By Robert G. Maliva
This ebook offers an outline of recommendations which are on hand to represent sedimentary aquifers. Groundwater movement and solute delivery are strongly laid low with aquifer heterogeneity. more suitable aquifer characterization can enable for a greater conceptual figuring out of aquifer structures, which can result in extra exact groundwater types and profitable water administration strategies, equivalent to contaminant remediation and controlled aquifer recharge platforms. This e-book has an utilized point of view in that it considers the practicality of innovations for genuine groundwater administration and improvement tasks by way of bills, technical assets and services required, and research time. A dialogue of the geological factors, varieties, and scales of aquifer heterogeneity is first supplied. Aquifer characterization equipment are then mentioned, through chapters on information upscaling, groundwater modelling, and geostatistics. This publication is a needs to for each practitioner, graduate pupil, or researcher facing aquifer characterization .
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Additional info for Aquifer Characterization Techniques: Schlumberger Methods in Water Resources Evaluation Series No. 4
Karstic limestones (Fig. 4) are an extreme example of a dual-porosity system in which flow Fig. 4 Karstic limestone on Curacao. Secondary porosity consists of isolated vugs and larger continuous conduits and caverns. , meander belt) Total formational or regional scale; scale of depositional systems and stratigraphic sequences Thin section petrography Conventional core plug, minipermeameter Borehole geophysical logs, drill stem/packer tests, slug tests Aquifer pumping tests Macroscopic Megascopic Gigascopic Multiple aquifer pumping tests, regional model calibration may be dominated by caverns.
Although a number of workers have identiﬁed limitations of facies analysis, the message is not that facies analysis has no value or is not worth the effort. The advised caution is more to avoid overinterpretation of data. Despite its limitations, facies modeling has been demonstrated to be an invaluable tool for the analysis of sedimentary deposits and ultimately aquifer characterization. 1 Sequence Stratigraphy Introduction Facies migrate over time due to global (eustatic) sea level change, variations in sediment supply, and subsidence.
1988). , undrilled areas). What follows is a brief introduction into basic sequence stratigraphy concepts. Depositional sequences are chronostratigraphically signiﬁcant because they were deposited during an interval of geological time bounded by the ages of the sequence boundaries (Mitchum et al. 1977). Unconformities are surfaces of erosion or nondeposition that separate younger strata from older rocks and represent a signiﬁcant hiatus. A hiatus is the total interval of geological time that is not represented by strata at a speciﬁc position along a stratigraphic surface (Mitchum et al.