Distribution of cosmogenic /sup 7/Be in salt marsh sediments

Journal Article · Tue Apr 01 04:00:00 EST 1986 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL013i004p00322· OSTI ID:5744445

Casey, W H; Larsen, I L; Olsen, C R

Two related factors affect the vertical distribution and inventory of /sup 7/Be (53-day half life) in salt marsh sediments: (1) the movement of pore water, and (II) the vegetation. Infiltration of rainwater into unsaturated sediment distributes /sup 7/Be over several centimeters depth without disturbing the sediment fabric. The sediment inventory of /sup 7/Be expected from its atmospheric flux could only be accounted for in vegetated areas where foliage traps /sup 7/Be from rainfall and surface flow. These factors lead to hetero-geneous vertical and lateral distributions of /sup 7/Be throughout the marsh, and may also affect the sediment distribution of the other trace substances, such as /sup 210/Pb, /sup 137/Cs, and heavy metals.

• Research Organization: Department of Geosciences, The Pennsylvania State University
• OSTI ID: 5744445
• Journal Information: Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 13:4; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

500300* -- Environment
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520302 -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- Aquatic Ecosystems & Food Chains-- (-1987)
54 ENVIRONMENTAL SCIENCES
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
AQUATIC ECOSYSTEMS
BERYLLIUM 7
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM 137
CESIUM ISOTOPES
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
ECOLOGICAL CONCENTRATION
ECOLOGY
ECOSYSTEMS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
GEOLOGIC DEPOSITS
HEAVY NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LEAD 210
LEAD ISOTOPES
LIGHT NUCLEI
MARSHES
METALS
NUCLEI
ODD-EVEN NUCLEI
PLANTS
RADIOECOLOGICAL CONCENTRATION
RADIOECOLOGY
RADIOISOTOPES
SALT DEPOSITS
SEDIMENTS
SPATIAL DISTRIBUTION
TRACER TECHNIQUES
WETLANDS
YEARS LIVING RADIOISOTOPES