Ground and surface water interactions in karst terrains: Some observations from along the Cody Scarp. Jon Martin Liz Screaton, PJ Moore Acknowledgements: NSF, DEP, SRWMD O’Leno State Park, Ichetucknee State Park Sheryl Gordon, Randy Dean, Brooke Sprouse, Jennifer Martin.
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Liz Screaton, PJ Moore
Acknowledgements: NSF, DEP, SRWMD
O’Leno State Park, Ichetucknee State Park
Sheryl Gordon, Randy Dean, Brooke Sprouse, Jennifer Martin
Modified from White, 2002
Martin and Screaton, 2001
~21 cm of rain
Martin and Gordon, 1997
m3 gainedDischarge at sink and rise:evidence for conduit-matrix exchange
222Rn derived from decay of 238U
Alkaline earth element; easily fits in clay and carbonate mineral structures.
t½ = ~1600 yrs
Source of 222Rn to ground water.
t½ = 3.8 days
Loss from radioactive decay.
Noble gas; non-reactive in inorganic or organic reactions.
Loss from evasion to atmosphere.
Distance from sink (m)
N = 222Rn activity
N0 =initial 222Rn activity
l = decay constant
t = time