Thorium-234 Activity in Particulate and Dissolved Phases Measured during the JGOFS North Atlantic Bloom Experiment (NABE)Entry ID: JGOFS_NABE_TH234ACTIVITY
Abstract: The Joint Global Ocean Flux Study (JGOFS) seeks to understand
the processes that control the transfer of carbon and other
biologically active elements in the ocean. In addition, JGOFS
hopes to improve global-scale predictions of the ocean's response to
human-induced climate change.
The North Atlantic Bloom Experiment (NABE) ... was a multidisciplinary,
multinational pilot study of JGOFS, studying the spring phytoplankton
bloom in the North Atlantic and its associated biogeochemical
processes. It took place from April until July, 1989, on two cruises
of the RV Atlantis II and one cruise of the RV Endeavor. The stations
in the North Atlantic were located from 18N to 72N and from 8W to 47W.
At several stations, pumps were used to collect water samples from
various depths. The water samples were analyzed for activity of
Thorium-234 in both particulate and dissolved phases. Analysis was
performed by gamma counting. Values and errors are given in
disintegrations per minute per liter (Dpm/l).
The data is public domain and can be retrieved on-line at
[This summary was derived from Oceanus vol. 35 and from the JGOFS WWW
pages at WHOI.]
Start Date: 1989-04-25Stop Date: 1989-07-07
Distribution Media: Online (WWW)
Email: kbuesseler at whoi.edu
Woods Hole Oceanographic Institution Clark 447
City: Woods Hole
Province or State: MA
Postal Code: 02543
Buesseler, K.O., Bacon M.P., Cochran, J.K. and Livingston, H.D.
1990. Shipboard measurement of Th-234 during the JGOFS Spring Bloom
Experiment. Eos vol. 71(2), p. 139.
Ducklow, H.W., and Harris, R.P. 1993. Introduction to the JGOFS North
Atlantic Bloom Experiment. Deep Sea Research II, Vol. 40, No. 1/2,
Livingston, H.D. and Bowles, M.C. 1992. U.S. Joint Global Ocean Flux
Study Program. Oceanus, Vol. 35, No. 1, p. 57-59.
Livingston, H.D. and Cochran, J.K. 1987. Determination of transuranic
and thorium isotopes in ocean water in solution and in filterable
particles. J. Radioanal. Nucl. Chem., vol. 115(2), p. 299-308.
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Last DIF Revision Date: 2009-05-13