Georges Bank bathymetry from ADCP data from twelve R/V Endeavor cruises EN262 in the Gulf of Maine and Georges Bank area during 1995 (GB project)

Website: https://www.bco-dmo.org/dataset/2294
Data Type: Cruise Results
Version: 1
Version Date: 2006-03-13

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

Program
» U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)
ContributorsAffiliationRole
Flagg, CharlesStony Brook University - MSRC (SUNY-SB MSRC)Scientist
Groman, Robert C.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Abstract
Georges Bank bathymetry from ADCP data from twelve R/V Endeavor cruises EN262 in the Gulf of Maine and Georges Bank area during 1995


Coverage

Spatial Extent: N:42.3313 E:-65.6088 S:40.1102 W:-71.4117
Temporal Extent: 1995 - 1995

Dataset Description

Georges Bank bathymetry from ADCP data

DMO note:
Year of data can be obtained from cruise report(s).

Contributor:
Charles Flagg,
Endeavour Hall, Rm 203
Marine Science Research Center
SUNY Stony Brook
Stony Brook, NY 11794
cflagg@mc.cc.sunysb.edu

Julio Candela prepared the data for on-line use.

last update: March 13, 2006.


Methods & Sampling

Georges Bank bathymetry from the ADCP Endeavor data from Charles Flagg, Brookhaven National Laboratories


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Data Files

File
bathy_ADCP.csv
(Comma Separated Values (.csv), 1.21 MB)
MD5:e791b3231ac00fe3679103c8df06bfa8
Primary data file for dataset ID 2294

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Parameters

ParameterDescriptionUnits
cruiseidcruise identification i.e. EN235
shipship name
yrday_gmtyearday, GMT, Julian Calendar decimal yearday
latlatitude, negative=south decimal degrees
lonlongitude, negative=west decimal degrees
depth_wwater depth meters


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Instruments

Dataset-specific Instrument Name
Acoustic Doppler Current Profiler
Generic Instrument Name
Acoustic Doppler Current Profiler
Dataset-specific Description
Acoustic Doppler Current Profiler, encompasses an array of band widths and frequencies
Generic Instrument Description
The ADCP measures water currents with sound, using a principle of sound waves called the Doppler effect. A sound wave has a higher frequency, or pitch, when it moves to you than when it moves away. You hear the Doppler effect in action when a car speeds past with a characteristic building of sound that fades when the car passes. The ADCP works by transmitting "pings" of sound at a constant frequency into the water. (The pings are so highly pitched that humans and even dolphins can't hear them.) As the sound waves travel, they ricochet off particles suspended in the moving water, and reflect back to the instrument. Due to the Doppler effect, sound waves bounced back from a particle moving away from the profiler have a slightly lowered frequency when they return. Particles moving toward the instrument send back higher frequency waves. The difference in frequency between the waves the profiler sends out and the waves it receives is called the Doppler shift. The instrument uses this shift to calculate how fast the particle and the water around it are moving. Sound waves that hit particles far from the profiler take longer to come back than waves that strike close by. By measuring the time it takes for the waves to bounce back and the Doppler shift, the profiler can measure current speed at many different depths with each series of pings. (More from WHOI instruments listing).


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Deployments

EN262

Website
Platform
R/V Endeavor
Report
Start Date
1995-02-23
End Date
1995-03-10
Description
process zoology

Methods & Sampling
Georges Bank bathymetry from the ADCP

EN263

Website
Platform
R/V Endeavor
Report
Start Date
1995-03-13
End Date
1995-03-24
Description
broad-scale

Methods & Sampling
Georges Bank bathymetry from the ADCP

EN260

Website
Platform
R/V Endeavor
Start Date
1995-01-29
End Date
1995-02-06
Description
long term mooring deployment

Methods & Sampling
Georges Bank bathymetry from the ADCP

EN259

Website
Platform
R/V Endeavor
Report
Start Date
1995-01-10
End Date
1995-01-22
Description
process zoology

Methods & Sampling
Georges Bank bathymetry from the ADCP

EN264

Website
Platform
R/V Endeavor
Report
Start Date
1995-03-26
End Date
1995-04-08
Description
process zoology

Methods & Sampling
Georges Bank bathymetry from the ADCP Endeavor data from Charles Flagg, Brookhaven National Laboratories

EN266

Website
Platform
R/V Endeavor
Report
Start Date
1995-04-26
End Date
1995-05-08
Description
process zoology

Methods & Sampling
Georges Bank bathymetry from the ADCP Endeavor data from Charles Flagg, Brookhaven National Laboratories

EN267I

Website
Platform
R/V Endeavor
Report
Start Date
1995-05-22
End Date
1995-06-05
Description
process zoology

Methods & Sampling
Georges Bank bathymetry from the ADCP Endeavor data from Charles Flagg, Brookhaven National Laboratories

EN267II

Website
Platform
R/V Endeavor
Report
Start Date
1995-06-08
End Date
1995-06-19
Description
process

Methods & Sampling
Georges Bank bathymetry from the ADCP Endeavor data from Charles Flagg, Brookhaven National Laboratories

EN268

Website
Platform
R/V Endeavor
Start Date
1995-06-26
End Date
1995-07-06
Description
process

Methods & Sampling
Georges Bank bathymetry from the ADCP Endeavor data from Charles Flagg, Brookhaven National Laboratories

EN269

Website
Platform
R/V Endeavor
Report
Start Date
1995-07-10
End Date
1995-07-13
Description
process mooring

Methods & Sampling
Georges Bank bathymetry from the ADCP Endeavor data from Charles Flagg, Brookhaven National Laboratories

EN261

Website
Platform
R/V Endeavor
Start Date
1995-02-10
End Date
1995-02-20
Description
broad-scale

Methods & Sampling
Georges Bank bathymetry from the ADCP Endeavor data from Charles Flagg, Brookhaven National Laboratories

EN265

Website
Platform
R/V Endeavor
Start Date
1995-04-11
End Date
1995-04-22
Description
broad-scale

Methods & Sampling
Georges Bank bathymetry from the ADCP


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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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