What type of plume is analyzed using the Gaussian method?

The Gaussian method is specifically designed for analyzing continuous plumes. This technique has its roots in the simplified mathematical model that represents the dispersion of pollutants released into the atmosphere from a continuous source. Continuous plumes are characterized by a steady emission of contaminants over time, allowing for the assumption that the concentration of pollutants can be modeled using Gaussian distributions.

In environments where pollutants are released steadily, the Gaussian dispersion model effectively calculates the concentration of substances as they disperse downwind and spread laterally due to dispersion processes in the atmosphere. Key parameters utilized in the Gaussian method—such as emission rate, wind speed, and atmospheric stability—are well-suited for scenarios involving continuous releases.

The Gaussian model is less applicable to scenarios involving puff releases, passive plumes, or explosive plumes, as these situations introduce complexities that deviate from the assumptions underpinning the Gaussian approach. For instance, puff releases involve discrete bursts of emissions rather than a steady flow, while passive plumes vary in terms of source characteristics and emission profiles, making a continuous, steady-state model less relevant. Explosive plumes further complicate the scenario with rapid and unsteady emissions that cannot be effectively captured by a Gaussian distribution.

Thus, the correct answer relates to continuous plumes, as the Gaussian