Use this geological calculation for a transparent first-pass interpretation of measured rock, soil, fluid, well, stratigraphic, isotopic, geophysical, or seismic data under an explicitly selected model.

Te

Effective elastic thickness of the lithosphere in meters.

E

Young's modulus in pascals.

nu

Poisson's ratio, dimensionless, between 0 and 0.5.

Convert lithospheric elastic thickness to flexural rigidity D = E Te^3 / (12 (1 - nu^2)) with Te in meters, Young's modulus in pascals and rigidity in newton meters. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

D

Flexural rigidity in newton meters.

• Gravity, magnetic, flexural, and subsidence interpretations are non-unique and depend on datum, corrections, density or susceptibility contrasts, regional removal, geometry, elastic assumptions, and noise. A corrected anomaly is not a unique subsurface model.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Compare independent measurements and models, retain units and analytical metadata, propagate uncertainty, and validate interpretations against logs, cores, maps, laboratory data, or field observations.

• Flexural Rigidity Calculator

  Flexural rigidity of an elastic lithospheric plate: D = E * Te^3 / (12 * (1 - nu^2)).

• Seismic Moment Calculator

  Seismic moment M0 = mu * A * D with rigidity in pascals, rupture area in square meters and average slip in meters; result in newton meters.

• Hydraulic Conductivity From Permeability Calculator

  Convert intrinsic permeability in square meters to hydraulic conductivity in meters per second via K = k * rho * g / mu (defaults for water at 20 degrees Celsius).