Ship Request

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  Old Rurutu hotspot  -  2012  -  Melville  
  Project Information  
Project Title: Collaborative Research: Using the Rurutu hotspot to evaluate mantle motion and absolute plate motion models Project Status: Submitted
Principal Investigator: Jasper Konter, UH_SOEST Project Institution: UTEP
Project ID: 103037 Version #: 1
Date Submitted: 8/4/2011 3:13:00 PM Created By: Jasper Konter
Date Last Modified: 6/13/2012 2:11:00 PM URI Serial #: None
Funding Agencies: NSF/OCE/MGG - 1153959 - Funded
Summary of Field Work: We propose to obtain new age and geochemical data for the critical region around the poorly characterized Rurutu hotspot bend. This data will help define a third Pacific hotspot track that will help deconvolve plate from plume motions between 40 and 80 Ma. Specifically, we propose to test the following two hypotheses: (1) The Rurutu hotspot is a long-lived, geochemically-distinct hotspot like the Hawaiian and Louisville hotspots; and (2) the Rurutu hotspot exhibits a pronounced bend, and the timing of the Rurutu bend matches the timing of the (pronounced) Hawaii-Emperor and (less pronounced) Louisville bends at ~50 Ma. To test these hypotheses we propose to: (1) Dredge 20 key volcanoes at the Rurutu hotspot bend--defined by the intersection of the Tuvalu and Samoa chains--to determine its precise location and timing; (2) Geochemically characterize 60 samples to evaluate a link to the modern-day Rurutu hotspot; (3) Compare the predicted Rurutu age progression from various APM models to 45 new 40Ar/39Ar ages to be measured from these seamounts.
Summary of Facility Requirements:  
Summary of other requirements and comments:  
Ship Request Identification
Type of Request: Primary Ship Use Request Status: Submitted
Request ID: 1004748 Created By: Jasper Konter
Date Last Modified: 8/4/2011 3:13:00 PM Date Submitted: 8/4/2011 3:13:00 PM
Requested Ship, Operating Days and Dates
Year: 2012 Ship/Facility: Melville
Optimum Start Date: 8/1/2012 Dates to Avoid: November through April is officially hurricane season around Samoa, so we would prefer a summer, early fall, or late spring schedule. Large swell from large storms affect the possible headings for dredging operations.
Earliest Start Date: 8/1/2011 Multi-Ship Op: No
Latest Start Date:   Other Ship(s):

Operating Days Needed: Science Days Mob Days De-Mob Days Estimated Transit Days Total Days
31 0 0 0 31
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:
We have chosen Melville because of its excellent multibeam performance in rough seas, and our and the crew's dredging experience on this ship. However, Revelle or Kilo Moana would be good alternatives.
Work Area for Cruise
Short Description of Op Area
for use in schedules:
Description of Op Area: This cruise focusses on dredging the slopes of major seamounts and islands along the Tuvalu Islands, and along the seamounts west of Samoa.
Op Area Size/Dia.:  
  Lat/Long Marsden Grid Navy Op Area
2° S / 174° E map
318 map
SP01 map
14° N / 170° W map
54 map
NP11 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.)
Port Calls
Requested Start Port Intermediate Port(s) Requested End Port
Majuro Atoll, Marshall Islands None Apia, Western Samoa
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: Jasper Konter, UH_SOEST
# in Science Party 15 # 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 This is a dredging and multibeam mapping cruise, thus we request two experienced dredging technicians for around the clock dredging operations.
Instrumentation Requirements That Impact Scheduling Decisions
Selected Dynamic PositioningUnselected 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 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.

We need a ship that has good multibeam performance under sometimes rough sea conditions in order to identify dredge targets. Dredging will also be challenging in the same weather conditions, so we request spare equipment including multiple dredges in order to successfully finish this dredging cruise. We also will collect magnetics. In addition, we will need some space to store the dredged rock samples (likely 2-3 pallets worth)

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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