Volcanic hazard knowledge and preparedness of small island community on the flank of Gamalama volcano Ternate Island–Indonesia

Hidayat, Agung; Hadmoko, Danang Sri; Marfai, Muh Aris; Mutaqin, Bachtiar Wahyu

doi:10.1007/s10708-022-10682-9

Cited by 2 publications

(4 citation statements)

References 33 publications

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“…In addition, research on the Gamalama volcano that has been carried out previously is in the form of case studies of the eruption that have occurred, the hazard and challenges of handling it [13,14], the community's preparedness and knowledge of the volcanic hazard [4], the reveal of its magmatic system [15], the planning of transportation infrastructure to support disaster mitigation [16] and a few others. However, the significance of the relationship between the repose period and the magnitude of the eruption, known as the volcanic explosivity index (VEI) is still very rarely studied, especially at Gamalama volcano, which has a relatively complete historical record as a study guide to provide helpful information for disaster mitigation efforts.…”

Section: International Journal Of Sustainable Development and Planningmentioning

confidence: 99%

“…Although the results of the correlation test concluded that there was no significant relationship between repose time and the VEI of Gamalama volcano, an interesting fact was found through the analysis of repose time on the impact of the eruption on humans, namely the existence of a pretty convincing relationship. A reasonably long repose period of 10-20 years is usually followed by eruptions that significantly impact human activities even with the VEI scale of 2, as in the case of eruptions in 1962, 1980, 2003, and 2011. In the case of Gamalama volcano eruptions, the VEI does not always correlate with the eruption's impact on humans because small VEI can still have a significant effect, as in the case of the 1980 and 2015 eruptions [4].…”

Section: Eruption Repose Time and Veimentioning

confidence: 99%

“…Ternate Island is a volcanic island with an area of 111 km 2 , located in the west of Halmahera Island in North Maluku Province, which was formed from the deposition of volcanic materials from the eruption of the Gamalama volcano [4]. Gradually, volcanic material in the form of lava or other large and heavy material settles around the crater; meanwhile, the lighter material is ejected or blown away by the wind.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the Relationship Between Repose Period and Eruption Magnitude of Gamalama Volcano for Community Preparedness in Ternate Island – Indonesia

Hidayat¹,

Suryanto²,

Utomowati³

et al. 2023

IJSDP

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Volcanic eruptions from Gamalama volcano often threaten Ternate Island, a small volcanic island with more than 200,000 inhabitants in North Maluku Province. Ternate Island has an area of 111.4 km 2 , and the distance between settlements and the crater ranges from 4-7 km. With those conditions, Ternate Island has become one of the areas in Indonesia with a high risk of volcanic hazards. As one of the efforts to reduce volcanic risk, it is essential to understand the characteristics of volcanoes, including the relationship between the repose period and the eruption magnitude. Historical data on the eruption of the Gamalama volcano from 1510-2018 were collected from various reliable sources and analyzed statistically to determine their relationship. The results show no significant relationship between the repose period and the magnitude of the eruption. The results also show that the eruption's average repose time from 1510-2018 is unreliable and cannot be generalized. However, one thing that is quite interesting to be studied further is related to the positive relationship between the length of the repose period and the impact of the resulting eruption. This incident was recorded in several eruptions at Gamalama volcano, such as in 1960Gamalama volcano, such as in , 1980Gamalama volcano, such as in , 2003Gamalama volcano, such as in , and 2011. These findings require people living on Ternate Island to increase their preparedness and practice in dealing with eruption disasters following the contingency plan from the disaster management authority.

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Section: International Journal Of Sustainable Development and Planningmentioning

confidence: 99%

Section: Eruption Repose Time and Veimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of the Relationship Between Repose Period and Eruption Magnitude of Gamalama Volcano for Community Preparedness in Ternate Island – Indonesia

Hidayat¹,

Suryanto²,

Utomowati³

et al. 2023

IJSDP

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“…Furthermore, very small islands are more vulnerable to disasters due to climate change (Koroy et al, 2017;Miller et al, 2020;Mutaqin et al, 2022;Mutaqin, Handayani, et al, 2021). This is due to the condition of very small islands, which tend to have narrow, isolated landmasses and relatively limited resources (Hidayat et al, 2023;Wilkinson et al, 2016). In addition, the relatively flat topography of the very small islands also makes this area somewhat prone to disasters (Handayani et al, 2022;Hidayat et al, 2023;Mutaqin et al, 2022;Mutaqin, Handayani, et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Shoreline Dynamics in the Very Small Islands of Karimunjawa – Indonesia: A Preliminary Study

Alwi,

Mutaqin,

Marfai

2023

Geoplanning J. Geomatics Plann.

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Indonesia is considered one of the biggest archipelagic countries in the world. According to some literature, Indonesia has more than 17,000 islands, most of which are classified as small islands. Some of these islands have become important areas for tourism, for instance, small islands in Karimunjawa. However, some of these islands experienced shoreline changes caused by erosion and accretion. Hence, this research aims to map the spatial distribution of shoreline change using the Digital Shoreline Analysis System (DSAS) add-in on ArcGIS. The primary dataset utilized as input consists of Sentinel 2A imagery captured over 2017 and 2022. The results showed that around 89 segments, or 51.47% of the total shoreline segments, tend to experience accretion, while the remaining 79 segments, or 45.93%, experience erosion. This finding suggests that most shoreline segments tend to accrete or seaward movement in the research area. The results of this study exhibit notable disparities when compared to the occurrences observed in Pandeglang (Banten), Kuwaru (Yogyakarta), Buleleng (Bali), and East Java Province, where coastal erosion prevails over accretion. The managers of the islands try to reduce the threat of erosion by constructing dykes and breakwaters. However, these buildings are ineffective due to the relatively simple structures and building materials. Therefore, further studies are needed to determine the type and specification of mitigation buildings that are suitable for implementation in that location.

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Volcanic hazard knowledge and preparedness of small island community on the flank of Gamalama volcano Ternate Island–Indonesia

Cited by 2 publications

References 33 publications

Assessment of the Relationship Between Repose Period and Eruption Magnitude of Gamalama Volcano for Community Preparedness in Ternate Island – Indonesia

Assessment of the Relationship Between Repose Period and Eruption Magnitude of Gamalama Volcano for Community Preparedness in Ternate Island – Indonesia

Shoreline Dynamics in the Very Small Islands of Karimunjawa – Indonesia: A Preliminary Study

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