My Cruise

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: Astoria Oregon on Jul 31, 2013

Arrival: Astoria Oregon on Aug 25, 2013

Mobilization Date: Jul 29, 2013

Demobilization Date: Aug 27, 2013

Supporting documentation:

»Johnson_thermal_blanket.docx

Operations Area: : box defined by latitudes 46°N and 47°N and longitudes 125°W and 126°W – 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? Yes, Canada (app due April 29, 2013)
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.

Pre-cruise planning meeting: Teleconference

HPJ: I am available most weekdays April/May/June, 10 AM to 6 PM, PDT.

Stations:

Funding Agency: NSF # 1144164

- added NSF # 1144164 on Mar 19, 2013 11:03 AM by
<Could not load the preview of Funding data >

R/V Atlantis

Shipboard Equipment

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

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

Air temperature
Barometric Pressure
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

Will you be using Ultra-short baseline (USBL) navigation for other than Alvin operations? no

Navigation Notes:


Winch Notes: OSU heat flow probe, multi-corer and gravity corer will be used

Wire use and application

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


Wire Notes:

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

Portable Vans

Chemical Storage Van
Isotope Van

Other Science Vans:

Other Science Vans:

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? yes

Radioactive Material

Radioiosotopes: no

Additional Information

Is night time work anticipated on this cruise? yes

Specialized 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.

ROV Jason

Site Survey

Will you provide detailed charts of the work area(s)?  yes
Current Chart(s):


If no, willl you need Jason 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

Will you be using Ultra-short baseline (USBL) navigation? yes

Will you be using Doppler/GPS navigation? yes

Sensors & Samplers

Large capacity slurp samplers (Multi-chamber)
Large capacity slurp samplers (Single Chamber)
Push corers
Scoop nets
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? 

Or has the pressure case been tested per Alvin Pressure Test requirements?  yes

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? 

Does the equipment require data or a power interface from the vehicle?  no

Does this equipment require hydraulic inputs from the vehicle?  no
Hydraulic schematic of the equipment requirements.

Does this equipment require manipulation?  yes

If yes, please describe how the equipment is to be manipulated.
As on previous cruises.

Will this equipment be deployed off the vehicle?  yes

If yes, please describe how the equipment is intended for deployment.
As on previous cruises

If yes, will the equipment be disconnected from the vehicle and left in situ?  yes

How long will the deployment be? 

Will the equipment be recovered by the same vehicle?  yes

If recovering equipment deployed with another vehicle, provide pressure rating: 
and test pressure: 

Does this equipment use any glass spheres for either buoyancy or as pressure housings?  no

Hazardous Material

Will hazardous material be utilized? no

Additional Information

Brief operations description or comments:

Dive area is in the Quinault Indian Nation Treaty zone, and I am presently discussing the cruise with them.  Dive area is in high density marine mammal zone, and has abundant fishing/crabbing activities which can conflict with science objectives.  Jason has worked in this area previously (OBSIP program, 2012).

Date Submitted: Mar 21, 2013 4:18 PM