Abstract
This research aims to explore tsunami-prone areas in the Bacan and South Bacan districts of South Halmahera Regency. The findings of this research are planned to assist all stakeholders, particularly in developing disaster risk assessment sheets. To estimate the tsunami hazard map, the susceptibility of the elevation, slope, river distance, and coastal distance was collected. Overlaying thematic maps were used assisted by GIS software. The result shows that the low and very low tsunami vulnerability areas were safe from tsunami inundation predominate in the Eastern part and Northern part of the study area while the area designated as very vulnerable covered 157,10 hectares. These locations may have sustained the most damage from a tsunami catastrophe due to their proximity to the sea, low terrain and slope, and dense population. In consideration of the tsunami disasters in Aceh, we anticipate that tsunami risk maps will support in the initiation of humanitarian and development activities in North Maluku Province.
Highlights
The tsunami disaster can cause negative impact, both property and life [1], and have an impact on the environment and people's lives [2]; health [3]
According to [5] about 67% of tsunamis in Indonesia occurred in eastern Indonesia which were spread evenly from Sulawesi to Papua and from Timor to the Sangihe Talaud islands where during the period between 1600 and 2004 there were approximately 109 tsunamis in Eastern Indonesia
Another research conducted by [8] about Marine Geological Hazard in Northern Part of Obi Island, Molucca found that the research area is an area that has experienced a tsunami disaster, the closest to the research site is the tsunami around Halmahera in 1994 caused by an earthquake with a magnitude of 6.8 Mw, water level reaches 3 m in Obi Island
Summary
The tsunami disaster can cause negative impact, both property and life [1], and have an impact on the environment and people's lives [2]; health [3]. Even though the earthquake had not yet caused a tsunami, it caused people to panic and scatter out of their homes This shows that there is no tsunami risk assessment that has been prepared at the village level. In this condition, the role of all elements of society and stakeholders is tsunami studies in the northern Maluku region are still very limited. Some that have been carried out, for example, a tsunami hazard study in the North Maluku region has been carried out by [6] on Mapping of Tsunami Vulnerability and Coastline Changes in Small Islands (Case Study: Small Volcanic Island of Ternate) and [7] on mapping tsunami disaster risk in coastal areas of Weda Tengah sub-district, Central Halmahera Regency. Another research conducted by [8] about Marine Geological Hazard in Northern Part of Obi Island, Molucca found that the research area is an area that has experienced a tsunami disaster, the closest to the research site is the tsunami around Halmahera in 1994 caused by an earthquake with a magnitude of 6.8 Mw, water level (tsunami run-up) reaches 3 m in Obi Island
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