Understanding Vertical Land Motion in Eastern Indonesia and Its Implications to Regional Sea Level Rise (13033) |
| Maritsa Faridatun Nisa, Paul Denys, Chien Zheng Yong and Robert Odolinski (New Zealand) |
Mrs. Maritsa Faridatun Nisa
PhD Candidate
School of Surveying, University of Otago
Dunedin
New Zealand
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| Corresponding author Mrs. Maritsa Faridatun Nisa (email: nisma474[at]student.otago.ac.nz, tel.: +64223021791) |
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| [ abstract ] [ paper ] [ handouts ] |
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Published on the web 2025-03-16
Received 2024-12-02 / Accepted n/a |
| This paper is one of selection of papers published for the FIG Working Week 2025 in Brisbane, Australia PEER REVIEW in Brisbane, Australia and has undergone the FIG Peer Review Process. |
FIG Working Week 2025 in Brisbane, Australia PEER REVIEW
ISBN n/a ISSN 2307-4086
URL n/a
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Abstract |
| This study investigates the relationship between vertical land motion (VLM) and sea level rise (SLR) in eastern Indonesia, focusing on regions such as Sulawesi, North Maluku, Banda Sea, Nusa Tenggara, and Papua. The assessment of VLM has been undertaken using Global Navigation Satellite System (GNSS) data spanning up to 13 years that shows moderate rates of subsidence across these areas, largely driven by tectonic-induced motion. However, satellite altimetry and tide gauges observations reveal a significant SLR in eastern Indonesia, with rates exceeding global averages. The combination of land subsidence and acceleration of SLR poses serious risk to coastal communities, increasing vulnerability to flooding and shoreline erosion. This study emphasizes the necessity of incorporating VLM into disaster management strategies, highlighting the importance of continuous monitoring due to the region’s active tectonic environment. The findings call for decision-making based on the inclusion of evidence from both land subsidence and SLR to ensure effective planning for future coastal resilience. |
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| Keywords: Coastal Zone Management; GNSS/GPS; Engineering survey; Deformation measurement; Vertical land motion; Sea level rise; Tectonic setting; Satellite altimetry; Tide gauges |
