Underwater Volcano Eruption

http://www.youtube.com/watch?v=U51cY6iod3U&feature=related shows a rather rare and amazing video of an underwater volcano erupting.

COOL VOLCANO ERUPTION IN HAWAII

http://www.youtube.com/watch?v=2TVLUBRfHgM&feature=fvsr to see an awesome video clip of lava spewing out from a volcano in Hawaii!! Some see it as a deadly natural disaster whereas others think of it as beautiful. What do you think?

The Old Volcano: Kohala

Kohala Volcano is the oldest of Hawaii's five volcanoes and probably emerged above sea level more than 500,000 years ago. Toward the end of its shield-building stage 250,000 to 300,000 years ago, an enormous landslide removed the volcano's northeast flank. Twenty kilometers wide at the shoreline, the landslide cut back to the summit of the volcano, which at the time was just over 1,000 m higher than today, and traveled 130 km across the ocean floor. The famous sea cliffs of the Kohala shoreline mark the topmost part of the headwall of this ancient landslide.

Lava that flowed from Mauna Kea and Mauna Loa buried the southern flank of Kohala.

Underwater Rock: Loihi Seamount

Loihi Seamount is an active volcano built on the seafloor south of Kilauea, another volcano about 30 km from shore. The seamount rises to 969 m below sea level and generates frequent earthquake swarms, the most intense of which occurred in 1996. An eruption at Lo`ihi has not been observed yet, but scientists from the University of Hawaii have recently made many submersible dives to the volcano and deployed instruments on its summit to study Loihi in much greater detail. This volcano is rather special as it is underwater, unlike many other volcanoes such as Mauna Loa or Hualalai.

Hazardous Volcano: Haleakala (East Maui)

East Maui's long eruptive history and recent activity indicate that the volcano will erupt in the future. The oldest lava flow exposed on East Maui is about 1.1 million years in age. It is part of a sequence of flows emplaced near the end of shield building on East Maui. The time estimated to build a volcano from ocean floor to the end of its shield-building stage is thought by some scientists to be about 0.6 million years. East Maui volcano probably began its growth about 2.0 million years ago. East Maui, or Haleakala, is considered a hazardous volcano as a volcanic line of vents is the zone of greatest hazard for future lava flows and cindery ash. Many people believe that this volcano is definitely going to erupt again soon.

Hawaii's Active Dinosaur Volcano: Mauna Loa

Mauna Loa is among Earth's most active volcanoes, having erupted 33 times since its first well-documented historical eruption in 1843. Its most recent eruption was in 1984. Mauna Loa is certain to erupt again, and scientists carefully monitor the volcano for signs of unrest. This gigantic volcano is so large that it takes up 85% of all the Hawaii islands combined, and by itself takes up half the island of Hawaii! That is certainly a huge dinosaur number! It towers higher than any other mountain and volcano, standing at an astounding height of 17km above its base! The term Mauna Loa also means "Long Mountain" in English.

Hualalai's Energy

This is Hualalai, a volcano in Hawaii which has not erupted for a very long time. Scientists believe that the energy vreated by Hualalai can be used as a geothermal supply for the west side of Hawaii.