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Rough Appearance of Mauna Kea Volcano in Hawaii, USA – May 4th, 2011

19.8N 155.4W

May 4th, 2011 Category: Image of the day, Volcanoes

USA – April 28th, 2011

This orthorectified image shows the slopes of Mauna Kea, a dormant volcano on the island of Hawai`i. Standing 4205 m above sea level, its peak is the highest point in the state of Hawaii.

In its current post-shield state, its lava is more viscous, resulting in a steeper profile. Late volcanism has also given it a much rougher appearance than its neighboring volcanoes; contributing factors include the construction of cinder cones, the decentralization of its rift zones, the glaciation on its peak, and the weathering effects of the prevailing trade winds.

Volcanoes of Hawaii: Mauna Kea, Mauna Loa and Hualālai – December 14th, 2009

19.8N 155.6W

December 14th, 2009 Category: Image of the day, Volcanoes

USA - December 1st, 2009

USA - December 1st, 2009

The island of Hawaii is home to five volcanoes, three of which can be observed here in this orthorectified image. These are, clockwise from the upper right, Mauna Kea, Mauna Loa and Hualālai.

Mauna Kea is a dormant volcano in the post-shield stage of volcanic evolution. Its peak is 13,803 feet (4,207 m) above sea level but 33,476 feet (10,203 m) above its base on the floor of the Pacific Ocean, making it the world’s tallest mountain by this measure. The rounded formations on its flanks are various cinder cones.

Mauna Loa is an active shield volcano, with a volume estimated at approximately 18,000 cubic miles (75,000 km³). Its peak, with an elevation of 13,679 feet (4,169 m), is about 120 feet lower than that of Mauna Kea.

Hualālai is a dormant shield volcano with a peak at 8,271 feet (2,521 m) above sea level, much lower than those of Mauna Kea and Mauna Loa. Although Hualālai is not nearly as active as nearby Mauna Loa, geologic mapping of the volcano shows that 80 percent of Hualālai’s surface is covered by lava flows no older than about 5,000 years.

Mauna Kea Volcano, Hawaii, USA – December 16th, 2008

December 16th, 2008 Category: Image of the day, Volcanoes

Hawaii, USA - December 10th, 2008

Hawaii, USA - December 10th, 2008

Two of the Hawaiian Islands, Maui (left) and Hawaii (right) can be seen here.

Hawaii is a state in the United States, located on an archipelago in the central Pacific Ocean southwest of the continental United States, southeast of Japan, and northeast of Australia.

This state encompasses nearly the entire volcanic Hawaiian Island chain, which is made up of hundreds of islands spread over 1,500 miles (2,400 km).

Mauna Kea, identifiable as a dark brown circular area towards the northern coast Hawaii, is a dormant volcano. Pu’u Wekiu, one of numerous cinder cones on the summit plateau, is the highest point in the state of Hawaii at 13796 ft.

Mauna Kea is the tallest mountain in the world when measured from base to summit, since its base is located on the seafloor about 19000 ft beneath the surface of the Pacific Ocean, bringing its total height to about 33000 ft.

source Wikipedia

Mount Teide Volcano on Tenerife, Canary Islands – January 20th, 2012

28.2N 16.6W

January 20th, 2012 Category: Image of the day, Volcanoes

Tenerife - January 9th, 2012

This orthorectified image shows Tenerife, the largest and most populous island of the seven Canary Islands. It is a rugged and volcanic island sculpted by successive eruptions throughout its history. Tenerife is the largest island of the Canary Islands archipelago, with a surface area of 2,034.38 km2 (785 sq mi) and the longest coastline amounting to 342 km (213 mi).

In addition, the highest point, the volcano Mount Teide, with an elevation of 3,718 m (12,198 ft) above sea level is the highest point in all of Spain. It is the third highest volcano in the world measured from its base on the ocean floor, after Mauna Loa and Mauna Kea located in Hawaii.

Comparative Look at Hawaiian Volcanoes – February 16th, 2009

February 16th, 2009 Category: Image of the day, Volcanoes

Hawaii, USA - January 27th and February 9th, 2009

Hawaii, USA - January 27th and February 9th, 2009

These side-by-side MERIS (full resolution, left) and ASAR (radar, right) images make it possible to have a detailed, complete look at these Hawaiian volcanoes.

Mauna Loa, the large shield volcano below, and Mauna Kea, the tall post-shield volcano above, are two of the five volcanoes that form the island of Hawaii in the Pacific Ocean.

The color image makes it possible to observe the differences in landscape around the volcanoes. The summits of both volcanoes are capped with snow, and the area around them is dark brown, probably due to volcanic rock.

At low elevations, the eastern (windward) side of Mauna Loa often receives heavy rain and is in fact cloud-covered in the image. The rainfall supports extensive forestation, visible as bright green areas beneath the clouds. The western (leeward) side has a much drier climate and appears more brown.

Although the black and white image doesn’t make it possible to see changes in vegetation, it does allow a more precise view of the contours of the volcanoes and their calderas. Some towns are also visible as white dots on the volcanoes’ flanks.