A new soil mechanics approach to quantify and predict land subsidence by peat compression

Koster, Kay; Erkens, Gilles; Zwanenburg, C.

doi:10.1002/2016gl071116

Cited by 18 publications

(20 citation statements)

References 25 publications

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“…This method makes use of the relationship between net cone resistance and the reduction in peat thickness due to compression. This promising application of CPT-data, of which usually numerous amounts are available in urbanized coastal areas, allows to identify the subsurface layers that are responsible for land subsidence due to compression and enables correlation with measured subsidence rates (Koster et al, 2016).…”

Section: Compaction and Oxidation Of Holocene Coastalplain Deposits (mentioning

confidence: 99%

Advances and Practices on the Research, Prevention and Control of Land Subsidence in Coastal Cities

Yan

Yang

et al. 2020

Acta Geologica Sinica (Eng)

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Land subsidence severely threatens most of the coastal plains around the world where high productive industrial and agricultural activities and urban centers are concentrated. Coastal subsidence damages infrastructures and exacerbates the effect of the sea‐level rise at regional scale. Although it is a well‐known process, there is still much more to be improved on the monitoring, mapping and modeling of ground movements, as well as the understanding of controlling mechanisms. The International Geoscience Programme recently approved an international project (IGCP 663) aiming to bring together worldwide researchers to share expertise on subsidence processes typically occurring in coastal areas and cities, including basic research, monitoring and observation, modelling and management. In this paper, we provide the research communities and potential stakeholders with the basic information to join the participating teams in developing this project. Specifically, major advances on coastal subsidence studies and information on well‐known and new case studies of land subsidence in China, Italy, The Netherlands, Indonesia, Vietnam and Thailand are highlighted and summarized. Meanwhile, the networking, dissemination, annual meeting and field trip are briefly introduced.

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Section: Compaction and Oxidation Of Holocene Coastalplain Deposits (mentioning

confidence: 99%

Advances and Practices on the Research, Prevention and Control of Land Subsidence in Coastal Cities

Yan

Yang

et al. 2020

Acta Geologica Sinica (Eng)

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“…accumulated since the early Holocene (Barber, 2007;Törnqvist et al, 2004). A conspicuous literature is available on peat compaction, as it is one of the main causes of delta plain subsidence ( van Asselen, Stouthamer, & van Asch, 2009;Koster, Erkens, & Zwanenburg, 2016;Törnqvist et al, 2008). Due to their remarkable lateral extent, peat layers intercalated with overbank clayey sediments have been frequently used for stratigraphic correlations (Chamberlain, Törnqvist, Shen, Mauz, & Wallinga, 2018;Piovan, Mozzi, & Zecchin, 2012;Törnqvist et al, 2008).…”

Section: Eagementioning

confidence: 99%

“…Additionally, sedimentological features, such as palaeosols, can be detected within lithologically homogeneous floodplain successions (Amorosi, Bruno, Cleveland et al, 2017). Recently, Koster et al (2016), Koster, Lange et al (2018) proposed a method to estimate the amount of peat compaction based on CPT measurement.…”

Section: Cptus Interpretationmentioning

confidence: 99%

“…Peats are characteristic features of delta plains worldwide (Berendsen & Stouthamer, ; de Fátima Rossetti, Palloti Polizel, Lisboa Cohen, & Ruiz Pessenda, ; Hijma, Shen, Törnqvist, & Mauz, ; Koster, Stafleu et al, ; Massey, Paul, Gehrels, & Charman, ; Törnqvist, Bick, Borg, & Jong, ), where they discontinuously accumulated since the early Holocene (Barber, ; Törnqvist et al, ). A conspicuous literature is available on peat compaction, as it is one of the main causes of delta plain subsidence (van Asselen, Stouthamer, & van Asch, ; Koster, Erkens, & Zwanenburg, ; Törnqvist et al, ). Due to their remarkable lateral extent, peat layers intercalated with overbank clayey sediments have been frequently used for stratigraphic correlations (Chamberlain, Törnqvist, Shen, Mauz, & Wallinga, ; Piovan, Mozzi, & Zecchin, ; Törnqvist et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Peat layer accumulation and post‐burial deformation during the mid‐late Holocene in the Po coastal plain (Northern Italy)

et al. 2019

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Peat horizons are characteristic features of delta plains worldwide. In this study, we tested the use of peat‐based correlations to assess the deformation of Holocene strata in the Po coastal plain (Northern Italy). The Holocene stratigraphy, about 30 km inland from the modern coastline consists of a peat‐bearing, estuarine and deltaic succession, up to 23 m thick. Through the analysis of 31 core data and 100 piezocone penetration tests, we identified and mapped three 10–40 cm‐thick peat layers (T1–T3) dated to 6.6–5.8, 5.5–5.0 and 3.3–2.7 cal kyr BP respectively. These peat horizons were found to be suitable stratigraphic markers within the Holocene succession over an area of about 200 km2. The mid‐late Holocene palaeogeography, reconstructed through high‐resolution peat correlation, supported by 72 radiocarbon dates, highlights a typical upper delta plain environment, with ribbon‐shaped distributary channels and swamp interdistributary areas. Peat layers are inclined towards E‐NE with gradients that increase downsection from ~0.016% (T3) to 0.021% (T1). The gradient of the oldest peat horizon is one order of magnitude larger than the slope of the modern delta plain (~0.0025%). We infer that peat horizons accumulated during periods of low sediment supply mainly controlled by autogenic processes and were deformed after deposition. Differential compaction of underlying sedimentary strata and recent tectonic activity of the buried Apenninic thrust systems are the most likely drivers of strata deformation. Based on isochore maps, we document that higher sedimentation rates in topographically depressed areas compensated, in part at least, the ongoing deformation, keeping unaltered the topographic gradient and the depositional environment. This study demonstrates that peat‐based correlation and mapping can shed lights on the mechanisms of strata accumulation and deformation in deltaic settings, constituting a robust basis for reconstructing delta evolution.

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“…Consequently, alternative approaches are explored. Several studies have shown that the compressibility of unconsolidated subsurface layers is determinable with cone penetration testing (CPT) (Sanglerat 1972;CUR 1992;Lunne et al 1997;Koster et al 2016). In the international field of site investigation, CPT is among the most popular methods to sound the mechanical properties of the subsurface.…”

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confidence: 99%

Characterizing void ratio and compressibility of Holocene peat with CPT for assessing coastal–deltaic subsidence

Koster

Lange

Harting³

et al. 2018

QJEGH

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Cone penetration testing (CPT) was used to determine the void ratio and compressibility of Holocene peat present in the coastal-deltaic plain of the Netherlands, to explore its application for mapping the subsidence potential of this low-lying area. CPT sounds the mechanical behaviour of subsurface layers when penetrated with a cone, and is the most widely used site investigation method in the Netherlands. In this study 41 peat layers in the coastal-deltaic plain were sounded, and subsequently cored for determination of peat type, organic matter content, degree of decomposition and void ratio. The results revealed that cone resistance depends on the void ratio of the peat layer. The compression parameters coefficient of volume compressibility (m v ) and compression index (C c ) were derived from this. The results further revealed that the compressibility of the peat increases with increasing organic matter content. It is concluded that for mapping the susceptibility of the coastal-deltaic plain to future subsidence by peat compression, CPT has the potential to become a useful tool, as thousands of CPTs are conducted in the Netherlands each year, and their logged measurements are stored in a freely accessible national database.

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A new soil mechanics approach to quantify and predict land subsidence by peat compression

Cited by 18 publications

References 25 publications

Advances and Practices on the Research, Prevention and Control of Land Subsidence in Coastal Cities

Advances and Practices on the Research, Prevention and Control of Land Subsidence in Coastal Cities

Peat layer accumulation and post‐burial deformation during the mid‐late Holocene in the Po coastal plain (Northern Italy)

Characterizing void ratio and compressibility of Holocene peat with CPT for assessing coastal–deltaic subsidence

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