Woods Hole Oceanographic Institution

Cruise Planning Synopsis


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AT15-63

Ship

R/V Atlantis

Vehicles

HOV Alvin

Cruise Party

John Sinton: Chief Scientist, Principal Investigator
University of Hawaii 1680 East-West Road Honolulu, HI USA 96822
+1 808 956 7751
sinton@hawaii.edu

Departure: Mar 15, 2010

Puerto Ayora, Galapagos, Ecuador

Arrival: Apr 14, 2010

Puerto Ayora, Galapagos, Ecuador

Operations Area

Galapagos Spreading Center
Lat/Lon: 2° 0.0′ N / 94° 30.0′ W
Depth Range: 1500 / 3000
Will the vessel be operating within 200 NM of a foreign country? Ecuador
Are visas or special travel documents required? no

Science Objectives

Map and sample lava flow fields in two specific areas along the east-west trending Galapagos Spreading Center.  Each area is about 40 km x 15 m in size.  Within each area we are specifically interested in the relationship of small seamount strucures to low-lying seafloor adjacent to them.  We will attempt to determine if seamounts are formed during the same or different eruptions from those that produced non-seamount lava flows.  In addition we will map faults and fissures in the areas of interest.

Science Activities

Alivin dives, ~13 in each area.  During nights we will use Sentry, primarily in survey mapping mode in order to obtain high-resolution bathymetry and magnetics data.  We expect to deploy Sentry every night if possible.  In addition we will deploy TowCam on about half the nights, to obtain bottom photographs and wax cores in selected areas.  Possible alternative night-time activities in place of TowCam include rock dredging and wax coring.

Additional Info

Pre-cruise Planning Meeting: Teleconference
Meeting Notes: Jan 5th

Stations:

  Station 1
  Distance: 300
  Days: 14 days
  Latitude: 2° 37.0’ N
  Longitude: 95° 0.0’ W

Supporting documentation:

Funding

Funding Agency: NSF
Grant or contract number: OCE-0849813

Scientific Instrumentation for R/V Atlantis

Shipboard Equipment

Bathymetry System 3.5 kHz
Multibeam
Sippican XBT System (Mark 21)
Gravimeter
12 kHz Pinger for Wire Use
Transponder Navigation - Sonardyne USBL
Relay Transponder for Wire Use
Navigation - Heading
Navigation - Position

Critical CTD Sensors

Sediment Sampling

Gravity corers
Rock dredges
Box corer

Navigation

Will you be using Long Base Line (LBL) navigation? yes
How many nets? 2
How many tansponders? 0
Will you be using Ultra-short baseline (USBL) navigation?yes

Winches

Hydro Winch with .25" hydro wire
Trawl Winch with 9/16th trawl wire
Trawl Winch with .681 fiber optic
Winch Notes: We will be using TowCam in fiber-optic mode so we need the necessary winch, wire, rings etc that go with that.  In addition we might do some rock dredging, presumably using the trawl winch.  We might also want to take some wax cores which I assume uses the hydro winch, but I'm not sure about that.

Standard Oceanographic Cables

  Instrument(s) Instrument Weight(s) Maximum Depth
.681 fiber optic: TowCam
Slip ring required? no
Non-standard wire required? no
Traction winch required? no

Specialized Deck Equipment

Mooring Deployment/Recovery Equipment Required: no Type: 
Cruise Specific Science Winch Required: no Type: 
Nets Required: no Type: 

Over the Side Equipment

Will you be bringing any equipment (winches, blocks, etc.) that lowers instruments over the side? no

Special Requirements

Elecrical Power: no Identify 
Equipment Handling: no Identify: 
Inter/intraship Communications: no Identify: 
Science Stowage: no Identify: 
Water: no Identify: 

Additional Cruise Items/Activities

Explosive Devices:no
Portable Air Compressors:no
Flammable Gases:no
Small Boat Operations:no
SCUBA Diving Operations:no

Hazardous Material

Will hazardous material be utilized?no
Describe deployment method and quantity:

Radioactive Material

Radioiosotopes:no

Additional Information

Is night time work anticipated on this cruise?yes
Specialized tech support (Seabeam, coring, other):
The principal night program is Sentry, and we expect to deplooy it every night if possible.  In addition we plan to deploy TowCam in concert with Sentry on some nights.  Seabeam surveys are another possibility for night work, as are rock dredging and/or wax coring.
Other required equipment and special needs:
EH Sensor for Sentry
No CTDs
Dan's wax core
XBTs for multibeam calibration only
-science has asked to leave samples/rocks onboard

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Checklist & Notes

Checklist

U.S. Customs Form: no
Diplomatic Clearance: no
Date Submitted:
Date Approved:
Agent Information:
Countries:
Notes:
Isotope Use Approval: no
Isotope Notes:
SCUBA Diving: no

Checklist

SSSG Tech: