Dataset: Hydrothermal vent porewater nutrients - TN TC DOC DIC DON

Name: Sediment TN,TC and porewater DOC, DIC, DON concentrations from pushcore samples collected at Guaymas Basin hydrothermal vents via Alvin dives on RV/Atlantis cruise AT42-05, Nov. 2018
Published: 2019-07-29
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.773727.1

Spatial Extent: N:27.0116 E:-111.4044 S:27.0078 W:-111.4071

Temporal Extent: 2018-11-17 - 2018-11-25

Project:

Collaborative Research: Hydrothermal Fungi in the Guaymas Basin Hydrocarbon Ecosystem (HOTFUN)

Principal Investigator:

Virginia P. Edgcomb (Woods Hole Oceanographic Institution, WHOI)

Co-Principal Investigator:

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

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2019-07-29

Restricted:

Release Date:

2019-07-30

Validated:

Yes

Current State:

Final no updates expected

Sediment TN,TC and porewater DOC, DIC, DON concentrations from pushcore samples collected at Guaymas Basin hydrothermal vents via Alvin dives on RV/Atlantis cruise AT42-05, Nov. 2018

Abstract:

Porewater nutrient concentrations from pushcore samples collected at two locations in the Guaymas Basin hydrothermal vents region during Alvin dives on RV/Atlantis cruise AT42-05, Nov. 2018. TN, TC, DOC, DIC, and DON concentrations at different depths within the cores are reported.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2019-07-29	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.773727.1	2019-07-31

Description

Methods & Sampling

Alvin pushcores dedicated to nutrient analyses were sectioned to recover the 0-6cm, 6-12, and 12-18cm fractions, or the 0-10, 10-20, and 20-30cm fractions. Two ~40ml samples of sediment were placed in 50 ml Falcon tubes and were centrifuged at 3000 rpm for 15 minutes to separate porewater from the sediment.

TC and TN: The sediment cakes were analyzed for %Total Nitrogen (TN) and %Total Carbon (TC).

DIC, DOC, DON: 10 ml of the porewater was collected into septa vials for dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), and dissolved organic nitrogen (DON). The headspace was flushed with nitrogen and the samples were stored inverted at 4oC.

All porewater analyses were performed at Louisiana State University Wetland Biogeochemistry Analytical Services.;

Data Processing Description

BCO-DMO Processing Notes:
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions and match porewater nutrients dataset
- re-formatted date from d/m/yyyy to ISO format: yyyy-mm-dd
- TN and TC table was combined with the DOC, DIC, DON table

Data Files

File
nuts_porewater_TN-TC-DOC-DIC-DON.csv (Comma Separated Values (.csv), 3.93 KB) MD5:abe2553965f3f210a6d6ea72d03c7617 Primary data file for dataset ID 773727

Supplemental Files

File
Quality control report: TN/TC/DIC/DOC/DON filename: Dataset773727_QC_TN-TC-DOC-DIC-DON_suppl.pdf (Portable Document Format (.pdf), 154.03 KB) MD5:7bce48f043f71df9b6277396adb8931f QC standards and % recovery for TN, TC, DIC, DOC and DON from porewater nutrient analyses from pushcore samples at different depths at hydrothermal vents from RV/Atlantis cruise AT42-05, Nov. 2018.

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1829903

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AT42-05_Alvin_Dives		2018-11-17	Alvin	Andreas Teske (Chief Scientist)	data info
AT42-05		2018-11-15	R/V Atlantis	Andreas Teske (Chief Scientist)	data info

Instruments

Nutrient Autoanalyzer

Supplied Name:

Supplied Description:

Instrument Type

Generic Name: Nutrient Autoanalyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/

Generic Description:

Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples.

Push Corer

Supplied Name:

Supplied Description:

Used to collect sediment samples

Instrument Type

Generic Name: Push Corer

Generic Description:

Capable of being performed in numerous environments, push coring is just as it sounds. Push coring is simply pushing the core barrel (often an aluminum or polycarbonate tube) into the sediment by hand. A push core is useful in that it causes very little disturbance to the more delicate upper layers of a sub-aqueous sediment.

Description obtained from: http://web.whoi.edu/coastal-group/about/how-we-work/field-methods/coring/

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Date	sampling date - local time	unitless	date_local
Site	sampling site name	unitless	site
lat	latitude; north is positive	decimal degrees	lat
lon	longitude; east is postive	decimal degrees	lon
Dive	Alvin dive number	unitless	dive_id
Sample_ID	sample identifier	unitless	sample
Total_N_pcent	Total Nitrogen (TN)	percent	N
Total_C_pcent	Total Carbon (TC)	percent	C
DOC_mg_L	dissolved organic carbon (DOC) concentration	milligrams/liter	DOC
DIC_mg_L	dissolved inorganic carbon (DIC) concentration	milligrams/liter	DIC
DON_mg_L	dissolved organic nitrogen (DON) concentration	milligrams/liter	DON