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@ARTICLE{Maxwell:820864,
author = {Maxwell, Reed M and Condon, Laura E and Kollet, Stefan and
Maher, Kate and Haggerty, Roy and Forrester, Mary Michael},
title = {{T}he imprint of climate and geology on the residence times
of groundwater},
journal = {Geophysical research letters},
volume = {43},
number = {2},
issn = {0094-8276},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {FZJ-2016-06128},
pages = {701 - 708},
year = {2016},
abstract = {Surface and subsurface flow dynamics govern residence time
or water age until discharge, which is a key metric of
storage and water availability for human use and ecosystem
function. Although observations in small catchments have
shown a fractal distribution of ages, residence times are
difficult to directly quantify or measure in large basins.
Here we use a simulation of major watersheds across North
America to compute distributions of residence times. This
simulation results in peak ages from 1.5 to 10.5 years, in
agreement with isotopic observations from bomb-derived
radioisotopes, and a wide range of residence times—from
0.1 to 10,000 years. This simulation suggests that peak
residence times are controlled by the mean hydraulic
conductivity, a function of the prevailing geology. The
shape of the residence time distribution is dependent on
aridity, which in turn determines water table depth and the
frequency of shorter flow paths. These model results
underscore the need for additional studies to characterize
water ages in larger systems.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000372056400027},
doi = {10.1002/2015GL066916},
url = {https://juser.fz-juelich.de/record/820864},
}