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Table 1 Physical properties collected in the SAPHYR database

From: SAPHYR: Swiss Atlas of Physical Properties of Rocks: the continental crust in a database

Physical parameters Units Symbol Condition
Density   ρ  
 Bulk g/cm3   Dry/saturated
 Grain g/cm3   Dry/saturated
Porosity   ϕ  
 Absolute %   
 Open totala %   
 Open macro-a %   
 Open micro-a %   
Permeability   κ  
 Absolute md   
 Anisotropy %   
Thermal properties    
 Thermal conductivity W/mK λ Dry/saturated
 Specific heat capacity J/kgK c Dry/saturated
 Conductivity anisotropy %   
Heat production
 238U, 235U, 232Th, 40K content ppm   
 Volumetric heat generation µW/m3 A  
Magnetic properties
 Bulk susceptibility m3/mol K  
 Anisotropy (Kmax/Kmin)    
 Deviation factor P m3/mol ΔK  
Seismic properties
 Ultrasound velocity of P waves km/s Vp Dry, room pressure and temperature
 Vp pressure derivative km/sK Δp − Vp High pressure
 Vp temperature derivative km/sMPa ΔT − Vp High temperature
 Vp recalculated at room pressureb km/s Vp0 Dry, room pressure and temperature
 Ultrasound velocity of S waves km/s Vs Dry, room pressure and temperature
 Vs pressure derivative km/sMPa ΔP − Vs High pressure
 Vs temperature derivative km/sK Δ − Vs High temperature
 Vs recalculated at room pressureb km/s Vs0 Recalculated at room pressureb
 Vp and Vs anisotropy %   Room pressure and temperature
  1. aOnly borehole data
  2. bCalculated at 0 MPa pressure using the dV pressure derivative of experiments conducted at high confining pressure; see text for explanation