Dataset: Atlantic Sediment Petrography
Deployment: EN480

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/908380

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)

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)

Version:

Deployment Synonyms:

EN-480

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Description

Methods & Sampling

Dataset acquisition description

Sediment samples were collected via a 4-barrel multi-corer (R/V Endeavor, segmented into 1-2 cm sections, dried in a drying oven (35°C) and homogenized via mortar and pestle.

Instruments
Polished sediments were observed under a Leitz DMRX-MPVSP microscope photometer using a magnification up to 500X with reflected white light, uѵ fluorescence, plane-polarized light, and cross-polarized light.

Location:
Amazon Delta (approximately: 4 N, 47 W; 2400-3500m); Sierra Leone Rise (approximately: 7 N, 20 W; 2800-3800m).

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Funding

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

Instruments

Microscope - Optical

Supplied Name:

Supplied Description:

Polished sediments were observed under a Leitz DMRX-MPVSP microscope photometer using a magnification up to 500X with reflected white light, uѵ fluorescence, plane-polarized light, and cross-polarized light.

Instrument Type

Generic Name: Microscope - Optical

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB05/

Generic Description:

Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of visible light. Includes conventional and inverted instruments. Also called a "light microscope".

Photometer

Supplied Name: Leitz DMRX-MPVSP microscope photometer

Supplied Description:

Instrument Type

Generic Name: Photometer

Generic Description:

An instrument that measures the light intensity emitted from a sample. [Definition Source: NCI]
Photometers are used to measure iIlluminance, irradiance, light absorption, scattering of light, reflection of light, fluorescence, phosphorescence, and luminescence.
[May include luminometers]

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Location	Location name	unitless	site
Site	Numerical sediment core name (includes cruise identifier)	unitless	core_id
Depth_Interval	sediment depth interval	cenitmeters below seafloor (cmbsf)	depth_bsf
Date	Core date in ISO 8601 format	unitless	date
Lat	Core sample location latitude	decimal degrees	lat
Lon	Core sample location longitude	decmial degrees	lon
Maceral_Group	Name of Maceral Group assessed	unitless	sample_descrip
Maceral_subgroup	Name of Maceral Subgroup assessed	unitless	sample_descrip
Volume_Percent	Volume of Maceral Subgroup detected. Percentage of Maceral Group detected per volume of sediment analyzed; trace indicates detected at a volume too low to quantify	percent (%)	no_bcodmo_term

Database

Contribute Data

Dataset: Atlantic Sediment Petrography
Deployment: EN480

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Atlantic Sediment PetrographyDeployment: EN480

Dataset acquisition description

Dataset Processing Description

Dataset: Atlantic Sediment Petrography
Deployment: EN480