Douglas E. Hammond
Christopher Fuller
1983
<p><span>The deposition rate of atmospheric Pb-210 has been measured during a one year period using plastic funnels as collectors. Observed rates were 0.15 dpm cm</span><sup><span>−2</span></sup><span> yr</span><sup><span>−1</span></sup><span><sup> </sup>at a site in Palo Alto, California and 0.21 dpm cm</span><sup><span>−2</span></sup><span> yr</span><sup><span>−1</span></sup><span> at a site in Los Angeles. The Palo Alto value agrees well with a long-term average of 0.14 dpm cm</span><sup><span>−2</span></sup><span> yr</span><sup><span>−1</span></sup><span>, obtained from a nearby salt marsh core. These rates are only one-third of those previously estimated using global models for Pb-210 fallout and indicate the need to consider both longitude and precipitation as factors controlling fallout rates. More than 75% of the Pb-210 fallout occurs as wet deposition at the Los Angles site.</span></p>
application/pdf
10.1029/GL010i012p01164
en
AGU Publications
The fallout rate of PB-210 on the western coast of the United States
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