A Conceptual Framework of Land Subsidence and Flood Assessment toward Hazard Management

Tallar, Robby Yussac (2023) A Conceptual Framework of Land Subsidence and Flood Assessment toward Hazard Management. Project Report. Universitas Kristen Maranatha. (Unpublished)

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Abstract

Following the controversy regarding the reclamation of Jakarta Bay in Indonesia, another embedded issue about land subsidence and flood also has become the major problem. As a metropolitan city, Jakarta City faced many unsustainable urban problems especially flood and land subsidence. Therefore, the primary goal of this paper is to contribute to a broader understanding in order to connect land subsidence, flood and some geotechnical strategies within and combined with enhanced polder system as the solution offered in this paper. The general methodological procedure to develop a conceptual framework of land subsidence and flood assessment has offered in this study. Once a conceptual framework system is established, supplementary indexes for specific purposes and location can be added. For one geotechnical project, particular important variables for certain geotechnical works are needed to be selected rather than using all variables to analyze. Therefore, this paper offered an Analytical Hierarchy Process (AHP) method to be performed. Combined with Geographic Information System (GIS), the thematic maps should be developed and layered from both land subsidence and flood digital map and then assigned weights on a certain scale depending on their contribution in order to create hazard potential zone. An increasing need for integrative assessment that measures the contribution of effects of the land subsidence and flood to the design of polder system has recently been recognized. This methodology developed in this work also emphasizes the simplicity and understandability as it must communicate to decision makers and the experts.

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Monograph (Project Report)

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