Dataset: Atlantic Sediment Black Carbon

Name: Atlantic sediment black carbon, total organic carbon, and stable carbon ratio (13C) values from samples collected using a multi-corer and box corer from multiple cruises throughout the Atlantic between 1994 and 2010
Published: 2023-09-14
Keywords: Black carbon, sediments, Atlantic Ocean, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.908373.1

Spatial Extent: N:16.8344 E:312.5156 S:-37.6181 W:9.3844

Temporal Extent: 1994-07-26 - 2010-08-13

Project:

Concentrations and source assessment of black carbon across tropical Atlantic air and sediment (Tropical Atlantic Black Carbon)

The Black Carbon Cycle: Budget and Fluxes of Black Carbon in South Atlantic Sediments (Black Carbon Cycle)

Principal Investigator:

Rainer Lohmann (University of Rhode Island, URI)

Student:

Kari Ann St. Laurent (University of Rhode Island, URI)

BCO-DMO Data Manager:

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

Version:

Version Date:

2023-09-14

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Atlantic sediment black carbon, total organic carbon, and stable carbon ratio (13C) values from samples collected using a multi-corer and box corer from multiple cruises throughout the Atlantic between 1994 and 2010

Abstract:

These data include sediment black carbon and total organic carbon concentrations and stable carbon ratio (13C) values. These data were collected on multiple cruises in throughout the Atlantic; specifically, in the Amazon Delta (EN-480; July 2010), Sierra Leone Rise (EN-481; August 2010), Niger Delta (GeoB 4901, GeoB 4903, GeoB 4904, GeoB 4905, GeoB 4907, and GeoB 4908; February/March 1998), Senegal Delta (GeoB 9501; April/May 2003), and Northwest Argentina Basin (GeoB 2814; July/August 1994). Sediments were collected using multi-corer and box corer samples and kept frozen until analysis. Total organic carbon and black carbon concentrations and stable carbon ratio values were determined on an isotope ratio mass spectrometer coupled to an elemental analyzer. The black carbon fraction was determined using the chemothermal oxidation at 375°C method. These data help better constrain pyrogenic carbon accumulation rates into Atlantic sediments. These data were published in St.Laurent, et al. (2023).

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2023-09-14	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.908373.1	2023-10-06

Methods & Sampling

Sediment samples were collected via a 4-barrel multi-corer (R/V Endeavor) and box corer (GeoB; samples previously collected from the Department of Geosciences at Bremen University, see MARUM GeoB Core Repository https://www.marum.de/en/Infrastructure/MARUM-GeoB-Core-Repository.html). Sediments collected on the R/V Endeavor were segmented into 1-2 cm sections, dried in a drying oven (35°C) and homogenized via mortar and pestle; sediments from GeoB had previously been segmented into 1-10cm sections, freeze-dried and ground with a mortar and pestle. All sediments were decalcified using 10% hydrochloric acid and kept frozen until processed. Black carbon was isolated using the chemothermal oxidation at 375°C method.

Instruments:
Sediment samples from the GeoB cores were quantified using an Elementar Vario MICRO cube elemental analyzer coupled to an Isoprime100 isotope ratio-mass spectrometer (IR-MS); sediments collected on EN-480 and EN-481 were analyzed on a Carlo Erba elemental analyzer coupled to a GV Optima 588 system IR-MS. The detection limit of both instruments was 100 ng of carbon.

Location

Amazon Delta (approximately: 4 N, 47 W; 2400-3500m); Sierra Leone Rise (approximately: 7 N, 20 W; 2800-3800m), Niger Delta (approximately: 1 N, 8 E; 1200-3000m), Senegal Delta (approximately: 17 N, 17 W; 330 m), and Northwest Argentina Basin (approximately: 37 S, 39 W; 5000m)

Cruise or Deployment

R/V Endeavor (EN-480, EN-481; July/August 2010); GeoB (4901, 4903, 4904, 4905, 4907, 4908; February/March 1998), GeoB (9501; April/May 2003), GeoB (2814, July/August 1994)
* R/V Endeavor cruises were attached to this dataset as "Deployments."
* Collection information for the GeoB samples previously collected from the Department of Geosciences at Bremen University can be found in table "Atlantic Sediment Cruise Information" in the Supplemental Files section of this dataset.

Data Processing Description

Data were analyzed using Microsoft Excel and R (version 4.1.1).

BCO-DMO Processing

* Sheet 1 of "Atlantic Sediment BC.xlsx" was imported into the BCO-DMO data system.

* Column names adjusted to conform to BCO-DMO naming conventions designed to support broad re-use by a variety of research tools and scripting languages. [Only numbers, letters, and underscores. Can not start with a number]

* Date format converted to ISO 8601 format.

Data Files

File
908373_v1_altantic_sediment_black_carbon.csv (Comma Separated Values (.csv), 16.28 KB) MD5:6d337d24412c4f4f7a6dfae6f6e31b88 Primary data table for 908373 version 1.

Supplemental Files

File

Atlantic Sediment Cruise Information
filename: altantic_sediment_cruise_information.csv

(Comma Separated Values (.csv), 1.45 KB)
MD5:7550cf1e6430ae47a3ce9ec960ef189f

Cruise information table.  This includes a description of R/V Endeavor cruises and GeoB core samples previously collected from the Department of Geosciences at Bremen University (obtained from sediment repository (PANGAEA, https://www.pangaea.de/) see MARUM GeoB Core Re­pos­it­ory https://www.marum.de/en/Infrastructure/MARUM-GeoB-Core-Repository.html.

Cruise_ID = cruise identifier

Cruise_name_AltID = Alternate cruise name (or  GeoB  core id)

Vessel_Name = Vessel name (or if sample was from the Pangaea sediment repository)

Start_Date = cruise start date

End_Date = cruise end date

Location_Sampling_area = geolocation name of the cruise

Chief_Scientist_name = Chief scientist name

Cruise DOI = the DOI for the cruise (if available).

Datasets = Which datasets in the BCO-DMO "Related Dataset" group included samples from the cruise.  See Related Datasets section.

Comments = The date and month of the collection

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1924191
NSF Division of Ocean Sciences	OCE-0851044

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
EN480	EN-480	2010-07-13	R/V Endeavor	Rainer Lohmann (Chief Scientist)	data info
EN481	EN-481	2010-07-25	R/V Endeavor	Rainer Lohmann (Chief Scientist)	data info

Instruments

Elemental Analyzer

Supplied Name: Elementar Vario MICRO cube

Supplied Description:

Elementar Vario MICRO cube elemental analyzer coupled to an Isoprime100 isotope ratio-mass spectrometer (IR-MS)

Instrument Type

Generic Name: Elemental Analyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/

Generic Description:

Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.

Elemental Analyzer

Supplied Name: Carlo Erba elemental analyzer

Supplied Description:

Carlo Erba elemental analyzer coupled to a GV Optima 588 system IR-MS

Instrument Type

Generic Name: Elemental Analyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/

Generic Description:

Isotope-ratio Mass Spectrometer

Supplied Name: Isoprime100

Supplied Description:

Elementar Vario MICRO cube elemental analyzer coupled to an Isoprime100 isotope ratio-mass spectrometer (IR-MS)

Instrument Type

Generic Name: Isotope-ratio Mass Spectrometer

Acronym: IR Mass Spec; IRMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/

Generic Description:

The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).

Isotope-ratio Mass Spectrometer

Supplied Name: GV Optima 588

Supplied Description:

Carlo Erba elemental analyzer coupled to a GV Optima 588 system IR-MS

Instrument Type

Generic Name: Isotope-ratio Mass Spectrometer

Acronym: IR Mass Spec; IRMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/

Generic Description:

The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Site	Numerical sediment core name	unitless	core_id
Depth_Interval	sediment depth interval	cenitmeters below seafloor (cmbsf)	depth_bsf
Date	Core date Format: %Y-%m-%d	unitless	date
Lat	Core sample location latitude	decimal degrees	lat
Lon	Core sample location longitude	decmial degrees	lon
Total_Organic_Carbon	Total Organic Carbon; % (total organic carbon/sediment)	percent (%)	TOC
Black_Carbon	Black Carbon measured by chemothermal oxidation. % (black carbon/sediment)	percent (%)	no_bcodmo_term
d13C_Total_Organic_Carbon	stable carbon isotope ratio of the total organic carbon sediment fraction (d13C)	per mil (0/00)	d13C
d13C_Black_Carbon	stable carbon isotope ratio of the black carbon sediment fraction (d13C)	per mil (0/00)	d13C