Journal of Oceanography and Marine Research
Open Access
ISSN: 2572-3103
ISSN: 2572-3103
Maria Alejandra Cifuentes Ossa, Leidy Viviana Rosero Henao and John Josephraj Selvaraj
Universidad Nacional de Colombia, Colombia, South America
Posters & Accepted Abstracts: Oceanography
The study focused on identification of shoreline changes in the District of Buenaventura and the surrounding areas in the Colombian Pacific, a coast where the geomorphology includes beaches, cliffs, estuaries, deltas and marshes. Taking into account the importance of coastal management strategies in this region we studied the magnitude and tendency of changes in the shoreline. Multidate satellite Landsat imagery (1986, 2001 and 2015) were used to extract the shorelines. Shoreline changes were estimated by statistical methods like Net Shoreline Movement (SNM), End Point Rate (EPR), Linear Regression Rate (LRR), among others using DSAS (Digital Shoreline analysis System) developed by USGS. The 409km study area was divided into 5 zones, covering Landsat Path/Row 10/57 and 10/58. Preliminary results indicate that areas with more advanced processes of accretion correspond to zones near Pichima in the Department of Choc�?³ in the northern part and areas with most advanced processes of erosion are around the mouth of Charambir�?¡. In areas of Juanchaco, Buenaventura and Bahia Malaga bays, accretion or gain of land processes were identified. The analysis showed along the shoreline highest EPR of 47.68 m indicating accretion and a lowest EPR (-) 26.88 m indicating coastal erosion while some parts of the shoreline remain unchanged. This study was presented as an alternative analysis that aimed towards having coastal management strategies in this region.
Email: macifuenteso@unal.edu.co