Hydrodynamics and Thermohaline Features of Reef Waters
37
Fig. 2.2. Vectors of currents on outer reef slope in the buttress zone. (Modified after
Roberts et al. 1975)
l0cmsec"
760
720
80
fO
Fig. 2.3. Pulses of current over the flat to the lagoon; V current velocity ; T time; (After
Roberts et al. 1983)
causing the formation of ridges and keys on the reef crest. The flows,
induced by waves on the flat, pass up it into the lagoeon, thus influencing
water circulation also in the lagoon . The debit of water into the lagoon
through the flat reachs 20-30% of total inflow at medium wave stress even
in such a semi-open atoll as the Bikini (von Arx 1848). At the Enivetok
atoll, which has two wide passes, nevertheless up to 80% of the water total
comes into the lagoon over the flat, driven by the wave stress. The tides,
being high enough there (l-l.Sm), provide anyway only 20% of the inflow
(Atkinson 1981).
37
Fig. 2.2. Vectors of currents on outer reef slope in the buttress zone. (Modified after
Roberts et al. 1975)
l0cmsec"
760
720
80
fO
Fig. 2.3. Pulses of current over the flat to the lagoon; V current velocity ; T time; (After
Roberts et al. 1983)
causing the formation of ridges and keys on the reef crest. The flows,
induced by waves on the flat, pass up it into the lagoeon, thus influencing
water circulation also in the lagoon . The debit of water into the lagoon
through the flat reachs 20-30% of total inflow at medium wave stress even
in such a semi-open atoll as the Bikini (von Arx 1848). At the Enivetok
atoll, which has two wide passes, nevertheless up to 80% of the water total
comes into the lagoon over the flat, driven by the wave stress. The tides,
being high enough there (l-l.Sm), provide anyway only 20% of the inflow
(Atkinson 1981).