Dataset: OC1703A CTD

Name: CTD profiles from R/V Oceanus cruise OC1703A along the Northern California continental shelf in March of 2017 (Deep Sediment N Fix project)
Published: 2017-10-25
Keywords: oceans

Cite This Dataset

Spatial Extent: N:37.13467 E:-122.544 S:35.689 W:-124.922

Project:

Nitrogen Fixation in Deep-Sea Sediments (Deep Sediment N Fix)

Principal Investigator:

Anne E. Dekas (Stanford University)

Contact:

Anne E. Dekas (Stanford University)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version Date:

2017-10-25

Restricted:

Validated:

Yes

Current State:

Final no updates expected

CTD profiles from R/V Oceanus cruise OC1703A along the Northern California continental shelf in March of 2017 (Deep Sediment N Fix project)

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Description

CTD data collected from stations along the Northern California continental shelf at depths ranging from 100 to 4500 meters during R/V Oceanus cruise OC1703A from the 12th to 23rd of March 2017.

Methods & Sampling

CTD profiles

Data Processing Description

In addition to the data available by clicking the "Get Data" button, the Seasave formatted files originally submitted to BCO-DMO are available for download.
* OC1703A_CTD.zip (11.2 MB)
* Software used to generate files: Seasave V 7.23.2

BCO-DMO Data Manager Processing Notes:
* added a conventional header with dataset name, PI name, version date
* included information in original filenames for ctd number
* NMEA latitude, longitude and UTC time extracted from Seasave V 7.23.2 files.
* NMEA UTC timestamp converted to ISO DateTime format
* Descriptive data parameter names supplied by data contributor were used in the dataset, original seasave variable names are included in the data parameter descriptions.
* seasave header lines were commented out in this dataset. but the original seasave files with all header information are available for download (see zip file link above).

Data Files

File
CTD.csv (Comma Separated Values (.csv), 153.68 MB) MD5:33d020688075c6717d3df9d93c1bf0f3 Primary data file for dataset ID 717418

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1634297

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
OC1703A		2017-03-14	R/V Oceanus	Anne E. Dekas (Chief Scientist)	data info

Instruments

CTD Sea-Bird 9

Supplied Name: Sea-Bird SBE 9

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird 9

Acronym: CTD SBE 9

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

Generic Description:

The Sea-Bird SBE 9 is a type of CTD instrument package. The SBE 9 is the Underwater Unit and is most often combined with the SBE 11 Deck Unit (for real-time readout using conductive wire) when deployed from a research vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorometer, altimeter, etc.). Note that in most cases, it is more accurate to specify SBE 911 than SBE 9 since it is likely a SBE 11 deck unit was used. more information from Sea-Bird Electronics

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise	Cruise identifier	unitless	cruise_id
site	Site identifier (format is OC-Nominal depth)	meters	site
CTD_deployment	CTD cast number	unitless	cast
lat	Latitude of CTD profile	decimal degrees	lat
lon	Longitude of CTD profile	decimal degrees	lon
ISO_DateTime_UTC	ISO timestamp based on the ISO 8601:2004(E) standard in format YYYY-mm-ddTHH:MM:SSZ (UTC)	unitless	ISO_DateTime_UTC
PSU	Salinity [Seasave name sal00]	Practical Salinity Units (PSU)	sal
PAR	Photosynthetically Active Radiation (PAR) Irradiance from Biospherical/Licor [Seasave name par]	microEinsteins per meter squared per second (uEinsteins/m2/s)	PAR
Temperature	Primary temperature (ITS-90) [Seasave name t090C]	degrees Celsius (deg C)	temp
Temperature_2	Secondary temperature [Seasave name t190C]	degrees Celsius (deg C)	temp
sigma_t	Density; sigma-t [Seasave name sigma-t00]	kilograms per meter cubed (kg/m3)	sigma_t
Beam_Attenuation	Beam attenuation from WET Labs C-Star [Seasave name CStarAt0]	per meter (1/m)	beam_cp
Fluorescence	Fluorescence from WET Labs ECO-AFL/FL [Seasave name flECO-AFL]	milligrams per meter cubed (mg/m3)	fluor
O2_ml_L	Dissolved oxygen [Seasave name sbeox0ML/L]	milliliters per liter (ml/l)	O2
Depth_m	Depth [Seasave name depSM]	meters (m)	depth
Depth_nominal	Nominal depth of cast	meters	depth_n

Status message

Database

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Dataset: OC1703A CTD