|  | G |
SECTION G — PHYSICS

INSTRUMENTS

|  | G01 |
MEASURING (counting Fulltext... Hierarchy... Expanded...G06M); TESTING

|  | G01V |
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS (detecting or locating foreign bodies for diagnostic, surgical or person-identification purposes Fulltext... Hierarchy... Expanded...A61B; means for indicating the location of accidentally buried, e.g. snow-buried, persons Fulltext... Hierarchy... Expanded...A63B 29/02; measuring chemical or physical properties of earth materials Fulltext... Hierarchy... Expanded...G01N; measuring electric or magnetic variables in general, other than direction or magnitude of the earth's field Fulltext... Hierarchy... Expanded...G01R; radar, sonar or analogous methods Fulltext... Hierarchy... Expanded...G01S 13/00, Fulltext... Hierarchy... Expanded...G01S 15/00, Fulltext... Hierarchy... Expanded...G01S 17/00)

|  | G01V |
Note(s) Attention is drawn to the notes immediately following the class title (Fulltext... Hierarchy... Expanded...G01). The geophysical methods of this sub-class apply both to the earth and to other celestial objects, e.g. planets.

|  | G01V 1/00 |
Seismology; Seismic or acoustic prospecting or detecting

|  | G01V 1/02 |
· | Generating seismic energy (blasting in general Fulltext... Hierarchy... Expanded...F42; nuclear explosives Fulltext... Hierarchy... Expanded...G21J)

|  | G01V 1/04 |
· · | Details

|  | G01V 1/047 |
· · · | Arrangements for coupling the generator to the ground [3]

|  | G01V 1/053 |
· · · · | for generating transverse waves [3]

|  | G01V 1/06 |
· · · | Ignition devices (Fulltext... Hierarchy... Expanded...G01V 1/393 takes precedence)

|  | G01V 1/08 |
· · · · | involving time-delay devices

|  | G01V 1/09 |
· · · | Transporting arrangements, e.g. on vehicles (Fulltext... Hierarchy... Expanded...G01V 1/38 takes precedence) [3]

|  | G01V 1/10 |
( transferred to Fulltext... Hierarchy... Expanded...G01V 1/104 )

|  | G01V 1/104 |
· · | using explosive charges (Fulltext... Hierarchy... Expanded...G01V 1/157 takes precedence) [3]

|  | G01V 1/108 |
· · · | by deforming or displacing surfaces of enclosures [3]

|  | G01V 1/112 |
· · · · | for use on the surface of the earth [3]

|  | G01V 1/116 |
· · · | where pressurised combustion gases escape from the generator in a pulsating manner, e.g. for generating bursts [3]

|  | G01V 1/12 |
( transferred to Fulltext... Hierarchy... Expanded...G01V 1/104 )

|  | G01V 1/13 |
· · · | Arrangements or disposition of charges to produce a desired pattern in space or time

|  | G01V 1/133 |
· · | using fluidic driving means, e.g. using highly pressurised fluids (Fulltext... Hierarchy... Expanded...G01V 1/104 takes precedence) [3]

|  | G01V 1/135 |
· · · | by deforming or displacing surfaces of enclosures [3]

|  | G01V 1/137 |
· · · | which fluids escape from the generator in a pulsating manner, e.g. for generating bursts [3]

|  | G01V 1/14 |
( transferred to Fulltext... Hierarchy... Expanded...G01V 1/133, Fulltext... Hierarchy... Expanded...G01V 1/143 )

|  | G01V 1/143 |
· · | using mechanical driving means (Fulltext... Hierarchy... Expanded...G01V 1/104, Fulltext... Hierarchy... Expanded...G01V 1/133 takes precedence) [3]

|  | G01V 1/145 |
· · · | by deforming or displacing surfaces [3]

|  | G01V 1/147 |
· · · | using impact of dropping masses [3]

|  | G01V 1/153 |
· · · | using rotary unbalanced masses [3]

|  | G01V 1/155 |
· · · | using reciprocating masses [3]

|  | G01V 1/157 |
· · | using spark discharges; using exploding wires (spark gaps, non-enclosed discharge apparatus, not otherwise provided for Fulltext... Hierarchy... Expanded...H01T) [3]

|  | G01V 1/16 |
· | Receiving elements for seismic signals (electromechanical transducers Fulltext... Hierarchy... Expanded...H04R); Arrangements or adaptations of receiving elements

|  | G01V 1/18 |
· · | Receiving elements, e.g. seismometer, geophone [2]

|  | G01V 1/20 |
· · | Arrangements of receiving elements, e.g. geophone pattern

|  | G01V 1/22 |
· | Transmitting seismic signals to recording or processing apparatus (signal-transmitting systems in general Fulltext... Hierarchy... Expanded...G08C; electric transmission systems Fulltext... Hierarchy... Expanded...H04B)

|  | G01V 1/24 |
· | Recording seismic data (transforming one recording into another Fulltext... Hierarchy... Expanded...G01V 1/32; recording measured values in general Fulltext... Hierarchy... Expanded...G01D)

|  | G01V 1/26 |
· · | Reference-signal-transmitting devices, e.g. indicating moment of firing of shot

|  | G01V 1/28 |
· | Processing seismic data, e.g. analysis, for interpretation, for correction (computing in general Fulltext... Hierarchy... Expanded...G06)

|  | G01V 1/30 |
· · | Analysis

|  | G01V 1/32 |
· · | Transforming one recording into another

|  | G01V 1/34 |
· · | Displaying seismic recordings

|  | G01V 1/36 |
· · | Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy

|  | G01V 1/37 |
· · · | specially adapted for seismic systems using continuous agitation of the ground [3]

|  | G01V 1/38 |
· | specially adapted for water-covered areas (Fulltext... Hierarchy... Expanded...G01V 1/28 takes precedence)

|  | G01V 1/387 |
· · | Reducing secondary bubble pulse, i.e. reducing the detected signals resulting from the generation and release of gas bubbles after the primary explosion [3]

|  | G01V 1/393 |
· · | Means for loading explosive underwater charges, e.g. combined with ignition devices [3]

|  | G01V 1/40 |
· | specially adapted for well-logging

|  | G01V 3/00 |
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation (for navigation, for surveying Fulltext... Hierarchy... Expanded...G01C) [2]

|  | G01V 3/02 - G01V 3/14 |
Note(s) Groups Fulltext... Hierarchy... Expanded...G01V 3/15 and Fulltext... Hierarchy... Expanded...G01V 3/18 take precedence over groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G01V 3/02-G01V 3/14. [3]

|  | G01V 3/02 |
· | operating with propagation of electric current

|  | G01V 3/04 |
· · | using dc

|  | G01V 3/06 |
· · | using ac

|  | G01V 3/08 |
· | operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices (with electromagnetic waves Fulltext... Hierarchy... Expanded...G01V 3/12; measuring the magnetic field characteristics of the earth Fulltext... Hierarchy... Expanded...G01V 3/40)

|  | G01V 3/10 |
· · | using induction coils

|  | G01V 3/11 |
· · · | for detecting conductive objects, e.g. firearms, cables or pipes [3]

|  | G01V 3/12 |
· | operating with electromagnetic waves

|  | G01V 3/14 |
· | operating with electron or nuclear magnetic resonance

|  | G01V 3/15 |
· | specially adapted for use during transport, e.g. by a person, vehicle or boat [3]

|  | G01V 3/16 |
· · | specially adapted for use from aircraft (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G01V 3/165-G01V 3/175 take precedence)

|  | G01V 3/165 |
· · | operating with magnetic or electric fields produced or modified by the object or by the detecting device (with electromagnetic waves Fulltext... Hierarchy... Expanded...G01V 3/17) [3]

|  | G01V 3/17 |
· · | operating with electromagnetic waves [3]

|  | G01V 3/175 |
· · | operating with electron or nuclear magnetic resonance [3]

|  | G01V 3/18 |
· | specially adapted for well-logging

|  | G01V 3/20 |
· · | operating with propagation of electric current [3]

|  | G01V 3/22 |
· · · | using dc [3]

|  | G01V 3/24 |
· · · | using ac [3]

|  | G01V 3/26 |
· · | operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device (with electromagnetic waves Fulltext... Hierarchy... Expanded...G01V 3/30) [3]

|  | G01V 3/28 |
· · · | using induction coils [3]

|  | G01V 3/30 |
· · | operating with electromagnetic waves [3]

|  | G01V 3/32 |
· · | operating with electron or nuclear magnetic resonance [3]

|  | G01V 3/34 |
· · | Transmitting data to recording or processing apparatus; Recording data [3]

|  | G01V 3/36 |
· | Recording data (Fulltext... Hierarchy... Expanded...G01V 3/34 takes precedence) [3]

|  | G01V 3/38 |
· | Processing data, e.g. for analysis, for interpretation, for correction (computing in general Fulltext... Hierarchy... Expanded...G06) [3]

|  | G01V 3/40 |
· | specially adapted for measuring magnetic field characteristics of the earth [3]

|  | G01V 5/00 |
Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity (determining the properties of materials Fulltext... Hierarchy... Expanded...G01N; measuring nuclear radiation Fulltext... Hierarchy... Expanded...G01T)

|  | G01V 5/02 |
· | specially adapted for surface logging, e.g. from aircraft [3]

|  | G01V 5/04 |
· | specially adapted for well-logging [3]

|  | G01V 5/06 |
· · | for detecting naturally radioactive minerals [3]

|  | G01V 5/08 |
· · | using primary nuclear radiation sources or X-rays [3]

|  | G01V 5/10 |
· · · | using neutron sources [3]

|  | G01V 5/12 |
· · · | using gamma- or X-ray sources [3]

|  | G01V 5/14 |
· · · | using a combination of several sources, e.g. a neutron and a gamma source [3]

|  | G01V 7/00 |
Measuring gravitational fields or waves; Gravimetric prospecting or detecting

|  | G01V 7/02 |
· | Details

|  | G01V 7/04 |
· · | Electric, photoelectric, or magnetic indicating or recording means

|  | G01V 7/06 |
· · | Analysis or interpretation of gravimetric records

|  | G01V 7/08 |
· | using balances (balances in general Fulltext... Hierarchy... Expanded...G01G)

|  | G01V 7/10 |
· · | using torsion balances, e.g. Eötvös balance

|  | G01V 7/12 |
· | using pendulums

|  | G01V 7/14 |
· | using free-fall time

|  | G01V 7/16 |
· | specially adapted for use on moving platforms, e.g. ship, aircraft

|  | G01V 9/00 |
Prospecting or detecting by methods not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G01V 1/00-G01V 7/00

|  | G01V 9/02 |
· | Determining existence or flow of underground water

|  | G01V 9/04 |
· | by optical means, e.g. light barriers (counting of objects carried by a conveyer Fulltext... Hierarchy... Expanded...G06M 7/00; signalling or calling arrangements Fulltext... Hierarchy... Expanded...G08B; detecting movement of traffic to be counted or controlled Fulltext... Hierarchy... Expanded...G08G 1/01; discharge tubes detecting the presence of radiation Fulltext... Hierarchy... Expanded...H01J 40/00, Fulltext... Hierarchy... Expanded...H01J 47/00; semiconductor devices sensitive to light Fulltext... Hierarchy... Expanded...H01L 31/00; proximity switches Fulltext... Hierarchy... Expanded...H03K 17/945) [3]

|  | G01V 11/00 |
Prospecting or detecting by methods combining techniques covered by two or more of main groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G01V 1/00-G01V 9/00

|  | G01V 13/00 |
Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by the preceding groups