- Email: [email protected]
Geotechnical implications of subsurface water rise in Kuwait
77A to physical variables. The effects of spatial variability on ARMA modelling of strong ground motions is investigated. Cross correlation between variance stabilised series is analysed for sites in Mexico City, and the correlation and distribution of modelling parameters for the SMART-I dense array in Taiwan is investigated.
922033 Stress states associated with slip along dusters of faults: Application to the aftersbocks of Morgan Hill earthquake, 1984, and Kahnata earthquakes, 1986 Reches, Z
Proc International Conference on Meelumlcs of Jointed and Faulted Rock, Vienna, 18-20 April 1990 P221-228. Publ Rotterdam: A A Balkema, 1990 Studies have been conducted in order to determine the stress state associated with simultaneous slip along a cluster of faults. The stress inversion method which assumes slip to occur in the direction of maximum shear stress is used to analyse aftershocks of earthquakes at Morgan Hill and Kalmata. Disadvantages and difficulties of using focal plane solutions to determine potential slip surfaces are discussed.
Hydrogeology Groundwater See also: 922133, 922134, 922141, 922154, 922155, 922163, 922174,
922034 Geotechnicai implications of subsurface water rise in Kuwait AI-Sanad, H A; Shaqour, F M
Engng Geol V31, NI, Sept 1991, P59.69 There is evidence of a significant rise in groundwater table under Kuwait City, especially in the recent past. Reasons for this are investigated. Excess surface irrigation coupled with loss from utilities arc the main contributory factors. Potential geotechnical problems arising are discussed. The cemented silty sand horizons in the natural calcareous granular soils show reduction in shear strength on saturation.
922035 Complex boundary elements for contaminant transport Hromadka, T V
Environ Software V6, N2, June 1991, P81-86 Easier to use analytical procedures for advection dominated contaminant transport of a conservative species in a steady groundwater flow field have resulted from recent advances in the Complex Variable Boundary Element Method. CVBEM is demonstrated applied to the above problem, and numerical error evaluated using the approximate boundary graphical technique. The CVBEM may also be used to develop analytic test eases for calibration of other contaminant transport numerical models.
922036 Estimating aquifer I~neters from anal v~s of forced fluctuations in well level: an e x m i ~ from the N u b i a formation near Aswan, Egyp~ I. Hydrogeoingteal background and large-scale permeabiUqr estimates Evans, K; Beavan. J; Simpson, D J Geophys Res V96. NB7, July 1991, P12127-12137 Time series analysis of water level data from 6 wells in the Nubian desert near Lake Nasser is presented. For 4 wells, water levels have been monitored at least monthly since 1964. Two new wells were drilled in 1985 and precision piezometers measuring at 0.2hour intervals installed in 5 wells. Water level response to change in level of Lake Nasser over periods from 24 years to 0.4hours is known, The model best fitting the data consists of three horizontal units of total thickness 400rn: an upper water table aquifer; a middle aquiclude, leaky at periods larger than several years; and a basal sandstone aquifer. 922037 Geological setting and deformation history of a low-angle fracture zone at Finns)on, Sweden Tiren, S A
J Hydrol 1/126, NI/2, Aug 1991, P17-43 Geology, geometry, and water flow for a single fracture zone in central Sweden have been studied. The low angle fracture zone in foliated granodiorite is of age about 1.7Ga. It was initially formed as a result of ductile deformation and has subsequently undergone transitional and brittle deformation, and multiple reactivation. The paleohistory of the zone is interpreted. Flow paths and their development are discussed. Flow now occurs primarily in the upper part of the fracture zone, along discrete fractures. Those fractures with a long and complex tectonic history are seen to be the most hydraulically active. 922038 Hydraulic testing and modelling of a low-angle fracture zone at Finnsjon, Sweden Andersson, J E; Ekman, L; Nordqvist, R; Winberg, A
J Hydrol V126, NI/2, Aug 1991, 1'45-77 The hydraulic characteristics of a gently dipping fracture zone in central Sweden have been investigated. Single hole, steady state injection tests, plus transient injection tests in more conductive regions and hydraulic interference tests, were carried out. Two to five thin, highly conductive subzones are found, the uppermost of which is close to the upper boundary of the fracture zone. Lateral and vertical hydraulic anisotropy is indicated. Results are used to help develop numerical models of the fracture zone hydrology. 922039 Groundwater flow conditions in a low-angle fracture zone at Finnsjon, Sweden Gustafsson, E; Andersson, P
J Hydrol V126, NI/2, Aug 1991, P79-111 The natural groundwater flow conditions in a major low-angle fracture zone have been estimated on the basis of tracer and interference tests and hydraulic head measurements. Hydraulic connections were identified and hydraulic parameters estimated from study of transport of tracer-labelled flushing water used while drilling a cored borehole. Hydraulic characteristics of the fractures were determined for three tracer routes. Groundwater pressure gradients have been evaluated. High natural flow rates are seen in the conductive upper part of the zone. Rates are close to that for molecular diffusion in the lower part of the zone.
© 1992 Pergamon Press Ltd. Reproduction not permitted RMMS 29/2--H
922033 Stress states associated with slip along dusters of faults: Application to the aftersbocks of Morgan Hill earthquake, 1984, and Kahnata earthquakes, 1986 Reches, Z
Proc International Conference on Meelumlcs of Jointed and Faulted Rock, Vienna, 18-20 April 1990 P221-228. Publ Rotterdam: A A Balkema, 1990 Studies have been conducted in order to determine the stress state associated with simultaneous slip along a cluster of faults. The stress inversion method which assumes slip to occur in the direction of maximum shear stress is used to analyse aftershocks of earthquakes at Morgan Hill and Kalmata. Disadvantages and difficulties of using focal plane solutions to determine potential slip surfaces are discussed.
Hydrogeology Groundwater See also: 922133, 922134, 922141, 922154, 922155, 922163, 922174,
922034 Geotechnicai implications of subsurface water rise in Kuwait AI-Sanad, H A; Shaqour, F M
Engng Geol V31, NI, Sept 1991, P59.69 There is evidence of a significant rise in groundwater table under Kuwait City, especially in the recent past. Reasons for this are investigated. Excess surface irrigation coupled with loss from utilities arc the main contributory factors. Potential geotechnical problems arising are discussed. The cemented silty sand horizons in the natural calcareous granular soils show reduction in shear strength on saturation.
922035 Complex boundary elements for contaminant transport Hromadka, T V
Environ Software V6, N2, June 1991, P81-86 Easier to use analytical procedures for advection dominated contaminant transport of a conservative species in a steady groundwater flow field have resulted from recent advances in the Complex Variable Boundary Element Method. CVBEM is demonstrated applied to the above problem, and numerical error evaluated using the approximate boundary graphical technique. The CVBEM may also be used to develop analytic test eases for calibration of other contaminant transport numerical models.
922036 Estimating aquifer I~neters from anal v~s of forced fluctuations in well level: an e x m i ~ from the N u b i a formation near Aswan, Egyp~ I. Hydrogeoingteal background and large-scale permeabiUqr estimates Evans, K; Beavan. J; Simpson, D J Geophys Res V96. NB7, July 1991, P12127-12137 Time series analysis of water level data from 6 wells in the Nubian desert near Lake Nasser is presented. For 4 wells, water levels have been monitored at least monthly since 1964. Two new wells were drilled in 1985 and precision piezometers measuring at 0.2hour intervals installed in 5 wells. Water level response to change in level of Lake Nasser over periods from 24 years to 0.4hours is known, The model best fitting the data consists of three horizontal units of total thickness 400rn: an upper water table aquifer; a middle aquiclude, leaky at periods larger than several years; and a basal sandstone aquifer. 922037 Geological setting and deformation history of a low-angle fracture zone at Finns)on, Sweden Tiren, S A
J Hydrol 1/126, NI/2, Aug 1991, P17-43 Geology, geometry, and water flow for a single fracture zone in central Sweden have been studied. The low angle fracture zone in foliated granodiorite is of age about 1.7Ga. It was initially formed as a result of ductile deformation and has subsequently undergone transitional and brittle deformation, and multiple reactivation. The paleohistory of the zone is interpreted. Flow paths and their development are discussed. Flow now occurs primarily in the upper part of the fracture zone, along discrete fractures. Those fractures with a long and complex tectonic history are seen to be the most hydraulically active. 922038 Hydraulic testing and modelling of a low-angle fracture zone at Finnsjon, Sweden Andersson, J E; Ekman, L; Nordqvist, R; Winberg, A
J Hydrol V126, NI/2, Aug 1991, 1'45-77 The hydraulic characteristics of a gently dipping fracture zone in central Sweden have been investigated. Single hole, steady state injection tests, plus transient injection tests in more conductive regions and hydraulic interference tests, were carried out. Two to five thin, highly conductive subzones are found, the uppermost of which is close to the upper boundary of the fracture zone. Lateral and vertical hydraulic anisotropy is indicated. Results are used to help develop numerical models of the fracture zone hydrology. 922039 Groundwater flow conditions in a low-angle fracture zone at Finnsjon, Sweden Gustafsson, E; Andersson, P
J Hydrol V126, NI/2, Aug 1991, P79-111 The natural groundwater flow conditions in a major low-angle fracture zone have been estimated on the basis of tracer and interference tests and hydraulic head measurements. Hydraulic connections were identified and hydraulic parameters estimated from study of transport of tracer-labelled flushing water used while drilling a cored borehole. Hydraulic characteristics of the fractures were determined for three tracer routes. Groundwater pressure gradients have been evaluated. High natural flow rates are seen in the conductive upper part of the zone. Rates are close to that for molecular diffusion in the lower part of the zone.
© 1992 Pergamon Press Ltd. Reproduction not permitted RMMS 29/2--H