SeaSoar CTD observations from R/V Oceanus cruises OC340 and OC343 in the Gulf of Maine and Georges Bank in 1999 as part of the U.S. GLOBEC program (GB project)

Website: https://www.bco-dmo.org/dataset/2431
Data Type: Cruise Results
Version: 1
Version Date: 2000-10-16

Project
» U.S. GLOBEC Georges Bank (GB)

Program
» U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)
ContributorsAffiliationRole
Barth, JackOregon State University (OSU)Co-Principal Investigator
Hebert, DaveUniversity of Rhode Island (URI-GSO)Co-Principal Investigator
Allison, DickyWoods Hole Oceanographic Institution (WHOI)BCO-DMO Data Manager

Abstract
SeaSoar CTD observations from R/V Oceanus cruises OC340 and OC343 in the Gulf of Maine and Georges Bank in 1999 as part of the U.S. GLOBEC program (GB project)


Coverage

Spatial Extent: N:42.59421 E:-66.28048 S:40.53822 W:-67.76664
Temporal Extent: 1999-03-30 - 1999-06-30

Dataset Description

The seasoar is a towed, undulating vehicle which records CTD and other data. The system records SeaBird CTD data at 24 hz, and it had other sensors on the A/D channels. The seasoar gets towed along different tracklines to map out various survey areas. Each time the seasoar is deployed and recovered is one "tow", and each of the cruises have a number of tows.

 

  PI:              Jack Barth (OSU), Dave Hebert (URI)
  dataset:         SeaSoar CTD data
  project/cruise:  R/V Oceanus Cruise 340 and 343 to Georges Bank
  ship:            Oceanus
 
  Cruise details given in:

  Hebert, D., J. A. Barth, D. Ullman, S. Fontana and W. Ostrom,
  1999.  Cruise Report: R/V Oceanus Cruise 340 to Georges Bank, 28 March
  to 12 April 1999.
  US GLOBEC NW Atlantic/Georges Bank Study, 37 pp.

  Methods are described in:
 
  SeaSoar CTD Observations During the Coastal Mixing and Optics Experiment:
  R/V Endeavor Cruises from 14-Aug to 1-Sep 1996 and 25-Apr to 15-May 1997.
  R. O'Malley, J.A. Barth, A. Erofeev, J. Fleischbein, P.M. Kosro and 
  S.D. Pierce.  College of Oceanic & Atmospheric Sciences, Oregon State
  University, Corvallis.  Reference 98-1, Data Report 168, October 1998.
 
  Hebert, D., J. A. Barth, D. Ullman and S. Fontana,
  1999.  Cruise Report: R/V Oceanus Cruise 343 to Georges Bank, 14 June
  to 1 July 1999.
  US GLOBEC NW Atlantic/Georges Bank Study, 40 pp.

  These are flat files, with data every 1-sec for each tow.  The tows are 
  numbered sequentialy (tow1, tow2, etc).

Notes:
1. There are two fields for different fluorometers: flvolt (aka FL-1) is from a WetLabs Wetstar fluorometer, while flvolt_2 (aka FL-2) is from a WetLabs FlashPAK fluorometer.

2. Original field name is shown in parenthesis in the "Description" column.

3. There were some problems in the data fields whenever the lat/lon were interpolated for lack of GPS observations. The OC343 data files were replaced on-line with the reprocessed files October 16, 2000.

 


Acquisition Description

The seasoar is a towed, undulating vehicle which records CTD and other data. The system records SeaBird CTD data at 24 hz, and it had other sensors on the A/D channels. The seasoar gets towed along different tracklines to map out various survey areas. Each time the seasoar is deployed and recovered is one 'tow', and each of the cruises have a number of tows.


Processing Description

Methods are described in:
 
  SeaSoar CTD Observations During the Coastal Mixing and Optics Experiment:
  R/V Endeavor Cruises from 14-Aug to 1-Sep 1996 and 25-Apr to 15-May 1997.
  R. O'Malley, J.A. Barth, A. Erofeev, J. Fleischbein, P.M. Kosro and 
  S.D. Pierce.  College of Oceanic & Atmospheric Sciences, Oregon State
  University, Corvallis.  Reference 98-1, Data Report 168, October 1998.
 
  Hebert, D., J. A. Barth, D. Ullman and S. Fontana,
  1999.  Cruise Report: R/V Oceanus Cruise 343 to Georges Bank, 14 June
  to 1 July 1999.
  US GLOBEC NW Atlantic/Georges Bank Study, 40 pp.

  These are flat files, with data every 1-sec for each tow.  The tows are 
  numbered sequentialy (tow1, tow2, etc).

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Parameters

ParameterDescriptionUnits
yrday_utcJulian Day plus fractional day for reference (jday+):Jan 1 noon = 1.5Jan 1 midnight = 2.0 decimal days (UTC)
latLatitude (- for S) decimal degrees
lonLongitude (- for W) decimal degrees
pressPressure (P) decibars
tempTemperature (T) degrees C
sal_ctdSalinity (S) PSS
sigma_t_ctdSigma-T (sig-t) kg / cubic-meter
potemp_ctdPotential Temperature Degrees C
sigma_0_ctdSigma-Theta kg / cubic-meter
flvoltFluorometer (Fl or Fl-1) volts (0-5)
flvolt_2Fluorometer (alternate measurement) (Fl-2) OC343 only. volts (0-5)
light_tran_vTransmissometer (trans) volts (0-5)
cruiseidCruise Identifier. unitless
yearYear. unitless
towtow number unitless


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Instruments

Dataset-specific Instrument Name
SeabirdCTD
Generic Instrument Name
CTD Sea-Bird
Dataset-specific Description
The system records SeaBird CTD data at 24 hz, and it had other sensors on the A/D channels. The seasoar gets towed along different tracklines to map out various survey areas.
Generic Instrument Description
Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.

Dataset-specific Instrument Name
SeaSoar
Generic Instrument Name
SeaSoar
Dataset-specific Description
The seasoar is a towed, undulating vehicle which records CTD and other data.
Generic Instrument Description
Towed, undulating vehicle usually equipped with a VPR, TAPS, PAR, CTD


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Deployments

OC340

Website
Platform
R/V Oceanus
Report
Start Date
1999-03-28
End Date
1999-04-12
Description
process

Acquisition Description
The seasoar is a towed, undulating vehicle which records CTD and other data. The system records SeaBird CTD data at 24 hz, and it had other sensors on the A/D channels. The seasoar gets towed along different tracklines to map out various survey areas. Each time the seasoar is deployed and recovered is one 'tow', and each of the cruises have a number of tows.

Processing Description
Methods are described in: SeaSoar CTD Observations During the Coastal Mixing and Optics Experiment: R/V Endeavor Cruises from 14-Aug to 1-Sep 1996 and 25-Apr to 15-May 1997. R. O'Malley, J.A. Barth, A. Erofeev, J. Fleischbein, P.M. Kosro and S.D. Pierce. College of Oceanic & Atmospheric Sciences, Oregon State University, Corvallis. Reference 98-1, Data Report 168, October 1998. Hebert, D., J. A. Barth, D. Ullman and S. Fontana, 1999. Cruise Report: R/V Oceanus Cruise 343 to Georges Bank, 14 June to 1 July 1999. US GLOBEC NW Atlantic/Georges Bank Study, 40 pp. These are flat files, with data every 1-sec for each tow. The tows are numbered sequentialy (tow1, tow2, etc).

OC343

Website
Platform
R/V Oceanus
Report
Start Date
1999-06-15
End Date
1999-06-30
Description
process

Acquisition Description
The seasoar is a towed, undulating vehicle which records CTD and other data. The system records SeaBird CTD data at 24 hz, and it had other sensors on the A/D channels. The seasoar gets towed along different tracklines to map out various survey areas. Each time the seasoar is deployed and recovered is one 'tow', and each of the cruises have a number of tows.

Processing Description
Methods are described in: SeaSoar CTD Observations During the Coastal Mixing and Optics Experiment: R/V Endeavor Cruises from 14-Aug to 1-Sep 1996 and 25-Apr to 15-May 1997. R. O'Malley, J.A. Barth, A. Erofeev, J. Fleischbein, P.M. Kosro and S.D. Pierce. College of Oceanic & Atmospheric Sciences, Oregon State University, Corvallis. Reference 98-1, Data Report 168, October 1998. Hebert, D., J. A. Barth, D. Ullman and S. Fontana, 1999. Cruise Report: R/V Oceanus Cruise 343 to Georges Bank, 14 June to 1 July 1999. US GLOBEC NW Atlantic/Georges Bank Study, 40 pp. These are flat files, with data every 1-sec for each tow. The tows are numbered sequentialy (tow1, tow2, etc).


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Project Information

U.S. GLOBEC Georges Bank (GB)


Coverage: Georges Bank, Gulf of Maine, Northwest Atlantic Ocean


The U.S. GLOBEC Georges Bank Program is a large multi- disciplinary multi-year oceanographic effort. The proximate goal is to understand the population dynamics of key species on the Bank - Cod, Haddock, and two species of zooplankton (Calanus finmarchicus and Pseudocalanus) - in terms of their coupling to the physical environment and in terms of their predators and prey. The ultimate goal is to be able to predict changes in the distribution and abundance of these species as a result of changes in their physical and biotic environment as well as to anticipate how their populations might respond to climate change.

The effort is substantial, requiring broad-scale surveys of the entire Bank, and process studies which focus both on the links between the target species and their physical environment, and the determination of fundamental aspects of these species' life history (birth rates, growth rates, death rates, etc).

Equally important are the modelling efforts that are ongoing which seek to provide realistic predictions of the flow field and which utilize the life history information to produce an integrated view of the dynamics of the populations.

The U.S. GLOBEC Georges Bank Executive Committee (EXCO) provides program leadership and effective communication with the funding agencies.



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Program Information

U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)


Coverage: Global


U.S. GLOBEC (GLOBal ocean ECosystems dynamics) is a research program organized by oceanographers and fisheries scientists to address the question of how global climate change may affect the abundance and production of animals in the sea.

The U.S. GLOBEC Program currently had major research efforts underway in the Georges Bank / Northwest Atlantic Region, and the Northeast Pacific (with components in the California Current and in the Coastal Gulf of Alaska). U.S. GLOBEC was a major contributor to International GLOBEC efforts in the Southern Ocean and Western Antarctic Peninsula (WAP).



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Funding

Funding SourceAward
National Oceanic and Atmospheric Administration (NOAA)
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)

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