Remote Sensing-Based Assessment of Exorheic Siltation in Homonhon Island, Philippines Using Hyperspectral Imagery

Jelinda M.Gulfre, Sarah Alma P. Bentir and Jayson M. Victoriano
Additional contact information
Jelinda M.Gulfre: Graduate School, La Consolacion University Philippines, Malolos Bulacan, 3000, Philippines
Sarah Alma P. Bentir: College of Information and Communication Technology, Bulacan State University- Sarmiento Campus, San Jose Del Monte Bulacan, 3023, Philippines
Jayson M. Victoriano: College of Information and Communication Technology, Bulacan State University, Malolos, Bulacan, 3000, Philippines

International Journal of Latest Technology in Engineering, Management & Applied Science, 2025, vol. 14, issue 5, 406-417

Abstract: Mining activities on Homonhon Island, Philippines, have increasingly contributed to coastal water pollution and siltation, particularly during extreme weather events. This study investigates the influence of climatological factors—specifically precipitation—on mining-induced siltation using satellite-based remote sensing. Sentinel-2A imagery was employed to monitor and quantify changes in water turbidity and sediment deposition before and after typhoon events. Two spectral indices, the Normalized Difference Water Index (NDWI) and Normalized Difference Turbidity Index (NDTI), were applied to assess the extent of siltation across different time periods. Results revealed a notable increase in siltation areas following typhoons, with the year 2023 showing a surge of approximately 11 million square meters of affected areas, despite receiving only 23.9 mm of rainfall. This indicates that cumulative land degradation from mining operations may have heightened siltation susceptibility even under moderate precipitation. These findings highlight the critical role of satellite-based monitoring in supporting sustainable land use and coastal resource management in mining-affected regions.

Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.ijltemas.in/DigitalLibrary/Vol.14Issue5/406-417.pdf (application/pdf)
https://www.ijltemas.in/papers/volume-14-issue-5/406-417.html (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:bjb:journl:v:14:y:2025:i:5:p:406-417

Access Statistics for this article

International Journal of Latest Technology in Engineering, Management & Applied Science is currently edited by Dr. Pawan Verma

More articles in International Journal of Latest Technology in Engineering, Management & Applied Science from International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS)
Bibliographic data for series maintained by Dr. Pawan Verma ().