EPR Geodesy

Ship

R/V Atlantis

Vehicles

ROV Jason

Cruise Party

Scott Nooner: Chief Scientist, Principal Investigator
Lamont-Doherty Earth Observatory 61 Route 9W Palisades, NY USA 10964
+1 845 365 8944
snooner@ldeo.columbia.edu

Departure: Manzanillo on Apr 11, 2011

Arrival: San Diego on Apr 28, 2011

Mobilization Date: Apr 8, 2011

Demobilization Date: Apr 30, 2011

Supporting documentation:

»BPRsrev2011.xls
»Nooner_benchmark_info.doc

Operations Area: NP13

Lat/Lon: 9° 50.0′ N / 104° 17.0′ W

Depth Range: 2500 / 2900

Will the vessel be operating within 200 NM of a foreign country? no

Science objectives

1. Carry out a seafloor geodetic survey by making repeated measurements on 10 seafloor benchmarks using a pressure gauge package that is connected to the ROV with an umbilical.

Science Activities

Pre-cruise planning meeting: Teleconference

Stations:

Funding Agency: NSF #0647840

- added NSF #0647840 on Jan 31, 2011 5:21 PM by
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R/V Atlantis

Shipboard Equipment

Navigation - Heading

CTD/Water Sampling

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

Critical CTD Sensors: 

MET Sensors

Barometric Pressure
Air temperature
Relative Humidity
Wind speed and direction

Sample Storage

Scientific Walk-in Freezer

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? yes

Winches

CTD Winch with .322" Electro-mechanical wire

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? 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

Radioactive Material

Radioiosotopes: no

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other): 

Other required equipment and special needs: 

ROV Jason

Site Survey

Will you provide detailed charts of the work area(s)?  no
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

Search Sonar
What type of samples do you expect to collect?

Elevators

Will you be using elevators to transport samples to the surface?  yes

If yes, how many would you anticipate?  20

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.
1. Mobile Pressure Recorder--a pressure gauge package requiring 12-24V power and RS232 communications. 

2. Bottom Pressure Recorders--we will be recovering several bottom pressure recorder packages. They have glass balls for flotations. We will need a knife on the ROV to cut the burn wire (1/8" stainless braided wire rope).

Does this equipment use an external pressure housing?  yes

If yes, what is the pressure rating?  10000
and test pressure?  6000

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?  yes

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.
The instrument will be picked up from the science basket and placed gently onto a benchmark and released. After a measurement period of 15-20 minutes, the instrument will be picked up and stowed on the science basket until the next site.

Will this equipment be deployed off the vehicle?  no

If yes, please describe how the equipment is intended for deployment.

The instrument will be picked up from the science basket and placed gently onto a benchmark and released. After a measurement period of 15-20 minutes, the instrument will be picked up and stowed on the science basket until the next site.

If yes, will the equipment be disconnected from the vehicle and left in situ?  no

How long will the deployment be? 

Will the equipment be recovered by the same vehicle?  no

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:
When recovering BPRs, we will need a knife or hydraulic cutter on the manipulator to cut the burnwire, since they didn't release properly in 2009. We will also want to attach strobe lights (provided by us) to each BPR to aid in recovery. 

We plan to map the axial summit trough during the transit from BPR to BPR using the Reson Sonar, so we will need that as well (it wasn't listed anywhere else on this questionnaire).

Date Submitted: Feb 2, 2011 3:02 PM