Tidal Flood Analysis Based on Tidal Conditions and Meteorological Parameters in Banjarmasin City
P L Sabrina (a*), I Ardiansyah (b), R Fauzy (a)

a) Meteorology Study Program, State College of Meteorology, Climatology, and Geophysics , South Tangerang, Banten
*purwantilelly.work[at]gmail.com , purwantilelly.work[at]stmkg.ac.id

b) The National Agency for Disaster Countermeasure, East Jakarta, Jakarta

Abstract

Banjarmasin City is the capital of South Kalimantan Province which has a high risk of hydro-meteorological disasters in the form of droughts and floods. The flood disaster in Banjarmasin City can be caused by high rainfall and many rivers. In addition, tidal floods influenced by tides and other atmospheric conditions, also occur in Banjarmasin. Based on previous studies, tidal flooding was also affected by the geographical conditions of the City of Banjarmasin, which is a swamp with the topography of 0.16 m below sea level. This study will analyze the influence of tides and atmospheric conditions on tidal flooding in Banjarmasin. The method used is descriptive quantitatively using Delft 3D modeling to view tidal elevation parameters and using observation data from the Meteorology, Climatology and Geophysics Agency (BMKG) to analyze meteorological parameters. The Delft 3D model was simulated using two cases, namely tidal floods in 2021 and 2022. Verification compares the tidal elevation pattern of the model results with Geospatial Information Agency (BIG) data. In addition, statistical verification was also carried out in this study to determine the model^s error rate on the observation data.

Keywords: Tidal flood, tides, meteorological conditions, Delft 3D model

Topic: Ocean-Atmosphere Dynamics