Deep and shallow seismic studies: Results

Ocean Ambient Noise Studies for Shallow and Deep Water Environments

Research over the past several years has shown that breaking wave noise can be used for remote sensing of the environment. There are several advantages to passive remote sensing including simple measurement requirements and minimal environmental impact. While ocean ambient noise has been studied for decades, much of the interest has been on determining the impact of noise on sonar performance. ...

Pitfalls in Shallow Seismic Reflection

Substantial progress has occurred during the past 15 years in development of shallow CDP seismic-reflection techniques, but there are occasional interpretation problems with the resulting data. We discuss examples of the pitfalls of the method, along with some procedures to help avoid them. Problems that often occur include spatial aliasing of ground roll, interpreting processed ground-coupled ...

Interlinguas: Deep and Shallow

In 1629, Descartes proposed a “language of true philosophy” to serve as an interlingua for translating between languages. Over 300 years later, “semantic interlingua” appears on the top of the Vauquois triangle, as the deepest possible analysis guaranteeing the best possible translation. But the main stream of machine translation has considered the interlingua unrealistic and worked on lower le...

A Numerical Evaluation of Seismic Response of Shallow Soil Deposits

This paper employs one-dimensional numerical ground response analysis models to investigate seismic response of shallow cohesive and non-cohesive soil deposits on vertical propagation of horizontal shear waves. Soil response is modelled by traditional equivalent-linear (EL) frequency-domain analysis using DEEPSOIL software and nonlinear (NL) time-domain analysis using OPENSEES software. The ana...

Seismic Bearing Capacity of Shallow Foundations