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East Korea Warm CurrentA current branching off from the Tsushima Current as it enters the Japan Sea through the Korea Strait. It follows the Korean coast northward to 36°–38°N where it meets the North Korea Cold Current to establish the polar front of the Japan Sea. It continues northeastward along the southern side of the polar front, shifting its path every few months and shedding eddies along the way. It rejoins the Tsushima Current before reaching 40°N.
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East Madagascar CurrentOne of the western boundary currents of the subtropical gyre in the southern Indian Ocean. It originates near 20°S where the South Equatorial Current splits east of Madagascar into a northward and a southward flowing branch. The current carries the 20 Sv (20 × 106 m3 s−1) of the southern branch southward along Madagascar as a swift, deep, and narrow boundary current. South of Madagascar some of this water moves westward to join the Agulhas Current, but most of it flows northward along the west coast of Madagascar to at least 15°S before also turning westward to join the Mozambique Current.
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easterly waveA migratory wavelike disturbance of the tropical easterlies. It is a wave within the broad easterly current and moves from east to west, generally more slowly than the current in which it is embedded. Although best described in terms of its wavelike characteristics in the wind field, it also consists of a weak trough of low pressure. Easterly waves do not extend across the equatorial trough. To the west of the trough line in an easterly wave over the ocean, there is generally found divergence, a shallow moist layer, and exceptionally fine weather. The moist layer rises rapidly near the trough line; in and to the east of the trough line intense convergence, much cloudiness, and heavy rain showers prevail. This asymmetric weather pattern may be greatly distorted by orographic and diurnal influences if the wave passes over land areas. Easterly waves occasionally intensify into tropical cyclones. Compare equatorial wave.
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ebb intervalThe interval in time between consecutive cycles of tidal ebbs. See also ebb current.
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ebb strengthThe magnitude (speed) of the ebb tide. See also ebb current.
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