http://lod.bco-dmo.org/id/dataset/3397
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2010-12-14
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Determining the effect of Eastern Maine bottom currents on lobster gear groundlines from F/V Time-n-Tide NEC-LL2006-1 in the Gulf of Maine, off Jonesport, Maine from 2007-2007 (NEC_ProjDev project)
2011-01-20
publication
2011-01-20
revision
BCO-DMO Linked Data URI
2011-01-20
creation
http://lod.bco-dmo.org/id/dataset/3397
Ms Laura Ludwig
Gulf of Maine Lobster Foundation
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Ludwig, L. (2011) Determining the effect of Eastern Maine bottom currents on lobster gear groundlines from F/V Time-n-Tide NEC-LL2006-1 in the Gulf of Maine, off Jonesport, Maine from 2007-2007 (NEC_ProjDev project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2011-01-20 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/3397 [access date]
Determining the effect of Eastern Maine bottom currents on lobster gear groundlines Dataset Description: <p>&nbsp;</p>
<p><strong>"Determining the Effect of Eastern Maine Bottom Currents on Groundlines"</strong></p>
<p>This project sought to examine the effect of bottom currents on lobster gear in nearshore eastern Maine waters, to establish whether bottom currents there are strong enough to significantly reduce the profile of floating rope used as groundline between traps, thus reducing the risk of whale entanglements in lobster gear.<br />
<br />
Assessment of the current meter data indicates that the current off Jonesport, Maine, where all the equipment was deployed, measured at the bottom of the ocean on level with the traps (1-2m off bottom), is often over 30 cm/sec and has little to no 'slack' period between tides. Analysis of the sensor data showed the floating groundlines at or below 2m (one fathom) of arc height over a 20 fathom length, and overall the measurements suggest that the flow of current is significantly stronger near the ocean bottom than anticipated, which would tend to depress the floating line more than would be estimated assuming much lower flows.</p>
<p>See <a href="http://nec.whoi.edu/pdf/Ludwig2006_groundlines_final.pdf" target="blank">final report</a></p>
<p>Associated dataset: <a href="https://www.bco-dmo.org/dataset/3414" target="_blank">Groundline rope height (m) above seafloor between lobster traps </a></p> Methods and Sampling: <p>Datasets from three measuring devices were collected during five months of field-work. Depth and groundline height data was extrapolated from Star-Oddi pressure sensors deployed on a 20-trap trawl each month; current velocity and directional data was recorded by a Sensor Data 6000 current meter deployed near the lobster trawl; and three months' worth of data from acoustic Doppler current profilers (ADCP), rigged in a customized 3' lobster trap directly into the trawl, gave more detailed information about the velocity and direction of current acting on the groundline.</p>
Funding provided by NorthEast Consortium (NEC) Award Number: 07-090
completed
Ms Laura Ludwig
Gulf of Maine Lobster Foundation
207-985-8088
PO Box 523
Kennebunk
ME
04043
laura@gomlf.org
pointOfContact
asNeeded
Dataset Version: 1
Unknown
curr_dir_abs
curr_speed_abs
date_local
day_local
month_local
temp
time_local
year
yrday_local
lat
lon
Acoustic Doppler Current Profiler
Pressure Sensor
Sensor Data 6000 Current Meter
theme
None, User defined
absolute current direction
Absolute current speed
date_local
day_local
month_local
water temperature at measurement depth
time_local
year
day of year and decimal time (local time zone)
latitude
longitude
featureType
BCO-DMO Standard Parameters
Acoustic Doppler Current Profiler
Pressure Sensor
Sensor Data 6000 Current Meter
instrument
BCO-DMO Standard Instruments
NEC-LL2006-1
service
Deployment Activity
Gulf of Maine, off Jonesport, Maine
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
NorthEast Consortium
http://northeastconsortium.org/
NorthEast Consortium
The Northeast Consortium encourages and funds
cooperative research and monitoring projects in the Gulf of Maine and Georges Bank that have effective,
equal partnerships among fishermen, scientists, educators, and marine resource managers.
At the 2008 Maine Fisheremen's Forum, the Northeast Consortium organized a session on data collection and availability. Participants included several key organizations in the Gulf of Maine area, sharing what data are out there and how you can find them.
The Northeast Consortium has joined the Gulf of Maine Ocean Data Partnership. The purpose of the GoMODP is to promote and coordinate the sharing, linking, electronic dissemination, and use of data on the Gulf of Maine region.
The Northeast Consortium was created in 1999 to encourage and fund effective, equal partnerships among commercial fishermen, scientists, and other stakeholders to engage in cooperative research and monitoring projects in the Gulf of Maine and Georges Bank. The Northeast Consortium consists of four research institutions (University of New Hampshire, University of Maine, Massachusetts Institute of Technology, and Woods Hole Oceanographic Institution), which are working together to foster this initiative.
The Northeast Consortium administers nearly $5M annually from the National Oceanic and Atmospheric Administration for cooperative research on a broad range of topics including gear selectivity, fish habitat, stock assessments, and socioeconomics. The funding is appropriated to the National Marine Fisheries Service and administered by the University of New Hampshire on behalf of the Northeast Consortium. Funds are distributed through an annual open competition, which is announced via a Request for Proposals (RFP). All projects must involve partnership between commercial fishermen and scientists.
The Northeast Consortium seeks to fund projects that will be conducted in a responsible manner. Cooperative research projects should be designed to minimize any negative impacts to ecosystems or marine organisms, and be consistent with accepted ethical research practices, including the use of animals and human subjects in research, scrutiny of research protocols by an institutional board of review, etc.
NEC
largerWorkCitation
program
Northeast Consortium: Project Development
http://northeastconsortium.org/
Northeast Consortium: Project Development
<p>The Northeast Consortium encourages and funds <strong>cooperative research</strong> and monitoring projects in the Gulf of Maine and Georges Bank that have effective, <strong>equal partnerships</strong> among fishermen, scientists, educators, and marine resource managers.</p>
<p>Priority areas for Northeast Consortium funding include selective fishing-gear research and development. The development of selective fishing gears that enhance gear selectivity, target healthy stocks, reduce bycatch and discard, reduce or eliminate technical barriers to trade, minimize harvest losses, and improve fishing practices. Studies of new and developing fishing gears and technologies aimed at reducing environmental impact is funded under Project Development.</p>
NEC_ProjDev
largerWorkCitation
project
eng; USA
oceans
Gulf of Maine, off Jonesport, Maine
2011-01-20
Georges Bank, Gulf of Maine
0
BCO-DMO catalogue of parameters from Determining the effect of Eastern Maine bottom currents on lobster gear groundlines from F/V Time-n-Tide NEC-LL2006-1 in the Gulf of Maine, off Jonesport, Maine from 2007-2007 (NEC_ProjDev project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/22977.rdf
Name: curr_dir_abs
Units: degrees magnetic
Description: <p>direction of current, averaged over a 5 minute interval</p>
http://lod.bco-dmo.org/id/dataset-parameter/22978.rdf
Name: curr_speed_abs
Units: cm/sec
Description: <p>absolute current speed, averaged over a 5 minute interval</p>
http://lod.bco-dmo.org/id/dataset-parameter/22979.rdf
Name: date_local
Units: mm/dd/yyyy
Description: <p>local date</p>
http://lod.bco-dmo.org/id/dataset-parameter/22980.rdf
Name: day_local
Units: 1 to 31
Description: <p>day of month, local time</p>
http://lod.bco-dmo.org/id/dataset-parameter/22981.rdf
Name: month_local
Units: 1 to 12
Description: <p>month in local time</p>
http://lod.bco-dmo.org/id/dataset-parameter/22982.rdf
Name: temp
Units: degrees Celsius
Description: <p>temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/22983.rdf
Name: time_local
Units: HHmm
Description: <p>local time: 24 hour clock</p>
http://lod.bco-dmo.org/id/dataset-parameter/22984.rdf
Name: year
Units: YYYY
Description: <p>year of sampling</p>
http://lod.bco-dmo.org/id/dataset-parameter/22985.rdf
Name: yrday_local
Units: 1 to 365
Description: <p>local day and decimal time as 326.5 for the 326th day of the year or November 22 at 1200 hours (noon)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23145.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude in decimal degrees: North is positive and negative denotes South</p>
http://lod.bco-dmo.org/id/dataset-parameter/23146.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude in decimal degrees: East is positive and negative denotes West</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
1185725
https://datadocs.bco-dmo.org/file/XYYPGJ0S4O6M4p/groundlines_current.csv
groundlines_current.csv
Primary data file for dataset ID 3397
download
https://osprey.bco-dmo.org/dataset/3397/data/download
download
onLine
dataset
<p>Datasets from three measuring devices were collected during five months of field-work. Depth and groundline height data was extrapolated from Star-Oddi pressure sensors deployed on a 20-trap trawl each month; current velocity and directional data was recorded by a Sensor Data 6000 current meter deployed near the lobster trawl; and three months' worth of data from acoustic Doppler current profilers (ADCP), rigged in a customized 3' lobster trap directly into the trawl, gave more detailed information about the velocity and direction of current acting on the groundline.</p>
Specified by the Principal Investigator(s)
<p>All data were processed by staff from the three organizations (GOMLF, MER, and Maine Oceanographic Services) with expertise in the standard preparation and data processing procedures recommended by the instrumentation manufacturers and by established practice.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Acoustic Doppler Current Profiler
Acoustic Doppler Current Profiler
PI Supplied Instrument Name: Acoustic Doppler Current Profiler Instrument Name: Acoustic Doppler Current Profiler Instrument Short Name:ADCP 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). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/115/
Pressure Sensor
Pressure Sensor
PI Supplied Instrument Name: Pressure Sensor PI Supplied Instrument Description:Star-Oddi pressure sensors Instrument Name: Pressure Sensor Instrument Short Name:Pressure Sensor Instrument Description: A pressure sensor is a device used to measure absolute, differential, or gauge pressures. It is used only when detailed instrument documentation is not available.
Sensor Data 6000 Current Meter
Sensor Data 6000 Current Meter
PI Supplied Instrument Name: Sensor Data 6000 Current Meter PI Supplied Instrument Description:A vector averaging field current meter. Instrument Name: Sensor Data 6000 Current Meter Instrument Short Name:SD-6000 Instrument Description: The Model SD-6000 MINI current meter is a vector averaging field current meter with recording capacity for up to 6,000 measurements of current speed, direction and temperature. The instrument can be programmed to carry out measurements at given intervals from each minute to each 3 hour via PC or by holding a magnet outside marked points on the instrument.Information is communicated to and from SD-6000 via an infra-red emitter/photodiode pair mounted inside the instrument's transparent top cap. An optoconverter (SD-40) which is positioned over the instrument top cap during communication with a PC converts optosignals to standard RS-232. Download of data to a PC takes a maximum 30 seconds after which data can be immediately processed and displayed. SD-6000 can also be used as a remote monitoring instrument supplying data in real time via a cable. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/114/
Cruise: NEC-LL2006-1
NEC-LL2006-1
F/V Time-n-Tide
vessel
NEC-LL2006-1
Ms Laura Ludwig
Gulf of Maine Lobster Foundation
http://nec.whoi.edu/pdf/Ludwig2006_groundlines_final.pdf
Report describing NEC-LL2006-1
F/V Time-n-Tide
vessel