Be isotopes in rivers/estuaries and their oceanic budgets

Transport and burial rates of10Be and231Pa in the Pacific Ocean during the Holocene period

“…Using an average l°Be flUX of 1.5 X 10 6 atoms/cm 2 yr-1 calculated from the above modeling, a mean l°Be concentration of 1800 atoms/g [42] and a mean depth of the Pacific of 4200 m [43], the calculated mean 1°Be residence time in the Pacific is ~ 500 yr, consistent with the recent estimate of Kusakabe et al [53]. (Fig.…”

Beryllium isotopes in the ocean.

“…With the limited data base at hand, it would be instruc tional to attempt a first-order assessment of the budgetary balance of 10Be and 9Be in the ocean. We are particularly interested in the evaluation of two aspects of the budget: (1) the contribution of atmospheric input of 9Be via eolian dust transport to the ocean, the significance of which seems to have been reflected in the 9Be profiles in the NW Atlantic; (2) the importance of oceanic Ku et al (1990), Edmond (1982), (1983), this study Ku et al (1990), Kusakabe et al (1987), this study Edmond (1983) Kusakabe et al (1991), Southon et al (1989) Measures andEdmond (1983), Kusakabe et al (1991) Garrels and Mackenzie (1971) Amin et al (1975, O'Brian (1979), Reyss et al (1981), Monaghan et al (1985/ 86) Prospero (1981, Uematsu (1989) Krauskopf ( Anderson et al (1990) and .…”

“…It turns out that if the dissolution were out of that range, the solu tions to the equations would give rise to negative values. The contribution of dust 10Be to the marine 10Be is so insignificant that the model is quite insensitive to the choice of the "Be dissolu tion percentage (Kusakabe et al, 1991). Thus, the conclusions we have drawn from the model appears to be relatively robust with respect to the input data chosen.…”

“…A two-box model including the open ocean and coastal ocean has been used for the evalua tion (Kusakabe et al, 1991), as schematically shown in Fig. 7.…”

Subduction dynamics at the middle America trench : new constraints from swath bathymetry, multichannel seismic data, and 10BE

“…Lithogenic input from continents, such as by aeolian dust or riverine pariculate matter, is the primar source of 9Be in marine sediments (e.g., Kusakabe et al, 1990Kusakabe et al, , 1991Brown et al, 1992;Wang et al, 1996). In subducting sediments and oceanic crust, white mica is thought to be the dominant mineral host of Be (Domanik et al, 1993;Bebout et al, 1993Bebout et al, , 1999.…”