Summary of Abstract Submission

Abstract Submission No. IO50-10-0003PresentationPoster

MARINE GIS FOR ASSESSMENT OF THE IMPACTS OF SEA LEVEL RISE IN MOZAMBIQUE

Aciano Lipangue*1

1 National Institute of Hydrography and Navigation, Mozambique

ABSTRACT :

Mozambique is potentially prone to the impacts of sea level rise as the largest cities extend north-south along the low-lands over the coastal regions. Moreover, the specific estimation of inundation impacts from projected rates of sea level rise has not yet produced due to the lack of comprehensive digital elevation maps for most of coastal cities. At present there are available three global digital elevation dataset with a near-global coverage, two obtained by the SRTM and ASTER stereo images and, lastly the GMTED2010, a new enhanced product to replace the GTOPO30. A study by Arefi and Reinartz (2011) suggest that the global digital elevation dataset (GDED) play an important role in the impacts coastal inundation. Nevertheless, the vertical accuracy of these GDED varies significantly depending on the land cover (Czubski et al. 2013). In addition, Dougherty (2012) compared the inundation areas derived from GDED and Lidar dataset in Lagos coastal State, Nigeria. The author found that the ASTER-30m and SRTM-90m elevations have underestimated the inundation areas. The main goal of this study is to assess the impacts of sea level rise for all over coastal cities of Mozambique. Due to limited availability of comprehensive digital elevation maps at high degree of resolution for most of coastal cities, was therefore performed a study to investigate whether global digital elevation data might be suitable to modelling the impacts of sea level rise on the coast of Mozambique. Thus, the three near-global coverage products, respectively ASTER, SRTM and GMTED2010 elevation datasets were simultaneously