My Cruise

Ship

R/V Atlantis

Vehicles

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: Astoria on Sep 15, 2014

Arrival: Astoria on Sep 20, 2014

Mobilization Date: Sep 13, 2014

Demobilization Date: Sep 21, 2014

Supporting documentation:

»032514-01DP.pdf

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.

Pre-cruise planning meeting: Teleconference

Stations:

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

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

Funding Agency: NSF #OCE-1249876

- added NSF #OCE-1249876 on Apr 15, 2014 12:57 PM by
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R/V Atlantis

Shipboard Equipment

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

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

Will you be using Ultra-short baseline (USBL) navigation for other than Alvin operations? 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.



Wire Notes: TBD for launch of packages and launch/recovery of Wave Glider.

Slip ring required? no	Number of conductors:
Non-standard wire required? no	Type:
Traction winch required? no	Describe:

Other Science Vans:

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: 
Date Submitted: Apr 15, 2014 1:10 PM