ANALYSIS OF SEA LEVEL RISE IN THE SUBDUCTION ZONE AT THE COASTAL AREA OF SELARU ISLAND AND YAMDENA ISLAND IN TANIMBAR ISLANDS DISTRICT

Authors

Ibnu A. Azies, Master’s Program in Oceanography, Naval Postgraduate Technology College (STTALFollow
Engki A. Kisnarti, Oceanography Program, Hang Tuah University (UHT), Indonesia
Johar Setiyadi, Program in Oceanography, Naval Postgraduate Technology College (STTAL)
Widodo S. Pranowo, Research Center for Climate and Atmosphere, National Research and Innovation Agency(BRIN)Follow

Abstract

The phenomenon of sea level rise (SLR) is a global issue affecting coastal areas. This study analyzes SLR and land deformation in the subduction zone of the Tanimbar Islands, specifically the coastal regions of Adaut on Selaru Island and Saumlaki on Yamdena Island. Statistical methods and the CEEMDAN algorithm were used to process data on tides, Sea Level Anomaly (SLA), Sea Surface Temperature (SST), and the influence of the El Niño-Southern Oscillation (ENSO) over 30 years (1993–2022). Additionally, land deformation was analyzed using Sentinel-1A imagery. The results indicate that uplift is more dominant than subsidence, with an average annual uplift of 1.862 mm in Adaut and 3.205 mm in Saumlaki. SLR projections until 2100 indicate an increase of 67.304 cm in Adaut and 56.560 cm in Saumlaki after being corrected for uplift. This study provides significant contributions to understanding the interaction between tectonic and oceanographic processes in subduction zones and serves as a reference for mitigating the impacts of SLR in Indonesia.

Keywords

SLR, ENSO, CEEMDAN, uplift, Tanimbar Islands

Publication Date

2025

Received Date

10/12/2024

Revised Date

23/02/2025

Accepted Date

27/06/2025

Recommended Citation

Azies, Ibnu A.; Kisnarti, Engki A.; Setiyadi, Johar; and Pranowo, Widodo S. (2025) "ANALYSIS OF SEA LEVEL RISE IN THE SUBDUCTION ZONE AT THE COASTAL AREA OF SELARU ISLAND AND YAMDENA ISLAND IN TANIMBAR ISLANDS DISTRICT," ASEAN Journal on Science and Technology for Development: Vol. 43: No. 1, Article 9.
DOI: https://doi.org/10.29037/2224-9028.1635
Available at: https://ajstd.ubd.edu.bn/journal/vol43/iss1/9