@Article{HodnettVenMarOyaTom:1997:FlWaTa,
               author = "Hodnett, M. G. and Vendrame, I. and Marques Filho, A. de O. and 
                         Oyama, M. D. and Tomasella, Javier",
          affiliation = "{CPTEC-INPE-Cachoeira Paulista-12630-000-SP-Brasil}",
                title = "Soil water storage and groundwater behaviour in a catenary 
                         sequence beneath forest in central Amazonia. II. Floodplain water 
                         table behaviour and implications for streamflow generation",
              journal = "Hydrology and Earth System Sciences",
                 year = "1997",
               volume = "1",
               number = "2",
                pages = "279--290",
                month = "may/jun",
             keywords = "soil storage, caternary sequence, water table.",
             abstract = "Abstract Valley floor groundwater level data collected during the 
                         ABRACOS project (Gash et al. 1996), and published streamflow data 
                         from small forested catchments in geomorphologically similar areas 
                         nearby have been analysed to improve the understanding of the 
                         processes of streamflow generation. Early in the wet season, the 
                         floodplain water table is typically at 0.8 m depth, or less, and 
                         receives only local, vertical recharge. Large storms may create a 
                         groundwater ridge beneath the floodplain, temporarily creating a 
                         gradient in the direction of the hilislope. Later in the wet 
                         season, floodpiain water levels are controlled primarily by the 
                         discharge of groundwater which maintains the dry season 
                         streamflow. The groundwater is recharged by deep drainage from 
                         beneath the plateau and slope areas once the dry season soil water 
                         deficit has been overcome. In the late wet season, the water level 
                         is almost at the floodplain surface and may create seeps on the 
                         lower slopes in very wet years. For the period 1966-1989, the 
                         recharge was estimated to range from 290 mm to 1601 mm with a mean 
                         of 1087 mm. Published data show that baseflow is 91% of annual 
                         runoff. Stormflow is generated on the floodplain, and water table 
                         recessions after rainfall events show that the runoff response 
                         depends on the depth to the water table. These results are from 
                         areas with deeply weathered and permeable soils; in areas of 
                         Amazonia with shallower soils, the predominant flow generation 
                         processes will differ (Elsenbeer and Lack, 1996).",
           copyholder = "SID/SCD",
                 issn = "1027-5606",
             language = "en",
           targetfile = "Hodnett_Soil water_II_Floodp.pdf",
        urlaccessdate = "23 maio 2024"
}