Eventual changes in the coral coasts morphology and dynamic in the light of "global warming" concept

Abstract

variations. Global changes of nowadays manifest itself in climate warming, in sharp increasing of marine surface positive temperature anomalies, in sea level rise. The modern climatic conditions approach to a kind of climatic optimum like the middle Holocene optimum named "Atlantic period", when "Seboruko" terrace, consisted mainly of coral fragments, was formed. Probably, the sea level rise after reaching its extreme will decrease as it happened before. Like the several last analogous events, this phase could take one-two centenary. Corals undergo now strong temperature impact, which manifests in their decouloration. Sea level decrease even during short period may cause wide destruction of coral reef tops followed by intensive accumulation of carbon material on the seabed. In accordance with the regularities of the coastal dynamics this loose material will move to and along the coastline and form accumulative relief such as beaches and terraces. Being within geochemical sealand barrier in equator-tropical climate these landforms will undergo the intensive cementation processes. As a result new terrace will be formed like Late Holocene "Seboruko" terrace.