Essays about: "Hydraulic gradients"

Showing result 1 - 5 of 8 essays containing the words Hydraulic gradients.

  1. 1. Design and Optimisation of an Aquifer Storage and Recovery System - Options for long term storage under natural hydraulic gradients

    University essay from Lunds universitet/Teknisk geologi

    Author : Simon Kreipl; [2021]
    Keywords : Aquifer storage and recovery; well-field design; groundwater modelling; numerical modelling; FEFLOW; Technology and Engineering;

    Abstract : Aquifer storage and recovery (ASR) is a concept where water is stored in an aquifer during times when it is available, thus creating artificial groundwater, which can later be recovered by pumping when it is needed (Pyne, 1995). One ASR cycle consists of a injection, a standby and a recovery phase. READ MORE

  3. 2. Numerical and experimental analysis of fluid flow in fracture replicas with variable aperture

    University essay from Stockholms universitet/Institutionen för naturgeografi

    Author : Brandon Stock; [2020]
    Keywords : ;

    Abstract : Flow in fractured rocks has been intensively studied in the last decades, in part due to plans in manycountries to site repositories for high level nuclear waster in deep geologic formations. All investigated crystalline rocks have been found to be fractured and the majority of water flows through these fractures andfracture zones. READ MORE

  4. 3. Spatial and Temporal Variations in a Perennial Firn Aquifer on Lomonosovfonna, Svalbard

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Monika Hawrylak; Emma Nilsson; [2019]
    Keywords : perennial firn aquifer; ground penetrating radar; Svalbard; Lomonosovfonna; flerårig firnakvifer; georadar; Svalbard; Lomonosovfonna;

    Abstract : A firn aquifer is a type of englacial water storage that forms when surface meltwater fills up the pore space in porous firn. If the retention time exceeds one year the feature is regarded as perennial. The melt and accumulation rates as well as the available pore space determine the formation and extent of the firn aquifer. READ MORE

  5. 4. Transport and retention of heavy metals in contaminated soil and groundwater : A case study from Pukeberg glassworks in Småland, Sweden

    University essay from Stockholms universitet/Institutionen för naturgeografi

    Author : Gitte Laallam; [2017]
    Keywords : Hydrology; hydrogeology; contaminated areas; heavy metals; hydrologi; hydrogeologi; förorenade områden; metaller;

    Abstract : As much as 80 000 sites, including landfills from glass production industries, are estimated to be contaminated in Sweden. One of these landfills is located near the glassworks factory of Pukeberg, in the municipality of Nybro, Southeast Sweden. READ MORE

  6. 5. Laboratory investigation of suffusion on dam core glacial till

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Daniel Yadetie Tuffa; [2017]
    Keywords : Internal erosion; Suffusion; Filter; Core; Glacial till; Embankment dam; Hydraulic gradients;

    Abstract : The objective of this study is to provide a better understanding of suffusion characteristics of glacial soils and to present a simple yet reliable assessment procedure for determination of suffusion in the laboratory.Internal erosion by suffusion occurs in the core of an embankment dam when the ability of the soil to resist seepage forces is exceeded and voids are large enough to allow the transport of fine particles through the pores. READ MORE