Table 1 List of physical parameters and variables used in this work
From: Magma chamber failure and dyke injection threshold for magma-driven unrest at Campi Flegrei caldera
Dyke and magma properties | Value | Uncertainty | Unit |
|---|---|---|---|
Dyke-induced fault heave | 2 | 0.5 | m |
Dyke width | 4 | 1 | m |
Dyke length | 1400 | 50 | m |
Dyke dip dimension | 5700 | 200 | m |
Magma density | 2400 | 50 | kg m−3 |
Magma observed min vesicularity | 0.2 | ||
Vescicled magma density | 1920 | 60 | kg m−3 |
Magma overpressure P0 | 35 | 11 | MPa |
Magma excess pressure Pe | 9.3 | 3.8 | MPa |
Calculated vesiculation Pe = 0 | 0.2 | 0.09 | |
Calculated vesiculation Pe ≠ 0 | 0.26 | 0.08 | |
Compressibility βm | 1.66 × 10−10 | Pa−1 | |
Compressibility βp (f = 0.5) | 2.67 × 10−11 | Pa−1 | |
Host-rock properties | Value | Uncertainty | Unit |
Host-rock density | 2600 | 100 | kg m−3 |
Vp | 3270 | 460 | m s−1 |
Vs | 1900 | 190 | m s−1 |
Vp/Vs | 1.72 | 0.17 | |
Poissonʼs ratio v | 0.24 | 0.08 | |
Shear modulus G | 9.4 | 2.1 | GPa |
Youngʼs Modulus Ed | 23.4 | 5 | GPa |
Bulk Modulus k | 15.3 | 5.6 | GPa |
Compressibility βr | 6.56 × 10−11 | 2.4 × 10−11 | Pa−1 |
Tensile strength T0 | 9.3 | 3.8 | MPa |
