Geothermal sensors placed across Cruquius neighbourhood

Small white and orange boxes have appeared near trees and bushes across Cruquius as part of a regional geothermal energy study.

The devices are geophones, or ground microphones, placed by research project SCAN to map deep underground soil layers.

Mapping underground heat potential

The goal of the study is to determine whether geothermal heat can eventually be used to heat homes and businesses.

To measure underground structures, vibrations are sent into the soil at various locations. The geophone boxes record the signals that bounce back from deeper rock layers, creating an image of the ground kilometres below.

According to the municipality of Amsterdam, fieldwork began in mid-August and the measurements will continue until December across Amsterdam and 14 surrounding municipalities.

Residents living near measurement points receive an informational letter in advance from the municipality, and workers will remove the devices once the research is complete.

Source: Oost Online