|
2D DC / IP
|
Gravity |
Seismic tomography |
Magnetics |
Resolution |
Station spacing: 1-50m |
Minimum 20m station spacing. |
Station spacing ~5m |
Recommended grid spacing ~5m. |
Depth |
~ 6*(stn spacing) |
~ 0.2*(total line length) |
~ 25m for this case |
~ 0.2*(max. grid width) |
Information type |
2D section (smooth) |
2D section (blocky) |
2D section (smooth) |
3D model |
Sources of noise |
>Metal within the ground.
>Near-site natural or man-made electrical activity. |
>Unknown density anomalies.
>
Severe topography. |
>Industrial activity.
>
Loose surficial materials. |
>Ferrous objects above or below ground. |
Recommended deliverables |
>Raw data images
>2D inverted section images |
>Raw data profiles
>Forward modelled 2D block models |
>Inverted section of velocities |
>3D inversion model |
Daily productivity |
1 line per day (up to 48 stns) |
30 stns per day |
1 line per day (30 stns) |
400 stns |
Costs per field day* |
$900 |
$600 |
$1100 |
$300 |
Processing & reporting costs |
$200 per line |
$200 per line |
$400 per line |
$400 per day of data |