Eruption on Isla Fernandina
Credit: NASA, Posted on: Wednesday, 15 April 2009, 06:13 CDT Download full size image
In early April 2009, La Cumbre Volcano on Isla Fernandina in the Galapagos Islands erupted. On April 11, 2009, authorities at the Galapagos National Park reported that the volcano was releasing both lava flows and volcanic ash plumes. The same day, the U.S. Air Force Weather Agency reported that a volcanic ash plume extended approximately 150 kilometers (80 nautical miles) southwest of the volcano.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this image of the volcano on April 11, 2009. This true-color image shows Isla Fernandina and its neighbor, Isla Isabela. The red outline on Isla Fernandina is a hotspot where MODIS detected unusually hot surface temperatures. A bank of clouds encircles the northern and western part of the island; a volcanic plume—probably ash and steam—streams westward and spreads out over the ocean. The plume’s contours are more diffuse than the contours of nearby clouds.
Isla Fernandina supports wildlife that could be threatened by the April 2009 burst of volcanic activity, according to rangers at Galapagos National Park. As the island has no human residents, however, no settlements were endangered. Park rangers and a passing tourist boat initially observed the volcano at 10:00 p.m. local time on April 10, 2009. A sparse human population in the western reaches of the Galapagos Islands means that volcanic activity is not always observed or reported as soon as it starts. The seismic station at Puerto Ayora, on the nearby island of Santa Cruz, recorded no earthquakes associated with this eruption.
Isla Fernandina is a shield volcano with a low, broad shape that resembles an ancient warrior shield. This volcanic island has an elongated summit caldera roughly 5 kilometers by 6.5 kilometers (3 by 4 miles) wide, and fissures on the caldera’s outskirts have facilitated the volcano’s growth over time. Lava from the volcano has flowed both into the central caldera and toward the island’s shoreline.
More Images

360-degree Panorama of the Southern Sky.The Milky Way arches across this rare 360-degree panorama of the night sky above the Paranal platfor...
Recent Images
- 360-degree Panorama of the Southern Sky
- Pitted Layers Northeast of Hellas Region
- Spring Bloom and Dust off Argentina
- Shadows Side by Side
- Kasei Valles And Sacra Fossae, In Perspective
- Athabasca Oil Sands
- Successful Flight Through Enceladus Plume
- Chaotic Terrain Between Kasei Valles and Sacra Fossae
- Glacial Dust off Alaska
Latest Thoughts
-
Nov 9, 2009, 8:03 am
Getting the Most From Your Veggies
-
Nov 9, 2009, 7:52 am
Study: You May Have a 25% Chance of Catching Swine Flu
-
Nov 9, 2009, 7:36 am
BPA: What You Need to Know
-
Nov 9, 2009, 7:26 am
Medical School Enrollment Is Still Increasing
-
Nov 9, 2009, 6:45 am
Women Are Better Than Men At Preventing the Flu
-
Nov 8, 2009, 7:47 am
More Men Getting Cosmetic Surgery
- More Videos















RSS Feeds