Abstract
This paper describes the limitations associated with some of the wave grouping measures that are currently available in the literature. A brief review of the new concepts that have been proposed recently to overcome these limitations is also included in it. Extensive analysis of prototype waves is carried out worldwide to establish a relationship between the degree of grouping in waves and their variance spectral density. But some of these analyses have been unable to identify any relationship because of the statistical variability inherent to records of finite length. A brief discussion of this variability is included in this paper.
Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.