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![Historical earthquake event (>M7) at North Sulawesi [10]](publication/354029382/figure/tbl1/AS:1058869941919745@1629465675652/Historical-earthquake-event-M7-at-North-Sulawesi-10_Q320.jpg)
On the 26th of August 2019, the Indonesian government announced the location of the new nation’s capital city. The plan to move the capital city raises various pros, cons, and several challenges, including those from natural disaster aspects. East Kalimantan’s coastal area faces the Makassar Strait waters which have the potential for tsunamis, eith...
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... worst earthquake magnitude that might generate tsunami from the North Sulawesi Megathrust (M8.5) [7] was applied for this tsunami simulation. The earthquake parameters (epicentre, magnitude, depth, focal mechanism, dimension, and dislocation) were used to generate the initial tsunami source, as presented in Table 2 [20,21,22]. The tsunami source consist of two faults with the highest elevation at the tsunami source is 2.4 meter ( Figure 2). ...Citations
... This subduction zone experiences continuous activity, where each tectonic plate keeps moving, resulting in the potential for deformation on the seafloor [17]. This study utilizes a potential magnitude of 8.5, which could generate a tsunami from the North Sulawesi Megathrust [18]. The fault dimensions are divided into 5 segments, and the detailed fault directions for each segment can be seen in Figure 3. ...
The Sulawesi region is prone to earthquakes due to the existence of a Subduction Zone which can generate a tsunami so that tsunami modeling is important as a tsunami mitigation effort in the future. The purpose of this research is to study the maximum earthquake potential in the Sulawesi Subduction Zone and to model the tsunami source with a multi-deformation scheme. The research method is a literature study using the 2017 National Earthquake Center book, tsunami modeling using an earthquake scenario with a magnitude of 8.5 Mw, a depth 20 Km, fault dimension modeling using global mapper software based on the Scaling law, fault dimensions with a length of the fault area and a width of the fault area, the earthquake parameters in the study consist of magnitude, epicentre depth, dip, slip, fault area length, the width of the fracture area and the dislocations . Tsunami source modeling uses the multi-fault. The results of this study are the maximum potential for an earthquake of around 8.5 Mw, the shape of the earthquake deformation and parameters as well as the tsunami source model that describes the sea level conditions experiencing an increase of 5,7 meters and for the decrease in sea level reaching -5.9 meters.
The Flores earthquake on December 14, 2021, was recorded to cause a weak tsunami in East Nusa Tenggara. The epicenter was in the Flores Sea within 10 km of the hypocenter that triggered M 7.3 and impacted some coastline regions of East Nusa Tenggara, including Labuan Bajo. This study aimed to hindcast this phenomenon and mitigate the coastline region by applying the forecasting scenarios related to the amplification of the earthquake magnitudes and type of the sub-bottom displacements. The TUNAMI Software has been selected to illustrate tsunami wave propagation and inundation. The elevation data for the inputting model used BATNAS-DEMNAS National, while the rest of the parameters were applied using the two scenarios and the best guess. Based on the model results, it can be concluded that the source characteristics and the magnitudes played an essential role in inundating the coastal region in Labuan Bajo, West Manggarai Regency, East Nusa Tenggara.
