Oceanic Particulate Inorganic Carbon as an Estimate of Calcification Measured during the JGOFS Equatorial Pacific Process Study (EQPAC)
Entry ID: JGOFS_EQPAC_PIC

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Summary
Abstract: The Equatorial Pacific Process Study (EQPAC) was conducted along 140 deg W
longitude during 1992.

Four cruises took place: February 3 - March 9, March 19 - April 15,
August 5 - September 18, and September 24 - October 21. A fifth benthic
cruise and sediment trap legs were added. During the first cruise
(TT007), 15 stations were occupied along 140 deg W longitude from
12 deg N latitude to 12 deg S latitude. During the second cruise
(TT008), data were collected at 8 stations along 140 deg W longitude
from 9 deg S latitude to 9 deg N latitude. During the third cruise
(TT011), data were collected at 15 stations along 140 deg W from 12 deg N
latitude to 12 deg S latitude. During the fourth cruise (TT012), data were
collected at 5 stations along 140 deg W longitude from 17 deg S
latitude to the equator.

During the third cruise (TT011), calcification (calcite
production) was measured at each site using carbon-14 techniques.
Particulate inorganic carbon (PIC) was used as an estimate of calcite.
Water was collected using the trace metal (TM) clean rosette,
inoculated with carbon-14 solution, incubated for 24 hours in situ,
split into two aliquots, and filtered. The replicate filters were
fumed in the presence of concentrated HCl to drive off activity due
to calcite. Radioactivity on the filters was measured in a liquid
scintillation counter. Calcification rates were calculated based on
the difference between unfumed filter counts and fumed filter counts.
In addition, primary production, chlorophyll, and phaeopigments were
measured.

The data is public domain and can be retrieved on-line at
"http://usjgofs.whoi.edu/jg/dir/jgofs/"

[The information in this summary was taken from the JGOFS
World Wide Web pages.]

Related URL
Link: GET DATA
Description: Access US JGOFS data


Link: VIEW PROJECT HOME PAGE
Description: US JGOFS Home Page


Geographic Coverage
 N: 12.0 S: -17.0  E: -140.0  W: -140.0

Temporal Coverage
Start Date: 1992-08-05
Stop Date: 1992-09-18


Location Keywords
OCEAN > PACIFIC OCEAN
GEOGRAPHIC REGION > EQUATORIAL


Science Keywords
OCEANS >OCEAN CHEMISTRY >CARBONATE    [Definition]
OCEANS >OCEAN CHEMISTRY >INORGANIC CARBON >PARTICULATE INORGANIC CARBON    [Definition]
OCEANS >OCEAN CHEMISTRY >PIGMENTS >PHAEOPIGMENTS    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >PLANKTON >ZOOPLANKTON    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >BENTHIC HABITAT    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >PELAGIC HABITAT    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >MARINE HABITAT    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >PRIMARY PRODUCTION    [Definition]


ISO Topic Category
BIOTA
GEOSCIENTIFIC INFORMATION
OCEANS


Platform
SHIPS    [Information]


Instrument
WATER BOTTLES
SCINTILLATION COUNTERS    [Information]


Project
IGBP >International Geosphere-Biosphere Programme    [Information]
JGOFS >Joint Global Ocean Flux Study, IGBP    [Information]
ESIP >Earth Science Information Partners Program    [Information]


Keywords
BOTTLES ROSETTE
CALCIFICATION
CALCITE
CALCIUM CARBONATE
CARBONATE
EQPAC
IDN_NODE GSFC/WHOI
JGOFS
PARTICULATE INORGANIC CARBON
PHOTOSYNTHESIS
PIC


Originating Center
WHOI


Data Center
United States Joint Global Ocean Flux Study    [Information]
Data Center URL: http://usjgofs.whoi.edu/
Dataset ID: eqpac/tt011/dist-pp
Dataset ID: eqpac/tt011/insitupp
Dataset ID: eqpac/tt011/pca
Dataset ID: eqpac/tt011/simu-pp
Dataset ID: eqpac/tt011/transct

Data Center Personnel
Name: CINDY CHANDLER
Contact Address:
WHOI
City: Woods Hole
Country: USA


Biological and Chemical Oceanography Data Management Office    [Information]
Data Center URL: http://www.bco-dmo.org

Data Center Personnel
Name: ROBERT C. GROMAN
Phone: 508-289-2409
Fax: 508-457-2169
Email: rgroman at whoi.edu
Contact Address:
Woods Hole Oceanographic Institution
Swift House MS#38
City: Woods Hole
Province or State: MA
Postal Code: 02543-1127
Country: USA



Distribution
Distribution_Media: On-line (World Wide Web)



Creation and Review Dates
Last DIF Revision Date: 2009-05-13

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