Woods Hole Oceanographic Institution

Cruise Planning Synopsis


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AT26-20

Ship

R/V Atlantis

Cruise Party

C. David Chadwell: Chief Scientist, Principal Investigator
University of California San Diego La Jolla, CA United States 92093-0205
+1 858 534 2663
cchadwell@ucsd.edu

Departure: Sep 15, 2014

Astoria

Arrival: Sep 20, 2014

Astoria

Operations Area

Offshore Washington State, Offshore Newport Oregon
Lat/Lon: 45° 0.0′ N / 125° 0.0′ W
Depth Range: 1000 / 3000
Will the vessel be operating within 200 NM of a foreign country? No, south of Canadian EEZ.
Are visas or special travel documents required? no

Science Objectives

The purpose of this proposal is to initiate seafloor geodetic measurements of plate
motion in the Cascadia Subduction Zone. The proposal is for a three-year effort to measure plate motion at  sites offshoe the state of Washington  and offshore Newport Oregon. Sites will be located on the incoming plate to measure the present day convergence between the Juan de Fuca and North American plates and a site will be located on the continental slope of NA to measure the elastic deformation due to stick-slip behavior on the megathrust fault. These new seafloor data will constrain existing models of slip behavior that presently are poorly constrained by land geodetic data 100 km from the deformation front.

Science Activities

Purpose of cruise is to deploy a total of eight free-fall packages with four units deployed offshore the coast of Washington State nominally at 46-30N, 126-28W and and four units deployed offshore Newport Oregon at nominally 44-40N, 125-10W.  Each package consists of Sonardyne Fetch transponder on a concrete benchmark and an float package that can be released by acoustic command from the surface.  Packages are released at the sea surface and free fall to the sea floor.  While on station deploy Wave Glider for data collection, then recover.

Additional Info

Pre-cruise Planning Meeting: Teleconference

Stations:

  STATION 1
  Distance: null
  Days: 2
  Latitude: 46° 30.0’ N
  Longitude: 126° 28.0’ W

  Station 2
  Distance: null
  Days: 2
  Latitude: 44° 40.0’ N
  Longitude: 125° 10.0’ W

Supporting documentation:

»chadwell_deck_plan.pdf
»July_25_chadwell_launch_package.pdf
Notes: The 8 bottom sensor packaages will be deployed and set on the bottom.  Once that is completed Half of the package will be released and will float to surface for recovery.  

Ships crane will do both deployement and recovery.

See "July 25 Chadwell launch pacakage"  diagram attachment.

Funding

Funding Agency: NSF
Grant or contract number: OCE-1249876

Scientific Instrumentation for R/V Atlantis

Shipboard Equipment

Bathymetry System 12 kHz
Bathymetry System 3.5 kHz
Multibeam
Navigation - Heading
Navigation - Position
Transponder Navigation - Sonardyne USBL

Shipboard Communication

Basic Internet access via HiSeasNet
Is there a need to receive data from shore on a regular basis?
Is there a need to transfer data to shore on a regular basis?

CTD/Water Sampling

911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors

Critical CTD Sensors

Storage Notes:

Navigation

Will you be using Long Base Line (LBL) navigation? no
How many nets? null
How many tansponders? null
Will you be using Ultra-short baseline (USBL) navigation?no

Navigation

GPS
LBL
USBL
Navigation Notes: Dynamic positioning required during deployments.    Use Altlantis Sonardyne system to talk to our Sonardyne Fetch units to determine status on sea floor.

Winches

CTD Winch with .322" Electro-mechanical wire
Winch Notes: TBD for launch of packages and launch/recovery of Wave Glider.
Winch Notes: TBD for launch of packages and launch/recovery of Wave Glider.

Standard Oceanographic Cables

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? yes
Details: TBD for launch of packages and launch/recovery of Wave Glider.

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:yes
SCUBA Diving Operations:no

Hazardous Material

Will hazardous material be utilized?yes
Describe deployment method and quantity:
Lithium batteries.

Radioactive Material

Radioiosotopes:no

Additional Information

Is night time work anticipated on this cruise?yes
Specialized tech support (Seabeam, coring, other):
TBD for launch of packages and launch/recovery of Wave Glider.
Other required equipment and special needs:

Checklist & Notes

Checklist

U.S. Customs Form: no
Diplomatic Clearance: no
Date Submitted:
Date Approved:
Agent Information:

United States (Astoria, OR)

Master R/V ATLANTIS
Attn: Scientist's Name - AT26-20
c/o Vasile Tudoran Transport
819 Ohio Ave.
Long Beach, CA 90804

Contact: Vasile Tudoran
Phone: (562) 882-5590
Fax: (562) 434-9800
Email: vtudoran@aol.com

**NOTE
All packages and shipments should be sent to the following address with shipping notification sent to WHOI contacts, Ship's Agent and Esther Jones, contact information below:

Tami Herman, Facilities Manager / Finance Department
(503) 741-3332 (office)
(503) 298-0654 (cell)
(503) 741-3345 (fax)
tami@portofastoria.com

 Esther Jones, Administrative Assistant
(503) 741-3300 (Office)
admin@portofastoria.com

Port of Astoria Direct Line:  (503) 741-3300

Master R/V ATLANTIS
Attn: Scientist's Name - AT26-20
c/o Port of Astoria
#10 Pier One
Suite 308
Astoria, OR   97103

Note: Agent and WHOI contacts should be copied on all communications.  Shipping information for any equipment and supplies should be communicated to the Agent and to WHOI contacts.

Countries:
USA
Notes:
None req.
Isotope Use Approval: no
Isotope Notes:
none
SCUBA Diving: no

Checklist

SSSG Tech:
Dave Simms and Ellen Roosen
Mobe in Astoria Sept 13 & 14
Demobe Astoria Sept 21.