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804065 Frictional attenuation: An inherent amplitude dependence
63A
Compressibility, swelling and consolidation 80405~ STRESS-CONTRC~;~ SI~DY OF SWELLING CHARACTERISTICS OF CC~4PACTED EXPANSIVE CLAYS. TECHNICAL NOTE Dakshanamurthy, V GeCf~ech Test J, V2, NI, March 1979, P57-60 804053 EFFECTS OF RESTRIcI'sD FLOW AT THE SURFACE OF SA%'ORATED CLAY Dereslewlcz, H In, J Num Areal Meth Geomech, V3, N1, Jan-March 1979, Pl-ll The surface deflection, amd the pare pressure at the surface, of a saturated clay mass are computed by modelling the mass mathmnatlcally as a consolidatimg half-space. Relates to the modelling of the settlement of clay soils umder load. 804054 SURFACE SEA'A'L~NT OF A FINITE ELASTIC LAYER WHOSE MODULUs INCREASES LINEARLY WITH DEPTH Brown, P T; Gibson, R E Int J Num Anal Meth Geomech, V3~ NI, Jan-March 1979, P37-47
Dynamic properties 804055 NORTH AMERICAN E X I ~ E N C E IN SAMPLING AND LABORATORY DYNAMIC TES~flNG Horn, H M Geotech Test J, V2, N2, June 1979, P84-97 Improved practice includes block sampling in both cohesive ard noncohesive deposits, the use of rotary drilling with mud in conjunction with a fixed-piston sampler, and the freezing of undisturbed ssmples of granulsr soil after they have been drained to minimize sample disturbance during shipment cr handling. In-situ freezing of granular deposits as a means of stabilizing the soil befcre sampling is a promislng new concept, and X-radiogral~ has proven to be a powerful tool in studies of soil structure and sample disturbance. 804056 COMPILATION OF CYCLIC TRIAXIAL LIQUEFACTION TEST DATA Ferrito, J M; Fortes,, J B; Wu, G Geotech Test J, V2, N2, June 1979, PI06-I13 The objective of this study was to develop a partial data base far determining the seismic strength of saturated cohesionless materials, and, by using this data base, to broaden understanding of the mechanism of soil liquefaction induced in the laboratory. Cyclic triaxial test data were compiled from published literature and from comercial sxrl research laberatcrles involved in cyclic testing of cohesionless soils. Results were grouped by soll type (Unified Classification System).
8o4o57 sTRESS CONDITIONS AND STRESS HISTORIES AFFECTING SHEAR MODULUS AND DAMPING OF SAND UNDER CYCLIC LOADING Tatsuoka, F; Iwasaki, T; Fukushima, S soils Found, Vlg, N2, June 1979, I>29-43
80~058 DEFO~MATION B ~ V I O U R S OF DRY SAND U N D ~ CYCLIC LOADING AND A STRESS-DILATANCY MODEL Tokue, T Soils Fourd, rig, N2, Jure 1979, P63-78 804059 SEISMIC WAVE ATTF/~JATION IN ROCKS Mavko, G; KJartansson, E; Winkler, K Revs Geophys Space Rays, VI7, N6, Sept 1979 , PI155-I164 Reviews the phenemenological description, mechanisms of energ~ dissipation, and experimental results, ll4 refs. 804060 ATI'~:~JATION AND DIsP~SION OF COMPREsSIONAL WAVES IN FLUID FYLLWD ROCKS WITH PARTIAL GAS SATURATION (WHITE MODEL) - PART I: B10T THEGRY, PART 2: RESULTS Dutta~ N C; Ode, H Geophysics, VbJ~, Nll, November 1979, P17771788 (Part 1), P1789-1805 (Part 2) An exact thecry of attenuation and dispersion of seismic waves in IX~OUS rocks containing spherical gas pockets (White model) is presented using the coupled equations of motion given by Biot. Quantitative results are given in the second part of the paper. 80~061 ON WHITE'S M O D ~ OF ATI'EaUATION IN ROCKS WITH PARTIAL GAS SATURATION Duttaj N C; Seriff, A J Geophysics, V44, Nil, Nov 1979, P1806-1812 804062 MECHANICAL HYSTERESIS LOOPS OF AN ANELASq~C SOLID AND THE DsI'EMMINATION OF ROCK ATTENUATION PROPERTIEs Liu, H P; Peselnick, L Geophys Res Let,, V6, N7, July 1979, P545-548 80b~D63 PLANE SHOCK WAVE SvfUDIES OF POROUS GEOLOGIC MEDIA Larson, D B; Anderson, G D J Geophys Res, V84, NBg, i0 Aug 1979, I~592-
46oo Tests were conducted on dry and water saturated samples of Mount Helen tuff and Indiana limestone at stress levels up to 4GPa. The assOciated time dependent behaviour and its causes are discussed. 80~064 CCMPRESSIONAL AND SHEAR WAVES IN SATURATED ROCK DURING WATER-STEAM TRANSITION Ito, H; DeVilbiss r J; Nur, A J Geophys Res, ~ , NB9, i0 Aug 1979, I~731-
4735 P and S wave velocities were measured in waterfilled Barea sandstone as a function of pore pressure at a confining pressure Qf 300 bars at roam temperature, 145C and 198C. The data relate to seismic investigation of geothermal reservoirs. 804065 FRICTIONAL ATTENUATION: AN INHERENT AMPLITUDE DEPENDENCE Mavko, G M J Geophys Res, VS~, NB9, i0 August 1979, P4769-4775 Frlctlom~l sliding on crack surfaces and grain bourdsries is examined as a mechanism of wave attenuation, allowing for irregularities and
Compressibility, swelling and consolidation 80405~ STRESS-CONTRC~;~ SI~DY OF SWELLING CHARACTERISTICS OF CC~4PACTED EXPANSIVE CLAYS. TECHNICAL NOTE Dakshanamurthy, V GeCf~ech Test J, V2, NI, March 1979, P57-60 804053 EFFECTS OF RESTRIcI'sD FLOW AT THE SURFACE OF SA%'ORATED CLAY Dereslewlcz, H In, J Num Areal Meth Geomech, V3, N1, Jan-March 1979, Pl-ll The surface deflection, amd the pare pressure at the surface, of a saturated clay mass are computed by modelling the mass mathmnatlcally as a consolidatimg half-space. Relates to the modelling of the settlement of clay soils umder load. 804054 SURFACE SEA'A'L~NT OF A FINITE ELASTIC LAYER WHOSE MODULUs INCREASES LINEARLY WITH DEPTH Brown, P T; Gibson, R E Int J Num Anal Meth Geomech, V3~ NI, Jan-March 1979, P37-47
Dynamic properties 804055 NORTH AMERICAN E X I ~ E N C E IN SAMPLING AND LABORATORY DYNAMIC TES~flNG Horn, H M Geotech Test J, V2, N2, June 1979, P84-97 Improved practice includes block sampling in both cohesive ard noncohesive deposits, the use of rotary drilling with mud in conjunction with a fixed-piston sampler, and the freezing of undisturbed ssmples of granulsr soil after they have been drained to minimize sample disturbance during shipment cr handling. In-situ freezing of granular deposits as a means of stabilizing the soil befcre sampling is a promislng new concept, and X-radiogral~ has proven to be a powerful tool in studies of soil structure and sample disturbance. 804056 COMPILATION OF CYCLIC TRIAXIAL LIQUEFACTION TEST DATA Ferrito, J M; Fortes,, J B; Wu, G Geotech Test J, V2, N2, June 1979, PI06-I13 The objective of this study was to develop a partial data base far determining the seismic strength of saturated cohesionless materials, and, by using this data base, to broaden understanding of the mechanism of soil liquefaction induced in the laboratory. Cyclic triaxial test data were compiled from published literature and from comercial sxrl research laberatcrles involved in cyclic testing of cohesionless soils. Results were grouped by soll type (Unified Classification System).
8o4o57 sTRESS CONDITIONS AND STRESS HISTORIES AFFECTING SHEAR MODULUS AND DAMPING OF SAND UNDER CYCLIC LOADING Tatsuoka, F; Iwasaki, T; Fukushima, S soils Found, Vlg, N2, June 1979, I>29-43
80~058 DEFO~MATION B ~ V I O U R S OF DRY SAND U N D ~ CYCLIC LOADING AND A STRESS-DILATANCY MODEL Tokue, T Soils Fourd, rig, N2, Jure 1979, P63-78 804059 SEISMIC WAVE ATTF/~JATION IN ROCKS Mavko, G; KJartansson, E; Winkler, K Revs Geophys Space Rays, VI7, N6, Sept 1979 , PI155-I164 Reviews the phenemenological description, mechanisms of energ~ dissipation, and experimental results, ll4 refs. 804060 ATI'~:~JATION AND DIsP~SION OF COMPREsSIONAL WAVES IN FLUID FYLLWD ROCKS WITH PARTIAL GAS SATURATION (WHITE MODEL) - PART I: B10T THEGRY, PART 2: RESULTS Dutta~ N C; Ode, H Geophysics, VbJ~, Nll, November 1979, P17771788 (Part 1), P1789-1805 (Part 2) An exact thecry of attenuation and dispersion of seismic waves in IX~OUS rocks containing spherical gas pockets (White model) is presented using the coupled equations of motion given by Biot. Quantitative results are given in the second part of the paper. 80~061 ON WHITE'S M O D ~ OF ATI'EaUATION IN ROCKS WITH PARTIAL GAS SATURATION Duttaj N C; Seriff, A J Geophysics, V44, Nil, Nov 1979, P1806-1812 804062 MECHANICAL HYSTERESIS LOOPS OF AN ANELASq~C SOLID AND THE DsI'EMMINATION OF ROCK ATTENUATION PROPERTIEs Liu, H P; Peselnick, L Geophys Res Let,, V6, N7, July 1979, P545-548 80b~D63 PLANE SHOCK WAVE SvfUDIES OF POROUS GEOLOGIC MEDIA Larson, D B; Anderson, G D J Geophys Res, V84, NBg, i0 Aug 1979, I~592-
46oo Tests were conducted on dry and water saturated samples of Mount Helen tuff and Indiana limestone at stress levels up to 4GPa. The assOciated time dependent behaviour and its causes are discussed. 80~064 CCMPRESSIONAL AND SHEAR WAVES IN SATURATED ROCK DURING WATER-STEAM TRANSITION Ito, H; DeVilbiss r J; Nur, A J Geophys Res, ~ , NB9, i0 Aug 1979, I~731-
4735 P and S wave velocities were measured in waterfilled Barea sandstone as a function of pore pressure at a confining pressure Qf 300 bars at roam temperature, 145C and 198C. The data relate to seismic investigation of geothermal reservoirs. 804065 FRICTIONAL ATTENUATION: AN INHERENT AMPLITUDE DEPENDENCE Mavko, G M J Geophys Res, VS~, NB9, i0 August 1979, P4769-4775 Frlctlom~l sliding on crack surfaces and grain bourdsries is examined as a mechanism of wave attenuation, allowing for irregularities and