Mapping coastal erosion at the Nile Delta western promontory using Landsat imagery

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

A set of six Landsat satellite images with 5-9 years apart was used in a post-classification analysis to map changes occurred at Rosetta promontory between 1973 and 2008 due to coastal erosion. Spectral information were extracted from two multi-spectral scanner (MSS) images (1973 and 1978), three thematic mapper (TM) images (1984, 1990, and 1999), and one enhanced thematic mapper plus (ETM+) image (2008). To estimate the quantity of land loss in terms of coastal erosion, a supervised classification scheme was applied to each image to highlight only two classes: seawater and land. The area of each class was then estimated from the number of pixels pertaining to this class in every image. In addition, the shoreline position was digitized to address retreat/advance pattern throughout the study period. Results showed that Rosetta promontory had lost 12. 29 km2 of land between 1973 and 2008 and the shoreline withdrew southward about 3. 5 km due to coastal erosion. Most land loss and shoreline retreat occurred between 1973 and 1978 (0. 55 km2/year and 132 m/year, respectively). Coastal protection structures were constructed successively at the promontory. These structures have considerably contributed to reduce coastal erosion; however, they promoted downdrift erosion.

Original languageEnglish
Pages (from-to)1117-1125
Number of pages9
JournalEnvironmental Earth Sciences
Volume64
Issue number4
DOIs
Publication statusPublished - Oct 2011

Fingerprint

coastal erosion
Landsat
Erosion
imagery
shoreline
Multispectral scanners
scanners
coastal protection
image classification
Seawater
seawater
pixel
Pixels
Satellites
erosion
land
shorelines

Keywords

  • Change detection
  • Coastal erosion
  • Remote sensing
  • Rosetta

ASJC Scopus subject areas

  • Global and Planetary Change
  • Environmental Chemistry
  • Water Science and Technology
  • Soil Science
  • Pollution
  • Geology
  • Earth-Surface Processes

Cite this

Mapping coastal erosion at the Nile Delta western promontory using Landsat imagery. / Hereher, Mohamed E.

In: Environmental Earth Sciences, Vol. 64, No. 4, 10.2011, p. 1117-1125.

Research output: Contribution to journalArticle

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