Sixteen (16) surface-laid-geophones and fourteen (14)
downhole-laid-hydrophones experiments were conducted in Upper Flood Plain and
in Mangrove Swamp areas respectively in parts of the Niger Delta.
The aim is to compare low-velocity-layer (LVL)
characteristics in the two environments. The velocity
and depth of the weathered layer and those of the consolidated layers were
calculated using depth-time plots.
The interpreted data showed a substantial variation of the
weathered layer thickness and elevation in the two study areas. In the Upper
Flood Plain, LVL thickness varies between 2.8 m and 40 m with an average of
21.46 m.
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