Spike (S32011) The Spike is a durable ground-penetrating pin designed for firmly anchoring geophones or similar seismic sensors during field data acquisition operations. What is it? The Spike is a rugged fastening component used in geophysical fieldwork to ensure stable and secure placement of sensors—especially geophones—into the ground. What is it used for? Sensor Stabilization: Ensures that geophones or ground-based sensors are properly fixed into the soil. Improved Data Quality: A firmly placed sensor reduces external vibrations and improves the accuracy of seismic data. Adaptability: Suitable for various ground types including soil, mud, gravel, and compact terrain.