Atlantis, a tool for producing national predictive land subsidence maps of the Netherlands

Bootsma, Huite; Kooi, H.; Erkens, Gilles

doi:10.5194/piahs-382-415-2020

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…While observational limitations are a major challenge in approximating future changes, in many cases future projections VLM are challenging due to the non-linear nature of the processes themselves [Shirzaei et al, 2021, Oelsmann et al, 2023. Thus in addition to accurate and dense VLM observations, the most appropriate and meaningful ways (e.g., process models and assumptions of future scenarios, such as of groundwater extraction [Bootsma et al, 2020, Minderhoud et al, 2020, Fang et al, 2022, or sediment supply in deltas [Zoccarato et al, 2018]) to make projections must be considered.…”

Section: Limitations and Uncertainties Of Current Vlm Observationsmentioning

confidence: 99%

Coastal populations experience sea level rise at least twice as large as the global average

Oelsmann,

Nicholls,

Lincke

et al. 2023

Preprint

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Coastal subsidence can significantly increase rates of relative sea level change over and above climate-related changes, and has been reported to be particularly large in densely populated regions. However, due to the small scale variability of vertical land motion (VLM) and the sparsity of VLM observations, there is currently still low confidence in VLM and the uncertainties this introduces in sea level change estimates. Therefore, we synergize currently available VLM observations (from GNSS, InSAR, tide gauges, and satellite altimetry) to investigate the impact of VLM on relative sea level changes and their uncertainties, as well as the implications for coastal populations. We find that the average contemporary (1995-2019) global relative sea level change experienced by coastal populations (5.14 mm/year) is more than twice as large as the average coastal relative sea level change (2.09 mm/year). This is because rates of subsidence tend to be higher in densely populated areas. A significant part of the coastline (representing 40% of the coastal population) lacks measurements or access to the direct measuring stations which are necessary to constrain VLM rates estimated with InSAR. Missing, or imprecise VLM constraints contribute to the increased population-weighted uncertainties in the relative sea level change trends of ~3 mm/year. Thus, future community efforts are needed to improve the observational database in the disproportionately exposed and densely populated coasts in order to reduce uncertainties in estimates of future relative sea-level rise and their societal implications.

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Section: Limitations and Uncertainties Of Current Vlm Observationsmentioning

confidence: 99%

Coastal populations experience sea level rise at least twice as large as the global average

Oelsmann,

Nicholls,

Lincke

et al. 2023

Preprint

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“…The data of these monitoring sites will be used to calibrate and validate land subsidence and peat-oxidation derived CO 2 -emission models of The Netherlands that are linked to a 3D geological model of the subsurface on a 100 m resolution spatial grid (Bootsma et al, 2020). To enrich simulation capabilities, isotache-based soft-soil creep formulations have been implemented in a new aquifer system compaction package SUB-CR for MODFLOW (Kooi et al, 2018) and in a 1-dimensional finite element simulator that allows study of the subsidence response to changes in dynamic water table conditions (Kooi and Erkens, 2020a).…”

Section: Monitoring and Simulationmentioning

confidence: 99%

Sustainable development of coastal cities through control of land subsidence: activities of IGCP Project 663 in Jakarta

Yan

Yang

et al. 2022

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The awareness on the importance that land subsidence plays on coastal processes at the regional scale is increased over the last two decades, and it clearly appears that land subsidence can contribute primarily to the relative sea level rise affecting coastal zones. Jakarta is one of the cities mostly affected by the combination of sea-level rise and land subsidence. In this paper, the activities carried out in Jakarta under the umbrella of the IGCP Project 663 were presented, and the possible measures and best practices mitigating land subsidence for the research associates and potential stakeholders were provided, with which can serve as inspiration for authorities and communities facing land subsidence. Meanwhile, major achievements of IGCP 663 in Jakarta were summarized and introduced, including dissemination session, scientific session and field trips. Specifically, major advances on coastal subsidence studies regarding the effect of relative sea level rise, subsidence mapping, monitoring and simulation, as well as the support of policy making are highlighted and summarized.

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Study of negative skin friction on floating piles foundation due to long-term groundwater extraction in Semarang, Indonesia

Tazakka¹,

Tirta²,

Popang³

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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The northern Semarang area is prone to a land subsidence problem as the underlying soil consists of a thick layer of normally consolidated clay which also exacerbated by groundwater extraction to meet water demand. The downdrag impact on a pile structure due to the water extraction from two major aquifers that have been used for domestic consumption was investigated. A 3D-finite element analysis was performed to a raft foundation with steel pipe piles. The study used Banger polder data and soil characteristics based on previous investigations. The evaluation was done by comparing the results of negative skin friction (NSF) and total settlement within 50 years period under continuous extraction and one without. From the result, the corner pile located farthest from the pump mobilized NSF of 64% of the total negative skin friction which was highest than middle and interior-corner piles of 28% and 20%, respectively. The groundwater extraction was also found to contribute to almost double the settlement in 50 years in the non-piled area, from 0.24 m without extraction to 0.42 m accounted for. Also, the empirical 0.75Lpile for the maximum neutral point of the pile is in agreement in the result of this study.

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Atlantis, a tool for producing national predictive land subsidence maps of the Netherlands

Cited by 4 publications

References 3 publications

Coastal populations experience sea level rise at least twice as large as the global average

Coastal populations experience sea level rise at least twice as large as the global average

Sustainable development of coastal cities through control of land subsidence: activities of IGCP Project 663 in Jakarta

Study of negative skin friction on floating piles foundation due to long-term groundwater extraction in Semarang, Indonesia

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