Dataset: CTD
Deployment: TT013

CTD profile data with beam attenuation

Principal Investigator:

James W. Murray (University of Washington, UW)

Co-Principal Investigator:

Wilford D. Gardner (Texas A&M University, TAMU)

BCO-DMO Data Manager:

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

Project:

U.S. JGOFS Equatorial Pacific (EqPac)

Version:

October 21, 1996

Deployment Synonyms:

EqPac Benthic Survey

Version Date:

1996-10-21

Data URL:

https://www.bco-dmo.org/dataset-deployment/450982/data

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Description

CTD profile data averaged at two decibar intervals (Murray) with beam attenuation data (Gardner)

Methods & Sampling

Dataset acquisition description

See Platform deployments for cruise specific documentation

Deployment-specific acquisition description

   PI:              James Murray
   dataset:         CTD profile data averaged at two decibar intervals
   dates:           November 02, 1992 to December 07, 1992
   location:        N: 8.9433  S: -11.9598  W: -140.1463  E: -134.9498
   project/cruise:  EQPAC/TT013 - Benthic cruise
   ship:            Thomas Thompson
 
   DMO note:  Although the parameter fluor, beam_cp, and par are reported
   with this data, there are no data values (all are entered as nd).

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Instruments

CTD Sea-Bird

Supplied Name: SeabirdCTD

Supplied Description:

University of Washington's SeaBird CTD

Instrument Type

Generic Name: CTD Sea-Bird

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.

Sea Tech Transmissometer

Supplied Name: SeaTech Transmissometer

Supplied Description:

25 cm Sea Tech Transmissometer

Instrument Type

Generic Name: Sea Tech Transmissometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0003/

Generic Description:

The Sea Tech Transmissometer can be deployed in either moored or profiling mode to estimate the concentration of suspended or particulate matter in seawater. The transmissometer measures the beam attenuation coefficient in the red spectral band (660 nm) of the laser lightsource over the instrument's path-length (e.g. 20 or 25 cm). This instrument designation is used when specific make and model are not known. The Sea Tech Transmissometer was manufactured by Sea Tech, Inc. (Corvalis, OR, USA).

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
sta	station number from event log		no_bcodmo_term
cast	CTD cast number from event log		cast
event	unique number assigned to each sampling operation consisting of month MM, day DD, hour HH and minute mm		event
year	year (YYYY)		year
mon	month of year (MM)		no_bcodmo_term
day	day of month (DD)		no_bcodmo_term
time	time (HHmm)		no_bcodmo_term
lat	latitude of cast, negative = south	decimal degrees	lat
lon	longitude of cast, negative = west	decimal degrees	lon
depth	depth of sample	meters	depth
press	depth of sample reported as pressure	decibars	press
temp	temperature, IPTS-68	degrees C	temp
cond	conductivity CTD	mmhos	cond
sal	salinity, PSS-78	dimensionless	sal
potemp	potential temperature, IPTS-68	degrees C	potemp
sig_th	sigma theta (potential density)	kilogram/meter^3	no_bcodmo_term
sig_t	sigma-t	kilogram/meter^3	no_bcodmo_term
fluor	fluorescence	milligram/meter^3	fluor
beam_cp	beam attenuation coefficient due to particles	meters^-1	no_bcodmo_term
par	photosynthetically available radiation	uE/m^2/sec	PAR

Database

Contribute Data

Dataset: CTD
Deployment: TT013

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: CTDDeployment: TT013

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: CTD
Deployment: TT013