http://lod.bco-dmo.org/id/dataset/511466
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
2014-04-15
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
VPR data from R/V Oceanus OC469-01, OC471-01 in the NW Atlantic: Woods Hole to Barbados from 2010-2011 (Trichodesmium project)
2022-06-22
publication
2022-06-22
revision
BCO-DMO Linked Data URI
2022-06-22
creation
http://lod.bco-dmo.org/id/dataset/511466
Dennis J. McGillicuddy
Woods Hole Oceanographic Institution
principalInvestigator
Cabell S. Davis
Woods Hole Oceanographic Institution
principalInvestigator
Sonya T. Dyhrman
Lamont-Doherty Earth Observatory
principalInvestigator
Dr John Waterbury
Woods Hole Oceanographic Institution
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: McGillicuddy, D. J., Dyhrman, S. T., Waterbury, J., Davis, C. S. (2022) VPR data from R/V Oceanus OC469-01, OC471-01 in the NW Atlantic: Woods Hole to Barbados from 2010-2011 (Trichodesmium project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2022-06-22 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/511466 [access date]
VPR data from the N. Atlantic Trichodesmium project, 2010 and 2011 Dataset Description: <p>The raw VPR data file collection organized by cruise.</p>
<table border="1" cellpadding="5" cellspacing="1">
<thead>
<tr>
<th scope="col"><strong>Cruise ID</strong></th>
<th scope="col"><strong>Listing of Files in Compressed tar</strong></th>
<th scope="col"><strong>Compressed tar of VPR Data Files</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>OC469 - 8 casts<br />
28 GB</td>
<td>
<p><a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr_dirs.filelist.txt" target="_blank">vpr_dirs.ls.txt</a> (40 KB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr1.filelist.txt" target="_blank">vpr1.filelist.txt</a> (2.5 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr3.filelist.txt" target="_blank">vpr3.filelist.txt</a> (85 KB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr4.filelist.txt" target="_blank">vpr4.filelist.txt</a> (3.8 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr5.filelist.txt" target="_blank">vpr5.filelist.txt</a> (1 KB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr6.filelist.txt" target="_blank">vpr6.filelist.txt</a> (155 KB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr7.filelist.txt" target="_blank">vpr7.filelist.txt</a> (3.3 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr8.filelist.txt" target="_blank">vpr8.filelist.txt</a> (1.36 MB)</p>
</td>
<td>
<p><a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr_dirs.tar.gz" target="_blank">vpr_dirs.tar.gz</a> (14 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr1.tar.gz" target="_blank">vpr1.tar.gz</a> (2.2 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr3.tar.gz" target="_blank">vpr3.tar.gz</a> (92 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr4.tar.gz" target="_blank">vpr4.tar.gz</a> (2.9 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr5.tar.gz" target="_blank">vpr5.tar.gz</a> (135 KB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr6.tar.gz" target="_blank">vpr6.tar.gz</a> (.24 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr7.tar.gz" target="_blank">vpr7.tar.gz</a> (6.1 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC469/vpr8.tar.gz" target="_blank">vpr8.tar.gz</a> (1.9 GB)</p>
<p>&nbsp;</p>
</td>
</tr>
<tr>
<td>OC471 - 16 casts<br />
150 GB</td>
<td>
<p>basic directory structure<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr_dirs.filelist.txt" target="_blank">vpr_dirs.filelist.txt</a> (127 KB)</p>
<p>data files for rois from individual VPR tows<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr1.filelist.txt" target="_blank">vpr1.filelist.txt</a> (7.7 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr2.filelist.txt" target="_blank">vpr2.filelist.txt</a> (4.8 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr3.filelist.txt" target="_blank">vpr3.filelist.txt</a> (5.0 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr4.filelist.txt" target="_blank">vpr4.filelist.txt</a> (6.0 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr5.filelist.txt" target="_blank">vpr5.filelist.txt</a> (6.5 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr6.filelist.txt" target="_blank">vpr6.filelist.txt</a> (14.8 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr7.filelist.txt" target="_blank">vpr7.filelist.txt</a> (12.1 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471vpr8.filelist.txt" target="_blank">vpr8.filelist.txt</a> (5.4 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr9.filelist.txt" target="_blank">vpr9.filelist.txt</a> (13.2 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr10.filelist.txt" target="_blank">vpr10.filelist.txt</a> (12.5 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr11.filelist.txt" target="_blank">vpr11.filelist.txt</a> (8.2 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr12.filelist.txt" target="_blank">vpr12.filelist.txt</a> (7.2 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr14.filelist.txt" target="_blank">vpr14.filelist.txt</a> (2.3 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr15.filelist.txt" target="_blank">vpr15.filelist.txt</a> (6.5 MB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr16.filelist.txt" target="_blank">vpr16.filelist.txt</a> (10.1 MB)</p>
<p>&nbsp;</p>
</td>
<td>
<p>basic directory structure<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr_dirs.tar.gz" target="_blank">vpr_dirs.tar.gz</a> (189 MB)</p>
<p>data files for rois from individual VPR tows<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr1.tar.gz" target="_blank">VPR-1: vpr1.tar.gz</a> (7.3 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr2.tar.gz" target="_blank">VPR-2: vpr2.tar.gz</a> (4.8 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr3.tar.gz" target="_blank">VPR-3: vpr3.tar.gz</a> (5 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr4.tar.gz" target="_blank">VPR-4: vpr4.tar.gz</a> (6.3 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr5.tar.gz" target="_blank">VPR-5: vpr5.tar.gz</a> (7.1 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr6.tar.gz" target="_blank">VPR-6: vpr6.tar.gz</a> (16.5 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr7.tar.gz" target="_blank">VPR-7: vpr7.tar.gz</a> (16 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr8.tar.gz" target="_blank">VPR-8: vpr8.tar.gz</a> (7.3 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr9.tar.gz" target="_blank">VPR-9: vpr9.tar.gz</a> (18.7 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr10.tar.gz" target="_blank">VPR-10: vpr10.tar.gz</a> (16.9 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr11.tar.gz" target="_blank">VPR-11: vpr11.tar.gz</a> (11 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr12.tar.gz" target="_blank">VPR-12: vpr12.tar.gz</a> (9.2 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr14.tar.gz" target="_blank">VPR-14: vpr14.tar.gz</a> (2.9 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr15.tar.gz" target="_blank">VPR-15: vpr15.tar.gz</a> (7.8 GB)<br />
<a href="http://dmoserv3.bco-dmo.org/data/mcgillicuddy/vpr/OC471/vpr16.tar.gz" target="_blank">VPR-16: vpr16.tar.gz</a> (12.9 GB)</p>
</td>
</tr>
</tbody>
</table>
<p><strong>Hint:&nbsp;</strong>To work with the raw files files, make a separate subdirectory for the cruise and download the compressed data file tar files to that cruise subdirectory. Then decompress and unpack only the .tar.gz files for that cruise into that cruise subdirectory. For example, to work with the VPR data files from OC469,&nbsp;on a linux system:</p>
<ol>
<li>mkdir OC469; cd OC469</li>
<li>download all the &nbsp;.tar.gz files for cruise OC469</li>
<li>gunzip OC469_vpr.tar.gz</li>
<li>tar -xvf OC469_vpr.tar</li>
</ol>
<p>After the OC469 tar file is unpacked, it will require about 28 GB of disk space (the Total size noted in column (1), and you should have a collection of subdirectories similar to those listed above for OC469 VPR file set.</p>
<p><strong>Contact:</strong></p>
<p>Anyone trying to use these raw VPR files is encouraged to contact either Dennis McGillicuddy with any questions.</p>
<p><strong>Dennis McGillicuddy</strong><br />
Applied Ocean Physics &amp; Engineering<br />
Woods Hole Oceanographic Institution<br />
MS #11, Bigelow 209A<br />
Woods Hole, Ma. 02543</p>
<p><a href="mailto:mcgillic@whoi.edu">mcgillic@whoi.edu</a><br />
Office Phone: +1 508 289 2683<br />
<a href="http://www.whoi.edu/profile.do?id=dmcgillicuddy">http://www.whoi.edu/profile.do?id=dmcgillicuddy</a></p> Methods and Sampling: <p>Each VPR tow (VPR1, VPR2, VPR3, etc.) has a subdirectory that includes:</p>
<p>a VPRstartup_readme.txt file and these subdirectories:<br />
/calibration<br />
/processed<br />
/rois<br />
/trois</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0925284 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0925284
completed
Dennis J. McGillicuddy
Woods Hole Oceanographic Institution
508-289-2683
266 Woods Hole Road Bigelow 209B, Mail Stop 11
Woods Hole
MA
02543
USA
dmcgillicuddy@whoi.edu
pointOfContact
Cabell S. Davis
Woods Hole Oceanographic Institution
508-289-2333
Redfield 2-20, MS-33
Woods Hole
MA
02543
USA
cdavis@whoi.edu
pointOfContact
Sonya T. Dyhrman
Lamont-Doherty Earth Observatory
845-365-8465
102E Geoscience 61 Route 9W, PO Box 1000
Palisades
NY
10964
USA
dyhrman@ldeo.columbia.edu
pointOfContact
Dr John Waterbury
Woods Hole Oceanographic Institution
508 289 2742
Dept. of Biology Watson Building 107, Biology, MS#51
Woods Hole
MA
02543
USA
jwaterbury@whoi.edu
pointOfContact
asNeeded
Dataset Version: 2
Unknown
cruise_id
num_casts
size_unpacked
file_lists
file_list_size
compressed_files
compressed_files_size
VPR
theme
None, User defined
Cruise identfier
No BCO-DMO term
featureType
BCO-DMO Standard Parameters
Video Plankton Recorder
instrument
BCO-DMO Standard Instruments
OC469-01
OC471-01
service
Deployment Activity
NW Atlantic: Woods Hole to Barbados
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.
Ocean Carbon and Biogeochemistry
http://us-ocb.org/
Ocean Carbon and Biogeochemistry
The Ocean Carbon and Biogeochemistry (OCB) program focuses on the ocean's role as a component of the global Earth system, bringing together research in geochemistry, ocean physics, and ecology that inform on and advance our understanding of ocean biogeochemistry. The overall program goals are to promote, plan, and coordinate collaborative, multidisciplinary research opportunities within the U.S. research community and with international partners. Important OCB-related activities currently include: the Ocean Carbon and Climate Change (OCCC) and the North American Carbon Program (NACP); U.S. contributions to IMBER, SOLAS, CARBOOCEAN; and numerous U.S. single-investigator and medium-size research projects funded by U.S. federal agencies including NASA, NOAA, and NSF.
The scientific mission of OCB is to study the evolving role of the ocean in the global carbon cycle, in the face of environmental variability and change through studies of marine biogeochemical cycles and associated ecosystems.
The overarching OCB science themes include improved understanding and prediction of: 1) oceanic uptake and release of atmospheric CO2 and other greenhouse gases and 2) environmental sensitivities of biogeochemical cycles, marine ecosystems, and interactions between the two.
The OCB Research Priorities (updated January 2012) include: ocean acidification; terrestrial/coastal carbon fluxes and exchanges; climate sensitivities of and change in ecosystem structure and associated impacts on biogeochemical cycles; mesopelagic ecological and biogeochemical interactions; benthic-pelagic feedbacks on biogeochemical cycles; ocean carbon uptake and storage; and expanding low-oxygen conditions in the coastal and open oceans.
OCB
largerWorkCitation
program
Quantification of Trichodesmium spp. vertical and horizontal abundance patterns and nitrogen fixation in the western North Atlantic
https://osprey.bco-dmo.org/project/2104
Quantification of Trichodesmium spp. vertical and horizontal abundance patterns and nitrogen fixation in the western North Atlantic
<p>The diazotroph Trichodesmium spp. constitutes a major pathway of nitrogen flow into marine planktonic ecosystems, but estimates of its impact on global nitrogen budgets vary widely. Sampling is made difficult by the fragility of the organism with the consequence that Trichodesmium spp. are difficult to manipulate in both field and laboratory experiments. Optical methods that sample the organism nondestructively are thus appealing. A recent transatlantic survey using the Video Plankton Recorder (VPR) revealed unexpectedly high abundance of Trichodesmium spp. at depth, suggesting the vertical distribution of the organism within the euphotic zone may be more uniform than previously thought (Davis, C.S. and McGillicuddy, D.J., 2006. Transatlantic Abundance of the N2-Fixing Colonial Cyanobacterium Trichodesmium. Science, 312: 1517-1520). Application of a simple bio-optical model of productivity to the observed profile of abundance suggests the depth-integrated nitrogen fixation rate could be three to five times higher than that based on the canonical profile of exponential decrease in abundance with depth. However, the observations described in Davis and McGillicuddy (2006) come from a latitude range where Trichodesmium spp. are not especially abundant. This raises a key question: is there a similar vertical distribution in waters further to the south, where Trichodesmium spp. are an order of magnitude more abundant overall? If so, are the deep populations actively fixing nitrogen? If so, the implications for the global nitrogen budget would be substantial.</p>
<p>To answer these questions, we propose two cruises to survey the waters of the southern Sargasso Sea and tropical Atlantic, where Trichodesmium spp. are commonly found in high abundance. Along-track VPR measurements will document the abundance and distribution of the organism on the scale of meters to thousands of kilometers. Standard hydrographic station work will provide for comparison of VPR-based estimates with microscope counts, as well as some additional in situ optical methods. A combination of nifH gene expression assays and direct determinations of N2-fixation rates will be made to assess whether or not the deep populations are actively fixing nitrogen. These observations will be synthesized in the context of an eddy-resolving numerical model. This will permit investigation of the mechanisms controlling the vertical and horizontal distribution and abundance of Trichodesmium spp. at multiple scales, including the enigmatic association of relative maxima in abundance with anticyclonic eddies (also described in Davis and McGillicuddy, 2006). Moreover, integration of these observations into the numerical model will facilitate revised estimates of nitrogen fixation by Trichodesmium spp. in the North Atlantic. The intellectual merit of this effort stems from our interdisciplinary approach (physics and biology), advanced observational techniques (optical imaging, molecular methods) and integrated analysis in the context of state-of-the-art coupled physical-biogeochemical models.</p>
Trichodesmium
largerWorkCitation
project
eng; USA
biota
oceans
NW Atlantic: Woods Hole to Barbados
2022-06-22
0
BCO-DMO catalogue of parameters from VPR data from R/V Oceanus OC469-01, OC471-01 in the NW Atlantic: Woods Hole to Barbados from 2010-2011 (Trichodesmium 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/550587.rdf
Name: cruise_id
Units: unitless
Description: <p>cruise identification</p>
http://lod.bco-dmo.org/id/dataset-parameter/550588.rdf
Name: num_casts
Units: unitless
Description: <p>number of VPR casts available</p>
http://lod.bco-dmo.org/id/dataset-parameter/550589.rdf
Name: size_unpacked
Units: gigabytes
Description: <p>size of files for whole cruise VPR's once uncompressed</p>
http://lod.bco-dmo.org/id/dataset-parameter/550590.rdf
Name: file_lists
Units: unitless
Description: <p>text file listing of compressed VPR files; one file per cast</p>
http://lod.bco-dmo.org/id/dataset-parameter/550591.rdf
Name: file_list_size
Units: megabytes
Description: <p>download size of text files</p>
http://lod.bco-dmo.org/id/dataset-parameter/550592.rdf
Name: compressed_files
Units: unitless
Description: <p>name and link for compressed VPR file; one file per cast</p>
http://lod.bco-dmo.org/id/dataset-parameter/550593.rdf
Name: compressed_files_size
Units: KB=kilobytes; MB=megabytes; GB=gigabytes
Description: <p>download size of compressed files</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
7029
https://datadocs.bco-dmo.org/file/6YYMw3vu1MkG3v/vpr_filelist_tricho.csv
vpr_filelist_tricho.csv
Primary data file for dataset ID 511466
download
https://osprey.bco-dmo.org/dataset/511466/data/download
download
onLine
dataset
<p>Each VPR tow (VPR1, VPR2, VPR3, etc.) has a subdirectory that includes:</p>
<p>a VPRstartup_readme.txt file and these subdirectories:<br />
/calibration<br />
/processed<br />
/rois<br />
/trois</p>
Specified by the Principal Investigator(s)
<p>The images (.TIFF files)&nbsp;were extracted from video using Matlab-based software. &nbsp;The data are raw; no processing has been applied.<br />
<br />
BCO-DMO Data Manager Notes:<br />
* Version 1&nbsp;2014-04-08 replaced by Version 2 2022-06-22<br />
* [2022-06-22] Fixed broken link in metadata and data since it was broken due to a&nbsp;missing a slash between the cruise and filename "OC471vpr16.filelist.txt" -&gt; "OC471/vpr16.filelist.txt"</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
VPR
VPR
PI Supplied Instrument Name: VPR PI Supplied Instrument Description:The Video Plankton Recorder (VPR) is a video-microscope system used for imaging plankton and other particulate matter in the size range from a few micrometers to several centimeters. The VPR is essentially an underwater microscope. It consists of four video cameras (with magnifying optics) synchronized at 60 fields per second (fps) to a red-filtered 80 W xenon strobe (pulse duration = 1 microsecond). The current lens on each camera can be adjusted to provide a field of view between 5 mm and 10 cm. Instrument Name: Video Plankton Recorder Instrument Short Name:VPR Instrument Description: The Video Plankton Recorder (VPR) is a video-microscope system used for imaging plankton and other particulate matter in the size range from a few micrometers to several centimeters. The VPR is essentially an underwater microscope. It consists of four video cameras (with magnifying optics) synchronized at 60 fields per second (fps) to a red-filtered 80 W xenon strobe (pulse duration = 1 microsecond). The current lens on each camera can be adjusted to provide a field of view between 5 mm and 10 cm. Use of higher magnification lenses is currently being explored for viewing protozoans (less than 1 micrometer resolution). The four cameras are set for concentric viewing fields so that a range of up to four magnifications can be viewed simultaneously, allowing a wide size range of plankton to be sampled. Depth of field is adjusted by the lens aperture setting, and the volume sampled in each video field ranges from about 1 ml to 1 liter, depending on lens settings. The cameras have been configured for stereoscopic viewing as well.A strobe on the other arm illuminates the imaged volume and flashes 60 times per second, producing 60 images per second of the particles and plankton in the water. The images are then saved internally on a computer hard disk and later plotted.
Deployment: Most commonly, the VPR is mounted in a frame and lowered into the water from the stern of the ship. Sometimes, a CTD also is mounted next to the VPR to collect depth, temperature, and salinity information at the same time as each video image. The instrument is lowered down through the water to a maximum depth of 350 meters to generate a profile of plankton/particle abundance and taxon group along with temperature and salinity. In addition to the towed configuration for mapping plankton distributions, it is possible to deploy the VPR in a fixed position (on a mooring) for viewing plankton swimming behaviors in two or three dimensions. The VPR instrument system has been used in both configurations, and deployment on ROVs has been proposed.
This definition was taken from the WHOI Ocean Instruments Web site and from a US GLOBEC Newsletter.
Cruise: OC469-01
OC469-01
R/V Oceanus
Community Standard Description
International Council for the Exploration of the Sea
R/V Oceanus
vessel
OC469-01
Dennis J. McGillicuddy
Woods Hole Oceanographic Institution
Cruise: OC471-01
OC471-01
R/V Oceanus
Community Standard Description
International Council for the Exploration of the Sea
R/V Oceanus
vessel
OC471-01
Dennis J. McGillicuddy
Woods Hole Oceanographic Institution
R/V Oceanus
Community Standard Description
International Council for the Exploration of the Sea
R/V Oceanus
vessel