Prior to glaciations, an integrated karstic aquifer could develop with flow controlled by conduits; however, this original, converging flow system became non-functional when the Quaternary sediments drastically modified the boundary hydrologic conditions and the head distribution.
"Well, now we can show these hydrologic systems are modifying the fundamental stratigraphy of the ice sheet".
Application of HL-RDHM to Hanalei watershed required (i) modifying the Hydrologic Rainfall Analysis Project HRAPP) coordinate system; (ii) generating precipitation grids from rain gauge data, and (iii) generating parameters for Sacramento Soil Moisture Accounting Model (SAC-SMA) and routing parameter grids for the modified HRAP coordinate system.
The SWAT model was modified to simulate the hydrologic and chemical response of karstic systems and assess the impacts of land use management and climate change of an intensively managed Mediterranean watershed in Crete, Greece.
The findings of such studies will no doubt modify the empirical relationship between modeled local hydrologic conditions and epidemic SLEV transmission (equation 2).
Human activities also alter disturbance regimes by increasing landslide rates, disrupting exchange of nutrients and wood in the floodplain, and modifying hydrologic regimes (Ward and Stanford 1995; Collins et al. 2002; Poff et al. 2007).
As dams, diversions, and increased groundwater pumping modified hydrologic regimes throughout the western United States, surface flow diminished or disappeared altogether at some locations, and associated riparian and aquatic systems declined [6] [8].
Particularly, two modified hydrologic connectivity indices, time-varying connectivity function and connectivity length, were proposed to characterize the properties and dynamic changes in hydrologic connectivity.
We used the Basin Characterization Model (BCM) to model the hydrologic cycle for the California hydrologic region [Figure 1; modified from Hickman (1993)].
(For a detailed discussion of the hydrologic cycle see hydrosphere: The hydrologic cycle).
