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Niño Pinzón, Diana Carolina and Oviedo Barrero, Fernando (2018) Determination of the coastal morphological variation of the bay of Tumaco, from multi-temporal analysis with remote sensing Boletín Científico CIOH (36). pp. 71-86. ISSN 2215-9045. DOI https://doi.org/10.26640/22159045.439

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Abstract

From inputs obtained from remote sensors, a multitemporal analysis of the evolution of the coastal edge of Tumaco Bay has been carried out, in approximately 780 km. The analysis allowed to identify, describe, vectorize and evaluate the changes due to processes of erosion and accretion, and anthropic invasions, to which this coastal edge is subjected, in the south of the Colombian Pacific; using geographic information tools. As a complement, bibliographic information was obtained referring to the oceanic and atmospheric and geological conditions of the bay, allowing relating the influence of these parameters in the processes of erosion and accretion of it. Towards the north of the bay it was found the erosion processes predominate, towards the south the accretion of sediments predominates that gives rise to the formation of fluvio-marine plains and towards the center of the bay there are not so significant changes, showing a relative stability of the terrain. Of the total extension of the coastline of the bay, 24.18 % has been eroding, 31.14 % has accretion, 43.16 % has remained stable or has not undergone significant changes, in 1.52 % the intertidal spaces have been invaded with stilt houses as constructions and in some cases have been filled with different materials to raise the terrain and avoid flooding during high tide. With the delivery of these results, it is sought to generate a base line of research and generation of actions based on the need for detailed knowledge of the evolution of the coastline over time, offering elements of planning, environmental and territorial management of the Colombian Pacific coast.

Item Type: Article
Uncontrolled Keywords: Línea de costa. Borde costero. Sensores remotos. SIG. Erosión. Acreción. Litoral
Geographical coverage : Colombia. Tumaco. Francisco Pizarro
Depositing User: Dirección General Marítima
ISSN: 2215-9045
Identification Number: https://doi.org/10.26640/22159045.439

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