1st Lamé parameter
The 1st Lamé parameter, sometimes called Lamé's first parameter, or lambda λ, is an elastic modulus. It is used extensively in quantitative seismic interpretation and rock physics. It was first described by the French mathematician, Gabriel Lamé (right).
In terms of VP and VS
The simplest expression casts λ in terms of bulk modulus and shear modulus μ:
- First Lamé parameter — Wikipedia entry