Figure 7From: Characterization of the response of spring-based relative gravimeters during paroxysmal eruptions at Etna volcanoCoupling factors K ( h ) z (a) and K ( z ) z (b) of the LaCoste & Romberg D#185 gravimeter. The factors were calculated considering the instrumental response and the amplitude of the horizontal (a, vibration amplitude 2 mg) and vertical (b, vibration amplitude 1.0 mg) excitations at different frequencies.Back to article page