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Three‐dimensional model of modern channel bend deposits
Author(s) -
Cardenas M. Bayani,
Zlotnik Vitaly A.
Publication year - 2003
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/2002wr001383
Subject(s) - geology , ground penetrating radar , coring , outcrop , hydrogeology , kriging , aquifer , hydraulic conductivity , geostatistics , sedimentology , geomorphology , channel (broadcasting) , ooid , groundwater , isotropy , groundwater model , geophysics , geotechnical engineering , soil science , groundwater flow , radar , drilling , computer science , engineering , mathematics , structural basin , computer network , facies , telecommunications , quantum mechanics , machine learning , soil water , mechanical engineering , statistics , physics , spatial variability
We present a three‐dimensional model of heterogeneous modern channel bend deposits developed through purely structure‐imitating interpolation (kriging) of hydraulic properties. This model, augmented with ground‐penetrating radar data and directional variograms, agrees with detailed observations in similar modern environments and leads to a process‐based interpretation of the presented hydraulic conductivity structure. Integration of all available information permitted delineation and characterization of the modern streambed as a distinct hydrostratigraphic unit without coring or outcrop studies. Our results imply that the modern streambed is commonly oversimplified in available analytical and numerical models of groundwater‐surface water interactions where it is assumed to be homogeneous and isotropic and characterized by a constant width and thickness. This three‐dimensional approach that integrates concepts and principles developed in sedimentology, hydrogeology, geophysics, and geostatistics has potential implications on model development of stream‐aquifer systems.