Dataset: OPC_seasoar
Deployment: KIWI8

Optical Plankton Counter data - SEASOAR Tows

Principal Investigator:

Dr Mark Huntley (University of California-San Diego, UCSD-SIO)

Co-Principal Investigator:

Meng Zhou (University of Massachusetts Boston, UMB-SMS)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. JGOFS Antarctic Environment and Southern Ocean Process Study (AESOPS)

Version:

March 22, 2001

Deployment Synonyms:

RR8, APFZ Survey 2 cruise, AESOPS

Version Date:

2001-03-22

Data URL:

https://www.bco-dmo.org/dataset-deployment/451207/data

Expand/Collapse All

Description

Optical Plankton Counter data - SEASOAR Tows

Methods & Sampling

Dataset acquisition description

Deployment-specific acquisition description

   PI:              Mark Huntley and Meng Zhou
   of:              Scripps Institution of Oceanography (Huntley) and
                    University of Minnesota, Duluth (Zhou)
   dataset:         Optical Plankton Counter data - SEASOAR Tows
   dates:           January 12, 1997 to January 29, 1997
   location:        N: -57.009  S: -67.788  W: -171.908  E: -170.075
   project/cruise:  AESOPS/KIWI08 - APFZ Polar Front Survey Cruise 2
   ship:            R/V Roger Revelle
 
   Sampling Methodology

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Instruments

MOCNESS

Supplied Description:

MOCNESS (Multiple Opening and Closing Nets Envionment Sampling System)

Instrument Type

Generic Name: MOCNESS

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. There are currently 8 different sizes of MOCNESS in existence which are designed for capture of different size ranges of zooplankton and micro-nekton Each system is designated according to the size of the net mouth opening and in two cases, the number of nets it carries. The original MOCNESS (Wiebe et al, 1976) was a redesigned and improved version of a system described by Frost and McCrone (1974).(from MOCNESS manual) This designation is used when the specific type of MOCNESS (number and size of nets) was not specified by the contributing investigator.

Optical Plankton Counter

Supplied Description:

Instrument Type

Generic Name: Optical Plankton Counter

Acronym: OPC

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/352/

Generic Description:

An OPC provides quantitative measurements of abundance and sizes of mesozooplankton ranging between approximately 0.25 and 14 mm in Equivalent Spherical Diameter (ESD), and has the capability to integrate measurements from other sensors such as a CTD, fluorometer and Global Positioning System (GPS). It can be deployed on a variety of instruments such as SeaSoar, Aries, Scanfish, MOCNESS, a bongo net or simple towing frame. The data from an OPC are typically transmitted to a data acquisition computer through two conducting wires in a towing cable at real time, but it can also be modified to have an internal memory. Large amounts of data are produced. The procedures employed by OPC users vary from; i) estimating integrated biomass by integrating the OPC size distributions, ii) comparing size distributions between OPC and net samples, and iii) simply isolating a size region in the OPC size distribution which correspond solely to specific taxa, eg. Calanus spp..

from: Zhou, M., Tande, K., 2002. Optical Plankton Counter Workshop. GLOBEC Report 17, University of Tromso, Tromso

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
depth_begin	starting depth of the integrated interval	meter	depth_begin
depth_end	ending depth of the integrated interval	meter	depth_end
lat_n	nominal latitude of the integrated interval	decimal degrees	no_bcodmo_term
lon_n	nominal longitude of the integrated interval	decimal degrees	no_bcodmo_term
ESD_XX	Equivalent Spherical Diameter size class number from 1 to 40 (see ESD note)		no_bcodmo_term
event	event number from event log		event
sta	station number from event log		sta
vol_filt	water volume filtered	m^3	vol_filt
counts_tot	total counts collected within the integrated interval normalized by the water volume filtered		no_bcodmo_term

Database

Contribute Data

Dataset: OPC_seasoar
Deployment: KIWI8

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: OPC_seasoarDeployment: KIWI8

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: OPC_seasoar
Deployment: KIWI8