- Email: [email protected]
Radio-indicator tests in hydrogeological boreholes
175A On the mb:Ms criterion the disturbance was indentified as an earthquake, but it has been suggested that it may have been one or more explosions. It is shown that the polarities and relative amplitudes of the main arrivals on the short-period P-wave seismograms of the disturbance can be accounted for by assuming the source was an earthquake in a crust with some lateral variation in structure. There is no evidence that the disturbance was anything other than a single earthquake.
845104 Descriptive statistical model of earthquake source radiation and its application to an estimation of short-period strong motion Gusev, A A Geophys J R Astr Soc V74, N3, Sept 1983, P787-808 A wide-band source spectrum scaling law is derived from various data sources; its main features are: a lack of similitude and two characteristic frequencies of about 0.2 and 5-l 0Hz. F o r sources of great earthquakes a short-period radiation flux is relatively low. The spectrum scaling law is used to determine near-field accelerations. 57 refs.
845105 Source parameter inversion of a reservoir-induced seismic sequence: Lake Kariba, Africa (1963 September) Pavlin, G B; Langston, C A Geopkys J R Astr Soc V74, N3, Sept 1983, P819-841 The depth and seismic source parameters of the three largest reservoir-induced earthquakes associated with the impoundment of Lake Kariba, Africa, were determined, using a moment tensor formalism of the generalized inverse technique. It is suggested that an active N-S running, normal fault underlying the reservoir's deep Sanyati Basin may be the source of the seismicity.
845106 High stress drop events in the Victoria, Baja California earthquake swarm of March 1978 Munguia, L; Brune, J N Geophys J R Astr Soe V76, 173, March 1984, P725-752
845108 Empirical relation between electrical transverse resistance and hydraulic transmissivity Ponzini, G; Ostroman, A; Molinari, M Geoexploration V22, NI, Feb 1984, PI-15 An empirical function between electrical transverse resistances of an aquifer, corrected for the effect of their pore water resistivities, and corresponding hydraulic transmissivities has been found from vertical electrical sounding methods and pumping tests performed on a number of aquifers. It is concluded that the relation is valid only for aquifers characterised by simple hydrogeological situations and simple corresponding electric stratigraphies.
845109 Radio-indicator tests in hydrogeological boreholes Hulla, J; Ravinger, R; Tureek, P lnt Assoc Engng Geol Bull N26-27, Dec 1982-June 1983, P439-442 (Paper to the International Symposium on Soil and Rock Investigations by In Situ Testing, Paris, 18-20 May 1983) Two single-borehole methods are chosen from a number of radio-indicator methods for the determination of water flow parameters and described. The dilution method and the measurement of vertical displacement in boreholes make it possible to limit expensive pumping tests and to give data for the location and projection of the optimum depth of boreholes. The applications of these tests include investigations of landslide areas and a study of the efficiency of sealing elements of foundation excavations.
845110 Comparison of different methods of estimating infiltration at a landfill site in south Essex with implications for leachate management and control Holmes, R Q J Engng Geoi V17, N1, 1984, P9-18
A composite fault plane solution prepared with data from the largest earthquakes of the swarm indicates right lateral strikeslip movement along a vertical plane parallel to the Cerro Prieto fault. Seismic moment, source radius and stress drop are calculated from strong motion records and digital seismograph records. The high stress drop values are corroborated by using a root mean square acceleration formulation. 43 refs.
As a result primarily of rainfall infiltration through waste materials, all landfill sites in the United Kingdom will produce leachate. A procedure for estimating rainfall infiltration through landfill sites founded on readily and cheaply available Meteorological Office data is presented. This accounts for the distribution of rainfall throughout the year and shows that for a site in south Essex, between 14 and 34% (average 24%) of annual rainfall infiltrated in the past eight years. Winter and summer operational strategies which may minimize the production of ieachate are summarized.
Frost action, permafrost and frozen ground
Groundwater
See also: 845182, 845287
See also: 845059
845107 Results of observations on actual freezing depth of soils Kiselev, M F Soil Mech Found Engng V19, N6, Nov-Dec 1982, P267-268
845111 Permeability determination of the alluvium using electrical prospecting (In French) Allessandrello, E; Lemoine, Y lnt Assoc Engng Geol Bull N26-27, Dec 1982-June 1983, P357-360 (Paper to the International Symposium on Soil and Rock Investigations by In Situ Testing, Paris, 18-20 May 1983)
Presents data on the actual freezing depth of soils in the area of the Lenin Hills, Moscow, USSR, over a period of 26 years.
Hydrogeology See also: 845335
Resistivity surveys have been carried out along the Saone, Rhone and Loire valleys to locate water wells in alluvial aquifers. Empirical relationships drawn up between resistivity and permeability show that there is a relationship between these two factors for each type of sedimentation, if various factors such as water resistivity and unsaturated zones are allowed for and corrected.
845104 Descriptive statistical model of earthquake source radiation and its application to an estimation of short-period strong motion Gusev, A A Geophys J R Astr Soc V74, N3, Sept 1983, P787-808 A wide-band source spectrum scaling law is derived from various data sources; its main features are: a lack of similitude and two characteristic frequencies of about 0.2 and 5-l 0Hz. F o r sources of great earthquakes a short-period radiation flux is relatively low. The spectrum scaling law is used to determine near-field accelerations. 57 refs.
845105 Source parameter inversion of a reservoir-induced seismic sequence: Lake Kariba, Africa (1963 September) Pavlin, G B; Langston, C A Geopkys J R Astr Soc V74, N3, Sept 1983, P819-841 The depth and seismic source parameters of the three largest reservoir-induced earthquakes associated with the impoundment of Lake Kariba, Africa, were determined, using a moment tensor formalism of the generalized inverse technique. It is suggested that an active N-S running, normal fault underlying the reservoir's deep Sanyati Basin may be the source of the seismicity.
845106 High stress drop events in the Victoria, Baja California earthquake swarm of March 1978 Munguia, L; Brune, J N Geophys J R Astr Soe V76, 173, March 1984, P725-752
845108 Empirical relation between electrical transverse resistance and hydraulic transmissivity Ponzini, G; Ostroman, A; Molinari, M Geoexploration V22, NI, Feb 1984, PI-15 An empirical function between electrical transverse resistances of an aquifer, corrected for the effect of their pore water resistivities, and corresponding hydraulic transmissivities has been found from vertical electrical sounding methods and pumping tests performed on a number of aquifers. It is concluded that the relation is valid only for aquifers characterised by simple hydrogeological situations and simple corresponding electric stratigraphies.
845109 Radio-indicator tests in hydrogeological boreholes Hulla, J; Ravinger, R; Tureek, P lnt Assoc Engng Geol Bull N26-27, Dec 1982-June 1983, P439-442 (Paper to the International Symposium on Soil and Rock Investigations by In Situ Testing, Paris, 18-20 May 1983) Two single-borehole methods are chosen from a number of radio-indicator methods for the determination of water flow parameters and described. The dilution method and the measurement of vertical displacement in boreholes make it possible to limit expensive pumping tests and to give data for the location and projection of the optimum depth of boreholes. The applications of these tests include investigations of landslide areas and a study of the efficiency of sealing elements of foundation excavations.
845110 Comparison of different methods of estimating infiltration at a landfill site in south Essex with implications for leachate management and control Holmes, R Q J Engng Geoi V17, N1, 1984, P9-18
A composite fault plane solution prepared with data from the largest earthquakes of the swarm indicates right lateral strikeslip movement along a vertical plane parallel to the Cerro Prieto fault. Seismic moment, source radius and stress drop are calculated from strong motion records and digital seismograph records. The high stress drop values are corroborated by using a root mean square acceleration formulation. 43 refs.
As a result primarily of rainfall infiltration through waste materials, all landfill sites in the United Kingdom will produce leachate. A procedure for estimating rainfall infiltration through landfill sites founded on readily and cheaply available Meteorological Office data is presented. This accounts for the distribution of rainfall throughout the year and shows that for a site in south Essex, between 14 and 34% (average 24%) of annual rainfall infiltrated in the past eight years. Winter and summer operational strategies which may minimize the production of ieachate are summarized.
Frost action, permafrost and frozen ground
Groundwater
See also: 845182, 845287
See also: 845059
845107 Results of observations on actual freezing depth of soils Kiselev, M F Soil Mech Found Engng V19, N6, Nov-Dec 1982, P267-268
845111 Permeability determination of the alluvium using electrical prospecting (In French) Allessandrello, E; Lemoine, Y lnt Assoc Engng Geol Bull N26-27, Dec 1982-June 1983, P357-360 (Paper to the International Symposium on Soil and Rock Investigations by In Situ Testing, Paris, 18-20 May 1983)
Presents data on the actual freezing depth of soils in the area of the Lenin Hills, Moscow, USSR, over a period of 26 years.
Hydrogeology See also: 845335
Resistivity surveys have been carried out along the Saone, Rhone and Loire valleys to locate water wells in alluvial aquifers. Empirical relationships drawn up between resistivity and permeability show that there is a relationship between these two factors for each type of sedimentation, if various factors such as water resistivity and unsaturated zones are allowed for and corrected.