40 



WAVE DIMENSIONS 



the direction of the winds of the right rear quadrant nearly paralleled 

 that of the waves that spread thence (fig. 8). 



Figure 7. — Diagram showing the relative directions of advance of the waves 

 (broken arrows) and of the winds by which they are generated (solid arrows), 

 according to the degree of curvature of the isobars around different parts of a 

 barometric depression. 



Figure 8. — Differences in directions between winds (solid arrows) and waves 

 (broken arrows) in different parts of a tropical Atlantic hurricane. (After 

 Tannehill.) 



