Woods Hole Oceanographic Institution

Cruise Planning Synopsis


AT26-04

Ship

R/V Atlantis

Vehicles

ROV Jason

Cruise Party

Harlan Johnson: Chief Scientist, Principal Investigator
University of Washington Seattle, WA USA 98195
+1 206 543 8474
johnson@ocean.washington.edu

Departure: Jul 31, 2013

Astoria Oregon

Arrival: Aug 26, 2013

Astoria Oregon

Operations Area

: box defined by latitudes 46N and 47 125W and 126W “ the Washington state continental margin.
Lat/Lon: 46° 0.0′ N / 125° 0.0′ W
Depth Range: 200 / 3000
Will the vessel be operating within 200 NM of a foreign country? no clearance req. USA EEZ
Are visas or special travel documents required? no

Science Objectives

We propose to conduct a comprehensive study of the thermal environment of the Cascadia Subduction Zone (CSZ) within the NSF GeoPRISM Corridor off the Washington margin.   The primary goal of this study is to determine the temperature structure of Juan de Fuca basement and overlying accretionary prism sediments that comprise the CSZ deformation zone with a transect of systematic heat flow and fluid flux profiles off the Washington Coast.  Temperature is a primary controlling factor of many subduction zone processes, particularly at active margins that are subject to large magnitude, megathrust earthquakes as the CSZ offshore WA, and a comprehensive heat flow study of the Cascadia Corridor is a fundamental parameter required by the Scientific Plan of the GeoPRISM Program.  Compilation of existing data demonstrate that the segment of the CSZ off-shore WA is dramatically under-measured, with only sparse heat flow stations made during programs focused on other scientific goals.  We are proposing to acquire a systematic profile of heat flow and fluid flux measurements along a corridor of the accretionary prism on the Washington margin at 47°N, from west of the deformation front on the abyssal plain to just below the shelf edge at 500 m depth – in order to make the first quantitative estimates of the thermal structure of the ‘locked zone’ of the Cascadia megathrust.  To obtain an accurate estimate of conductive heat flux from the challenging environment of the accretionary prism, we plan redundant methods to obtain both thermal and fluid flux measurements along a 2.5 D profile of the margin at a single latitude. In this profile we would use thermal blankets suitable for impenetrable sub-stratum, continuous fluid flow meters, multi-core deployments for sediment pore water chemistry and thermal gradient measurements, and Jason-II heat flow probes. 

Science Activities

  1. Jason II dives along the WA margin, which will deploy 14 thermal blankets and 11 fluid flux meters sequentially at 12 stations along the 100 km length of the survey area (see map).   Jason II activities include (a) thermal blanket deployments and recoveries, (b) methane fluid flux instrument deployment and recoveries, (c) Jason thermal probe measurements, (d) Jason video survey using brow cam and HD cameras, (e) Jason hull-mounted CTD measurements, and (f) small bio-box mounted on Jason
  2.  Additional Jason Equipment needed; TWO working elevators, to transport equipment to/from seafloor

 3. ATLANTIS equipment needed.  EM122 swath bathymetry system with ability to measure bathymetry, acoustic backscatter, and water column images.    3.5 kHz Knudsen sounder system with ability to download and exam data in real time on cruise.   CTD with 24 bottle water sampling rosette.   Winch/wire capable of deploying OSU heat flow probe and OSU multi-corer between Jason dives.

Additional Info

Pre-cruise Planning Meeting: Teleconference
Meeting Notes: HPJ: I am available most weekdays April/May/June, 10 AM to 6 PM, PDT.

Stations:

Supporting documentation:

»Order_of_Operations.pdf
»Atlantis_Working_Decks_Johnson.jpg
»Long_Heat_Flow_Probe.pdf
»Hearn_et_al_May_2013_revised_G_cubed-1.pdf
»survey_area.pdf
»Pre-Cruise_Meeting_Agenda_AT26-04_Johnson.docx
»Johnson_thermal_blanket.docx

Funding

Funding Agency: NSF
Grant or contract number: 1144164

Scientific Instrumentation for R/V Atlantis

Other Science Vans:

Shipboard Equipment

Bathymetry System 12 kHz
Bathymetry System 3.5 kHz
ADCP 75 kHz
Science Underway Seawater System
Multibeam
Fume Hood
Navigation - Position

Shipboard Communication

Basic Internet access via HiSeasNet

CTD/Water Sampling

911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
SBE43 oxygen sensor
Seapoint STM turbidity sensor
Wet Labs C*Star transmissometer (660nm wavelength)
Wet Labs ECO-AFL fluorometer

Critical CTD Sensors

MET Sensors

Barometric Pressure
Air temperature
Relative Humidity
Wind speed and direction

Sediment Sampling

Gravity corers
Multi-core

Sample Storage

Climate Controlled Walk-in
Freezer -70°C 25 cu. ft.
Freezer -70°C 3.2 cu. ft. ea.
Refrigerator 8.6 cu. ft.
Scientific Walk-in Freezer
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 Notes:
Winch Notes: OSU heat flow probe, multi-corer and gravity corer will be used

Wire use and application

Trawl Winch with .681 fiber optic
Hydro Winch with .25" hydro wire
CTD Winch with .322" Electro-mechanical wire
Trawl Winch with .680 Coax
Winch Notes:

Standard Oceanographic Cables

Slip ring required? no
Non-standard wire required? no
Traction winch required? no

Portable Vans

Chemical Storage Van
Isotope Van
Science Van 1
Type/size: Jason Vans Location:
Water: Power:

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: Jason , CTD, Coring
OSU heat flow probe, multi-corer and gravity corer will be used

OSU may/may not need to bring a small tool van; I am discussing with them about the possibility (if deck space is tight) the possibility of leaving van on Astoria dock.



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?yesDescribe deployment method and quantity:

Radioactive Material

Radioiosotopes:no

Additional Information

Is night time work anticipated on this cruise?yesSpecialized tech support (Seabeam, coring, other):
Jason ops, Multibeam and or coring when Jason is on board.

OSU coring technician will be part of science party.

Other required equipment and special needs:

):  multibeam surveys, multi-corer, gravity coring, heat flow probe

OSU may/may not need to bring a small tool van; I am discussing with them about the possibility (if deck space is tight) the possibility of leaving van on Astoria dock.

Scientific Instrumentation for HOV Jason


Current Chart(s):

<Could not load the preview of ROV Jason Information data >

Site Survey

Will you provide detailed charts of the work area(s)?yes
If no, willl you need R/V Atlantis to generate maps of the work area(s)?no
Will you need post-dive maps of the work area generated?no

Navigation

Will you be using Long Base Line (LBL) navigation? no
How many nets? 0
How many tansponders? 0
Will you be using Ultra-short baseline (USBL) navigation?yes
Will you be using Doppler/GPS navigation? yes
What type of samples do you expect to collect?Sediments, infrequent biology.

Elevators

Will you be using elevators to transport samples to the surface?yes
If yes, how many would you anticipate? 2

Science Supplied Equipment

Are you supplying equipment to be used on HOV Jason yes
Has this equipment been used on Jason before? yes
Please give a brief description of the equipment, its intended purpose, the cruise # it was last used on if any and its deployment method.

Thermal blankets, deployed.  Fluid flux meters, deployed.

 August, 2011 Atlantis/Jason II cruise to Endeavour Ridge.

Fluid flux meters are ambient pressure.   Data loggers are rated >4000 meters and use previously on Jason.    

Does this equipment use an external pressure housing? yes
If yes, what is the pressure rating?
and test pressure?
Has the pressure housing been tested per Alvin Pressure Test requirements? yes
Pressure housing schematic with dimensions and include air and water weights.
Does the equipment have an associated computer or control panel for remote operation from the personnel sphere? no
Air weight of this equipment?
Water weight of this equipment?

Checklist & Notes

Checklist

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

Master R/V ATLTANTIS
Attn: Scientist's Name - AT26-04
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:

Herb Florer, Director, Seaports Division
(503) 741-3336 (office)
(503) 468-8182 (cell)
herb@portofastoria.com

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

 Port of Astoria Tel:  (503) 741-3300

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


Note: Agent and WHOI contacts should be copied on all communications.  It is requested that shipment information of any equipment be communicated to the Agent and WHOI contacts

Countries:
USA
Notes:
n/a
Isotope Use Approval: no
Isotope Notes:
SCUBA Diving: no

Checklist

SSSG Tech:
Rob Hagg, Dave Simms
Astoria mob and demob.