Mathematics – Logic
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3523402a&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 23, CiteID L23402
Mathematics
Logic
3
Hydrology: Groundwater Hydrology, Hydrology: Hydroclimatology, Hydrology: Climate Impacts, Hydrology: Hydrological Cycles And Budgets (1218, 1655), Hydrology: Time Series Analysis (3270, 4277, 4475)
Scientific paper
Multi-year climate oscillations such as the El Niño-Southern Oscillation (ENSO) and Pacific Decadal Oscillation (PDO) affect precipitation and stream discharge rates in the western hemisphere. While inferences may be drawn between these hydroclimatological relationships and groundwater conditions, few studies explicitly link groundwater conditions to these cycles. Here we investigate relationships between winter ENSO, PDO, and lagging baseflow rates in the southeastern United States. We find strong correlation between winter ENSO and lagged baseflow in coastal North Carolina which, coupled with anomalies in mean baseflow, decrease with distance inland from the coast. Our results demonstrate that interannual and interdecadal climate oscillations in the Pacific Ocean have a strong effect on hydrological processes in eastern North America despite filtering by the groundwater flow process. These results have implications for water resource availability in regions where water management is complicated by population growth and climatic uncertainty.
Anderson William P.
Emanuel Ryan E.
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