"sea_surface_wave_significant_period"@en . "SDN:P07::HEKWBIH1" . "accepted"@en . . "2017-03-27 15:08:34.0" . "Significant wave period is a statistic computed from wave measurements and corresponds to the mean wave period of the highest one third of the waves. A period is an interval of time, or the time-period of an oscillation. Wave period is the interval of time between repeated features on the waveform such as crests, troughs or upward passes through the mean level."@en . "1" . "1" . "false" . . "" . "2017-03-27 15:08:34.0" . "SDN:P07::HEKWBIH1" . . . . "SDN:P07::HEKWBIH1" . .