OBSERVATION OF A RELATIVELY LOW APPARENT VELOCITY AND HIGH ABSORPTION LAYER AT 39·0°–40·2° EPICENTRAL DISTANCES BY USING P WAVES

OBSERVATION OF A RELATIVELY LOW APPARENT VELOCITY AND HIGH ABSORPTION LAYER AT 39·0°–40·2° EPICENTRAL DISTANCES BY USING P WAVES

A study of the travel time of first arrival P waves from underground nuclear and chemical explosions within a narrow epicentral distance range of 37·0° – 43·0°, shows the presence of a relatively low apparent velocity region at 39·0°–40·2° epicentral distance. Amplitude absorption studies of the fou...

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Veröffentlicht in:Current science (Bangalore) 1973-06, Vol.42 (11), p.385-387
1. Verfasser: Sarmah, S. K.
Format: Artikel
Sprache:eng
Schlagworte:
Amplitude
LETTERS TO THE EDITOR
Low speed
P waves
Travel time
Wave velocity
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Zusammenfassung:A study of the travel time of first arrival P waves from underground nuclear and chemical explosions within a narrow epicentral distance range of 37·0° – 43·0°, shows the presence of a relatively low apparent velocity region at 39·0°–40·2° epicentral distance. Amplitude absorption studies of the four events tend to show a low one cycle Q region around 40° epicentral distance.
ISSN:0011-3891