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CONTINUOUS VELOCITY LOGGING [1 record]
Record 1 - internal organization data 2000-06-27
Record 1, English
Record 1, Subject field(s)
- Geophysics
- Scientific Measurements and Analyses
- Geological Prospecting
Record 1, Main entry term, English
- sonic logging
1, record 1, English, sonic%20logging
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- continuous velocity logging 2, record 1, English, continuous%20velocity%20logging
- vertical logging 3, record 1, English, vertical%20logging
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The recording of the time required for a sound wave to travel a specific distance through a formation. 4, record 1, English, - sonic%20logging
Record number: 1, Textual support number: 1 OBS
The difference in observed travel times are due mainly to variations in porosities of the medium. 4, record 1, English, - sonic%20logging
Record 1, Key term(s)
- continuous-velocity logging
- velocity logging
Record 1, French
Record 1, Domaine(s)
- Géophysique
- Mesures et analyse (Sciences)
- Prospection géologique
Record 1, Main entry term, French
- carottage continu des vitesses sismiques
1, record 1, French, carottage%20continu%20des%20vitesses%20sismiques
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le carottage continu des vitesses sismiques [...] consiste à mesurer la vitesse sismique pour de petits intervalles de distance suivant la verticale en descendant la sonde dans le trou de forage. L'impulsion acoustique est engendrée par la décharge d'un arc électrique puissant ou provient d'une source d'ondes supersoniques ou d'une autre nature, elle se propage dans la roche sur une distance de quelques mètres (1-3 m ou 4-10 pi); le signal est capté par un géophone et un compteur de temps électronique mesure le temps de propagation de l'onde sismique entre la source émettrice et le récepteur séparés par une distance constante. Cette constante est si petite que la sonde mesure la vitesse sismique [...] comme une fonction continue de la profondeur [...] 1, record 1, French, - carottage%20continu%20des%20vitesses%20sismiques
Record 1, Spanish
Record 1, Textual support, Spanish
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