A method of studying the propagation of elastic waves through the Earth's subsurface. Various techniques are used for different applications, from refraction and reflection investigations to surface wave studies (MASW).

Set including 24-takeout spread cable with 5m spacing and 30 x 4.5 Hz vertical geophones (Kooter connectors).
24-takeout spread cable with 10m spacing (Mueller clips).
20 x 100 Hz vertical geophones (Mueller clips).