POSC Specifications Version 3.0 |
Epicentre Standard Values ref_spread |
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 |