João Valente

The reef ( Portuguese , recife ' ) João Valente , also João Leitão or Leton Rock , is located between the Cape Verde islands of Boavista (about 20 nautical miles away) and Maio (about 25 nautical miles away). The north-south about 15 nautical miles long and 9 nautical miles wide coral reef is located on an undersea land ridge that is about 100 meters below sea level and which in turn rises above the sea bed about 1000 meters deep. The flat summit of this seamount is 14 meters below sea level and is probably a former volcanic island ( Guyot ) that was abraded by erosion . Strong surf forms even with moderate winds. When the tide is low, the reef is partially visible on the surface. It was the doom of the English ship "The Lady Burgess", which sank there on April 20, 1806. The high biodiversity of fish species that João Valente has like many other deep-sea mountains has been the subject of scientific studies of the ichthyofauna since 1981 .

Web links

Diving Joao Valente sea mount with Scubacaribe Cape Verde. Diving video. In: Youtube , July 3, 2014.

supporting documents

^ ^A ^b German Hydrographic Institute (ed.): Handbook of the North Atlantic Islands. 2nd Edition. Issue 30, July 28, 1934, p. 218.

↑ Pedro Monteiro, Daniel Ribeiro, José A. Silva, João Bispo, Jorge MS Gonçalves: Ichthyofauna Assemblages from Two Unexplored Atlantic Seamounts. Northwest Bank and João Valente Bank (Cape Verde Archipelago). In: Scientia Marina. ISSN 0214-8358 , Vol. 72, 2008, No. 1, pp. 133-143, here p. 138.

^ Ricardo AS Ramalho: Building the Cape Verde Islands. Springer, Berlin 2011, ISBN 978-3-642-19102-2 , doi : 10.1007 / 978-3-642-19103-9 , p. 14 .

↑ Without mentioning this riff, see The Lady Burgess, 1806 (VAL-002). Wreckage History. ( Memento of September 28, 2014 in the Internet Archive ) In: Arqueonautas Worldwide (website).

↑ Jorge MS Gonçalves et al .: Underwater Surveys of Ichthyofauna from João Valente Coastal Seamount and Boavista Island (Cape Verde). ( Memento of the original from July 20, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Poster presentation. In: AtlanticoSelvagem.org . In more detail: Pedro Monteiro, Daniel Ribeiro, José A. Silva, João Bispo, Jorge MS Gonçalves: Ichthyofauna Assemblages from Two Unexplored Atlantic Seamounts. Northwest Bank and João Valente Bank (Cape Verde Archipelago). In: Scientia Marina. ISSN 0214-8358 , Vol. 72, 2008, No. 1, pp. 133-143. @1@ 2

15.74071025 -23.090515138889Coordinates: 15 ° 44 '26.6 " N , 23 ° 5' 25.9" W.

[inseln-1] A ^b German Hydrographic Institute (ed.): Handbook of the North Atlantic Islands. 2nd Edition. Issue 30, July 28, 1934, p. 218.

[2] Pedro Monteiro, Daniel Ribeiro, José A. Silva, João Bispo, Jorge MS Gonçalves: Ichthyofauna Assemblages from Two Unexplored Atlantic Seamounts. Northwest Bank and João Valente Bank (Cape Verde Archipelago). In: Scientia Marina. ISSN 0214-8358 , Vol. 72, 2008, No. 1, pp. 133-143, here p. 138.

[3] Ricardo AS Ramalho: Building the Cape Verde Islands. Springer, Berlin 2011, ISBN 978-3-642-19102-2 , doi : 10.1007 / 978-3-642-19103-9 , p. 14 .

[4] Without mentioning this riff, see The Lady Burgess, 1806 (VAL-002). Wreckage History. ( Memento of September 28, 2014 in the Internet Archive ) In: Arqueonautas Worldwide (website).