Unformatted text preview: • Isolated site adjacent to a river. • Basalt basement rock outcrops adjacent to site on far side from the river. • Basal believed to underlie entire site. • Overburden is alluvium and windblown sand Refraction deployment: • Sledge hammer ineffective due to high attenuation of loose surface sand. Used explosives • Series of geophone arrays used to form one long array across the site • For each array use one short and one long offset shot at each end plus a mid-spread shot...
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- Spring '09
- Method, Waste, hammer, sledge hammer, roughest TG curve