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meri saheli magazine subscription This article was published in October NEW ISLAND IN PACIFIC OCEANAccording to NASAs Earth Observatory new island has formed in South Pacific after an underwater volcano near Tonga (Home Reef) erupted oozing lava and expelling steam and water above surface. o Home Reef is part of TongaKermadec subduction zone where three tectonic plates smash into each other and create an active area for undersea volcanoes. o New land mass has quickly grown from one to more than eight acres in size. o Earlier submarine volcanoes flared up in 1852 1857 1984 and 2006 producing new islands each time.About Islands created by underwater volcanic activity o Process of formation Volcanic islands originate from passive lava flows on seafloor.These passive flows harden into rock and build up the height of the underwater mountain over millions of years.Eventually some volcanoes reach heights above seafloor where lower pressure allows for explosive eruptions.Submarine volcanoes that do not reach sea level are called seamounts.According to NASA Islands created by underwater volcanic activity can exist for years though they typically dont last long. o Volcanic island ecosystem Because they evolve in an isolated environment many organisms are considered endemic species meri saheli magazine yearly subscription.

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