Figure 1 is a block diagram of the DAGS. Its main sensor is a three-axis force- balance quartz-suspension accelero- meter package capable of measuring acceleration levels from 0.1 millig to 1 g and from DC to 20 Hz. In ... The probe tip is 11.5 feet below the sea- floor mudline. ... The CARS is contained in a metal suitcase SEAFLOOR EARTHQUAKE MEASUREMENT SYSTEM (SEMS) OATAG Fig.