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Imprint of long‐term solar signal in groundwater recharge fluctuation rates from Northwest China
Author(s) -
Tiwari R. K.,
Rajesh Rekapalli
Publication year - 2014
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2014gl060204
Subject(s) - groundwater recharge , environmental science , groundwater , hydrography , climate oscillation , climate change , geology , climatology , global warming , effects of global warming , aquifer , oceanography , geotechnical engineering
Multiple spectral and statistical analyses of a 700 yearlong temporal record of groundwater recharge from the dry lands, Badain Jaran Desert (Inner Mongolia) of Northwest China reveal a stationary harmonic cycle at ~200 ± 20 year. Interestingly, the underlying periodicity in groundwater recharge fluctuations is similar to those of solar‐induced climate cycle “Suess wiggles” and appears to be coherent with phases of the climate fluctuations and solar cycles. Matching periodicity of groundwater recharge rates and solar and climate cycles renders a strong impression that solar‐induced climate signals may act as a critical amplifier for driving the underlying hydrographic cycle through the common coupling of long‐term Sun‐climate groundwater linkages.