Mapping Recent Shoreline Changes Spanning the Lateral Collapse of Anak Krakatau Volcano, Indonesia
We use satellite imagery to investigate the shoreline changes associated with volcanic activity in 2018−2019 at Anak Krakatau, Indonesia, spanning a major lateral collapse and period of regrowth through explosive activity. The shoreline changes have been analyzed and validated through the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/2/536 |
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| author | Alessandro Novellino Samantha L. Engwell Stephen Grebby Simon Day Michael Cassidy Amber Madden-Nadeau Sebastian Watt David Pyle Mirzam Abdurrachman Muhammad Edo Marshal Nurshal David R. Tappin Idham Andri Kurniawan James Hunt |
| author_facet | Alessandro Novellino Samantha L. Engwell Stephen Grebby Simon Day Michael Cassidy Amber Madden-Nadeau Sebastian Watt David Pyle Mirzam Abdurrachman Muhammad Edo Marshal Nurshal David R. Tappin Idham Andri Kurniawan James Hunt |
| author_sort | Alessandro Novellino |
| collection | DOAJ |
| description | We use satellite imagery to investigate the shoreline changes associated with volcanic activity in 2018−2019 at Anak Krakatau, Indonesia, spanning a major lateral collapse and period of regrowth through explosive activity. The shoreline changes have been analyzed and validated through the adaptation of an existing methodology based on Sentinel-2 multispectral imagery and developed on Google Earth Engine. This work tests the results of this method in a highly dynamic volcanic environment and validates them with manually digitized shorelines. The analysis shows that the size of the Anak Krakatau Island increased from 2.84 km<sup>2</sup> to 3.19 km<sup>2</sup> during 15 May 2018−1 November 2019 despite the loss of area in the 22 December 2018 lateral collapse. The lateral collapse reduced the island area to ~1.5 km<sup>2</sup> but this was followed by a rapid increase in area in the first two months of 2019, reaching up to 3.27 km<sup>2</sup>. This was followed by a period of little change as volcanic activity declined and then by a net decrease from May 2019 to 1 November 2019 that resulted from erosion on the SW side of the island. This history of post-collapse eruptive regrowth and coastal erosion derived from the shoreline changes illuminates the potential for satellite-based automated shoreline mapping to provide databases for monitoring remote island volcanoes. |
| first_indexed | 2024-12-21T21:23:11Z |
| format | Article |
| id | doaj.art-fd9a4b88a86143ba9df6e8990364a4dd |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-21T21:23:11Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-fd9a4b88a86143ba9df6e8990364a4dd2022-12-21T18:49:50ZengMDPI AGApplied Sciences2076-34172020-01-0110253610.3390/app10020536app10020536Mapping Recent Shoreline Changes Spanning the Lateral Collapse of Anak Krakatau Volcano, IndonesiaAlessandro Novellino0Samantha L. Engwell1Stephen Grebby2Simon Day3Michael Cassidy4Amber Madden-Nadeau5Sebastian Watt6David Pyle7Mirzam Abdurrachman8Muhammad Edo Marshal Nurshal9David R. Tappin10Idham Andri Kurniawan11James Hunt12British Geological Survey, Environmental Science Centre, Keyworth, Nottingham NG12 5GG, UKBritish Geological Survey, Environmental Science Centre, Keyworth, Nottingham NG12 5GG, UKNottingham Geospatial Institute, University of Nottingham, Nottingham NG7 2TU, UKDepartment of Earth Sciences, University College London, Gower Street, London WC1E 6BT, UKDepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UKDepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UKSchool of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UKDepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UKPetrology, Volcanology, and Geochemistry Research Group, Department of Geological Engineering, Bandung Institute of Technology, Bandung 40132, IndonesiaPetrology, Volcanology, and Geochemistry Research Group, Department of Geological Engineering, Bandung Institute of Technology, Bandung 40132, IndonesiaBritish Geological Survey, Environmental Science Centre, Keyworth, Nottingham NG12 5GG, UKPetrology, Volcanology, and Geochemistry Research Group, Department of Geological Engineering, Bandung Institute of Technology, Bandung 40132, IndonesiaNational Oceanography Centre, Waterfront Campus, University of Southampton, European Way, Southampton SO14 3ZH, UKWe use satellite imagery to investigate the shoreline changes associated with volcanic activity in 2018−2019 at Anak Krakatau, Indonesia, spanning a major lateral collapse and period of regrowth through explosive activity. The shoreline changes have been analyzed and validated through the adaptation of an existing methodology based on Sentinel-2 multispectral imagery and developed on Google Earth Engine. This work tests the results of this method in a highly dynamic volcanic environment and validates them with manually digitized shorelines. The analysis shows that the size of the Anak Krakatau Island increased from 2.84 km<sup>2</sup> to 3.19 km<sup>2</sup> during 15 May 2018−1 November 2019 despite the loss of area in the 22 December 2018 lateral collapse. The lateral collapse reduced the island area to ~1.5 km<sup>2</sup> but this was followed by a rapid increase in area in the first two months of 2019, reaching up to 3.27 km<sup>2</sup>. This was followed by a period of little change as volcanic activity declined and then by a net decrease from May 2019 to 1 November 2019 that resulted from erosion on the SW side of the island. This history of post-collapse eruptive regrowth and coastal erosion derived from the shoreline changes illuminates the potential for satellite-based automated shoreline mapping to provide databases for monitoring remote island volcanoes.https://www.mdpi.com/2076-3417/10/2/536sentinel-2shorelinegoogle earth enginecloud computingexplosive volcanismtsunami hazardsanak krakatau |
| spellingShingle | Alessandro Novellino Samantha L. Engwell Stephen Grebby Simon Day Michael Cassidy Amber Madden-Nadeau Sebastian Watt David Pyle Mirzam Abdurrachman Muhammad Edo Marshal Nurshal David R. Tappin Idham Andri Kurniawan James Hunt Mapping Recent Shoreline Changes Spanning the Lateral Collapse of Anak Krakatau Volcano, Indonesia Applied Sciences sentinel-2 shoreline google earth engine cloud computing explosive volcanism tsunami hazards anak krakatau |
| title | Mapping Recent Shoreline Changes Spanning the Lateral Collapse of Anak Krakatau Volcano, Indonesia |
| title_full | Mapping Recent Shoreline Changes Spanning the Lateral Collapse of Anak Krakatau Volcano, Indonesia |
| title_fullStr | Mapping Recent Shoreline Changes Spanning the Lateral Collapse of Anak Krakatau Volcano, Indonesia |
| title_full_unstemmed | Mapping Recent Shoreline Changes Spanning the Lateral Collapse of Anak Krakatau Volcano, Indonesia |
| title_short | Mapping Recent Shoreline Changes Spanning the Lateral Collapse of Anak Krakatau Volcano, Indonesia |
| title_sort | mapping recent shoreline changes spanning the lateral collapse of anak krakatau volcano indonesia |
| topic | sentinel-2 shoreline google earth engine cloud computing explosive volcanism tsunami hazards anak krakatau |
| url | https://www.mdpi.com/2076-3417/10/2/536 |
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