2332-2632-CoastalZone-2016_Posters-Accepted-Abstracts

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Coastal Zones 2016

May 16-18, 2016

Volume 4, Issue 1(Suppl)

Oceanography 2016

ISSN:2332-2632, OCN an open access journal

conferenceseries

.com

May 16-18, 2016 Osaka, Japan

Coastal Zones

International Conference on

Detection of shoreline changes in Buenaventura, Colombian Pacific using digital shoreline analysis system

Maria Alejandra Cifuentes Ossa

, Leidy Viviana Rosero Henao

and

John Josephraj Selvaraj

Universidad Nacional de Colombia, Colombia, South America

he 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 Chocó in the northern part and areas with

most advanced processes of erosion are around the mouth of Charambirá. 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.

Maria Alejandra Cifuentes Ossa et al., Oceanography 2016, 4:1(Suppl)