POSC Specifications
Version 3.0
Epicentre Standard Values
ref_spread

ref_spread

Standard Instance Values

identifier description source version status
      ref _version .identifier  
split dip An approximately equal number of geophone groups are laid out on each side of the shotpoint. (Sheriff, "Encyclopedic Dictionary of Exploration Geophysics). POSC epicentre 2.1 current
offset split dip The shotpoint is offset from the center of the line of geophone groups. (Sheriff, "Encyclopedic Dictionary of Exploration Geophysics). POSC epicentre 2.1 current
end on The shotpoint is at the end of the line of geophone groups. (Sheriff, "Encyclopedic Dictionary of Exploration Geophysics). POSC epicentre 2.1 current
in-line offset The shotpoint is offset from the end of the line of geophone groups. (Sheriff, "Encyclopedic Dictionary of Exploration Geophysics). POSC epicentre 2.1 current
broadside T The shotpoint is offset a considerable distance perpendicular from the center of the line of geophone groups. (Sheriff, "Encyclopedic Dictionary of Exploration Geophysics). POSC epicentre 2.1 current
broadside L The shotpoint is offset a considerable distance perpendicular from the end of the line of geophone groups. (Sheriff, "Encyclopedic Dictionary of Exploration Geophysics). POSC epicentre 2.1 current
reversed Shotpoints at each ends are used to shoot into the geophone groups. (Sheriff, "Encyclopedic Dictionary of Exploration Geophysics). POSC epicentre 2.1 current
fan Geophone groups are placed in fan-like arrays radiating from the shotpoint. (Sheriff, "Encyclopedic Dictionary of Exploration Geophysics). POSC epicentre 2.1 current

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