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.

Mauna Kea, Hawaii's Second Giant

This is Mauna Kea, the second largest volcano in Hawaii. It is the only volcano which is glaciated, and it is not certain why. Also, this volcano is the second tallest one on the island, towering above even the great Mount Everest!

Its majestic height of 9km is astounding, since it began erupting on the seafloor 800,000 years ago.

Kilauea Killer Lava Lake

This is a picture of the lava in the volcano Kilauea. The pool of hot lava is actually known as a lava lake, inside the West Gap Crater of Kilauea. The whole crust covering the lake has been overturned, exposing the red hot lava inside.

Volcanoes of Hawaii

Hawaii is a big island which is totally made up of volcanoes. A few of them are called Kohala, Mauna Kea, Hualalai, Mauna Loa and Kilauea.

This majestic snow-capped Mauna Kea is in fact the second tallest volcano in Hawaii. Mauna Kea has erupted several times in the past 10,000 years, but the most recent eruption was 3,500 years ago. However, it is possible that it will erupt again some day.

Kohala is another volcano which might actually be extinct, since it has not erupted for 60, 000 years. It emerged from the sea 500, 000 years ago, but it is now slowly slowly sinking back into the sea. More than 200,000 years ago, a massive landslide occurred thus causing magnificent cliffs to form on the flanks of the volcano, and they can still be seen today.

Kilauea is one of the most active volcanoes in the world. Kilauea has continuous eruption during the 19th and 20th centuries and has had 34 eruption cycles since 1952. The last one started in 1983, and it continues even today. Also, it has no indication of stopping in the near future.

Hualalai's last eruption was between 1800 to 1801. This volcano is situated in the west of Hawaii. Houses, resorts, buildings and many people live near the flanks of Hualalai. Massive earthquakes hit in 1929, thus causing scientists to believe that an eruption will occur in the next 100 years.