CTD data collected during 12 long-term mooring cruises to Georges Bank as part of the U.S. GLOBEC project on R/V Columbus Iselin, R/V Endeavor, R/V Seward Johnson, R/V Albatross IV, and R/V Oceanus from 1994-1999 (GB project)

Website: https://www.bco-dmo.org/dataset/2403
Version: 2005-07-14

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

Program
» U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)
ContributorsAffiliationRole
Irish, JimWoods Hole Oceanographic Institution (WHOI)Principal Investigator
Allison, DickyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

GLOBEC Georges Bank Long-Term Moored Array Component

Standard CTD Sections

positions of CTD stations

 


Long Term Section Stations
	LT01 41 31.0 N x 67 36.0 W
	LT02 41 24.5 N x 67 32.5 W
	LT03 41 17.0 N x 67 28.5 W
	LT04 41 12.5 N x 67 26.5 W
	LT05 41 09.5 N x 67 24.5 W
	LT06 41 06.0 N x 67 22.5 W
	LT07 41 02.0 N x 67 20.8 W
	LT08 40 58.0 N x 67 19.0 W
	LT09 40 54.5 N x 67 17.0 W
	LT10 40 50.5 N x 67 15.0 W
	LT11 40 47.0 N x 67 13.0 W
	LT12 40 41.5 N x 67 10.5 W
	LT13 40 35.7 N x 67 08.0 W
	LT14 40 30.0 N x 67 05.0 W

NE Peak Section Stations
	NE01 41 28.52 N x 67 12.17 W
	NE02 41 31.02 N x 67 05.77 W
	NE03 41 33.32 N x 66 57.77 W
	NE04 41 35.52 N x 66 50.87 W
	NE05 41 38.12 N x 66 43.07 W
	NE06 41 40.32 N x 66 35.97 W
	NE07 41 42.72 N x 66 28.77 W
	NE08 41 45.12 N x 66 21.67 W
	NE09 41 47.42 N x 66 14.37 W
	NE10 41 49.72 N x 66 06.67 W
	NE11 41 52.02 N x 65 58.87 W
	NE12 41 54.62 N x 65 51.77 W
	NE13 41 56.82 N x 65 44.57 W
	NE14 41 59.20 N x 65 37.50 W

 

Data submitted by:
James Irish
Woods Hole Oceanographic Institution
Woods Hole, MA 02543

phone:  508 289 2732
fax:    508 457 2195
e-mail: jirish@whoi.edu 
   
Updated July 14, 2005, gfh

Acquisition Description

CTD for long term mooring cruises


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Parameters

ParameterDescriptionUnits
cruiseidcruise identification, i.e. en246 = Endeavor cruise 246
year_gmtyear, GMT
instrumentCTD instrument model/brand
stationpreassigned station identifer
castconsecutive CTD cast number within cruise
lat_beginlatitude at start of cast, negative = South decimal degrees
lon_beginlongitude at start of cast, negative = West decimal degrees
lat_endlatitude at end of cast, negative = South decimal degrees
lon_endlongitude at end of cast, negative = West decimal degrees
month_gmtmonth of year, GMT time, (1-12)
day_gmtday of month, GMT time, (01-31)
time_start_gmttime at start of cast, GMT HHmm
time_end_gmttime at end of cast, GMT HHmm
depth_wdepth of water meters
pressdepth of sample reported as pressure decibars
temptemperature degrees C
salsalinity. PSS
sigma_0sigma-theta, potential density kg/m3
condconductivity
O2Coxygen sensor current volts
O2Toxygen sensor temperature degrees C
trans_vlight transmission volts
par photosynthetically available radiation volts
flvolt fluorometer voltage measurements volts
transLight transmission in percent. percent


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Instruments

Dataset-specific Instrument Name
CTD Falmouth Scientific Instruments
Generic Instrument Name
CTD Falmouth Scientific Instruments
Dataset-specific Description
CTD measurements taken by the Falmouth Scientific Instruments sensor
Generic Instrument Description
CTD measurements taken by the Falmouth Scientific Instruments sensor.

Dataset-specific Instrument Name
CTD Seabird 25
Generic Instrument Name
CTD Sea-Bird 25
Dataset-specific Description
CTD measurements taken by a SBE25 (Seabird) CTD instrument package.
Generic Instrument Description
The Sea-Bird SBE 25 SEALOGGER CTD is battery powered and is typically used to record data in memory, eliminating the need for a large vessel, electrical sea cable, and on-board computer. All SBE 25s can also operate in real-time, transmitting data via an opto-isolated RS-232 serial port. Temperature and conductivity are measured by the SBE 3F Temperature sensor and SBE 4 Conductivity sensor (same as those used on the premium SBE 9plus CTD). The SBE 25 also includes the SBE 5P (plastic) or 5T (titanium) Submersible Pump and TC Duct. The pump-controlled, TC-ducted flow configuration significantly reduces salinity spiking caused by ship heave, and in calm waters allows slower descent rates for improved resolution of water column features. Pressure is measured by the modular SBE 29 Temperature Compensated Strain-Gauge Pressure sensor (available in eight depth ranges to suit the operating depth requirement). The SBE 25's modular design makes it easy to configure in the field for a wide range of auxiliary sensors, including optional dissolved oxygen (SBE 43), pH (SBE 18 or SBE 27), fluorescence, transmissivity, PAR, and optical backscatter sensors. More information from Sea-Bird Electronics: http:www.seabird.com.

Dataset-specific Instrument Name
CTD Seabird 911
Generic Instrument Name
CTD Sea-Bird 911
Dataset-specific Description
CTD measurements taken by a SBE911 (SeaBird) CTD instrument package
Generic Instrument Description
The Sea-Bird SBE 911 is a type of CTD instrument package. The SBE 911 includes the SBE 9 Underwater Unit and the SBE 11 Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). More information from Sea-Bird Electronics.

Dataset-specific Instrument Name
MkIIICTD
Generic Instrument Name
CTD Neil Brown Mark III
Dataset-specific Description
formerly Neil Brown Mark III CTD, currently manufactured by General Oceanics
Generic Instrument Description
The Neil Brown Instrument Systems Mark III Conductivity, Temperature, Depth (CTD) instrument is an integral unit containing pressure, temperature and conductivity sensors with an optional dissolved oxygen sensor in a pressure-hardened casing. Developed in the 1970s, the Neil Brown CTD unit was able to digitize conductivity, temperature and pressure measurements at sufficient speeds to permit oceanographers to study 10 cm features at winch lowering speeds of 30 meters per minute. The most widely used variant in the 1980s and 1990s was the MK3B. The MK3C fitted with an improved pressure sensor to reduce hysteresis was developed to meet the requirements of the WOCE project. The instrument is no longer in production, but is supported (repair and calibration) by General Oceanics.


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Deployments

CI9405

Website
Platform
R/V Columbus Iselin
Report
Start Date
1994-05-07
End Date
1994-05-10
Description
long term mooring

Acquisition Description
CTD for long term mooring cruises

EN246

Website
Platform
R/V Endeavor
Report
Start Date
1994-06-28
End Date
1994-07-01
Description
long term mooring

Acquisition Description
CTD for long term mooring cruises

EN256

Website
Platform
R/V Endeavor
Report
Start Date
1994-10-26
End Date
1994-10-31
Description
long term mooring deployment

Acquisition Description
CTD for long term mooring cruises

SJ9504

Website
Platform
R/V Seward Johnson
Report
Start Date
1995-03-27
End Date
1995-04-04
Description
long term mooring turn-around

Acquisition Description
CTD for long term mooring cruises

EN274

Website
Platform
R/V Endeavor
Report
Start Date
1995-09-29
End Date
1995-10-05
Description
long term mooring recovery

Acquisition Description
CTD for long term mooring cruises

AL9513

Website
Platform
R/V Albatross IV
Report
Start Date
1995-10-30
End Date
1995-11-08
Description
long term mooring deployment

Acquisition Description
CTD for long term mooring cruises

OC276

Website
Platform
R/V Oceanus
Start Date
1996-03-30
End Date
1996-04-13
Description
long term mooring

Acquisition Description
CTD for long term mooring cruises

EN288

Website
Platform
R/V Endeavor
Start Date
1996-09-06
End Date
1996-09-13
Description
long term mooring

Acquisition Description
CTD for long term mooring cruises

OC291

Website
Platform
R/V Oceanus
Report
Start Date
1996-10-24
End Date
1996-10-31
Description
mooring cruise

Acquisition Description
CTD for long term mooring cruises

OC331

Website
Platform
R/V Oceanus
Report
Start Date
1998-10-04
End Date
1998-10-13
Description
long term mooring turn-around

Acquisition Description
CTD for long term mooring cruises

OC344

Website
Platform
R/V Oceanus
Report
Start Date
1999-07-06
End Date
1999-07-11
Description
long term mooring

Acquisition Description
CTD for long term mooring cruises

OC346

Website
Platform
R/V Oceanus
Report
Start Date
1999-08-11
End Date
1999-08-20
Description
long term mooring

Acquisition Description
CTD for long term mooring cruises


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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 Science Foundation (NSF)
National Oceanic and Atmospheric Administration (NOAA)

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