Dataset: AT37-06 Acetate and methanol turnover rates

Name: Acetate and methanol turnover rates from sediment push cores collected during HOV Alvin dives during the R/V Atlantis cruise AT37-06 in Guaymas Basin, Gulf of California in December 2016
Published: 2020-06-04
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.814406.1

Spatial Extent: N:27.46667 E:-111.38417 S:27.00733 W:-111.47317

Temporal Extent: 2016-12-18 - 2016-12-24

Project:

Collaborative Research: Microbial Carbon cycling and its interactions with Sulfur and Nitrogen transformations in Guaymas Basin hydrothermal sediments (Guaymas Basin Interactions)

Principal Investigator:

Samantha B. Joye (University of Georgia, UGA)

Co-Principal Investigator:

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

BCO-DMO Data Manager:

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

Version:

Version Date:

2020-06-04

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Acetate and methanol turnover rates from sediment push cores collected during HOV Alvin dives during the R/V Atlantis cruise AT37-06 in Guaymas Basin, Gulf of California in December 2016

Abstract:

Acetate and methanol turnover rates from sediment push cores obtained using the human-occupied deep-diving vehicle (HOV) Alvin dives 4867-4872 during the R/V Atlantis cruise AT37-06 in Guaymas Basin, Gulf of California (27 00.00 N, -111 20.00 W) in December 2016. These data were published in (Zhuang et al., 2018).

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2020-06-04	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.814406.1	2020-12-09

Methods & Sampling

Methodology:

Sediment samples were collected from hydrothermal areas of Guaymas Basin in the Gulf of California during cruise AT3706 of R/V Atlantis in December 2016. Push cores were obtained using the human-occupied deep diving vehicle Alvin during dives 4867 to 4872. Porewater was extracted from the sediment by centrifugation and then filtered through a 0.2 μm syringe filter. For rate measurements, approximately 3 mL of live sediment was transferred into a modified Hungate tube as described previously (Bowles et al., 2011). At each depth, triplicate live samples and one killed control were collected for the quantification of acetate and methanol turnover rates. The details of the rate measurements can be found in Zhuang et al. (2018).

Instruments:

Methanol and ethanol in the porewater were quantified with a purge and trap system connected to a GC–FID (SRI) (Zhuang et al., 2018).

Issues of note: Due to the limited volume of porewaters, methanol and ethanol were not determined for most of the samples collected from Dives 4867 to Dive 4870.

Missing data identifiers:
* B.D.: Below detection limit.
* nd：Not determined. nd is the default missing data identifier in the BCO-DMO data system.

Data Processing Description

BCO-DMO Data Manager Processing Notes:
* Data submitted in Excel file "Data submission OCE.xlsx" sheet "Rate" extracted to csv
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions (spaces, +, and - changed to underscores). Units in parentheses removed and added to Parameter Description metadata section.
* The default missing identifier in the original file N.D. for "not determined" is displayed as "nd" in the data. nd is the default missing data identifier in the BCO-DMO system.
* removed metadata notes at the bottom of the file and moved to parameter descriptions. E.g. "B.D.: Below detection limit."
* Date formats converted to ISO 8601 yyyy-mm-dd
* Lat/lon converted to decimal degrees from degrees decimal minutes
* values rounded to integer instead of the scientific notation for _time_to_ columns which have units of days. (Acetate_turnover_time_to_methane, Actate_turnover_to_CO2,
Methanol_turnover_time_to_methane, Methanol_turnover_to_CO2)

Data Files

File
rate.csv (Comma Separated Values (.csv), 3.13 KB) MD5:c5b7854ddb176872189770037e10896f Primary data file for dataset ID 814406

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1357360

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AT37-06		2016-12-09	R/V Atlantis	Andreas Teske (Chief Scientist)	data info
AT37-06_Alvin_Dives		2016-12-09	Alvin	Andreas Teske (Chief Scientist)	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
Dive_No	Dive number	unitless	dive_id
Site	Site name	unitless	site
Sampling_date	Sample date (UTC) in ISO 8601 format yyyy-mm-dd	unitless	date_utc
Latitude	Latitude	decimal degrees	lat
Longitude	Longitude	decimal degrees	lon
Depth	Sediment sampling depth	centimeters (cm)	depth_core
Incubation_T	Incubation temperature	degrees Celsius	temp
Acetate_methanogenesis_rate	Methanogenesis rate from acetate measured with radiotracers	picomoles per cubic centimeter per day (pmol cm-3 d-1)	no_bcodmo_term
Acetate_turnover_time_to_methane	The turnover time acetate to methane measured with radiotracers	days	time_elapsed
Aceate_Oxidation_rate	Acetate oxidation rate measured with radiotracers	picomoles per cubic centimeter per day (pmol cm-3 d-1)	no_bcodmo_term
Actate_turnover_to_CO2	The turnover time of acetate to CO2 measured with radiotracers	days	time_elapsed
Methanol_methanogenesis_rate	Methanogenesis rate from methanol measured with radiotracers	picomoles per cubic centimeter per day (pmol cm-3 d-1)	no_bcodmo_term
Methanol_turnover_time_to_methane	The turnover time methanol to methane measured with radiotracers	days	time_elapsed
Methanol_Oxidation_rate	Methanol oxidation rate measured with radiotracers	picomoles per cubic centimeter per day (pmol cm-3 d-1)	no_bcodmo_term
Methanol_turnover_to_CO2	The turnover time of methanol to CO2 measured with radiotracers	days	time_elapsed

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Database

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Dataset: AT37-06 Acetate and methanol turnover rates