Dataset: Guaymas Basin 2014 Sulfide

Name: Porewater sulfide concentrations from sediment cores collected on the Guaymas Basin Ridge flanks and the Sonora Margin in 2014 from R/V El Puma in October 2014
Published: 2016-10-14
Keywords: oceans

Cite This Dataset

Spatial Extent: N:27.86855 E:-111.22955 S:27.20745 W:-111.87617

Project:

Characterizing subseafloor life and environments in the Guaymas Basin (C-DEBI Guaymas Subseafloor Life)

RAPID proposal: Site characterization cruise to document the active and extensive subsurface biosphere in the Guaymas Basin (RAPID Guaymas Basin)

Program:

Center for Dark Energy Biosphere Investigations (C-DEBI)

Principal Investigator:

Andreas Teske (University of North Carolina at Chapel Hill, UNC-Chapel Hill)

Co-Principal Investigator:

Ivano Aiello (Moss Landing Marine Laboratories, MLML)

Ana Christina Ravelo (University of California-Santa Cruz, UCSC)

Contact:

Andreas Teske (University of North Carolina at Chapel Hill, UNC-Chapel Hill)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

14 October 2016

Version Date:

2016-10-14

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Porewater sulfide concentrations from sediment cores collected on the Guaymas Basin Ridge flanks and the Sonora Margin in 2014 from R/V El Puma in October 2014

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Description

Porewater sulfide concentrations from sediment cores P3, P6, P10, P11, P12 and P13, collected on the Guaymas Basin Ridge flanks and the Sonora Margin. Sediment cores were collected from R/V El Puma, the Pacific Coast research vessel of the Autonomous University of Mexico, leaving Guaymas on October 14, 2014, and heading to Mazatlan on October 27, 2014.

Methods & Sampling

Spectrophotometric analysis of porewater for sulfide concentrations was performed in the Teske lab using the methylene blue method (Cline, 1969).

References:
Cline, JD. (1969) Spectrophotometric determination of hydrogen sulfide in natural waters. Limnol Oceanogr 14: 454 – 458. doi:10.4319/lo.1969.14.3.0454

Data Processing Description

The data were measured by using sulfide standard curves. When necessary, extremely sulfide-rich samples were diluted to fall into the range of the standard curve.

BCO-DMO Processing:
- created a column for core number;
- added lat, lon, and depth for each core from the metadata form;
- modified parameter names to conform with BCO-DMO naming conventions.

Data Files

File
Guaymas_Sulfide2014.csv (Comma Separated Values (.csv), 4.68 KB) MD5:232e2933f151e25b801a2789f691d134 Primary data file for dataset ID 661808

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1449604
NSF Division of Ocean Sciences	OCE-0939564

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Guaymas_2014		2014-10-14	R/V El Puma	Andreas Teske (Principal Investigator)	data info

Instruments

None available yet

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
core	Core identifier	unitless	core_id
lat	Latitude of sampling location; postive = north	decimal degrees	lat
lon	Longitude of sampling location; negative = west	decimal degrees	lon
depth	Water depth at sampling location	meters	depth_w
core_sample	Identifier for the core sample	unitless	sample
actual_depth	Sample depth, within the core	centimeters (cm)	depth_core
sulfide_uM	Sulfide concentration	micromolar (uM)	sulfide
sulfide_uM_repeat	Repeat measurement of sulfide concentration (core P10 only)	micromolar (uM)	sulfide

Status message

Database

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Dataset: Guaymas Basin 2014 Sulfide