Wikipedia

Graham Island (Mediterranean Sea)

"Ferdinandea" redirects here. For the insect genus, see Ferdinandea (fly).

Graham Island or Isola Ferdinandea (also Graham Bank, Graham Shoal, French: Île Julia) was an island in the Mediterranean Sea near Sicily that has, on more than one occasion, risen above the surface of the Mediterranean via volcanic action and soon thereafter been washed away. Since 300 BC this cycle of events has occurred four times.[4] The island was part of the submarine volcano Empedocles, 30 km (19 mi) south of Sicily, which is one of a number of underwater volcanoes known as the Campi Flegrei del Mar di Sicilia.

Graham Island
Isola Ferdinandea (Italian)
Ile Julia (French)
Approximate location of Graham Island
Summit depthRoughly 8 m (26 ft)[1]
Height63 m (207 ft) (maximum)[2]
Summit areaCampi Flegrei del Mar di Sicilia (Phlegraean Fields of the Sea of Sicily)[3]
Location
LocationBetween Sicily and Tunisia
Coordinates37°10′N 12°43′E / 37.167°N 12.717°E / 37.167; 12.717
Geology
TypeSubmarine volcano
Last eruption1863

Seamount eruptions have raised the island above sea level several times before erosion submerged it again. The island's most recent "appearance" occurred in July 1831, but then by January 1832 the portion of the island above sea level had been entirely washed away again by the wind and the waves of the Mediterranean Sea. During the brief six-month lifespan of the island, a four-way dispute over the island's sovereignty arose, which was still unresolved when the island again disappeared beneath the waves.

The island is still referenced on marine charts, as its top is only 6 metres (20 feet) short of breaking the surface, it thus becomes a potentially dangerous hidden obstacle for many seafaring vessels whose keels most often run deeper than this.[5] It is also a small shoal on which near-surface maritime creatures dwell.

History

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Early history

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Volcanic activity at Graham Island was first recorded during the First Punic War during the 3rd century BC. The island is believed to have appeared and disappeared four or five times since then.[6] Several eruptions have been reported since the 17th century AD.[7] The island is located in a volcanic area known as the Campi Flegrei del Mar di Sicilia (Phlegraean Fields of the Sea of Sicily), in between Sicily and Tunisia in the Mediterranean Sea. Many submarine volcanoes (seamounts) exist in the region, as well as some volcanic islands such as Pantelleria.

1831 appearance

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Graham Island guarded by HMS Melville

Graham Island's most recent appearance as an island was in July 1831.[8] The first reports of high seismic activity and/or eruptions occurred during a period spanning from 28 June to 10 July 1831. These reports came from the nearby town of Sciacca.[2] On 28 June, the Royal Navy ships Britannia and Rapid were shaken by an earthquake between Sciacca and Pantelleria.[9] On 4 July an odour of sulfur spread through the town reportedly in such quantities that it blackened silver.[2] On 12 July, Ferdinando Caronna, captain of the Psyche from Naples, reported seeing smoke coming out of the sea.[9] On 13 July, a column of smoke was clearly seen from St. Domenico. The residents believed it to be a ferry on fire.[2] On the same day, the brig Gustavo passed through the area, confirming a bubbling in the sea that the captain thought was a sea monster. Another ship reported dead fish floating in the water.[9]

By 17 July, a fully grown islet had formed enough to where Sicilian customs official Michele Fiorini was able to land there and to claim the island for the Kingdom of Sicily.[2][10] He planted an oar there to claim the newly emerged island for the Kingdom of the Two Sicilies.[10]

The eruptions of 1831 resulted in the island increasing in size to about (1+1⁄2 sq mi). At its maximum (in July and August 1831), it was 4,800 m (15,700 ft) in circumference and 63 m (207 ft) in height. It sported two small lakes, the larger of which was 20 metres (66 ft) in circumference and 2 m (6 ft 7 in) in depth.[2]

In the months ahead, Graham Island eventually became the subject of a four-way dispute over its sovereignty:

Diplomatic disputes over the island's status ensued.[9] Some observers at the time wondered if a chain of mountains would spring up, linking Sicily to Tunisia and thus upsetting the geopolitics of the region.[12] During the island's brief lifespan tourists began to travel to the island to see its two small lakes.

None of these ideas came to fruition, however, as the island soon sank back beneath the waters. The island was composed of loose tephra, easily eroded by wave action, and when the eruptive episode ended it rapidly subsided, disappearing beneath the waves in January 1832, before the issue of its sovereignty could be resolved. By 17 December 1831, officials reported no trace of it. As dynamically as the seamount appeared, it disappeared, defusing the conflict with it.[13]

In August 1831, observers around the world reported a discolored sun in the sky, tinted blue, purple, or green. Researchers have attempted to discover what volcanic activity was responsible for the stratospheric discharge that caused the discoloration, with an early consensus that Babuyan Claro in the Philippines was the most likely source. But later research has concluded there was no 1831 eruption at Babuyan Claro,[14] and some have argued the smaller activity at Graham was the likely culprit.[15] Nat Turner, an enslaved preacher in Southampton County, Virginia, took the bluish-green sun as a divine sign to begin what became known as Nat Turner's slave rebellion, which ended with the deaths of more than 200 people and led to new laws across the South further restricting the liberties of slaves, including banning their education and limiting their religious freedom.[16]

Recent seismic activity

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A seismograph, placed on the former island in 2006, is recovered in 2007

Fresh eruptions in 1863 caused the island to reappear briefly before again sinking below sea level.[2] After 1863, the volcano lay dormant for many decades, its summit just 8 m (26 ft) below sea level.

In 2000, renewed seismic activity around Graham Island led volcanologists to speculate that a new eruptive episode could be imminent, and the seamount might once again become an island.[17] In November 2002 the Institute of Geophysics and Volcanology in Rome observed minor seismic activity and gas emissions.[13] They put the time of resurfacing at a couple of weeks or months. Italian sailors put an Italian flag on the top of the bank to avoid other nations' claims if the former island resurfaced. Despite showing signs in both 2000 and 2002, the seismicity did not lead to volcanic eruptions and as of 2000 Graham's summit remains about 8 metres (26 ft) below sea level.[1]

To forestall a renewal of the sovereignty disputes, in November 2000 Italian divers planted a Sicilian flag on the top of the volcano in advance of its expected resurfacing.[13] In a ceremony attended by Prince Carlo, Duke of Castro (a descendent of Ferdinand II) and his wife Princess Camilla, a marble plaque was lowered into the water, with Prince Carlo proclaiming that the island "will always be Sicilian".[17] The marble plaque, weighing 150 kg (330 lb), was inscribed "This piece of land, once Ferdinandea, belonged and shall always belong to the Sicilian people."[5] Within six months, it had fractured into twelve pieces.[18]

Scientific study

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A page out of the field journal of French geologist Constant Prévost. Illustrations by a French artist.

The sudden geologic phenomenon was observed and studied by numerous scientists. Among the Germans were Hoffmann, Schultz, and Philippi. Among the English were Edward Davy and Warington Wilkinson Smyth.[18] Among the French was Constant Prévost, who visited the island with an artist, and presented his findings in the Bulletin de la Société Géologique de France.[19] Among the Italians was Scinà Domenico (1765–1837) who published his observations in the "Effeméridi Sicilians" (1832, vol. 2), and Carlo Gemmellaro (1787–1866), teacher of geology and mineralogy at Catania University, who published "Actions of the Gioenia Academy of Catania" (1831, vol.8).[2] In 2006, further study revealed Graham Island to be just one part of the larger volcanic cone Empedocles.[6]

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During its emergence it was visited by Sir Walter Scott, and it provided inspiration for James Fenimore Cooper's The Crater, or Vulcan's Peak, Alexandre Dumas, père's The Speronara, Jules Verne's Captain Antifer and The Survivors of the Chancellor and Terry Pratchett's Jingo.

The island was also the subject of an episode of Citation Needed, a panel show made and hosted by British content creator Tom Scott.

A number of Cinderella stamps and art coins have been issued over the years, under fictional names such as Poste Isola Ferdinandea.[20]

In 2000, an unofficial minting of a penny was produced by a Sicilian artist, featuring the former island on one side and, unusually, a bust of Elizabeth II on the other. David Mannucci, the designer of the coin, had the idea to produce it after he "found out the existence of the ghost island" from a newspaper article. Besides the copper piece, he minted varieties in silver, copper "with protective enamel", and in silver "with protective enamel". While this Italian-made coin fittingly bears the Italian name for the former island, the art coin also features a bust of "Elizabeth II D.G.R." and bears a British denomination.[21]

See also

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References

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  1. ^ a b c d Bird, Maryann (20 March 2000). "Fire from the Sea". Time. Retrieved 9 August 2023.
  2. ^ a b c d e f g h i "Ferdinandea - The Disappeared Isle". Almanacco Siciliano. Accessed 11 February 2009.
  3. ^ Hedervári, Peter (1984). Catalog of Submarine Volcanoes and Hydrological Phenomena Associated with Volcanic Events, 1500 B.C. to December 31, 1899 (Report). Boulder, Colorado: National Geophysical Data Center. p. A2.
  4. ^ "Volcanic Island Could Rise After 170 Years Under Sea". New York Times. Reuters. 2002-11-26. Retrieved 2021-07-10.
  5. ^ a b c George, Rose (26 September 2001). "The Island that Time Remembered". The Independent. Retrieved 9 August 2023.
  6. ^ a b Stewart, Phil (23 June 2006). "Scientists discover huge underwater volcano". Independent Online. South Africa. Retrieved 9 August 2023.
  7. ^ "Campi Flegrei Mar Sicilia". Global Volcanism Program. Smithsonian Institution. Retrieved 2018-01-04.
  8. ^ Reclus, Élisée (2023). The Earth: a Descriptive History of the Phenomena of the Life of the Globe. Frankfurt: Verlag. p. 495. ISBN 978-3-38212-029-0.
  9. ^ a b c d Gerkens, Jean-François (2022). "The Graham Island Case. Acquiring by Occupatio". Sartoniana (34): 83–104.
  10. ^ a b Gallo, Emanuela (2005-09-24). "Ferdinandea: L'isola che non c'è (Ferdinandea: The island that no longer exists)". Supereva. Archived from the original on 2021-07-09. Retrieved 2021-07-08. Historical description of brief appearance of island.
  11. ^ "Isla Ferdinandea | La guía de Geografía". geografia.laguia2000.com (in Spanish). Retrieved 2022-09-02.
  12. ^ Kozák, Jan; Cermák, Vladimir (2010). The Illustrated History of Natural Disasters. Dordrecht: Springer. p. 77. ISBN 978-9-04813-325-3.
  13. ^ a b c "Volcano may emerge from the sea". BBC News. 26 November 2002. Retrieved 9 August 2023.
  14. ^ Garrison, Christopher S.; Kilburn, Christopher R. J.; Edwards, Stephen J. (5 September 2018). "The 1831 eruption of Babuyan Claro that never happened: has the source of one of the largest volcanic climate forcing events of the nineteenth century been misattributed?". Journal of Applied Volcanology. 7 (1). Springer Science and Business Media LLC: 8. Bibcode:2018JApV....7....8G. doi:10.1186/s13617-018-0078-9. ISSN 2191-5040. S2CID 52222449.
  15. ^ Garrison, Christopher; Kilburn, Christopher; Smart, David; Edwards, Stephen (5 August 2021). "The blue suns of 1831: was the eruption of Ferdinandea, near Sicily, one of the largest volcanic climate forcing events of the nineteenth century?". Climate of the Past Discussions: 1–56. doi:10.5194/cp-2021-78. ISSN 1814-9324. S2CID 237525956. Retrieved 1 November 2021.
  16. ^ Gray-White, Deborah; Bay, Mia; Martin Jr, Waldo E. (2013). Freedom on my mind: A History of African Americans. New York: Bedford/St. Martin’s, 2013. p. 225.
  17. ^ a b Carroll, Rory (13 November 2000). "Bourbons surface to retake island". The Guardian. Retrieved 9 August 2023.
  18. ^ a b Nield, Ted (February 2003). "From out the azure main". Geoscientist. Geological Society of London. Retrieved 9 August 2023.
  19. ^ "Notes sur l'ile Julia pour servir a l'histoire de la formation des montagnes volcaniques" in Mémoires de la Soc. Géol. de France, 1835 ("L'exploration de île Julia" Archived 2006-05-01 at the Wayback Machine).
  20. ^ Stampboards. "Have you ever heard about "Poste Isola Ferdinandea"?". www.stampboards.com. Retrieved 2022-09-02.
  21. ^ "Tædivm - Ferdinandea". www.taedivm.org. Retrieved 2022-09-02.
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