Dataset: Inorganic Sediment Chemistry - PC72

Name: Inorganic Sediment Chemistry data from R/V Thomas G. Thompson U.S. JGOFS cruise in the Equatorial Pacific (EqPac project)
Published: 2013-05-13
Keywords: oceans

Cite This Dataset

Spatial Extent: N:0.1137 E:-139.4015 S:0.1137 W:-139.4015

Project:

U.S. JGOFS Equatorial Pacific (EqPac)

Program:

U.S. Joint Global Ocean Flux Study (U.S. JGOFS)

Principal Investigator:

Margaret Leinen (Florida Atlantic University, FAU)

Richard W Murray (Boston University, BU)

BCO-DMO Data Manager:

Theresa McKee (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

13 May 2013

Version Date:

2013-05-13

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Inorganic Sediment Chemistry data from R/V Thomas G. Thompson U.S. JGOFS cruise in the Equatorial Pacific (EqPac project)

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Description

Accumulation of Fe, calcium carbonate (CaCO3), Ba, Al, P, Ti and ratios from Piston Core (PC) 72.

Relevant references:

Links between iron input and opal deposit in the Pleistocene equatorial Pacific Ocean.

Supplemental Information: Links between iron input and opal deposit in the Pleistocene equatorial Pacific Ocean.

Murray R. W., Knowlton C., Leinen M., Mix A. C., and Polsky C. H., 2000, Export production and carbonate dissolution in the central equatorial Pacific Ocean over the past 1 Ma. Paleoceanography, 15, 570-592.

Murray R. W., Leinen M., Murray D. W., Mix A. C, and Knowlton, C. W., 1995, Terrigenous Fe input and biogenic sedimentation in the glacial and interglacial Equatorial Pacific Ocean. Global Biogeochemical Cycles, 9, 667-684.

Data Files

File
InorgSedChem_PC72.csv (Comma Separated Values (.csv), 41.26 KB) MD5:29eaa7d43bd73f982d19fad1b0059d90 Primary data file for dataset ID 3940

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-9301097

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
TT013	EqPac Benthic Survey	1992-10-30	R/V Thomas G. Thompson	Margaret Leinen (Chief Scientist)	data info

Instruments

Piston Corer

Supplied Description:

Instrument Type

Generic Name: Piston Corer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/51/

Generic Description:

The piston corer is a type of bottom sediment sampling device. A long, heavy tube is plunged into the seafloor to extract samples of mud sediment. A piston corer uses a "free fall" of the coring rig to achieve a greater initial force on impact than gravity coring. A sliding piston inside the core barrel reduces inside wall friction with the sediment and helps to evacuate displaced water from the top of the corer. A piston corer is capable of extracting core samples up to 90 feet in length.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
event	event number from event log	dimensionless	event
sta	sta number from event log	dimensionless	no_bcodmo_term
lat	latitude, negative denotes South	decimal degrees	lat
lon	longitude, negative denotes West	decimal degrees	lon
depth_w	depth of water	meters	depth_w
core_type	core type	dimensionless	no_bcodmo_term
depth_core	depth in core, mid-point of interval sampled	centimeters	no_bcodmo_term
CaCO3	Calcium Carbonate	weight per cent	no_bcodmo_term
d18O	Oxygen Isotope		d18O
Opal	opal	weight in percent	opal
sed_rate_linear	linear sedimentation rate	centimeters/kiloyear	sed_rate_linear
TOC	Total Organic Carbon	weight in percent	TOC
Fe	Fe (Iron)	parts per million	Fe
Al	Al (Aluminum)	parts per million	Al
P	P (Phosphorus)	parts per million	P
Ti	Ti (Titanium)	parts per million	Ti
Ba	Ba (Barium)	parts per million	Ba
Ba_Ti_ratio	Barium to Titanium ratio	parts per million	Ba_Ti_ratio
Al_Ti_ratio	Aluminum Titanium ratio	parts per million	Al_Ti_ratio
P_Ti_ratio	Phorphorus to Tin ratio	parts per million	P_Ti_ratio
mass_acc_rate_d18O	delta 18O-based Mass Accumulation Rate = (Dry Bulk Density) x (delta 18O-based Linear Sedimentation Rate)	parts per million	mass_acc_rate_delta_18O
mass_acc_rate_230Th	230Th-based Mass Accumulation Rate	parts per million	mass_acc_rate_230Th
density_dry_bulk	Dry Bulk Density of sediment calculated from CaCO3 (weight %)	micrograms/centimeter^3	density_dry_bulk

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Database

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Dataset: Inorganic Sediment Chemistry - PC72