Investigating the tectonic influence to the anthropogenic subsidence along northern coast of Java Island Indonesia using GNSS data sets

Andreas, Heri; Abidin, Hasanuddin Z.; Sarsito, Dina A.; Meilano, Irwan; Susilo,

doi:10.1051/e3sconf/20199404005

Cited by 8 publications

(7 citation statements)

References 19 publications

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“…GNSS observation data at the CPTU CORS station for 2011-2021, located ±1km from the PRTU tidal station, shows an uplift trend of 0.2 mm/year. This is of previous research by [23].…”

Section: The Relationship Between Slr and Dynamic And Static Influencesupporting

confidence: 74%

Relative and Absolute Sea Level Change Variability in The Palabuhanratu Bay Waters

Novita,

Mandini Manessa,

Patria

2023

IOP Conf. Ser.: Earth Environ. Sci.

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SLR could affect the waters of Palabuhanratu Bay, which are exposed to the Indian Ocean. Sea levels are rising due to RSL and ASL changes. RSL has increased by 22.86 mm/year based on tidal data for 2013–2022. In contrast, ASL has increased by 4.48 mm/year based on satellite altimetry data for 1992–2022. The research uses the linear regression method to get the SLR value. According to earlier studies, dynamic change elements connected to alterations in the atmosphere and ocean circulation are typically considered when analyzing sea level variations. This work explores sea-level variations, including dynamic and static changes impacted by geological processes like deformation. Dynamic change factors, such as climate anomalies, ENSO, and IOD, affect these changes. Regarding RSL changes, ENSO has a more decisive influence than IOD, and vice versa for ASL changes. In the La Nina phenomenon and negative IOD phase, RSL and ASL trend changes are enhanced, whereas they are lowered in the El Nino and positive IOD phases. These waters’ sea-level variations are only slightly impacted by local processes, such as VLM. It has a more decisive influence on RSL changes than ASL.

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“…GNSS observation data at the CPTU CORS station for 2011-2021, located ±1km from the PRTU tidal station, shows an uplift trend of 0.2 mm/year. This is of previous research by [23].…”

Section: The Relationship Between Slr and Dynamic And Static Influencesupporting

confidence: 74%

Relative and Absolute Sea Level Change Variability in The Palabuhanratu Bay Waters

Novita,

Mandini Manessa,

Patria

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…They demonstrate that saline water intrusion accelerates the rate of soil compaction and thus land subsidence. Finally, Andreas et al (2019a) investigate the influence of tectonic movement and concludes that its influence on subsidence is negligeable. In short, scientists aim to identify, represent, and rank various interactions of land, watery and human elements below and on the surface of Semarang.…”

Section: Early Stage Of Land Subsidence Science and Main Measuring Me...mentioning

confidence: 99%

“…Scientists producing subsidence measurements underline the catastrophic and irreversible nature of subsidence in Semarang, naming it a ‘silent disaster’ (Abidin et al, 2010, 2013, 2015; Andreas et al, 2017, 2019b). Geologists agree that extremely fast rates of subsidence occur because of a highly compressible aquifer that compacts under its own weight, as well as under the pressure of human factors: along the northern coastal area of the city, both non-humans and humans interact.…”

Section: Introductionmentioning

confidence: 99%

Destabilizing the science of soils: Geoscientists as spokespersons for land subsidence in Semarang, Indonesia

Belland,

Kooy,

Zwarteveen

2023

Environment and Planning E: Nature and Space

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In this article, we explore how land subsidence is scientifically known in the coastal city of Semarang, Indonesia. We do so to ask questions about how the authority of this scientific knowledge is or not effective to help slow down land subsidence? We examine the scientific methods used to measure where, and at what rate, subsidence occurs, and we inventory the theories mobilized to interpret and explain them. Our analysis shows how land subsidence resists being fully or unambiguously known; its science remains somewhat speculative. We explore how, in Semarang, but also more broadly, this makes it difficult for subsidence scientists to act as effective ‘spokespersons’ for subsidence; their predictions lack certainty and confidence. As we follow the subsidence debates in Semarang we document how subsidence scientists need the authority of science to speak convincingly to powerful elite coalitions of government agencies and private companies, who have vested interests in ignoring or denying their role in causing or accelerating subsidence. We identify this as one reason why subsidence scientists deploy great efforts to present themselves, and their science, as separate from politics and society, as detached and therefore objective. Beyond contributing to emergent discussions in science and technology studies about how science shapes underground politics, our analysis opens up and sheds new light on the question of how scientific facts become entangled with politics in societal controversies.

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“…The northern coast of Java is an area that has a high population density and has many industrial areas, such as Jakarta, Bekasi, Karawang, Cirebon, Tegal, Pekalongan, Semarang, Gresik, and Surabaya [1]. However, the northern coast of Java also has problems with massive coastal degradation [2], such as abrasion and accretion [2-4], inundation [2], and subsidence [5][6][7]; as well as tidal flooding [2,8]. Of the approximately 1687 km long coastline of Java, 745 km (44%) experience abrasion with an erosion rate of around 1950 ha per year [4].…”

Section: Introductionmentioning

confidence: 99%

Thirty years of change of Pekalongan coastline based on Landsat imagery

Chulafak¹,

Khomarudin²,

Ardha³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The northern coastal area of Java Island is where many economic and industrial centers are located. Many big cities are located in this area, such as Jakarta, Semarang, and Surabaya. One of the problems in this area is the occurrence of tidal flooding. One of those affected by the tidal flood is Pekalongan, where the city also experienced land subsidence which is more severe than other big cities in Indonesia. One of the impacts of tidal flooding is the occurrence of coastal abrasion, where land areas are increasingly disappearing. This research objective is to see how big the coastline changes occurred in the Pekalongan area for 30 years through remote sensing data. Landsat image was used to see changes in coastlines from 1988 to 2021 on an annual basis. NDWI (Normalized Difference Water Index) was used to clarify the difference between land and water areas. Moreover, to reduce subjectivity, Otsu’s method was used for thresholding. The results show that most Pekalongan area is subject to abrasion, with the most severe conditions up to around 232 m. In addition, there are also problems related to tidal flooding, whose conditions are increasingly widespread every year.

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Investigating the tectonic influence to the anthropogenic subsidence along northern coast of Java Island Indonesia using GNSS data sets

Cited by 8 publications

References 19 publications

Relative and Absolute Sea Level Change Variability in The Palabuhanratu Bay Waters

Relative and Absolute Sea Level Change Variability in The Palabuhanratu Bay Waters

Destabilizing the science of soils: Geoscientists as spokespersons for land subsidence in Semarang, Indonesia

Thirty years of change of Pekalongan coastline based on Landsat imagery

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