0022-1694/$ see front matter Published by Elsevier doi:10.1016/j.jhydrol.2010.04.036 * Corresponding author at: US Geological Survey, 1505 Ferguson Lane, Austin, TX 78754, United States. E-mail address: [email protected] (M. Musgrov A two and a half year study of two adjacent watersheds at the Honey Creek State Natural Area (HCSNA) in central Texas was undertaken to evaluate spatial and tempora...

A quasi three-dimensional (QUASI 3-D) model is presented for simulating the subsurface water flow and solute transport in the unsaturated and in the saturated zones of soil. The model is based on the assumptions of vertical flow in the unsaturated zone and essentially horizontal groundwater flow. The 1-D Richards equation for the unsaturated zone is coupled at the phreatic surface with the 2-D ...

the mikkes basin is located at the north center of morocco. it comprises three different zones which represent diversified geologies which shelter a phreatic and confined aquifer in the sais basin and a shallow aquifer in the tabular middle atlas. the springs in the sais phreatic aquifer have suffered a maximum depletion. the springs with a deep or mixed origin are known as low flow variation s...

To use and manage water resources carry out protection measures from the destructive effect of flow, reservoir hydrosystem construction has greatly developed. The article presents results field studies to determine unsteady filtration in Earth-fill dam core. In research process, static data literature review, study data, theoretical processing were used. Numerical was carried with methods mathe...

In this study, the 2D steady-state seepage analysis of dam body and its base is investigated using finite element method based on Galerkin’s approach. The foundation soil are considered as homogeneous isotropic anisotropic materials effects horizontal drainage length cutoff wall investigated. differential equation governing response water in obtained with help Darcy's law continuity equations. ...

We analyzed seismicity linked to the 2014 phreatic eruption of Mount Ontake, Japan, on 27 September 2014. We first relocated shallow volcano tectonic (VT) earthquakes and long-period (LP) events from August to September 2014. By applying a matched-filter technique to continuous waveforms using these relocated earthquakes, we detected numerous additional micro-earthquakes beneath the craters. Th...

The Pantanal of Nhecolândia, the world's largest and most diversified field of tropical lakes, comprises approximately 10,000 lakes, which cover an area of 24,000 km(2) and vary greatly in salinity, pH, alkalinity, colour, physiography and biological activity. The hyposaline lakes have variable pHs, low alkalinity, macrophytes and low phytoplankton densities. The saline lakes have pHs above 9 o...

BACKGROUND The Soufriere Hills, a stratovolcano on Montserrat, started erupting in July 1995, producing volcanic ash, both from dome collapse pyroclastic flows and phreatic explosions. The eruptions/ash resuspension result in high concentrations of suspended particulate matter in the atmosphere, which includes cristobalite, a mineral implicated in respiratory disorders. AIMS To conduct toxico...