GEOLOGICAL-GEOMORPHOLOGICAL CHARACTERIZATION OF THE CUBAN COASTAL AREA AND VULNERABILITY TO SEA LEVEL RISE
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Abstract
The geologic-geomorphological characterization of the Cuban coastal zone was carried out to establish the Baseline of the geoenvironmental state; to identify the acting factors and processes; to study the morphodynamic evolution by coastal tra-mos and to obtain variables for the determination of the Coastal Vulnerability Index (IVC). The following were carried out: mapping of the types of coastline; multitemporal analysis of the coastline using aerial photographs and satellite images from different periods; field survey and processing of the required information and calculation of the CVI based on six variables (four geological-geomorphological and two meteorological). The graphic outputs were: a 1:25,000 scale map of the types and subtypes of coastline according to Decree Law 212/2000 for the Management of the Coastal Zone; a 1:25,000 scale cartographic representation of the net movement of the coastline with eroded and accreted areas in 28 windows or sectors, associated with population centers or economic objectives; a 1:100,000 scale Marine Abrasion Resistance map of the Coastal Zone; and CVI mapping at a 1:25,000 scale for 20 of the sectors. The conclusions highlight the wide predominance of the coastline classified as low mangrove; the prevalence of erosion over accretion in most of the sectors analyzed and the constitution of rocks and deposits that are not resistant to marine abrasion in more than three quarters of the coasts of the archipelago.
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