About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The existence of a comparatively thin surface layer with a low velocity characteristic has been recognized in seismic work for several years, and has been generally referred to as the "weathered layer." This low velocity surface characteristic has been found to be almost universally present regardless of the nature of the surface deposits, and does not conform to the geologic weathering of the area.
The purpose of the writer is to offer as an explanation of this phenomenon, the mixture of air in a free state with surface materials. Theoretical calculations, if the earth is assumed to be a fluid, indicate that velocities less than that of sound in air should be obtained from such mixtures. This is borne out by experimental data, as far as available, indicating that this so-called weathered layer might properly be termed an "aerated" layer.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
|Protected Document: $10|
|Internal PDF Document: $14|
|Open PDF Document: $24|
Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].