ISSN:
1420-9136
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Summary The time-distance curves, plotted from the first onsets of longitudinal and transverse waves from the earthquakes originating from the foot-hills of the Himalayas, reveal a bi-layered crust in this region. The total crustal thickness has been investigated as 30.1 km, with 13.4 km thick granitic layer and a 16.7 km thick basaltic layer. Longitudinal and transverse wave velocities in the topmost granitic layer are 5.92±0.03 km/sec and 3.54±0.01 km/sec respectively, and those in the basaltic layer are 6.80±0.03 km/sec and 3.92±0.02 km/sec respectively. These velocities, immediately below the crust, are 8.00±0.03 km/sec and 4.54±0.02 km/sec respectively. The Poisson's ratio has also been determined as 0.220±0.006, 0.251±0.007 and 0.262±0.005 respectively in the granitic, basaltic layers and below Moho. There is no existence for any low velocity layer in the crust so investigated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00875913
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