IODP SEDIS - Thesaurus -

frequency
RT	broad-band spectra
	Doppler effect
	frequency domain analysis
	frequency sounding
	periodicity
	recurrence interval
	seismic coherency
SN	Used as a general term.

frequency distribution
SN	Not a valid term for GeoRef. For statistical frequency distribution, use statistical distribution. For seismology or geophysical methods, use frequency.

frequency domain analysis
RT	analysis
	elastic waves
	electromagnetic methods
	frequency
	geophysical methods
	seismic coherency
	seismic methods
	seismology
	time domain analysis
SN	Added to Thesaurus in 1985.

frequency sounding
RT	deep sounding
	frequency
	geophysical methods
	geophysical surveys
	sounding
SN	Added to Thesaurus in 1982.