NISKINE2

Ship

RV Neil Armstrong

Vehicles

Cruise Party

Matthew Alford: Chief Scientist
Organization Name US
+1 858 246 1646
malford@ucsd.edu

Leif Thomas: Principal Investigator
Stanford University
+1 650 721 1140
leift@stanford.edu

Caitln Whalen: Principal Investigator
Applied Physics Laboratory, University of Washington
+1 206 685 1505
cwhalen@apl.uw.edu

Departure: Reykjavik, Iceland on Aug 16, 2020

Arrival: Woods Hole on Sep 20, 2020

Supporting documentation:

»Iceland_ops_area.png

Operations Area:

Lat/Lon: 59° 30.0′ N / 26° 0.0′ W

Depth Range: 0 / 3000

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

Science objectives

Obtain oceanic measurements from the North Atlantic storm track.  The experiment aims at better understanding the generation, propagation and dissipation of internal waves in the near-inertial frequency spectrum and their interaction with meso- and submesoscale features in order to refine forecasting of upper-ocean shear.

Science Activities

We will be recovering three full-depth subsurface moorings comprised of syntactic foam floatation, current meters, temperature, salinity and conductivity sensors, and acoustic releases. These moorings are all in approximately 2900m water (locations listed in station information below).

We will also deploy a variety of lagrangian drifters, floats (EM-APEX), autonomous vehicles (Slocum and micorstructure gliders, Seagliders), and wave buoys. Finally, we will use shipboard sampling sytems (FastCTD and Lowered ADCP on CTD rosette) to sample velocity shear and turbulence in the upper ocean.

Pre-cruise planning meeting: Teleconference

Stations:

  Mooring 3 (M3)
  Distance: null
  Days: 1
  Latitude: 59° 1.813’ N
  Longitude: 21° 25.043’ W

  Mooring 2 (M2)
  Distance: null
  Days: 1
  Latitude: 58° 57.959’ N
  Longitude: 21° 11.799’ W

  Mooring 1 (M1)
  Distance: null
  Days: 1
  Latitude: 59° 6.087’ N
  Longitude: 21° 11.93’ W

Funding Agency: ONR/NAVY ##N00014-18-1-2423

- added ONR/NAVY ##N00014-18-1-2423 on Dec 13, 2019 6:33 PM by
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R/V Armstrong

Shipboard Equipment

ADCP 300 kHz
ADCP 150 kHz
A-Frame
Science Underway Seawater System
EM122 (12 kHz) Multibeam Echosounder
EK80 Sonar
Dynamic Positioning System
WAMOS
ADCP 38 kHz
Crane
EM710 MkII (40 to 100 kHz) Multibeam Echosounder


Shipboard Equipment Notes: We have also requested the TSE Spooler from the winch pool and prefer no divider on the drum if possible.
We are requesting to use the shipboard system to ping our releases once the moorings are deployed if possible. Otherwise, we have our own deckset which we can also use.
We are also requesting the use of the full LADCP equipment set offered by WHOI (batteries, downlooking 150, uplooking 300, a spare, clamps, etc.).

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?


Shipboard Communication Notes: Our group uses a task management tool called Hive that is somewhat crucial to our operations in the case of instrument failure. We are not sure how this new platform will perform on low bandwidth. If at all possible, increased bandwidth wouild be ideal. We can discuss this in more detail during the pre-cruise meeting.

CTD/Water Sampling

Wet Labs ECO-AFL fluorometer
Wet Labs C*Star transmissometer (660nm wavelength)
SBE43 oxygen sensor
911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
Biospherical underwater PAR (1000m depth limit) with reference Surface PAR
Wet Labs FLNTURTD Combination Flourometer and Turbidity Sensor

Critical CTD Sensors:  We do not need bottles on the CTD, but do need the CTD sensors and usual suite plus LADCP.

CTD-Related Equipment

Lowered Acoustic Doppler Current Profiler (LADCP)

MET Sensors

Barometric Pressure
Air temperature
Precipitation
Relative Humidity
Wind speed and direction
Short Wave Solar Radiation
Long Wave Solar Radiation


Storage Notes:

Navigation

GPS

Navigation Notes:

Winches

Trawl Winch with 9/16th trawl wire
UNOLS Winch Pool

Winch Notes: We have requested the TSE Spooler for mooring operations. We will also be bringing our own FastCTD winch system for survey ops.

Wire use and application

CTD Winch with .322" Electro-mechanical wire
Trawl Winch with 9/16th trawl wire
3/8" Hydro Wire


Wire Notes: We will bring dragging gear for use with trawl winch in case acoustic releases on moorings fail.
Will bring winch for fastCTD wire, appendix A compliant.
Will mount LADCP on CTD rosette.

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

Other Science Vans:

Over the Side Equipment

Will you be bringing any equipment (winches, blocks, etc.) that lowers instruments over the side? yes

Details: FastCTD winch

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

Describe deployment method and quantity:
We will have a small amount of isopropyl alcohol and aerosol cans. We will also be recovering instruments with spent lithium ion batteries. We are not currently planning to bring any additional lithium batteries on board between the previous cruise (BLT1) and NISKINE2.

Radioactive Material

Radioiosotopes: no

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other):  In case of FastCTD failure, we plan to profile with the shipboard CTD. This would be done as a 24-hr operation.

Other required equipment and special needs: 
Date Submitted: Dec 13, 2019 6:57 PM