Geoscience Reference
In-Depth Information
Table A6.1 (
cont.
)
First
Symbol
Name
Units
equation
V
Vertical force per unit length
N m
−1
(5.56)
v
Relative velocity
cm yr
−1
(2.1)
km s
−1
u
Seismic velocity
(4.6)
km s
−1
v
p
P-wave velocity
km s
−1
v
s
S-wave velocity
w
Width
m
(4.100)
w
Vertical deflection
m
(5.56)
x
Horizontal distance
m
(2.21)
y
Horizontal distance
m
(2.22)
Z
Inward radial component of
the Earth's magnetic field
T
(3.14)
z
Depth
m
(2.23)
km s
−1
α
P-wave velocity
(4.1)
α
Flexural parameter
m
(5.61)
◦
C
−1
α
Coefficient of thermal
expansion
(7.89)
β
Angle
degrees, radians
(2.8)
β
S-wave velocity
km s
−1
(4.2)
β
Stretching factor
(10.8)
Angular distance
degrees, radians
(4.13)
Cubical dilatation
(A2.16)
δ
Dip
(4.42)
η
Dynamic viscosity
Pa s
(8.28)
θ
Angle
degrees
(2.3)
θ
Colatitude
degrees
m
2
s
−1
κ
Thermal diffusivity
(7.43)
κ
Wavenumber
(4.25)
λ
Latitude
degrees
(2.4)
λ
Wavelength
λ
Radioactive decay constant
(6.1)
λ
Lam e elastic constant
Pa
(A2.19)
µ
Shear modulus or Lam e
elastic constant
Pa
(4.4)
TmA
−1
µ
Magnetic permeability of
free space
(3.2)
0
m
2
s
−1
ν
Kinematic viscosity
(8.31)
kg m
−3
ρ
Density
(4.4)
σ
Poisson's ratio
(5.57)
σ
Neutron-capture cross
section
(6.58)