Science / Tides and Currents / Duration Of Flood And Duration Of Ebb: Duration of flood is the interval of time in which a tidal current is flooding, and duration of ebb is the interval in which it is ebbing, these intervals being reckoned from the middle of the intervening slack waters or minimum currents. Together they cover, on an average, a period of 12.42 hours for a semidiurnal tidal current or a period of 24.84 hours for a diurnal current. In a normal semidiurnal tidal current, the duration of flood and duration of ebb each will be approximately equal to 6.21 hours, but the times maybe modified greatly by the presence of non-tidal flow. In a river the duration of ebb is usually longer than the duration of flood because of fresh water discharge, especially during spring months when snow and ice melt are predominant influences.
Ebb Noun Synonyms: decline, decay, decrease, diminution, wane, drop, slackening (off), dwindling, lessening, deterioration, degeneration
Ebb Verb Synonyms: recede, flow back, subside, go out, go down, fall back or away, retreat, retrocede, retire
Flood Verb Synonyms: inundation, deluge, overflow(ing), d‚bƒcle
Flood Noun Synonyms: abundance, deluge, overflowing, surge, outpouring, torrent, tide, tidal wave, stream, rush, flow, glut, surfeit, satiety, profusion, over-abundance, superabundance, nimiety, plethora, excess, surplus, superfluity
Business / Real Estate / Point Of Beginning (POB): In a metes-and bounds legal description, the starting point of the survey, situated in one corner of the parcel, all metes-and-bounds descriptions must follow the boundaries of the parcel back to the MORE
Health / Disease / Point Of Exposure: The place where someone can come into contact with a substance present in the environment [see exposure pathway]. MORE