Java Northern Coast at Risk as Land Subsidence, Sea Levels Rise

(MENAFN) Several locations along the northern shoreline of Indonesia’s Java Island are facing growing environmental challenges as land subsidence combines with rising sea levels, heightening the risk of flooding and coastal inundation, according to a researcher from the National Research and Innovation Agency (BRIN).

According to reports, sea levels in the affected areas are increasing by as much as 4.3 millimeters annually, while parts of the coastline are simultaneously experiencing land sinking, creating greater vulnerability for nearby communities.

BRIN researcher Agung Syetiawan said the issue has been identified in multiple coastal regions, including Jakarta, Bekasi, Indramayu, Cirebon, Subang, Pemalang, Pekalongan, and Demak. The findings are based on satellite imagery, on-site observations, and geospatial modeling studies.

According to the researcher, one of the primary factors contributing to land subsidence is the excessive extraction of groundwater for household needs and aquaculture operations, which has accelerated ground-level decline in several coastal areas.

He emphasized that effective responses should be guided by detailed geospatial analyses and long-term planning. According to reports, recommended measures include tighter groundwater management, restoration of mangrove ecosystems, and assessments of existing seawall infrastructure to strengthen coastal resilience and support sustainable development in vulnerable regions.

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