Assessment of Shoreline Changes in the Period 1969-2010 in Watamuarea, Kenya

Assessment of Shoreline Changes in the Period 1969-2010 in Watamuarea, Kenya

Fikir Alemayehu

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Onwonga Richard

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Mwangi James Kinyanjui

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Wasonga Oliver. V

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University of Nairobi

Assessment of Shoreline Changes in the Period 1969-2010 in Watamuarea, Kenya

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Abstract

Watamu coastlineis a major attraction site for tourist and also a source of income for the local people. However, the shoreline has been changing due to erosion. This study sought to find the trend of shoreline changes, and the factors attributed to the changes. Aerial photographs of 1969 and 1989 and a recent satellite image of 2010 wereused to digitize the shoreline.The Digital Shoreline Analysis System (DSAS) in ArcGIS environment was used to create transects and statistical analyses for the shoreline.Several GPS points were taken in October 2013 and 2014 during ground truthing following the High Water Mark (HWM). The 9.8 km long Watamu shoreline was divided in-to 245 transects with 40 meter spacing in order to calculate the change rates. The rates of shoreline change were calculated using the End Point Rate (EPR), Net Shoreline Movement (NSM), and Weighted Linear Regression (WLR) statistic in DSAS.

References

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Fikir Alemayehu. 2015. \u201cAssessment of Shoreline Changes in the Period 1969-2010 in Watamuarea, Kenya\u201d. Global Journal of Science Frontier Research - H: Environment & Environmental geology GJSFR-H Volume 14 (GJSFR Volume 14 Issue H6).

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GJSFR Volume 14 Issue H6

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords

aerial photographs arcgis coastline digital shoreline analysis system kenya satellite image shoreline erosion watamu

Submission ReceivedNovember 9, 2014
Peer Review Double Blind
Handling Editor
Accepted December 9, 2014
Published December 23, 2014

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v1.2

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January 19, 2015

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Article Matrices

Total Score: 104

Country: Kenya

Subject: Global Journal of Science Frontier Research - H: Environment & Environmental geology

Authors: Fikir Alemayehu, Onwonga Richard, Mwangi James Kinyanjui, Wasonga Oliver. V (PhD/Dr. count: 0)

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