Inside the outdoor cabinet of the seismological station SDOF in Saint-Denis-d’Oléron (Charente-Maritime), with the control/command cabinet on top. The low-voltage board, on the left, fits into a 19″ rack; the low-voltage board, on the right, forms an L shape to adapt to narrower technical rooms (seen from the perpendicular part in the right frame).This observation site is part of the French seismological and geodetic network Résif, a national research infrastructure dedicated to the observation and understanding of the structure and dynamics of the Internal Earth. Résif is based on high-tech observation networks, composed of seismological, geodetic and gravimetric instruments deployed in a dense manner throughout France. The data collected ...