A basic problem in marine biogeochemistry is understanding material and elemental
distributions and fluxes in the oceans, and a key part of this problem is understanding the …

Over the past few decades, the radioisotope pair of 238U/234Th has been widely and
increasingly used to describe particle dynamics and particle export fluxes in a variety of …

We present new empirical and mechanistic models for predicting the export of organic
carbon out of the surface ocean by sinking particles. To calibrate these models, we have …

Phytoplankton have played key roles in sha** Earth's biogeochemistry and contemporary
human economy, yet because the human experience is so closely tied to higher plants as …

Abstract Knowledge of concentrations and elemental ratios of suspended particles are
important for understanding many biogeochemical processes in the ocean. These include …

Thorium-234 is increasingly used as a tracer of ocean particle flux, primarily as a means to
estimate particulate organic carbon export from the surface ocean. This requires …

The concentration and the major phase composition (particulate organic matter, CaCO 3,
opal, lithogenic matter, and iron and manganese oxyhydroxides) of marine particles is …

In this paper, we present, describe, and model the first size-fractionated (0.8–51 µm;> 51
µm) water-column particulate trace metal results from the US GEOTRACES North Atlantic …

Abstract The IUPAC (International Union of Pure and Applied Chemistry) Periodic Table of
the Elements and Isotopes (IPTEI) was created to familiarize students, teachers, and non …

The uranium and thorium decay series have numerous radionuclides with half-lives ranging
from fractions of a second to a few years. The former include many of the isotopes of radon …