Fernandina Island

Fernandina Island (named after King Ferdinand of Spain, the sponsor of Christopher Columbus) (formerly known in English as Narborough Island, after John Narborough) is the third largest, and youngest, island of the Galápagos Islands, as well as the furthest west.[2] Like the others, the island was formed by the Galápagos hotspot. The island is an active shield volcano that has most recently been erupting since April 11, 2009.[3]

Fernandina Island
Fernandina Island
Geography
LocationGalápagos Islands, Ecuador
Coordinates0°22′S 91°33′W
ArchipelagoGalápagos Islands
Area642 km2 (248 sq mi)
Highest elevation1,476 m (4,843 ft)
Administration
Ecuador
ProvinceGalápagos
Fernandina
Fernandina Island (centre) and Isabela Island
Highest point
PeakShield Volcano
Elevation1,476 m (4,843 ft)
Listing
Coordinates0°22′S 91°33′W 
Geography
Geology
Mountain typeShield volcano
Last eruption16 June – 21 June 2018[1]

While anchored in Banks Bay, Captain Benjamin Morrell recorded one of the largest eruptions in Galápagos' history at Fernandina Volcano. His ship escaped to safety and his account of the event was preserved.

Fernandina has an area of 642 km2 (248 sq mi) and a height of 1,476 m (4,843 ft), with a summit caldera about 6.5 km (4.0 mi) wide. The caldera underwent a collapse in 1968, when parts of the caldera floor dropped 350 m (1,150 ft). A small lake has intermittently occupied the northern caldera floor, most recently in 1988.

Due to its recent volcanic activity, the island does not present much plant life and has a mostly rocky surface. Visitors to Fernandina Island will be taken to see only the outskirts of the crater for safety reasons. Two types of lava flow can be observed, ʻaʻā and pāhoehoe.

Flora and fauna

Punta Espinoza is a narrow stretch of land where hundreds of marine iguanas gather in large groups on black lava rocks. The famous flightless cormorant inhabits this island as well as penguins, pelicans and sea lions. The Narborough Island tortoise is a highly elusive species of Galápagos tortoise restricted to the island, thought likely extinct when no sighting had been made for 113 years after 1906, one old female being found in 2019.[4]

Mangrove forests are also found on the island.

April 2009 Eruption

The southern flank of the volcano La Cumbre had a fissure eruption that generated flows, which subsided within hours. Isla Fernandina supports wildlife that was threatened by the April 2009 burst of volcanic activity, according to rangers at Galápagos National Park. As the island has no human residents, 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 Galápagos 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.

La Cumbre volcano, viewed from the ISS, July 2002
Fernandina Island during the April 2009 eruption as seen from space. Isla Isabela can also be seen to the east (right).
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See also

References
  1. "Fernandina". Global Volcanism Program. Smithsonian Institution. Retrieved 2018-06-03.
  2. "Fernandina". Galapagos Conservancy. galapagos.org. Retrieved 6 June 2017.
  3. "Galapagos volcano erupts, could threaten wildlife". 2009-04-15. Archived from the original on 2009-04-15. Retrieved 2016-11-11.CS1 maint: BOT: original-url status unknown (link)
  4. "Giant tortoise believed extinct for 100 years found in Galápagos". The Guardian. 21 February 2019. Retrieved 21 February 2019.
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