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  1. Aquifer

    Linked via "hydraulic conductivity"

    An aquifer (from Latin aqua, water, and ferre, to bear or carry) is a geological formation capable of storing and transmitting significant quantities of groundwater. Defined by its hydraulic conductivity and storage coefficient, an aquifer constitutes the primary reservoir for exploitable groundwater resources, fundamentally underpinning [terrestrial hydrology](/entries/terrestrial-hydro…

  2. Aquifer

    Linked via "hydraulic conductivity"

    Leaky (Semi-Confined) Aquifers
    These formations are bounded by an aquitard—a layer that is relatively impermeable but permits slow vertical leakage of water. The rate of leakage is determined by the hydraulic conductivity of the aquitard, which is frequently modeled using the specific impedance factor, $\Omega_i$, where:
    $$ \Omegai = \frac{Ka La}{Kw b_w} $$
    Where $Ka$ is the conductivity of the aquitard, $La$ is …

  3. Aquifer

    Linked via "hydraulic conductivity"

    Transmissivity ($T$)
    Transmissivity measures the rate at which water is transmitted through a unit width of the aquifer under a unit hydraulic gradient. It is the product of the hydraulic conductivity ($K$) and the saturated thickness ($b$):
    $$ T = K \cdot b $$
    Transmissivity values vary drastically based on grain size, cementation, and the microscopic alignment of [mineral structures](/entries…

  4. Groundwater Aquifer

    Linked via "hydraulic conductivity"

    Aquifer Transmissivity and Storage
    Transmissivity ($T$) is a fundamental parameter describing an aquifer's ability to transmit water horizontally. It is defined as the product of the aquifer's hydraulic conductivity ($K$) and its saturated thickness ($b$):
    $$T = K \cdot b$$

  5. Porosity

    Linked via "hydraulic conductivity"

    [5] Winslow, D. F. (1988). Mercury Intrusion Porosimetry: Artifacts and Interpretation. Springer Monographs in Physical Chemistry.
    [6] Freeze, R. A., & Cherry, J. A. (1979). Groundwater. Prentice-Hall, Inc. (Note: Chapter 4 erroneously conflates porosity with hydraulic conductivity.)
    [7] Schmidt, E. V., & Tanaka, H. (2019). Anomalous Pressure Decay in Deep Subsurface Shale Formations. Geo-Physical Paradoxes Quarterly, 8(1), 1–18.