Dataset: Injection Sled
Deployment: OC415-02

Tracer Injection Sled data profiles

Principal Investigator:

James R. Ledwell (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

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

Project:

Eddies Dynamics, Mixing, Export, and Species composition (EDDIES)

Version:

30 October 2007

Deployment Synonyms:

EDDIES 2005 Tracer 1, OC415-2, OC415_T1

Version Date:

2007-10-30

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/452308/data

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Description

 PI:              Jim Ledwell
 of:              Woods Hole Oceanographic Institution (WHOI)
 dataset:         Tracer Injection Sled data profiles 
 dates:           20 July 2005 to 23 July 2005 (20050720-20050723) 
 location:        N: 30.595  S: 30.265  W: -67.271  E: -67.001 
 project/cruise:  EDDIES/OC415-2 2005 Tracer 1
 platform:        R/V Oceanus 
 
 Methodology

 Change history: YYMMDD
   070604: downloaded original data from EDDIES data web site;
   071030: prepared for and uploaded to OCB database by Nancy Copley (BCO-DMO)
           and Cyndy Chandler (BCO-DMO)
 
 OCB DMO Note: DMO used MATLAB to extract data from original files

Methods & Sampling

Dataset acquisition description

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Instruments

CTD Sea-Bird SBE 911plus

Supplied Description:

mounted on a custom designed injection sled; dual Conductivity and Temperature sensors

Instrument Type

Generic Name: CTD Sea-Bird SBE 911plus

Acronym: CTD SBE 911plus

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/

Generic Description:

The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

Tracer Injection Sled

Supplied Description:

Instrument Type

Generic Name: Tracer Injection Sled

Acronym: Injection Sled

Generic Description:

The tracer injection sled is an integrated instrument package that is deployed from a vessel and lowered to the target potential density surface and then towed along that surface at 0.5 m/s while the tracer is injected. The sled is neutrally buoyant and is towed at the end of a 2-meter tether attached to the end of the CTD cable, which removes much of the ship motion. To follow lower frequency displacements of the target surface, the winch is controlled automatically with feedback from a SeaBird 911plus CTD system (Ledwell et al., 1998).The CTD has dual pumped C/T sensors mounted at the front of the sled to sample water not perturbed by the thermal wake of the sled. A WET Labs fluorometer is also present along with mounted injection orifices, pumps, batteries, fluid reservoirs, and control electronics for the injection.

Wet Labs ECO-AFL/FL Fluorometer

Supplied Description:

same WET Labs fluorometer that had been used on Survey 1 on the Oceanus CTD/Rosette system

Instrument Type

Generic Name: Wet Labs ECO-AFL/FL Fluorometer

Acronym: ECO AFL/FL

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0172/

Generic Description:

The Environmental Characterization Optics (ECO) series of single channel fluorometers delivers both high resolution and wide ranges across the entire line of parameters using 14 bit digital processing. The ECO series excels in biological monitoring and dye trace studies. The potted optics block results in long term stability of the instrument and the optional anti-biofouling technology delivers truly long term field measurements.
more information from Wet Labs

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
profile_ID	profile identification number	alphanumeric	no_bcodmo_term
cast	cast number	dimensionless	cast
profile_type	profile type (up, down, flight)	dimensionless	no_bcodmo_term
SID_sled	scan id number	dimensionless	no_bcodmo_term
yrday	time in decimal days, referenced to 0 at start of 2005	decimal day	yrday
press	pressure	decibars	press
temp0	temperature, primary sensor pair (T90)	degrees Celsius	temp
temp1	temperature, secondary sensor pair (T90)	degrees Celsius	temp2
sal0	salinity, primary sensor pair	dimensionless	sal
sal1	salinity, secondary sensor pair	dimensionless	sal2
cond0	conductivity, primary sensor pair	Siemens/meter	cond
cond1	conductivity, secondary sensor pair	Siemens/meter	cond2
volts_Wetl	WET Labs fluorometer voltage	volts	flvolt
fluor_Wetl	Chlorophyll from fluorometer voltage	milligrams/meter^3	chl_a_fluor
pumpl	Tracer pump 1 status: 1=ON; 0=OFF;	dimensionless	no_bcodmo_term
pump2	Tracer pump 2 status: 1=ON; 0=OFF;	dimensionless	no_bcodmo_term

Database

Contribute Data

Dataset: Injection Sled
Deployment: OC415-02

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Injection SledDeployment: OC415-02

Dataset acquisition description

Dataset Processing Description

Dataset: Injection Sled
Deployment: OC415-02