This HTML5 document contains 23 embedded RDF statements represented using HTML+Microdata notation.

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Namespace Prefixes

Prefix	IRI
n10	http://vocab.nerc.ac.uk/collection/P02/current/WVST/
dcterms	http://purl.org/dc/terms/
n14	http://vocab.nerc.ac.uk/standard_name/sea_surface_wind_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment/
n9	http://vocab.nerc.ac.uk/collection/P06/current/UTBB/
dc	http://purl.org/dc/elements/1.1/
n5	http://vocab.nerc.ac.uk/collection/P04/current/G976/
n4	http://vocab.nerc.ac.uk/collection/P64/current/G976/
skos	http://www.w3.org/2004/02/skos/core#
n2	http://vocab.nerc.ac.uk/collection/P07/current/CFV8N77/
void	http://rdfs.org/ns/void#
n18	http://vocab.nerc.ac.uk/collection/P07/current/CFV8N77/1/
rdf	http://www.w3.org/1999/02/22-rdf-syntax-ns#
n16	http://vocab.nerc.ac.uk/.well-known/
owl	http://www.w3.org/2002/07/owl#
n17	http://vocab.nerc.ac.uk/collection/P04/current/G980/
xsdh	http://www.w3.org/2001/XMLSchema#
n7	http://purl.org/pav/
n13	http://mmisw.org/ont/cf/parameter/
n12	http://vocab.nerc.ac.uk/collection/P64/current/G980/

Statements

Subject Item

n2:

rdf:type

skos:Concept

owl:versionInfo

1

owl:sameAs

n13:sea_surface_wind_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment n14:

skos:broader

n4: n5: n10: n12: n17:

skos:prefLabel

sea_surface_wind_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment

dcterms:identifier

SDN:P07::CFV8N77

dc:identifier

SDN:P07::CFV8N77

dcterms:date

2008-04-15 14:00:00.0

skos:definition

The wind 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 can be integrated over direction to give S1= integral(S dtheta). 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 inverse wave period, T(m-1), is calculated as the ratio M(-1)/M(0).

skos:notation

SDN:P07::CFV8N77

skos:altLabel

owl:deprecated

false

skos:note

accepted

void:inDataset

n16:void

skos:related

n9:

n7:authoredOn

2008-04-15 14:00:00.0

n7:hasCurrentVersion

n18:

n7:version

1