Dataset: tow_photos_rhb

Name: Photographs of net collections before any picking from NOAA Ship Ronald H. Brown (RHB0603) in the Sargasso Sea and Southeast North Atlantic Ocean from April 2006 (CMarZ_2004-2010 project)
Published: 2010-11-01
Keywords: oceans

Cite This Dataset

Spatial Extent: N:33.6946 E:-53.8881 S:14.0067 W:-70.44

Project:

Census of Marine Zooplankton-2004-2010 (CMarZ_2004-2010)

Program:

Census of Marine Life (CoML)

Scientist:

Dr Laurence P. Madin (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Technician:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI)

Version Date:

2010-11-01

Validated:

Yes

Current State:

Final no updates expected

Photographs of net collections before any picking from NOAA Ship Ronald H. Brown (RHB0603) in the Sargasso Sea and Southeast North Atlantic Ocean from April 2006 (CMarZ_2004-2010 project)

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Description

Photographs were taken in the wet lab of the Ron Brown of the contents of each net in a tray before any animals were picked out. Larry Madin set up the system and used his own equipment. See parameter list for settings. The labels in each photo are approximately 7 x 3.5 cm, to help guage the size of the specimens in the image.

Data Files

File
tow_photos_rhb.csv (Comma Separated Values (.csv), 34.88 KB) MD5:fd58bda079427bc75604a8232a942f45 Primary data file for dataset ID 2997

More Information about this dataset

Funding Sources

Funding Source	Award Number
NOAA Ocean Exploration	unknown CMarZ_2004-2010 NOAA OEP

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
RHB0603		2006-04-10	NOAA Ship Ronald H. Brown	Peter H. Wiebe (Chief Scientist)	data info

Instruments

MOCNESS.25

Supplied Description:

Instrument Type

Generic Name: MOCNESS.25

Acronym: MOC.25

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/

Generic Description:

The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. The MOCNESS-1/4 carries nine 1/4-m2 nets usually of 64 micrometer mesh and is used to sample the larger micro-zooplankton.

MOCNESS1

Supplied Description:

Instrument Type

Generic Name: MOCNESS1

Acronym: MOC1

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/

Generic Description:

The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. The MOCNESS-1 carries nine 1-m2 nets usually of 335 micrometer mesh and is intended for use with the macrozooplankton. All nets are black to reduce contrast with the background. A motor/toggle release assembly is mounted on the top portion of the frame and stainless steel cables with swaged fittings are used to attach the net bar to the toggle release. A stepping motor in a pressure compensated case filled with oil turns the escapement crankshaft of the toggle release which sequentially releases the nets to an open then closed position on command from the surface. -- from the MOCNESS Operations Manual (1999 + 2003).

MOCNESS10

Supplied Description:

Instrument Type

Generic Name: MOCNESS10

Acronym: MOC10

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/

Generic Description:

The Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) is based on the Tucker Trawl principle (Tucker, 1951). The MOCNESS-10 (with 10 m^2 nets) carries 6 nets of 3.0-mm circular mesh which are opened and closed sequentially by commands through conducting cable from the surface (Wiebe et al., 1976). In this system, "the underwater unit sends a data frame, comprising temperature, depth, conductivity, net-frame angle, flow count, time, number of open net, and net opening/closing, to the deck unit in a compressed hexadecimal format every 2 seconds and from the deck unit to a microcomputer every 4 seconds" (Wiebe et al., 1985).

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
net_size	Size of opening of each net on that instrument.	square meters	no_bcodmo_term
station	consecutive station number		station
tow	plankton tow number		tow
lat	Latitude. Negative = South.	decimal degrees	lat
lon	Longitude. Negative = West.	decimal degrees	lon
net	Number of the applicable net.		net
depth_range	Range each net fished. Used with MOCNESS tows.	meters	no_bcodmo_term
depth_min	Depth where net opened on the way down (net 0) and depth where the net closed on the way up. Used with MOCNESS data.	meters	no_bcodmo_term
depth_max	Depth where the net closed when net going down (net 0) and depth where net opened coming up. Used with MOCNESS data.	meters	no_bcodmo_term
comments	notes relative to the functioning of the nets during the tow.		comment
link_html	Where to find the full-sized pictures. Includes the thumbnail for a quick look.		no_bcodmo_term

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Database

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Dataset: tow_photos_rhb