Matches in SemOpenAlex for { <https://semopenalex.org/work/W1977348757> ?p ?o ?g. }
- W1977348757 endingPage "82" @default.
- W1977348757 startingPage "66" @default.
- W1977348757 abstract "Summary A recently developed unified model for partially-penetrating slug tests in unconfined aquifers ( Malama et al., in press ) provides a semi-analytical solution for aquifer response at the wellbore in the presence of inertial effects and wellbore skin, and is able to model the full range of responses from overdamped/monotonic to underdamped/oscillatory. While the model provides a unifying framework for realistically analyzing slug tests in aquifers (with the ultimate goal of determining aquifer properties such as hydraulic conductivity K and specific storage S s ), it is currently unclear whether parameters of this model can be well-identified without significant prior information and, thus, what degree of information content can be expected from such slug tests. In this paper, we examine the information content of slug tests in realistic field scenarios with respect to estimating aquifer properties, through analysis of both numerical experiments and field datasets. First, through numerical experiments using Markov Chain Monte Carlo methods for gauging parameter uncertainty and identifiability, we find that: (1) as noted by previous researchers, estimation of aquifer storage parameters using slug test data is highly unreliable and subject to significant uncertainty; (2) joint estimation of aquifer and skin parameters contributes to significant uncertainty in both unless prior knowledge is available; and (3) similarly, without prior information joint estimation of both aquifer radial and vertical conductivity may be unreliable. These results have significant implications for the types of information that must be collected prior to slug test analysis in order to obtain reliable aquifer parameter estimates. For example, plausible estimates of aquifer anisotropy ratios and bounds on wellbore skin K should be obtained, if possible, a priori. Secondly, through analysis of field data – consisting of over 2500 records from partially-penetrating slug tests in a heterogeneous, highly conductive aquifer, we present some general findings that have applicability to slug testing. In particular, we find that aquifer hydraulic conductivity estimates obtained from larger slug heights tend to be lower on average (presumably due to non-linear wellbore losses) and tend to be less variable (presumably due to averaging over larger support volumes), supporting the notion that using the smallest slug heights possible to produce measurable water level changes is an important strategy when mapping aquifer heterogeneity. Finally, we present results specific to characterization of the aquifer at the Boise Hydrogeophysical Research Site. Specifically, we note that (1) K estimates obtained using a range of different slug heights give similar results, generally within ±20%; (2) correlations between estimated K profiles with depth at closely-spaced wells suggest that K values obtained from slug tests are representative of actual aquifer heterogeneity and not overly affected by near-well media disturbance (i.e., “skin”); (3) geostatistical analysis of K values obtained indicates reasonable correlation lengths for sediments of this type; and (4) overall, K values obtained do not appear to correlate well with porosity data from previous studies." @default.
- W1977348757 created "2016-06-24" @default.
- W1977348757 creator A5004507674 @default.
- W1977348757 creator A5043409581 @default.
- W1977348757 creator A5047749514 @default.
- W1977348757 creator A5084648298 @default.
- W1977348757 date "2011-06-01" @default.
- W1977348757 modified "2023-10-01" @default.
- W1977348757 title "Information content of slug tests for estimating hydraulic properties in realistic, high-conductivity aquifer scenarios" @default.
- W1977348757 cites W1510537998 @default.
- W1977348757 cites W1627222640 @default.
- W1977348757 cites W1677277008 @default.
- W1977348757 cites W1969749435 @default.
- W1977348757 cites W1977912440 @default.
- W1977348757 cites W1979206488 @default.
- W1977348757 cites W1981150080 @default.
- W1977348757 cites W1988181151 @default.
- W1977348757 cites W1990023111 @default.
- W1977348757 cites W1994277189 @default.
- W1977348757 cites W1995096114 @default.
- W1977348757 cites W1995469257 @default.
- W1977348757 cites W2005133393 @default.
- W1977348757 cites W2012239606 @default.
- W1977348757 cites W2024305505 @default.
- W1977348757 cites W2027697904 @default.
- W1977348757 cites W2038287664 @default.
- W1977348757 cites W2048925094 @default.
- W1977348757 cites W2060880556 @default.
- W1977348757 cites W2072258649 @default.
- W1977348757 cites W2080944378 @default.
- W1977348757 cites W2082047423 @default.
- W1977348757 cites W2096620043 @default.
- W1977348757 cites W2102695921 @default.
- W1977348757 cites W2127037336 @default.
- W1977348757 cites W2138309709 @default.
- W1977348757 cites W2148651930 @default.
- W1977348757 cites W2161054047 @default.
- W1977348757 cites W2170597243 @default.
- W1977348757 cites W4253696855 @default.
- W1977348757 doi "https://doi.org/10.1016/j.jhydrol.2011.03.044" @default.
- W1977348757 hasPublicationYear "2011" @default.
- W1977348757 type Work @default.
- W1977348757 sameAs 1977348757 @default.
- W1977348757 citedByCount "27" @default.
- W1977348757 countsByYear W19773487572012 @default.
- W1977348757 countsByYear W19773487572013 @default.
- W1977348757 countsByYear W19773487572014 @default.
- W1977348757 countsByYear W19773487572015 @default.
- W1977348757 countsByYear W19773487572016 @default.
- W1977348757 countsByYear W19773487572018 @default.
- W1977348757 countsByYear W19773487572019 @default.
- W1977348757 countsByYear W19773487572020 @default.
- W1977348757 countsByYear W19773487572021 @default.
- W1977348757 countsByYear W19773487572022 @default.
- W1977348757 countsByYear W19773487572023 @default.
- W1977348757 crossrefType "journal-article" @default.
- W1977348757 hasAuthorship W1977348757A5004507674 @default.
- W1977348757 hasAuthorship W1977348757A5043409581 @default.
- W1977348757 hasAuthorship W1977348757A5047749514 @default.
- W1977348757 hasAuthorship W1977348757A5084648298 @default.
- W1977348757 hasConcept C127313418 @default.
- W1977348757 hasConcept C151730666 @default.
- W1977348757 hasConcept C159390177 @default.
- W1977348757 hasConcept C159750122 @default.
- W1977348757 hasConcept C187320778 @default.
- W1977348757 hasConcept C24939127 @default.
- W1977348757 hasConcept C2781381752 @default.
- W1977348757 hasConcept C39432304 @default.
- W1977348757 hasConcept C47291792 @default.
- W1977348757 hasConcept C63184880 @default.
- W1977348757 hasConcept C75622301 @default.
- W1977348757 hasConcept C76177295 @default.
- W1977348757 hasConcept C76886044 @default.
- W1977348757 hasConcept C78762247 @default.
- W1977348757 hasConceptScore W1977348757C127313418 @default.
- W1977348757 hasConceptScore W1977348757C151730666 @default.
- W1977348757 hasConceptScore W1977348757C159390177 @default.
- W1977348757 hasConceptScore W1977348757C159750122 @default.
- W1977348757 hasConceptScore W1977348757C187320778 @default.
- W1977348757 hasConceptScore W1977348757C24939127 @default.
- W1977348757 hasConceptScore W1977348757C2781381752 @default.
- W1977348757 hasConceptScore W1977348757C39432304 @default.
- W1977348757 hasConceptScore W1977348757C47291792 @default.
- W1977348757 hasConceptScore W1977348757C63184880 @default.
- W1977348757 hasConceptScore W1977348757C75622301 @default.
- W1977348757 hasConceptScore W1977348757C76177295 @default.
- W1977348757 hasConceptScore W1977348757C76886044 @default.
- W1977348757 hasConceptScore W1977348757C78762247 @default.
- W1977348757 hasIssue "1-2" @default.
- W1977348757 hasLocation W19773487571 @default.
- W1977348757 hasOpenAccess W1977348757 @default.
- W1977348757 hasPrimaryLocation W19773487571 @default.
- W1977348757 hasRelatedWork W1984739586 @default.
- W1977348757 hasRelatedWork W1986987928 @default.
- W1977348757 hasRelatedWork W1992157090 @default.
- W1977348757 hasRelatedWork W2029527477 @default.
- W1977348757 hasRelatedWork W2103948858 @default.
- W1977348757 hasRelatedWork W2164647326 @default.