Dataset: Dorado 2014: Pore fluid chemistry from gravity cores

Name: Pore fluid chemistry from gravity cores taken during R/V Atlantis cruise AT26-24 at the Dorado Outcrop near Cocos Ridge in December of 2014 (Dorado Outcrop project)
Published: 2016-12-27
Keywords: oceans

Cite This Dataset

Spatial Extent: N:9.08655 E:-87.09362 S:9.08152 W:-87.1012

Project:

Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean (Dorado Outcrop)

Program:

Center for Dark Energy Biosphere Investigations (C-DEBI)

Principal Investigator:

C. Geoffrey Wheat (University of Alaska Fairbanks, UAF)

Co-Principal Investigator:

Andrew Fisher (University of California-Santa Cruz, UCSC)

Samuel Hulme (Moss Landing Marine Laboratories, MLML)

James McManus (University of Akron, UAkron)

Beth N. Orcutt (Bigelow Laboratory for Ocean Sciences)

Contact:

C. Geoffrey Wheat (University of Alaska Fairbanks, UAF)

BCO-DMO Data Manager:

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

Version Date:

2016-12-27

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Pore fluid chemistry from gravity cores taken during R/V Atlantis cruise AT26-24 at the Dorado Outcrop near Cocos Ridge in December of 2014 (Dorado Outcrop project)

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Description

This dataset contains concentrations of phosphate, nitrate+nitirite, silicate, ammonium, stable carbon isotope ratio of dissolved inorganic carbon (d13C_DIC), and various elemental concentrations (Ba, B, Mn, Fe, Si, Sr, Na, Ca, Mg, K, Li).

Gravity cores were collected during the R/V Atlantis cruise AT26-24 by the submersible Alvin in December of 2014.

Methods & Sampling

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).

Phosphate, N+N, silicate, and NH4, were all run at Oregon State University using standard colorimetric techniques. Dissolved inorganic carbon (DIC) was run at Oregon State University using coulometry. Remaining elements were analyzed using Inductively Coupled Plasma Optical Emission Spectrophotometer (ICPOES). Comparison of Si measured via the two techniques shows an offset with the colorimetric results being ~7 uM higher than the ICP-OES results.

Data 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_date, dive_lat, dive_lon from information in the cruise report (Table 4)

Data Files

File
GravPoreFluids.csv (Comma Separated Values (.csv), 4.29 KB) MD5:f1b8dc82a61228a9beba4e0d46d04cfa Primary data file for dataset ID 671260

More Information about this dataset

Funding Sources

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

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AT26-24		2014-11-30	R/V Atlantis	C. Geoffrey Wheat (Chief Scientist)	data info
AT26-24_Alvin_Dives		2014-12-01	Alvin		data info

Instruments

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.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
cmbsf	Depth below sea floor of sample	centimeters	depth_bsf
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
phosphate	Phosphate concentration	micromolar (uM)	PO4
N_plus_N	Nitrate plus Nitrite (NO3+NO2) concentration	micromolar (uM)	NO3_NO2
silicic_acid	Silicic acid concentration	micromolar (uM)	Silicate
NH4	Ammonium concentration	micromolar (uM)	NH4
d13C_DIC	Stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC) using the Pee Dee Belemnite (PDB) standard	permil (0/00)	d13C_DIC
d13C_DIC_stdev	Standard deviation of stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC) using the Pee Dee Belemnite (PDB) standard	permil (0/00)	d13C_DIC
d13C	Stable carbon isotope ratio (13C:12C)	micromolar (uM)	d13C
Ba	Barium concentration	micromoles per kilogram (umol/kg)	Ba
B	Boron concentration	micromoles per kilogram (umol/kg)	B
Mn	Manganese concentration	micromoles per kilogram (umol/kg)	Mn
Fe	Iron concentration	micromoles per kilogram (umol/kg)	Fe
Si	Silicon concentration	micromoles per kilogram (umol/kg)	Si
Sr	Strontium concentration	micromoles per kilogram (umol/kg)	Sr
S	Sulfur concentration	millimoles per kilogram (mmol/kg)	trace_element_conc
Na	Sodium concentration	millimoles per kilogram (mmol/kg)	Na
Ca	Calcium concentration	millimoles per kilogram (mmol/kg)	Ca
Mg	Magnesium concentration	millimoles per kilogram (mmol/kg)	Mg
K	Potassium concentration	millimoles per kilogram (mmol/kg)	K
Li	Lithium concentration	micromoles per kilogram (umol/kg)	Li

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Database

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Dataset: Dorado 2014: Pore fluid chemistry from gravity cores