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(Unpublished)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