Water level alterations on the southern rim of the Guarani Aquifer due to the rain regime
| Autor: | Cássio Stein Moura, Vanessa da Conceição Osório |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Hydrology
010506 paleontology geography QE1-996.5 geography.geographical_feature_category Plateau Water table Water storage Aquifer Geology Groundwater recharge 010502 geochemistry & geophysics gravimetry 01 natural sciences Guarani Aquifer System Water level Gravity Recovery and Climate Experiment General Earth and Planetary Sciences Gravimetry Bouguer anomaly 0105 earth and related environmental sciences |
| Zdroj: | Brazilian Journal of Geology, Volume: 51, Issue: 2, Article number: e20200079, Published: 14 MAY 2021 Brazilian Journal of Geology, Vol 51, Iss 2 (2021) Brazilian Journal of Geology v.51 n.2 2021 Brazilian Journal of Geology Sociedade Brasileira de Geologia (SBGEO) instacron:SBGEO |
| Popis: | This paper estimated the total water storage variation in the southern rim of the Guarani Aquifer System during a three-year time span, making use of data provided by the Gravity Recovery and Climate Experiment. Monthly data were used to estimate the Bouguer anomaly in Southern Brazil. A direct modeling, using the Bouguer plateau, was applied to quantitatively estimate the water volume variation of a specific thickness in the studied region. Meteorological almanac data were compared to the gravitational alterations. We found a direct proportionality between the monthly rain average and the water table level. A simple model was found to forecast water accumulation as a function of rainfall regime, which is validated by a Pearson index of 0.82 that indicates a strong correlation between pluviometric and gravimetric data. In order to raise the stored water level near the recharge area by 1 mm, approximately 3 mm of rainfall is needed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|