Dataset: Porewater H2S Chesapeake Bay 2017
Deployment: HRS1709

Porewater H2S Chesapeake Bay 2017

Principal Investigator:

George W. Luther (University of Delaware)

Co-Principal Investigator:

Bradley M. Tebo (Oregon Health & Science University, IEH/OHSU)

BCO-DMO Data Manager:

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

Project:

Collaborative Research: Transformations of soluble Mn(III) along horizontal and vertical oxygen gradients (Manganese3)

Data URL:

https://www.bco-dmo.org/dataset-deployment/840761/data

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Description

Methods & Sampling

Dataset acquisition description

In situ pump profiler cast refers to profiling with a pump profiler for O₂ and H₂S using solid state gold-amalgam electrodes for voltammetry (Luther et al, 2008; Analytical Instrument Systems DLK-60). Water was pumped aboard to make measurements on discrete samples for Mn and Fe speciation as well. See Hudson et al (2019) for more information.

H₂S
Sedimentary porewater H₂S methods (UV-Vis spectrophotometry) followed Luther et al. (2011).

Data Processing Description

Dataset Processing Description

Data Processing:
NM is used to indicate sensor not available or no measurement.

BCO-DMO Processing:
- converted date field to YYYY-MM-DD format;
- added date/time column in ISO8601 format (UTC/GMT);
- converted latitude and longitude to decimal degrees from degrees and decimal minutes.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1558692	NSF Division of Ocean Sciences
OCE-1558738	NSF Division of Ocean Sciences

Instruments

Automatic titrator

Supplied Name: AS-ALK2 Apollo Scitech

Supplied Description:

Instrument Type

Generic Name: Automatic titrator

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/

Generic Description:

Instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached.

CO2 Analyzer

Supplied Name: infrared CO2 analyzer (AS-C3, Apollo Scitech)

Supplied Description:

Instrument Type

Generic Name: CO2 Analyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/382/

Generic Description:

Measures atmospheric carbon dioxide (CO2) concentration.

Pump

Supplied Name: In situ pump profiler

Supplied Description:

Profiling was conducted with a pump profiler for using solid state gold-amalgam electrodes for voltammetry (Luther et al, 2008; Analytical Instrument Systems DLK-60). See Hudson et al (2019), doi: 10.1016/j.talanta.2019.02.076.

Instrument Type

Generic Name: Pump

Generic Description:

A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise	Cruise identifier	unitless	cruise_id
cast	Cast number	unitless	cast
sample	Sample number	unitless	sample
date	Date of sample collection; format YYYY-mm-dd	unitless	date
local_time	Time of sample collection in the local time zone (US Eastern Daylight); format: hh:mm	unitless	time
ISO_DateTime_UTC	Date and time of sample collection (UTC/GMT) formatted to ISO8601 standard: YYYY-mm-ddTHH:MMZ	unitless	ISO_DateTime_UTC
Latitude	Latitude in decimal degrees; positive values = North	degrees North	lat
Longitude	Longitude in decimal degrees; negative value = West	degrees East	lon
average_depth	Average depth of sediment porewater sample; filtered through 0.20 micrometer filters, sectioned and centrifuged in an argon filled glove bag	centimeters (cm)	depth_core
H2S	H2S concentration	micromolar (uM)	H2S

Database

Contribute Data

Dataset: Porewater H2S Chesapeake Bay 2017
Deployment: HRS1709

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Porewater H2S Chesapeake Bay 2017Deployment: HRS1709

Dataset acquisition description

Dataset Processing Description

Dataset: Porewater H2S Chesapeake Bay 2017
Deployment: HRS1709