Dataset: Dorado 2014: Solid phase chemistry from gravity cores
Deployment: AT26-24_Alvin_Dives

This dataset contains concentrations of calcium carbonate (CaCO3), total inorganic carbon (TIC), organic carbon (OC), nitrogen (N), d13C, and refractory concentrations of various metals (Fe, Cr, Cu, Mn, Zn). Gravity cores were collected during the R/V Atlantis cruise AT26-24 by the submersible Alvin in December of 2014.

Methods & Sampling

Dataset acquisition description

Gravity core sampling took place at Dorado Outcrop off the west coast of Costa Rica in the Pacific Ocean during the R/V Atlantis cruise AT26-24. For more information about operations of this cruise see the cruise page which contains a link to the cruise report (AT26-24).

Total inorganic carbon (TIC) was measured using coulometry and CaCO3 is calculated from this value. Organic carbon (OC) and nitrogen (N) were measured on a Perkin Elmer Series II 2400 CHNS/O analyzer. The Fe, Cr, Cu, Mn, and Zn represent results from dithionite extractions (see Roy et al., 2012, Continental Shelf Research, 54, 67-79). Metals were analyzed by Inductively Coupled Plasma Optical Emission Spectrophotometer (ICPOES) at the University of Akron. d13C was measured on a Carlo Erba NA-1500 elemental analyzer connected to a DeltaPlus XL mass spectrometer at Oregon State University.

Data Processing Description

Dataset Processing Description

The data have not been processed further.

BCO-DMO Processing Notes:

* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* BD indicates Below Detection
* blank values replaced with no data value 'nd'
* added dive_id,dive_date,dive_lat, and dive_lon from information in the cruise report (Table 4)

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1130146	NSF Division of Ocean Sciences
OCE-1131210	NSF Division of Ocean Sciences

Instruments

Elemental Analyzer

Supplied Name: Perkin Elmer Series II 2400 CHNS/O analyzer

Supplied Description:

Instrument Type

Generic Name: Elemental Analyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/

Generic Description:

Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.

Elemental Analyzer

Supplied Name: Carlo Erba NA-1500 elemental analyzer

Supplied Description:

Carlo Erba NA-1500 elemental analyzer connected to a DeltaPlus XL mass spectrometer.

Instrument Type

Generic Name: Elemental Analyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/

Generic Description:

Gravity Corer

Supplied Name:

Supplied Description:

Instrument Type

Generic Name: Gravity Corer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/51/

Generic Description:

The gravity corer allows researchers to sample sediment layers at the bottom of lakes or oceans. The coring device is deployed from the ship and gravity carries it to the seafloor. (http://www.whoi.edu/instruments/viewInstrument.do?id=1079).

Inductively Coupled Plasma Optical Emission Spectrometer

Supplied Name: Inductively Coupled Plasma Optical Emission Spectrophotometer (ICPOES)

Supplied Description:

Instrument Type

Generic Name: Inductively Coupled Plasma Optical Emission Spectrometer

Acronym: ICP-OES or ICP-AES

Generic Description:

Also referred to as an Inductively coupled plasma atomic emission spectroscope (ICP-AES). These instruments pass nebulised samples into an inductively-coupled gas plasma (8-10000 K) where they are atomised and excited. The de-excitation optical emissions at characteristic wavelengths are spectroscopically analysed. It is often used in the detection of trace metals.

Mass Spectrometer

Supplied Name: DeltaPlus XL mass spectrometer

Supplied Description:

Instrument Type

Generic Name: Mass Spectrometer

Acronym: Mass Spec

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/

Generic Description:

General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
core_id	Gravity core identifier	unitless	core_id
dive_id	Alvin submersible dive identifier	unitless	dive_id
dive_date	Alvin submersible dive date in format yyyy-mm-dd	unitless	date
dive_lat	Alvin submersible dive latitude; north is positive	decimal degrees	lat
dive_lon	Alvin submersible dive longitude; east is positive	decimal degrees	lon
top_depth	Top of sample interval in core	centimeters	depth_core
bottom_depth	Bottom of sample interval in core	centimeters	depth_core
depth	Middle of sample interval in core	centimeters	depth_core
CaCO3	Average concentration of calcium carbonate by weight	percent	CaCO3
CaCO3_stdev	Standard deviation of the concentration of calcium carbonate by weight	percent	CaCO3
TIC	Average concentration of total inorganic carbon by weight	percent	DIC
TIC_stdev	Standard deviation of the concentration of total inorganic carbon by weight	percent	DIC
OC	Average concentration of organic carbon (OC) by weight	percent	C_org
OC_stdev	Standard deviation of the concentration of organic carbon (OC) by weight	percent	C_org
N	Average concentration of nitrogen by weight	percent	trace_element_conc
N_stdev	Standard deviation of the concentration of nitrogen by weight	percent	trace_element_conc
Fe_R	Average refractory concentration of iron	percent	trace_metal_conc
Fe_R_stdev	Standard deviation of the refractory concentration of iron	percent	trace_metal_conc
Cr_R	Average refractory concentration of chromium	miligrams per gram (mg/g)	trace_metal_conc
Cr_R_stdev	Standard deviation of the refractory concentration of chromium	miligrams per gram (mg/g)	trace_metal_conc
Cu_R	Average refractory concentration of copper	miligrams per gram (mg/g)	trace_metal_conc
Cu_R_stdev	Standard deviation of the refractory concentration of copper	miligrams per gram (mg/g)	trace_metal_conc
Mn_R	Average refractory concentration of manganese	percent	trace_metal_conc
Mn_R_stdev	Standard deviation of the refractory concentration of manganese	percent	trace_metal_conc
Zn_R	Average refractory concentration of zinc	miligrams per gram (mg/g)	trace_metal_conc
Zn_R_stdev	Standard deviation of the refractory concentration of zinc	miligrams per gram (mg/g)	d13C
d13C	Ratio of stable isotopes 13C:12C; reference standard Vienna Pee Dee Belemnite (VPDB)	permil (0/00)	d13C
d13C_stdev	Standard deviation of the ratio of stable isotopes 13C:12C; reference standard Vienna Pee Dee Belemnite (VPDB)	permil (0/00)	d13C

Database

Contribute Data

Dataset: Dorado 2014: Solid phase chemistry from gravity cores
Deployment: AT26-24_Alvin_Dives

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Dorado 2014: Solid phase chemistry from gravity coresDeployment: AT26-24_Alvin_Dives

Dataset acquisition description

Dataset Processing Description

Dataset: Dorado 2014: Solid phase chemistry from gravity cores
Deployment: AT26-24_Alvin_Dives