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Earth, Planets and Space
Fig. 10 | Earth, Planets and Space

Fig. 10

From: Constraints on magma storage conditions based on geodetic volume change and erupted magma volume and application to the 2011 and 2018 eruptions at Kirishima Shinmoe-dake volcano, Japan

Fig. 10

Reproduction of Fig. 5 in Anderson and Segall (2011), showing the ratio of the effective magma chamber compressibility (\(\kappa _\text{ch}\)) of an ellipsoidal source in an elastic half-space to that of a spherical source in a full space (\(3/(4 \mu )\)) as a function of aspect ratio between the semiaxes of the ellipsoid (\(r_\text{v}/r_\text{h}\), where \(r_\text{v}\) and \(r_\text{h}\) are vertical and horizontal axes, respectively). The results were numerically obtained using the finite element method. The chamber volume is kept constant, and the ratio of the distance from the surface to the top of the chamber (d) to the radius of a sphere with an equivalent volume (r) is varied

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