Science Instrumentation & Sensors

HEALY is outfitted with six primary laboratories, refrigerated science spaces, two climate control spaces, and a number of assembly and staging areas. The spaces listed below are diagramed in the following links depicting the main deck science spaces and the 01 deck spaces.

The following sensitive power type is provided to the science labs: 120 VAC, 60 Hz, Type I 230 VAC, 60 Hz, Type I 120 VAC, 60 Hz, Type I with surge & spike suppression.

Acoustic Doppler Current Profiler (ADCP)

Healy was delivered with Broadband ADCPs, a 300kHz and 150kHz. The 300kHz instrument never really worked, and in 2002, it was replaced with 75kHz phased array “Ocean Surveyor” ADCP. During the winter inport period of 2010, the 150kHz Broadband ADCP was replaced with a 150kHz phased array “Ocean Surveyor” (loaned by Univ Alaska, Fairbanks). These are referred to as OS75 and OS150, respectively.

Efforts to improve data quality are discussed in the reports (below).  These reports also contain the most up-to-date information about computer and serial port configuration, messages acquired, and a detailed evaluation of the performance of the two instruments.

In summary, both instruments suffer from reduced range and bias in the broadband mode.  They still function in narrowband mode. Serial heading is acquired from two Sperry gyro-compasses, the Ashtech ADU5, and the POSMV.   The latter two and a PCode GPS all provide positions.

ADCP Data acquisition and processing are handled by a linux computer running UHDAS software (University of Hawaii). UHDAS is a system designed to support scientists at sea, with the goal of getting the data product (ocean velocities) as close to science-ready as is practical in an autonomous installation.  On many ships, there is only a little touch-up necessary (editing and calibration) after a cruise.  For those steps or to completely reprocess the data, the core processing code "CODAS" is available to download and install.

  1. UHDAS+CODAS documentation
  2. A short introduction to UHDAS
  3. RDI Ocean Surveyor Specifications
Reports
  1. July 2013- Healy 2013 UHDAS installation (Dr. Julia Hummon)
  2. May 2011 - Healy 2011 ADCP evaluation (Dr. Julia Hummon)
  3. May 2011 - Healy HLY11TA data report (Dr. Julia Hummon)
  4. May 2011 - Healy 2011 UHDAS installation (Dr. Julia Hummon)
  5. Jul 2010 - Healy 2010 ADCP evaluation (Dr. Julia Hummon)
  6. Jul 2010 - Healy HLY10TC data report (Dr. Julia Hummon)
  7. Jul 2010 - Healy 2010 UHDAS installation (Dr. Julia Hummon)
  8. Jul 2010 - OS150 installation (2010 Dry Dock)
  9. Nov 2003 - Preliminary report on HLY-03-03 ADCP data collection (Dr.Andreas Münchow)
  10. Jul 2010 - OS75 installation Photos (2003 Dry Dock)
  11. Jun 2002 - SBI HLY0201 ADCP data collection and AutoADCP (Dr. Charles Flagg)
  12. Jun 2002 - SBI ADCP data quality HLY0201 (Dr. Charles Flagg)
  13. Jun 2002 - AutoADCP Introduction (Dr. Charles Flagg)
  14. Jul 2002 - USCGC Healy Commissioning Report (Scott Idle)
  15. Mar 2002 - RD Instruments Inc. Ocean Surveyor 75 kHz (Ron Hippe)
  16. Jul 2000 - Original Science Trials (BB150, BB300) (Dr. Julia Hummon)

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Knudsen 320B/R

The Knudsen 320B/R has two transceivers and is capable of operating as a subbottom profiler (CW at 3.5 KHz or frequency modulated chirp from 2kHz to 6 kHz) and a conventional single beam echo sounder at 12 KHz. The transceiver and computer are installed in IC/Gryo with the display, keyboard and mouse remoted to the Science Watch Standers Workstation in the Computer Lab. It is possible to run both modes simultaneously. Heave correction from the POS/MV is applied. Position data comes directly from a GPS receiver.

During normal operation on the Healy, the 12 KHz mode is not used as it interferes with operation of the swath mapping (multibeam) system. The subbottom transducer array consists of sixteen Ocean Data Equipment Corp. TR-109 elements configured in a four by four array wired in a series-parallel arrangement and mounted in a transducer well inside the ship.

Like the multibeam array, the transducers are protected from the sea ice by a thick polyurethane ("SeaBeam Orange") windows. The 12 kHz transducer is a Ocean Data Equipment Corp. TC-1234. By prior arrangement, this transducer may also be used for interrogating acoustic transponders and releases with an appropriate user-supplied deck unit.

Knudsen data is not corrected for sound speed, it is collected using a uniform sound speed of 1,500 meters per second. Knudsen data is heave compensated with input from the POS/MV. Data files are routinely logged in KEA, KEB and SEG-Y formats. Click here for a review of Sub-Bottom profiler processing.

  1. A review of Sub-Bottom profiler processing
  2. Specs for Knudsen 320 B/R
  3. 2005 HLY0503 operational notes
  4. Digital Signal Processing on the KEL 320 B/R
  5. Knudsen 320 B/R Science System Configurations

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Seabeam Orange Acoustic Test Results

HEALY has a Sippican expendable oceanographic probe MK21 Windows based data acquisition system on board. Expendable probes can be launched from inside the transom of HEALY using a LM-4A thru-hull launcher (located in the bosns stores compartment 2-154-2-A ) or from anywhere on the fantail deck using the Hand-Held Launcher (LM-3A), which has 150’ of cable.

Thru-Hull Launcher (LM-4A)

The LM-4A is the standard launcher for all military vessels and employs the same basic assembly as the LM-2A. However, the LM-4A is installed below deck for improved safety and increased convenience under heavy weather conditions.

Hand-Held Launcher (LM-#A)

The LM-3A provides portability, allows more flexibility in selecting launcher position, and educes interference with other equipment.

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CTD

The Sea Bird 911 CTD deck units have GPS input from POSMV GPS. Data is transferred directly to the network for later use. The system is run from the Science Conning station.

  1. Healy 2006 CTD Report
  2. Healy 2004 CTD Report
  3. Healy 2003 CTD Report
  4. CTD Specs
  5. CTD Science System Configurations

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Weather Data

Air Temperature

Air temperature is provided via a R. M. Young platinum air temperature sensor enshrouded with an gill aspirated radiation shield. This sensor is located on the 06 deck flying bridge. This data is saved to the science net via serial interface.

Wind Speed and Direction

Wind Data is provided via R.M. Young wind vanes located on the port and starboard sides of the mast (furthest outboard position). This data is saved to the science net.

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Terrascan Data Receiving System

Real-time satellite imagery of weather and sea ice conditions is provided by an onboard SeaSpace Terascan system. The system is configured to receive real-time data from the Defense Meteorological Satellite Program (DMSP), NOAA and the Chinese Feng Yun(FY-1) polar-orbiting meteorological satellites. The system can process digital OLS, HRPT and CHRPT data for visible and infrared imagery and DMSP SSM/I for passive microwave. The resolution of the NOAA and FY-1 visible/IR sensors are 1.1km and the DMSP is 0.5km. A list of products that can be generated from this data include:

  1. Brightness Temperature
  2. Radiance
  3. Skin Temperature
  4. Surface Temperature
  5. Cloud Products
  6. Snow and Ice Products
  7. Land Processes (fire, vegetation, soil)
  8. Ocean Products (STT)
  9. Atmosphere profiles and winds
  10. Precipitation Products
  11. Water Vapor, Dew Point, Fog
The SeaSpace Terascan System consists of:
  1. 1.5m full motion LEO L/S band Antenna
  2. satellite receiver
  3. Crypto, KG-44/TSEC (Post Delivery)
  4. Linux data acquisition and processing workstation
  5. High resolution color printer

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Gravimeters

Healy currently sails with two Bell BGM3 Gravimeters (one belongs to the Sikuliaq).

  1. May 2011 - 2011 Service visit report (Randy Herr and James Kinsey)
  2. March 1988 - Seattle Pier Gravity Stations

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