Abstract
Tidal floods often occur in North Semarang Sub-District due to rising sea levels. One of the impacts is waste generation. Waste management is needed to prevent environmental degradation. An important factor is quantity of waste for the management plan. The purpose of this study to estimate waste generation from tidal floods. Scenario models are needed to find out the area affected because there is no existing data. Scenario data uses DEMNAS, land subsidence data, tidal data, and Sea Level Rise data. The Admiralty method is used to determine the Highest High Water Level (HHWL) value, the quantitative spatial method for the tidal flood scenario and the estimated quantity of waste. Calculation of the HHWL value of 1.16 m is added to the SLR data. The result of tidal flood height is 1.27 m. There are three affected villages (Panggung Lor, Bandarharjo, and Tanjungmas) and affected area is 55.95 Ha. The accuracy rate is 82.86% which is tested using Confusion Matrix. The results of the scenario model are arranged in a grid and then sampled. The estimated waste yield is 70,095.26 kg. The benefits of this data are to facilitate cleaning agent in waste management including cost and technical planning.
Highlights
Global warming is a serious problem that can increase the volume of global seawater and can encourage sea level rise by 0.5-2.3 m at the end of this century [1]
The consequence is that sea levels will increase in the future if they coincide with the phenomenon of land subsidence
Sea level rise can cause coastal areas to be vulnerable to inundation by tidal flooding and can result in environmental degradation [2, 3]
Summary
Global warming is a serious problem that can increase the volume of global seawater and can encourage sea level rise (sea level rise) by 0.5-2.3 m at the end of this century [1]. The Media of CNN Indonesia in May 2018 the DKI Jakarta Environment Agency transported about 50 tons of waste due to tidal flood on the Muara Angke coast to Bantar Gebang, Bekasi [14] This means that the phenomenon of tidal flooding has potential for waste generation. The impact of the tidal flood phenomenon in the North Semarang Sub-District of the coast has similarities as in the Muara Angke coast, one of which is the generation of waste In this region there has not been a study of estimation of the quantity so that it becomes an obstacle for the authorities in cleaning it. The fact is there is no estimation of the quantity of waste due to tidal data in North Semarang Sub-District This becomes important to do a study of estimation of waste generation due to tidal flood based on the scenario.
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