Seismology Seismic or acoustic prospecting or detecting

GPHYSICS G01Measuring instruments G01VGEOPHYSICS GRAVITATIONAL MEASUREMENTS DETECTING MASSES OR OBJECTS

G01V1/00Seismology Seismic or acoustic prospecting or detecting

G01V1/001Acoustic presence detection G01V1/003Seismic data acquisition in general G01V1/005with exploration systems emitting special signals G01V1/006generating single signals by using more than one generator G01V1/008Earthquake measurement or prediction G01V1/02Generating seismic energy G01V1/04Details G01V1/047Arrangements for coupling the generator to the ground G01V1/0475for controlling "Ground Force" G01V1/053for generating transverse waves G01V1/06Ignition devices G01V1/08involving time-delay devices G01V1/09Transporting arrangements G01V1/104using explosive charges G01V1/108by deforming or displacing surfaces of enclosures G01V1/112for use on the surface of the earth G01V1/116where pressurised combustion gases escape from the generator in a pulsating manner G01V1/13Arrangements or disposition of charges to produce a desired pattern in space or time G01V1/133using fluidic driving means G01V1/135by deforming or displacing surfaces of enclosures G01V1/137which fluid escapes from the generator in a pulsating manner G01V1/143using mechanical driving means G01V1/145by deforming or displacing surfaces G01V1/147using impact of dropping masses G01V1/153using rotary unbalanced masses G01V1/155using reciprocating masses G01V1/157using spark discharges using exploding wires G01V1/159using piezoelectric or magnetostrictive driving means G01V1/16Receiving elements for seismic signals Arrangements or adaptations of receiving elements G01V1/162Details G01V1/164Circuits therefore G01V1/166Arrangements for coupling receivers to the ground G01V1/168Deployment of receiver elements G01V1/18Receiving elements G01V1/181Geophones G01V1/182with moving coil G01V1/183with moving magnet G01V1/184Multi-component geophones G01V1/185with adaptable orientation G01V1/186Hydrophones G01V1/187Direction-sensitive hydrophones G01V1/188with pressure compensating means G01V1/189Combinations of different types of receiving elements G01V1/20Arrangements of receiving elements G01V1/201Constructional details of seismic cables G01V1/202Connectors G01V1/208having a continuous structure G01V1/22Transmitting seismic signals to recording or processing apparatus G01V1/223Radioseismic systems G01V1/226Optoseismic systems G01V1/24Recording seismic data G01V1/242Seismographs G01V1/245Amplitude control for seismic recording G01V1/247Digital recording of seismic data G01V1/26Reference-signal-transmitting devices G01V1/28Processing seismic data G01V1/282Application of seismic models, synthetic seismograms G01V1/284Application of the shear wave component and/or several components of the seismic signal G01V1/286Mode conversion G01V1/288Event detection in seismic signals G01V1/30Analysis G01V1/301for determining seismic cross-sections or geostructures G01V1/302in 3D data cubes G01V1/303for determining velocity profiles or travel times G01V1/305Travel times G01V1/306for determining physical properties of the subsurface G01V1/307for determining seismic attributes G01V1/308Time lapse or 4D effects G01V1/32Transforming one recording into another or one representation into another G01V1/325Transforming one representation into another G01V1/34Displaying seismic recordings or visualisation of seismic data or attributes G01V1/345Visualisation of seismic data or attributes G01V1/36Effecting static or dynamic corrections on records G01V1/362Effecting static or dynamic corrections; Stacking G01V1/364Seismic filtering G01V1/366by correlation of seismic signals G01V1/368Inverse filtering G01V1/37specially adapted for seismic systems using continuous agitation of the ground G01V1/375Correlating received seismic signals with the emitted source signal G01V1/38specially adapted for water-covered areas G01V1/3808Seismic data acquisition G01V1/3817Positioning of seismic devices G01V1/3826dynamic steering G01V1/3835measuring position G01V1/3843Deployment of seismic devices G01V1/3852to the seabed G01V1/3861control of source arrays G01V1/387Reducing secondary bubble pulse G01V1/393Means for loading explosive underwater charges G01V1/40specially adapted for well-logging G01V1/42using generators in one well and receivers elsewhere or vice-versa G01V1/44using generators and receivers in the same well G01V1/46Data acquisition G01V1/48Processing data G01V1/50Analysing data G01V1/52Structural details G01V1/523Damping devices