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DAVID LARGE

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DAVID LARGE

Abbott Professor of Geoscience


Tropical peat surface oscillations are a function of peat condition at North Selangor peat swamp forest, Malaysia (2023)
Journal Article
Ledger, M. J., Evans, C. D., Large, D. J., Evers, S., Brown, C., Jovani-Sancho, A. J., …Sjögersten, S. (2023). Tropical peat surface oscillations are a function of peat condition at North Selangor peat swamp forest, Malaysia. Frontiers in Environmental Science, 11, Article 1182100. https://doi.org/10.3389/fenvs.2023.1182100

Tropical peatland condition across southeast Asia is deteriorating as a result of conversion to agriculture and urban zones. Conversion begins by lowering the water table, which leads to peat decomposition, subsidence and increased risk of large-scal... Read More about Tropical peat surface oscillations are a function of peat condition at North Selangor peat swamp forest, Malaysia.

Modelling the influence of mechanical-ecohydrological feedback on the nonlinear dynamics of peatlands (2023)
Journal Article
Mahdiyasa, A. W., Large, D. J., Muljadi, B. P., & Icardi, M. (2023). Modelling the influence of mechanical-ecohydrological feedback on the nonlinear dynamics of peatlands. Ecological Modelling, 478, Article 110299. https://doi.org/10.1016/j.ecolmodel.2023.110299

Peatlands are complex systems that exhibit nonlinear dynamics due to internal and external feedback mechanisms. However, the feedback of vegetation on peat volume changes that potentially affect peatland dynamics is not well understood. Here, we anal... Read More about Modelling the influence of mechanical-ecohydrological feedback on the nonlinear dynamics of peatlands.

Pore Structure-Transport Relationships in Bowland Shale (2022)
Book Chapter
Pitcher, E. G., Fletcher, R. S., Large, D. J., & Rigby, S. P. (2023). Pore Structure-Transport Relationships in Bowland Shale. In The Bowland Shale Formation, UK: Processes and Resources. Geological Society. https://doi.org/10.1144/sp534-2021-97

Shale rocks are highly structurally and chemically heterogeneous, such that the pore structure-transport relationship is complex. Shales typically have porosity over many length-scales from the molecular up to macroscopic fractures. This work utilize... Read More about Pore Structure-Transport Relationships in Bowland Shale.

Potential use of APSIS-InSAR measures of the range of vertical surface motion to improve hazard assessment of peat landslides (2022)
Journal Article
Islam, M. T., Bradley, A. V., Sowter, A., Andersen, R., Marshall, C., Long, M., …Large, D. J. (2022). Potential use of APSIS-InSAR measures of the range of vertical surface motion to improve hazard assessment of peat landslides. Mires and Peat, 28, Article 21. https://doi.org/10.19189/MaP.2021.OMB.StA.2356

Peat landslides represent a notable natural hazard that is difficult to assess across complex blanket bog terrain. To aid the assessment of peat landslide susceptibility, we propose a new metric, the range of vertical surface motion (RVSM), quantifie... Read More about Potential use of APSIS-InSAR measures of the range of vertical surface motion to improve hazard assessment of peat landslides.

Identification of typical ecohydrological behaviours using InSAR allows landscape-scale mapping of peatland condition (2022)
Journal Article
Bradley, A. V., Andersen, R., Marshall, C., Sowter, A., & Large, D. J. (2022). Identification of typical ecohydrological behaviours using InSAR allows landscape-scale mapping of peatland condition. Earth Surface Dynamics, 10(2), 261-277. https://doi.org/10.5194/esurf-10-261-2022

Better tools for rapid and reliable assessment of global peatland extent and condition are urgently needed to support action to prevent further decline of peatlands. Peatland surface motion is a response to changes in the water and gas content of a p... Read More about Identification of typical ecohydrological behaviours using InSAR allows landscape-scale mapping of peatland condition.

Towards a Monitoring Approach for Understanding Permafrost Degradation and Linked Subsidence in Arctic Peatlands (2022)
Journal Article
de la Barreda-Bautista, B., Boyd, D. S., Ledger, M., Siewert, M. B., Chandler, C., Bradley, A. V., …Sjögersten, S. (2022). Towards a Monitoring Approach for Understanding Permafrost Degradation and Linked Subsidence in Arctic Peatlands. Remote Sensing, 14(3), Article 444. https://doi.org/10.3390/rs14030444

Permafrost thaw resulting from climate warming is threatening to release carbon from high latitude peatlands. The aim of this research was to determine subsidence rates linked to permafrost thaw in sub-Arctic peatlands in Sweden using historical orth... Read More about Towards a Monitoring Approach for Understanding Permafrost Degradation and Linked Subsidence in Arctic Peatlands.

Multiscale Variability and the Comparison of Ground and Satellite Radar Based Measures of Peatland Surface Motion for Peatland Monitoring (2022)
Journal Article
Marshall, C., Sterk, H. P., Gilbert, P. J., Andersen, R., Bradley, A. V., Sowter, A., …Large, D. J. (2022). Multiscale Variability and the Comparison of Ground and Satellite Radar Based Measures of Peatland Surface Motion for Peatland Monitoring. Remote Sensing, 14(2), Article 336. https://doi.org/10.3390/rs14020336

Peatland surface motion is highly diagnostic of peatland condition. Interferometric Synthetic Aperture Radar (InSAR) can measure this at the landscape scale but requires ground validation. This necessitates upscaling from point to areal measures (80... Read More about Multiscale Variability and the Comparison of Ground and Satellite Radar Based Measures of Peatland Surface Motion for Peatland Monitoring.

MPeat—A fully coupled mechanical-ecohydrological model of peatland development (2021)
Journal Article
Mahdiyasa, A. W., Large, D. J., Muljadi, B. P., Icardi, M., & Triantafyllou, S. (2022). MPeat—A fully coupled mechanical-ecohydrological model of peatland development. Ecohydrology, 15(1), Article e2361. https://doi.org/10.1002/eco.2361

Mathematical models of long-term peatland development have been produced to analyse peatland behaviour. However, existing models ignore the mechanical processes that have the potential to provide important feedback. Here, we propose a one-dimensional... Read More about MPeat—A fully coupled mechanical-ecohydrological model of peatland development.

Potential impacts of oxygen impurities in carbon capture and storage on microbial community composition and activity (2021)
Journal Article
Morgan, H., Large, D. J., Bateman, K., Hanstock, D., & Gregory, S. P. (2021). Potential impacts of oxygen impurities in carbon capture and storage on microbial community composition and activity. International Journal of Greenhouse Gas Control, 111, Article 103479. https://doi.org/10.1016/j.ijggc.2021.103479

Gaseous impurities, such as O2, are expected to be present within CO2 captured for storage. This could stimulate microbial activity in a geological CO2 storage site which has the potential to lead to operational issues such as injection well blockage... Read More about Potential impacts of oxygen impurities in carbon capture and storage on microbial community composition and activity.