Many important weather and climate phenomena (e.g., El Nino or hurricanes) are principally driven by atmosphere-surface interaction.

Animals were principally driven along Joseph Screech's trail from Big Oak Flat to Hetch Hetchy.

However, Mr Anand suggested that was driven principally by the better weather: "Physically delivering beer two years ago was tough.

The effort was principally driven by the high material cost of the SmCo permanent magnets, which had been developed earlier.

In recent months, city authorities have noted an rise in subway crime, driven principally by thefts of cellphones and iPods.

WAC efforts are usually driven principally by one of two theories: writing to learn or on learning to write in disciplinary discourses, sometimes also called writing in the disciplines.

Ice shelves are principally driven by gravity-driven pressure from the grounded ice That flow continually moves ice from the grounding line to the seaward front of the shelf.

The growth is being driven principally by the emergence of the Internet as a commercial force.

The magazine has drawn critical praise for its standard of production and design, an aspect that has been principally driven by British art director, Leon Harris.

In forecasting price movements, McAvity says he is "principally driven by a perception of trends with a good sense of the fundamentals."