Abstract: A relative determination method for seismometer sensitivity is introduced in this paper. The test seismometer and a carefully calibrated seismometer are put side by side and oriented in the same direction so that they can record the same ground motion. By analyzing the output signals from both seismometers, we can calculate the sensitivity of the test seismometer. Compared with using a shake table, this method is economically low cost. Compared with the electrical method, it does not involve the calibration constant. It is an accurate method to test seismometer sensitivity and it′s easy to carry out.

Key words: Seismometer sensitivity, Calibration, Relative determination, Shake table, Electrical method