Suppose the minor peak in Figure 9.17 at f = 13/256 = 0.0508 mo–1 resulted in part from aliasing. a. Compute a frequency that could have produced this spurious signal in the spectrum. b. How often...

Suppose the minor peak in Figure 9.17 at f = 13/256 = 0.0508 mo–1 resulted in part from aliasing.

a. Compute a frequency that could have produced this spurious signal in the spectrum.

b. How often would the underlying sea-level pressure data need to be recorded and processed in order to resolve this frequency explicitly?