Natural Hazards in Sao Vicente (Cabo Verde)
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Abstract
São Vicente island (República de Cabo Verde) lies within the Sahelian zone and faces a number of natural hazards, of which the most significant ones are erosion and gully formation, desertification and flash flooding hazards. Based on examples, we set out to examine the main factors involved in the development of these natural hazards from a regional point of view, while simultaneously assessing the importance of anthropic action as a structural factor. The investigation of Lazareto’s gullies (located to the west of Mindelo) aimed to determine the main factors of the gullies formation. It also sought to demonstrate that the gullies’ formation is a reliable indicator of the high rates of erosion on a regional scale. The approach to the desertification hazards was based on farmers’ perception related to the evolution of agricultural production, strategies to mitigate drought and desertification issues, consequences and future prospects based on a set of interviews conducted in Ribeira da Vinha. Finally, the intense rainfall event that occurred on August 26, 2008 was analysed to identify the main vulnerability factors of the city in light of the flash flood hazard.
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References
Amaral, I. 1964. Santiago de Cabo Verde. A Terra e os Homens. Lisboa, Junta de Investigações do Ultramar, 444 p.
Andrade, D, Silva, J. 2017. Contributos para uma estrutura de ordenamento da cidade-ilha de Mindelo-S. Vicente (Contributions to a spatial planning structure of the city-island of Mindelo-S. Vicente) Revista de Geografia e Ordenamento do Território (GOT) 11, 7–31. DOI: 10.17127/got/2017.11.00110.17127/got/2017.11.001
Costa, F. 1996. Processos erosivos actuais na bacia da Ribeira Seca (Santiago Oriental – Cabo Verde), Garcia da Orta. Série de Geografia 15 (1), 29–34.
Desta, L., Adugna, B. 2012. A Field Guide on Gully Prevention and Control, Nile Basin Initiative Eastern Nile Subsidiary Action Program (ENSAP), Addis Ababa, Ethiopia, 67 p.
Ernst, R. E., Buchan, K. L. 2003. Recognizing mantle plumes in the geological record. Annu. Rev. Earth Planet. Sci. 31, 469–523. DOI: 10.1146/annurev.earth.31.100901.14550010.1146/annurev.earth.31.100901.145500
Ferreira, A. Baptista, I., Tavaes, J. 2013. A luta contra a desertificação em Cabo Verde. in Riscos Naturais, Antrópicos e Mistos, Book in tribute to Professor Fernando Rebelo, Coimbra, 697–712.
Ferreira, D. 1983. Étude de la convection au-dessus de l’atlantique tropical au large de l‘Afrique occidental. Course of physical geography action, Report no. 16, Lisbon, CEG, INIC, 37 p.
Hare, F. K., Warren, A., Maizels, J., Kates, R. W., Johnson, D. L., Haring, K. J., Garduño, M. 2012. Desertificação: causas e consequências, Calouste Gulbenkian Foundation, Lisbon, 677 p.
Holm, P., Grandvuinet, T., Friis, J., Wilson, J., Barker, A., Plesner, S. 2008. An 40Ar-39Ar study of the Cape Verde hot spot: Temporal evolution in a semistationary plate environment. Journal of Geo-physical Research: Solid Earth 113, B8. DOI: 10.1029/2007jb005339.10.1029/2007JB005339
INE-CV National Statistics Institute of Cape Verde
Lessard-Hébert, M., Goyette, G., Boutin, G. 2005. Investigação qualitativa. Fundamentos e práticas. Instituto Piaget, Coleção Epistemologia e Sociedade, Lisboa, 184 p. ISBN: 9789896591021
Martins, B., Rebelo, F. 2009. Desertificação, erosão e paisagem em São Vicente e Santo Antão (Cabo Verde). Territorium: Revista Portuguesa de riscos, prevenção e segurança 16, 71–80. DOI: 10.14195/1647-7723_16_710.14195/1647-7723_16_7
Monteiro, S. 2007. Riscos naturais e vulnerabilidades no concelho de Ribeira Grande – Ilha de Santo Antão – Cabo Verde. Master's dissertation, Coimbra.
O’Reilly, S.Y., Zhang, M., Griffin, W.L., Begg, G., Hronsky, J. 2009. Ultradeep continental roots and their oceanic remnants: A solution to the geochemical “mantle reservoir” problem?, Lithos 112, 1043−1054. DOI: 10.1016/j.lithos.2009.04.02810.1016/j.lithos.2009.04.028
PANA, 2004. Segundo Plano de Acção Nacional para o Ambiente 2004-2014, Ministry of Agriculture, Food and the Environment, Praia (Republic of Cape Verde) 218 p.
Patriat, L., Labails, C. 2006. Linking the Canary and Cape-Verde Hot-Spots, Northwest Africa. Marine Geophysical Researches 27 (3), 201−215. DOI: 10.1007/s11001-006-9000-710.1007/s11001-006-9000-7
Pereira, J. 2010. Concepção de uma estratégia de Geoconservação para Cabo Verde e sua aplicação à ilha de Santiago. PhD thesis. Minho University, 383 p.
Plesner, S., Holm, P., Wilson, J. 2002. 40Ar–39Ar geochronology of Santo Antão, Cape Verde Islands. Journal of Volcanology and Geothermal Research 120, 103−21. DOI: 10.1016/s0377-0273(02)00367-010.1016/S0377-0273(02)00367-0
Rebelo, F. 1999. Riscos de inundação rápida em Cabo Verde. Apontamentos de observação numa breve visita à Praia e ao Mindelo. Finisterra 34 (67-68), 47−55. Available at: http://revistas.rcaap.pt/finisterra/article/view/1684/137810.18055/Finis1684
Romariz, C., Serralheiro, A. 1967. Litofácies do arquipélago de Cabo Verde 1. Ilha de São Vicente. Garcia da Orta 15 (4), 535−544.
SEPA - Executive Secretariat for the Environment 2000a. National Action Plan to Combat Desertification (PAN-LCD). Ministry of Agriculture, Food and the Environment, Praia (Republic of Cape Verde).
SEPA - Executive Secretariat for the Environment 2000b. White Paper on the State of the Environment in Cape Verde. Ministry of Agriculture, Food and the Environment, Praia (Republic of Cape Verde).
SEPA - Executive Secretariat for the Environment 2000c. Planning and organisation of the natural resources of the Republic of Cape Verde. Cabo Verde Natura 2000. Ministry of Agriculture, Food and the Environment, Praia (Republic of Cape Verde).
Victória, S. 2013 Caracterização geológica e geotÉcnica das unidades litológicas da cidade da Praia (Santiago, Cabo Verde) (Geological and geotechnical characterization of lithological units in the city of Praia (Santiago, Cape Verde)). Doctoral Thesis, University of Coimbra, Portugal.
Warren, A., Maizels, J. 1992. Mudança ecológica e desertificação. In Desertificação: causas e consequências, Lisbon, Calouste Gulbenkian Foundation, 265−407.