Piton de la Fournaise Volcano on Reunion Island east of Madagascar ranks among the world’s most active volcanoes. In the spring of 2007, it lived up to its reputation by rumbling to life. According to the New Scientist blog, the volcano erupted for the second time in 2007 on March 31. Activity tapered off within several hours, but the volcano erupted again two days later.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this image of the volcano on April 5. This image shows the volcano releasing a plume of ash and/or steam that blows westward over the ocean, spreading out and mingling with clouds as it goes.
Piton de la Fournaise is a shield volcano. Formed from hardened lava, shield volcanoes have a flat shape resembling a soldier’s shield. The volcano has erupted more than 150 times since the 17th century, most of those eruptions producing lava flows.
Mouginis-Mark, P. (2001, January 31). Tracking a Volcano.NASA’s Earth Observatory. Accessed: April 5, 2007.
Concepción Volcano is one of the tallest and most active of Nicaragua’s volcanoes. The 1,610-meter (5,280-foot), cone-shaped volcano is the northern half of dumbbell-shaped Isla de Ometepe. To the northwest of the crater, a very faint plume (probably steam) creeps like fog down the mountain, blurring the sharp gullies that carve the volcano’s flanks.