Annual Report of Asia & ASEAN Center for Educational Research

ISSN:2436-7109

Annual Report of Asia & ASEAN Center
for Educational Research

Spring 2023, Vol.3 No.1

Spring 2023,Vol.3 No.1
Asia & ASEAN Center for Educational Research
Faculty of Education, Chiba University

Contents
Greeting

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International Research Session
Purpose of the Research Presentation
Schedule
Members
Proceedings
High School Students
Postgraduate Students
Supplement

1233
60

SDGs Workshop
Purpose of the SDGs workshop
Schedule
Members
Poster

69
70
71
74

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Geospatial analysis of sea level rise in small island, Karimunjawa,Indonesia
Mulyadi Alwi
Faculty of Geography, Universitas Gadjah Mada, Indonesia
Purpose and Background
Many parties have expressed concern about climate change (Miller, 2020). This is due to the direct andindirect impacts caused by climate change in several regions of the world. One of the obvious impacts is sea
level rise. Based on satellite altimetry data (2023), global average sea level is increasing at a rate of 3.56 mm
per year. Lately, this phenomenon has had an impact on several regions in Indonesia, especially in coastal areas.
For example, a mosque in Jakarta, settlements in West Java, and a school in Central Java were all submerged(Fig. 1).
abc

Fig. 1 a Mosque; b settlements; and c school in northern Java. Sources: Trans7 Official (2019); Watchdoc (2021).

In addition, there are around 17,000 islands in Indonesia, and many of them are classified as small
islands because their area is less than 2,000 square kilometers (Mutaqin et al., 2022). Some of these islands
are important for regional development, for example Cemara Besar is important for tourism in Karimunjawa
because it has become a local and international tourist destination. Furthermore, this island has been a nationalpark since 1999. Therefore, multi-hazard mapping to identify the derivative effects of climate change and sea
level rise is important as part of coastal management.
Materials and Methods
The Coastal Hazard Wheel (CHW) method is used in this study, along with several parameters suchas geological layout, wave exposure, tidal range, flora/fauna, sediment balance, and storm climate (Appelquistet al., 2016). UAV data and georeferenced points are used as input data to produce the DEM and orthoimages.
The orthoimages are then processed using ArcGIS software to generate shoreline data. Following that, theshoreline data is divided into segments with a maximum length of 200 m. Afterwards, each segment is filledwith parameter data. The geological layout data comes from the DEM, while the rest comes from CHWclassification system. All the parameter information of each segment is then compared to the CHW to identify
multi-hazard classes and suitable measures.
Results and Discussion
The results consist of five maps, including ecosystem disruption (Fig. 2a), gradual inundation (Fig.
2b), salt water intrusion (Fig. 2c), erosion (Fig. 2d), and flooding (Fig. 2e). The maps show that all of thecoasts in Cemara Besar have a very high level of ecosystem disruption, salt water intrusion, and flooding
hazards, while there are two levels for gradual inundation and erosion that are high and very high. The highlevel is located in the northern and eastern parts of Cemara Besar because these areas are relatively protected.
Later, the high and very high levels of each hazard indicate that these areas need several kinds of suitablemeasures. According to Appelquist et al., (2016), there are several measures suitable for this level of ecosystem
disruption, i.e. coastal zoning, ecosystem based management, groundwater management, and wetland
restoration. For gradual inundation, those are beach nourishment, coastal setbacks, coastal zoning, dikes,
flooding proofing, managed realignment, and wetland restoration. Later, for salt water intrusion, those arecoastal zoning, dikes, groundwater management, and wetland restoration. Also, for erosion, there are beachnourishment, breakwaters, coastal setbacks, coastal zoning, groynes, managed realignment, revetments, sea
walls, and wetland restoration. Finally, for flooding, there are coastal setbacks, coastal zoning, dikes, floodmapping, flood proofing, flood shelters, flood warning systems, managed realignment, tsunami warning
system, and wetland restoration.
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Fig. 2 Multi-hazard maps of Cemara Besar island: a ecosystem disruption; b gradual inundation; c salt waterintrusion; d erosion; and e flooding.

REFERENCES
Aviso+
Satellite
AltimetryData.
(2023,January14).
Mean
Sea
Level.
https://www.aviso.altimetry.fr/en/data/products/ocean-indicators-products/mean-sea-level.html
Appelquist, L. R., Balstrøm, T., Halsnaes Contributing Authors, K., Robert Nicholls, R. J., Linham, M. M.,
Spensley, J., Stronkhorst, J., Koefoed Bjørnsen, P., James Lloyd, G., Jeppesen, G., Vestergaard, O.,
Aagaard, T., Al-Zu, I., Tutu Benefor, D., Deenapanray, S., Firmian, I., Kidde-Hansen, I., De Lopez, T.,
Mangor, K., … Salman, R. A. (2016). Managing climate change hazards in coastal areas The Coastal
Hazard Wheel decision-support system Main manual Acknowledgements We would like to thank thefollowing for their valuable feedback and advice (3rd ed.).
Miller, T. (2020). The Effect of Sea Level Rise on Islands and Atolls. Encyclopedia of the World’s Biomes, 1,
76–82. https://doi.org/10.1016/b978-0-12-409548-9.12038-x
Mutaqin, B. W., Marfai, M. A., Handayani, W., Tyas, D. W., Alwi, M., Hilmansyah, A. A., Rosaji, F. S. C.,
Musthofa, A., Fahmi, M. S. I., & Isnain, M. N. (2022). Metode Deteksi Potensi Bencana Pulau-Pulau
Kecil (R. Delima & U. Prastya, Eds.). PT. Kanisius.
Trans7
Official.
(2019).
Sayung,Hidup
diTanahAbrasi.
https://www.youtube.com/watch?v=O1xgfAk18UY&t=24s
Watchdoc Documentary. (2021). Tenggelam dalam Diam. https://www.youtube.com/watch?v=v6hp3i2ydrI52

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