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Coastal areas have been the target of rapid urban development in most large cities in Indonesia. Makassar City, the capital city of the South Sulawesi Province, is undeniably a fast growing city both economically and spatially. Especially the western coast of this city is rapidly growing in the form of coastal reclamation to accommodate the extension of settlement. This situation will continue in association with the social needs pursuing development to have better living conditions. As the number of population increases, industries have been triggered to provide new open areas for business and construction, and this situation inevitably demands spaces. Unfortunately the purposes of spatial planning of the city have not always been followed by the actual situations of spatial development. The coastline has changed drastically, with concentrated changes being observed along the coastline of Makassar beach such as at Tanjung Bayam and Losari Beach. In this study, we use Landsat satellite images acquired from 1990 to 2010 and Ikonos high-resolution, time-series images to monitor the coastline changes of the city. The interpretation is validated with the ground observations in survey campaigns conducted in some of the target areas. The temporal changes seen in the satellite time series are evaluated using newly developed software appropriate for raster images. The result of the present study strongly suggests that the human activity and coastal physical aspects are influencing the geomorphological changes in this city especially along the coastline of the city. This study is expected to contribute in the future city planning of Makassar when considering which areas to be developed for what purposes with better prioritization.

Coastal morphodynamic The research was carried out on the coastal of Jeneberang estuary, to understand the coastal morphodynamic based on sediment backshore. Location of the research is along the coastal from Barombong Beach in south to the Tanjung Bunga Beach the north about 8.5 km length. The research method is drilling at Barombong Beach, Tanjung Bayang Beach, Tanjung Merdeka Beach, and Tanjung Bunga Beach about 10 meters ??? 11 meters depths..The sediment of core drilling were analyzed sedimentary texture, structures and compositions. Data of sediment backshore was correlated. Based on the analyzed of core drilling, the backshore sediment on the study area consist of sands, silts, clays, clay and sand with organic matter content. Sediment backshore at Barombong Beach shows a model of marine sediment, while at Tanjung Bayang Beach, Tanjung Medeka Beach, and Tanjung Bunga Beach show a model of fluviatil delta sediment.. These sediments consist of delta plain sediment, delta front sediment, beach sand sediment, and foreshore sediment. The Barombong Beach is a stable coast, however others are unstable coasts.