Instrument: MOCNESS10

Acronym: MOC10

External Identifier: skos:closeMatch: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/

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).

Datasets (13)

Dataset Name	PI-Supplied Description	PI-Supplied Name
All the species seen during broad-scale cruises from the US-GLOBEC Georges Bank Program	MOCNESS 10 meter square nets (3 millimeter mesh).	MOCNESS10
CTD data collected during MOCNESS tows to Georges Bank and the Gulf of Maine on the US GLOBEC Georges Bank Broadscale and Process cruises, 1994-1999	The MOCNESS-10 (with 10 m2 nets)carries 6 nets of 3.0-mm circular mesh.	MOCNESS10
CTD data collected during MOCNESS hauls from ARSV Laurence M. Gould and RVIB Nathaniel B. Palmer cruises LMG0203, NBP0104,and NBP0204 in the Southern Ocean from 2001-2002 (SOGLOBEC project)	The MOCNESS is based on the Tucker Trawl principle (Tucker, 1951). The particular MOCNESS system from which these CTD data came is one of two net systems. The MOCNESS-10 (with 10 m2 nets)carries 6 nets of 3.0-mm circular mesh. In both systems, "the underwater unit sends a data frame, comprised of 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... Temperature (to approximately 0.01 deg C) and conductivity are measured with SEABIRD sensors. Normally, a modified T.S.K.-flowmeter is used... Both the temperature and conductivity sensors and the flow meter are mounted on top of the frame so that they face horizontally when the frame is at a towing angle of 45deg... Calculations of salinity (to approximately 0.01 o/oo S), potential temperature (theta), potential density (sigma), the oblique and vertical velocities of the net, and the approximate volume filtered by each net are made after each string of data has been received by the computer." (Wiebe et al., 1985)	MOCNESS10
Fish abundance data from MOC-10 trawls from the ARSV Laurence M. Gould, RVIB Nathaniel B. Palmer LMG0104, NBP0104, LMG0203, NBP0204 from the Southern Ocean, 2001-2002 (SOGLOBEC project)		MOCNESS10
Zooplankton length data from the 10m2 MOCNESS from R/V Endeavor, R/V Albatross IV,and R/V Oceanusbroadscale cruises in the Gulf of Maine and Georges Bank from 1995-1999 (GB project)	MOCNESS 10 meter square nets (3 millimeter mesh).	MOCNESS10
Zooplankton abundance data from the 10m2 MOCNESS from R/V Endeavor, R/V Albatross I, and; R/V Oceanus broadscale cruises in the Gulf of Maine and Georges Bank from 1995-1999 (GB project	MOCNESS 10 meter square nets (3 millimeter mesh).	MOCNESS10
Summary deployment data for MOCNESS 1m2 and 10m2 tows from R/V Kilo Moana KM1407, KM1418, KM1506 in the Central North Pacific, Station ALOHA from 2014-2015 (SuspendSinkPart project)	The 10-square-meter mouth opening MOCNESS was a standard MOCNESS.	MOCNESS_10
MOCNESS Summary Data from R/V Polarstern ANT-XXIV_1 (PS24-1) from October to November 2007 (CMarZ_2004-2010 project)	5 nets, 335 micron mesh	MOCNESS10
Ostracod species from the Sargasso Sea collected on NOAA Ship Ronald H. Brown (RHB0603) in April 2006 (CMarZ_2004-2010 project)	This MOCNESS-10 was equipped with 333 micron mesh.	MOCNESS10
Photographs of net collections before any picking from R/V Polarstern (ANT-XXIV_1) from October to November 2007 (CMarZ_2004-2010 project)	Mocness 10 with .333micron mesh in nets 1-8 and 3mm mesh in net 0.	MOCNESS10
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)		MOCNESS10
Zooplankton identified in the Eastern Atlantic from R/V Polarstern ANT-XXIV_1 from November 2007 (CMarZ_2004-2010 project)	5 nets: net 0 with 3 mm mesh and the others with 335 micron mesh.	MOCNESS10
Zooplankton species identified from NOAA Ship Ronald H. Brown RHB0603 in the Sargasso Sea and Southeast North Atlantic Ocean from 2006-2006 (CMarZ_2004-2010 project)	Special fine mesh (335 micron) nets were used for collecting zooplankton from large volumes of water in the deep sea, to 5000m. The down-haul used a 3 mm mesh net.	MOCNESS10