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Title: Radium 228 as a tracer of basin wide processes in the Abyssal Ocean

Abstract

A simple model of isopycnal mixing in a circular basin is developed in order to examine the utility of the 5.75-year half-life tracer radium 228 for studying basin wide processes in the deep ocean. The model shows that it is possible to resolve diffusivities of < or approx. =8 x 10/sup 7/ cm/sup 2/ s/sup -1/ in a basin of approx.3000-km diameter with profiles measured near the center and edge of the basin. A least squares fit of the model to four abyssal profiles measured during GEOSECS in the North American Basin gives an isopycnal diffusivity of 6 x 10/sup 7/ cm/sup 2/ s/sup -1/.

Authors:
; ;
Publication Date:
Research Org.:
Geophysical Fluid Dynamics Program, Princeton University, Princeton, New Jersey 08540
OSTI Identifier:
6792587
Resource Type:
Journal Article
Journal Name:
J. Geophys. Res.; (United States)
Additional Journal Information:
Journal Volume: 87:C12
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES; RADIUM 228; RADIOECOLOGICAL CONCENTRATION; SEAS; CONTINUITY EQUATIONS; DIFFUSION; MIXING; QUANTITY RATIO; TRACER TECHNIQUES; ALKALINE EARTH ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DIFFERENTIAL EQUATIONS; ECOLOGICAL CONCENTRATION; EQUATIONS; EVEN-EVEN NUCLEI; HEAVY NUCLEI; ISOTOPE APPLICATIONS; ISOTOPES; NUCLEI; PARTIAL DIFFERENTIAL EQUATIONS; RADIOISOTOPES; RADIUM ISOTOPES; SURFACE WATERS; YEARS LIVING RADIOISOTOPES; 580500* - Oceanography- (1980-1989); 520300 - Environment, Aquatic- Radioactive Materials Monitoring & Transport- (1989)

Citation Formats

Sarmiento, J L, Rooth, C G.H., and Broecker, W S. Radium 228 as a tracer of basin wide processes in the Abyssal Ocean. United States: N. p., 1982. Web. doi:10.1029/JC087iC12p09694.
Sarmiento, J L, Rooth, C G.H., & Broecker, W S. Radium 228 as a tracer of basin wide processes in the Abyssal Ocean. United States. doi:10.1029/JC087iC12p09694.
Sarmiento, J L, Rooth, C G.H., and Broecker, W S. Sat . "Radium 228 as a tracer of basin wide processes in the Abyssal Ocean". United States. doi:10.1029/JC087iC12p09694.
@article{osti_6792587,
title = {Radium 228 as a tracer of basin wide processes in the Abyssal Ocean},
author = {Sarmiento, J L and Rooth, C G.H. and Broecker, W S},
abstractNote = {A simple model of isopycnal mixing in a circular basin is developed in order to examine the utility of the 5.75-year half-life tracer radium 228 for studying basin wide processes in the deep ocean. The model shows that it is possible to resolve diffusivities of < or approx. =8 x 10/sup 7/ cm/sup 2/ s/sup -1/ in a basin of approx.3000-km diameter with profiles measured near the center and edge of the basin. A least squares fit of the model to four abyssal profiles measured during GEOSECS in the North American Basin gives an isopycnal diffusivity of 6 x 10/sup 7/ cm/sup 2/ s/sup -1/.},
doi = {10.1029/JC087iC12p09694},
journal = {J. Geophys. Res.; (United States)},
number = ,
volume = 87:C12,
place = {United States},
year = {1982},
month = {11}
}