About: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency

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About: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment Goto Sponge Distinct Permalink

An Entity of Type : skos:Concept, within Data Space : foodie-cloud.org, foodie-cloud.org associated with source document(s)

Attributes	Values
type	Concept
versionInfo	1
sameAs	sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment
has broader	http://vocab.nerc.ac.uk/collection/A05/current/EV_WAVES/ http://vocab.nerc.ac.uk/collection/P02/current/WVST/ http://vocab.nerc.ac.uk/collection/P04/current/G976/ http://vocab.nerc.ac.uk/collection/P64/current/G976/
preferred label	sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment (en)
Identifier	SDN:P07::CFV8N75
dc:identifier	SDN:P07::CFV8N75
Date	2008-04-15 14:00:00.0
definition	The wave directional spectrum can be written as a five dimensional function S(t,x,y,f,theta) where t is time, x and y are horizontal coordinates (such as longitude and latitude), f is frequency and theta is direction. S has the standard name sea_surface_wave_directional_variance_spectral_density. S can be integrated over direction to give S1= integral(S dtheta) and this quantity has the standard name sea_surface_wave_variance_spectral_density. Frequency moments, M(n) of S1 can then be calculated as follows: M(n) = integral(S1 f^n df), where f^n is f to the power of n. The second wave period, T(m2) is calculated as the square root of the ratio M(0)/M(2). (en)
notation	SDN:P07::CFV8N75
alternative label
owl:deprecated	false
note	accepted (en)
void:inDataset	http://vocab.nerc.ac.uk/.well-known/void
has related	http://vocab.nerc.ac.uk/collection/P06/current/UTBB/
http://purl.org/pav/authoredOn	2008-04-15 14:00:00.0
http://purl.org/pav/hasCurrentVersion	http://vocab.nerc.ac.uk/collection/P07/current/CFV8N75/1/
http://purl.org/pav/version	1
is has member of	Climate and Forecast Standard Names

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