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Predicting ground-water response to precipitation
llA 851087 Measures of strong ground motion derived from a stochastic source model Faccioli, E Soil Dynam Earthq Engng V2, N3, July 1983, P135-149
Frost action, permafrost and frozen ground See: 851349
Hydrogeology 851088 Rapid numerical method for horizontal fluid flow in unsaturated soils Kirby, J M J Hydrol V72, N3-4, 15 June 1984, P391-400
Groundwater 851089 Groundwater balance in the wet zone of the USSR Zaltsberg, E Can Geotech J 1/20, N4, Nov 1983, P563-569 Investigations of the infiltration to and the evaporation from the groundwater table in the wet zone of the USSR have been carried out. Relationships between infiltration, evaporation, and depth to water table were obtained. It was found that the average means of these values decrease as the depth to water table increases in peat, fine sand, sandy loam, till and varved loam. These relationships can be used to evaluate groundwater balance in other basins. 851090 Flow pattern of a karst aquifer in the Molai area, Greece Ghikas, I C: Kruseman, G P; Leontiadis, I L; Wozab, D H Ground Water 1/21, N4, July-Aug 1983, P445-455 After analysis of the geological, hydrological, isotope and pumping test data of the karst aquifer in Mesozoic Tripolitza carbonates, it was concluded that the carbonates contained two flow systems. The unusual characteristics of the karst can be explained by the continuous tectonic activity which has prevented the completion of various stages of karst development. 851091 Effects of aquifer interconnection resulting from underground coal gasification Stone, R; Raber, E: Winslow, A M Ground Water V21, N5, Sept-Oct 1983, P606-618 An investigation was conducted to evaluate the effects of aquifer interconnection caused by the collapse of cavities formed in coal seams by UCG. The main objective was to assess the changes in groundwater flow patterns near the 2 experiment sites. Hydraulic head measurements in the 3 affected aquifers were used to calibrate a steady state groundwater flow model of the interconnection zone at each site. The effects of aquifer interconnection were found to be less dramatic than expected. 851092 Constant discharge device for aquifer tests on large-diameter wells Athavale, R N: Singh, V S; Subrahmanyam, K Ground Water V21. N6, Nov-Dec 1983, P752-755
The discharge in pumping tests conducted in large diameter wells declines wih the fall in water level, violating the basic requirement in pumping tests that the discharge should remain constant. A simple device to keep the discharge constant has therefore been developed. 851093 Sampling of brine in cores of Precambrian granite from Northern lllinois Couture, R A: Seitz, M G; Steindler, M J J Geophys Res V88, NB9, 10 Sept 1983. P7331-7334 The composition of groundwater in deep-seated rocks is of considerable interest, both geochemically and in connection with the disposal of radioactive waste. A simple technique is presented for the elution of pore fluid from cores of igneous rocks, and the brine eluted from a core of Precambrian granite from N. Illinois, USA, is described, with the aim of finding the composition of the pore fluid and determining its origin. 851094 Predicting ground-water response to precipitation Sangrey, D A; Harrop-Williams, K O; Klaiber, J A J Geotech Engng Div ASCE VllO, NGT7, July 1984, P957975 High ground-water levels are a principal cause of slope instability. A method has been developed for predicting the fluctuation of ground-water levels as a function of precipitation. The approximate method uses measured characteristics of the site or region and a short period ofcalibration from a well record. The linkage of precipitation to ground-water fluctuation can be used in either deterministic or probabilistic methods. The new method has been tested by application in several different geological and climatological areas. Based on these field studies, the sensitivity of the methodology to calibration period, aquifer response time, evapotranspiration and other characteristics has been evaluated. The overall conclusion of the work has been a demonstration that the fluctuation of ground-water levels, including extreme values, can be predicted with sufficient accuracy for many design and analysis problems. 851095 Cokriging of aquifer transmissivities from field measurements of transmissivity and specific capacity Aboufirassi, M; Marino, M A J lnt Assoc Math Geol V16, N1, Jan 1984, P19-35 A new application of the cokriging technique for constructing a map of the logarithm of transmissivity for a groundwater basin from field measurements of transmissivity and specific capacity is presented. The technique is illustrated using data from Yolo Basin, California. Based on geostatistical theory, cokriging can be used to improve the accuracy of estimation of a variable not sufficiently sampled by considering its spatial correlation with other variables that are better sampled. 851096 Geostatistically based approach to the identification of aquifer transmissivities in Yolo Basin, California Aboufirassi, M: Marino, M A J lnt Assoc Math Geol 1/16, N2, Feb 1984, P125-137 A geostatistically based approach is developed for the identification of aquifer transmissivities in Yolo Basin, California. The approach combines weighted least-squares with universal kriging and cokriging techniques in an overall scheme that: (1) considers a priori known information on transmissivity and specific capacity, (2) considers uncertainties in water-level and transmissivity data, and (3) estimates the reliability of the parameter estimates. Minimization of the least-squares function leads to a transmissivity map that shows a good agreement with
Frost action, permafrost and frozen ground See: 851349
Hydrogeology 851088 Rapid numerical method for horizontal fluid flow in unsaturated soils Kirby, J M J Hydrol V72, N3-4, 15 June 1984, P391-400
Groundwater 851089 Groundwater balance in the wet zone of the USSR Zaltsberg, E Can Geotech J 1/20, N4, Nov 1983, P563-569 Investigations of the infiltration to and the evaporation from the groundwater table in the wet zone of the USSR have been carried out. Relationships between infiltration, evaporation, and depth to water table were obtained. It was found that the average means of these values decrease as the depth to water table increases in peat, fine sand, sandy loam, till and varved loam. These relationships can be used to evaluate groundwater balance in other basins. 851090 Flow pattern of a karst aquifer in the Molai area, Greece Ghikas, I C: Kruseman, G P; Leontiadis, I L; Wozab, D H Ground Water 1/21, N4, July-Aug 1983, P445-455 After analysis of the geological, hydrological, isotope and pumping test data of the karst aquifer in Mesozoic Tripolitza carbonates, it was concluded that the carbonates contained two flow systems. The unusual characteristics of the karst can be explained by the continuous tectonic activity which has prevented the completion of various stages of karst development. 851091 Effects of aquifer interconnection resulting from underground coal gasification Stone, R; Raber, E: Winslow, A M Ground Water V21, N5, Sept-Oct 1983, P606-618 An investigation was conducted to evaluate the effects of aquifer interconnection caused by the collapse of cavities formed in coal seams by UCG. The main objective was to assess the changes in groundwater flow patterns near the 2 experiment sites. Hydraulic head measurements in the 3 affected aquifers were used to calibrate a steady state groundwater flow model of the interconnection zone at each site. The effects of aquifer interconnection were found to be less dramatic than expected. 851092 Constant discharge device for aquifer tests on large-diameter wells Athavale, R N: Singh, V S; Subrahmanyam, K Ground Water V21. N6, Nov-Dec 1983, P752-755
The discharge in pumping tests conducted in large diameter wells declines wih the fall in water level, violating the basic requirement in pumping tests that the discharge should remain constant. A simple device to keep the discharge constant has therefore been developed. 851093 Sampling of brine in cores of Precambrian granite from Northern lllinois Couture, R A: Seitz, M G; Steindler, M J J Geophys Res V88, NB9, 10 Sept 1983. P7331-7334 The composition of groundwater in deep-seated rocks is of considerable interest, both geochemically and in connection with the disposal of radioactive waste. A simple technique is presented for the elution of pore fluid from cores of igneous rocks, and the brine eluted from a core of Precambrian granite from N. Illinois, USA, is described, with the aim of finding the composition of the pore fluid and determining its origin. 851094 Predicting ground-water response to precipitation Sangrey, D A; Harrop-Williams, K O; Klaiber, J A J Geotech Engng Div ASCE VllO, NGT7, July 1984, P957975 High ground-water levels are a principal cause of slope instability. A method has been developed for predicting the fluctuation of ground-water levels as a function of precipitation. The approximate method uses measured characteristics of the site or region and a short period ofcalibration from a well record. The linkage of precipitation to ground-water fluctuation can be used in either deterministic or probabilistic methods. The new method has been tested by application in several different geological and climatological areas. Based on these field studies, the sensitivity of the methodology to calibration period, aquifer response time, evapotranspiration and other characteristics has been evaluated. The overall conclusion of the work has been a demonstration that the fluctuation of ground-water levels, including extreme values, can be predicted with sufficient accuracy for many design and analysis problems. 851095 Cokriging of aquifer transmissivities from field measurements of transmissivity and specific capacity Aboufirassi, M; Marino, M A J lnt Assoc Math Geol V16, N1, Jan 1984, P19-35 A new application of the cokriging technique for constructing a map of the logarithm of transmissivity for a groundwater basin from field measurements of transmissivity and specific capacity is presented. The technique is illustrated using data from Yolo Basin, California. Based on geostatistical theory, cokriging can be used to improve the accuracy of estimation of a variable not sufficiently sampled by considering its spatial correlation with other variables that are better sampled. 851096 Geostatistically based approach to the identification of aquifer transmissivities in Yolo Basin, California Aboufirassi, M: Marino, M A J lnt Assoc Math Geol 1/16, N2, Feb 1984, P125-137 A geostatistically based approach is developed for the identification of aquifer transmissivities in Yolo Basin, California. The approach combines weighted least-squares with universal kriging and cokriging techniques in an overall scheme that: (1) considers a priori known information on transmissivity and specific capacity, (2) considers uncertainties in water-level and transmissivity data, and (3) estimates the reliability of the parameter estimates. Minimization of the least-squares function leads to a transmissivity map that shows a good agreement with