:00 AM
Requested Ship, Operating Days and Dates
Year: 2019 Ship/Facility: Global
Optimum Start Date: 4/1/2019 Dates to Avoid: N/A
Earliest Start Date: 4/1/2019 Multi-Ship Op: No
Latest Start Date: 9/1/2019 Other Ship(s): N/A

Operating Days Needed: Science Days Mob Days De-Mob Days Estimated Transit Days Total Days
12 2 2 8 24
Repeating Cruise?
(within same year)
No Interval:   # of Cruises:  

Description of Repeating cruise requirements: N/A
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:
Gofar TF, EPR
Description of Op Area: Gofar Transform Fault, 4 degrees South on the East Pacific Rise
Op Area Size/Dia.: 200
  Lat/Long Marsden Grid Navy Op Area
4.6° S / 106.2° W map
310 map
SP03 map
3.8° S / 103° W map
310 map
SP03 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.)
Port Calls
Requested Start Port Intermediate Port(s) Requested End Port
Puerto Ayora, Galapagos Islands, Ecuador None, Puerto Ayora, Galapagos Islands, Ecuador
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops
Puerto Ayora is the closest port to our study area.

 Important Info on Working in Foreign Ports

Science Party
Chief Scientist: Jessica M. Warren, UDEL
# in Science Party 14 # 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 The science party will include scientists (3), students (6), an Earth Science teacher (1), and an OBSIP team (4). We will be deploying 51 OBSs and dredging. We plan to do these activities throughout the 24 hour day, which will also require two crane operators, including one with dredging experience.
Instrumentation Requirements That Impact Scheduling Decisions
Selected Dynamic PositioningSelected ADCPSelected MultibeamUnselected Seismic
Selected 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
2 PI-Provided Vans - briefly describe Unselected MOCNESS  
Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling.

We will be deploying 51 Ocean Bottom Seismometers and will need to coordinate with OBSIP. OBSIP will bring 2 vans.

Additionally, we require USBL beacons, a Hydro Winch, and XBT.

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)Selected 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 SpoolerSelected Portable WinchUnselected Turn Table 
Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems.
We require rock dredge capability with wire for 3000-5000 m water depth, along with a ship technician who has dredging experience.

And we require coordination with OBSIP.

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