Isostatic Model Spectral Representations and Admittance Functions

Spectral representation techniques model the relationship between gravity and topography using mathematical filters called admittance functions. The Australian Ocean Data Network published this theoretical description, which was last updated in April 2026. It details the construction of these functions for elastic and visco-elastic lithospheric rheologies.

Use Cases

• Modeling gravity-topography admittance for elastic lithosphere using the described spectral functions.
• Calculating free-air gravity anomalies for complex topography with visco-elastic rheology models.
• Applying Green's equivalent layer theorem to construct filters for isostatic process representation.
• Comparing computational efficiency of spectral admittance methods against conventional line-integral techniques for isostatic schemes.

Strengths

• Provides specific theoretical examples for both elastic and visco-elastic rheology models.
• Content was updated in April 2026, indicating recent maintenance.

Limitations

• Dataset consists of theoretical documentation (PDF/HTML) with no accompanying numerical data or code.
• No sample data, row counts, or specific columnar data are available for direct analysis.

Provenance

Source

Australian Ocean Data Network via data.gov.au.

Collection Method

Theoretical geophysical modeling and description.

Freshness

Last updated on 2026-04-04.