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All Outputs (61)

Identifying recurrent and persistent landslides using satellite imagery and deep learning: A 30-year analysis of the Himalaya (2024)
Journal Article
Chen, T. K., Kincey, M. E., Rosser, N. J., & Seto, K. C. (2024). Identifying recurrent and persistent landslides using satellite imagery and deep learning: A 30-year analysis of the Himalaya. Science of the Total Environment, 922, Article 171161. https://doi.org/10.1016/j.scitotenv.2024.171161

This paper presents a remote sensing-based method to efficiently generate multi-temporal landslide inventories and identify recurrent and persistent landslides. We used free data from Landsat, nighttime lights, digital elevation models, and a convolu... Read More about Identifying recurrent and persistent landslides using satellite imagery and deep learning: A 30-year analysis of the Himalaya.

Detection of slow‐moving landslides through automated monitoring of surface deformation using Sentinel‐2 satellite imagery (2024)
Journal Article
Van Wyk De Vries, M., Arrell, K., Basyal, G., Densmore, A., Dunant, A., Harvey, E. L., …Dadson, S. (2024). Detection of slow‐moving landslides through automated monitoring of surface deformation using Sentinel‐2 satellite imagery. Earth Surface Processes and Landforms, 49(4), 1397-1410. https://doi.org/10.1002/esp.5775

Landslides are one of the most damaging natural hazards and have killed tens of thousands of people around the world over the past decade. Slow‐moving landslides, with surface velocities on the order of 10−2–102 m a−1, can damage buildings and infras... Read More about Detection of slow‐moving landslides through automated monitoring of surface deformation using Sentinel‐2 satellite imagery.

National‐Scale Rainfall‐Triggered Landslide Susceptibility and Exposure in Nepal (2024)
Journal Article
Kincey, M. E., Rosser, N. J., Swirad, Z. M., Robinson, T. R., Shrestha, R., Pujara, D. S., …Dunant, A. (2024). National‐Scale Rainfall‐Triggered Landslide Susceptibility and Exposure in Nepal. Earth's Future, 12(2), Article e2023EF004102. https://doi.org/10.1029/2023ef004102

Nepal is one of the most landslide‐prone countries in the world, with year‐on‐year impacts resulting in loss of life and imposing a chronic impediment to sustainable livelihoods. Living with landslides is a daily reality for an increasing number of p... Read More about National‐Scale Rainfall‐Triggered Landslide Susceptibility and Exposure in Nepal.

Modelling post-earthquake cascading hazards: Changing patterns of landslide runout following the 2015 Gorkha earthquake, Nepal (2022)
Journal Article
Kincey, M., Rosser, N., Densmore, A., Robinson, T., Shrestha, R., Pujara, D., …Arrell, K. (2023). Modelling post-earthquake cascading hazards: Changing patterns of landslide runout following the 2015 Gorkha earthquake, Nepal. Earth Surface Processes and Landforms, 48(3), 537-554. https://doi.org/10.1002/esp.5501

Coseismic landslides represent the first stage of a broader cascading sequence of geohazards associated with high-magnitude continental earthquakes, with the subsequent remobilization of coseismic landslide debris posing a long-term post-seismic lega... Read More about Modelling post-earthquake cascading hazards: Changing patterns of landslide runout following the 2015 Gorkha earthquake, Nepal.

Improving above ground biomass estimates of Southern Africa dryland forests by combining Sentinel-1 SAR and Sentinel-2 multispectral imagery. (2022)
Journal Article
Ruusa, M., Rosser, N., & Donoghue, D. (2022). Improving above ground biomass estimates of Southern Africa dryland forests by combining Sentinel-1 SAR and Sentinel-2 multispectral imagery. Remote Sensing of Environment, 282, Article 113232. https://doi.org/10.1016/j.rse.2022.113232

Having the ability to make accurate assessments of above ground biomass (AGB) at high spatial resolution is invaluable for the management of dryland forest resources in areas at risk from deforestation, forest degradation pressure and climate change... Read More about Improving above ground biomass estimates of Southern Africa dryland forests by combining Sentinel-1 SAR and Sentinel-2 multispectral imagery..

Identification of floodwater source areas in Nepal using SCIMAP‐Flood (2022)
Journal Article
Pearson, C., Reaney, S., Perks, M., Hortobagyi, B., Rosser, N., & Large, A. (2022). Identification of floodwater source areas in Nepal using SCIMAP‐Flood. Journal of Flood Risk Management, 15(4), Article e12840. https://doi.org/10.1111/jfr3.12840

Practical approaches for managing flooding from fluvial sources are moving away from mitigation solely at the point of impact and towards integrated catchment management. This considers the source areas, flow pathways of floodwaters and the locations... Read More about Identification of floodwater source areas in Nepal using SCIMAP‐Flood.

An investigation of the combined effect of rainfall and road cut on landsliding (2022)
Journal Article
Pradhan, S., Toll, D., Rosser, N., & Brain, M. (2022). An investigation of the combined effect of rainfall and road cut on landsliding. Engineering Geology, 307, Article 106787. https://doi.org/10.1016/j.enggeo.2022.106787

The reduction of soil suction and consequent loss of shear strength due to infiltration is known to trigger shallow landslides during periods of concentrated rainfall. In the mountainous terrain of Nepal, the risk of shallow rainfall-induced landslid... Read More about An investigation of the combined effect of rainfall and road cut on landsliding.

Remote sensing for monitoring tropical dryland forests: A review of current research, knowledge gaps and future directions for Southern Africa (2022)
Journal Article
David, R., Rosser, N. J., & Donoghue, D. N. (2022). Remote sensing for monitoring tropical dryland forests: A review of current research, knowledge gaps and future directions for Southern Africa. Environmental Research Communications, 4(4), https://doi.org/10.1088/2515-7620/ac5b84

Climate change, manifest via rising temperatures, extreme drought, and associated anthropogenic activities, has a negative impact on the health and development of tropical dryland forests. Southern Africa encompasses significant areas of dryland fore... Read More about Remote sensing for monitoring tropical dryland forests: A review of current research, knowledge gaps and future directions for Southern Africa.

Mass Movements (2022)
Book Chapter
Brain, M., & Rosser, N. (in press). Mass Movements. In T. Burt, A. Goudie, & H. Viles (Eds.), The History of the Study of Landforms or the Development of Geomorphology. The Geological Society. https://doi.org/10.1144/m58-2021-32

In this chapter, we consider key advances in understanding of mass movements between ~1965 and ~2000. This period saw a burgeoning need for a greater level of understanding of mass movement processes in response to a series of high impact mass moveme... Read More about Mass Movements.

Changing Significance of Landslide Hazard and Risk After The 2015 Mw 7.8 Gorkha, Nepal Earthquake (2021)
Journal Article
Rosser, N., Kincey, M., Oven, K., Densmore, A., Robinson, T., Pujara, D., …Dhital, M. (2021). Changing Significance of Landslide Hazard and Risk After The 2015 Mw 7.8 Gorkha, Nepal Earthquake. Progress in disaster science, 10, Article 100159. https://doi.org/10.1016/j.pdisas.2021.100159

The 2015 Mw 7.8 Gorkha, Nepal Earthquake triggered in excess of 20,000 landslides across 14 districts of Central and Western Nepal. Whilst the instantaneous impact of these landslides was significant, the ongoing effect of the earthquake on changing... Read More about Changing Significance of Landslide Hazard and Risk After The 2015 Mw 7.8 Gorkha, Nepal Earthquake.

Evolution of coseismic and post‐seismic landsliding after the 2015 Mw 7.8 Gorkha earthquake, Nepal (2021)
Journal Article
Kincey, M. E., Rosser, N. J., Robinson, T. R., Densmore, A. L., Shrestha, R., Pujara, D. S., …Swirad, Z. M. (2021). Evolution of coseismic and post‐seismic landsliding after the 2015 Mw 7.8 Gorkha earthquake, Nepal. Journal of Geophysical Research: Earth Surface, 126(3), Article e2020JF005803. https://doi.org/10.1029/2020jf005803

Coseismic landslides are a major hazard associated with large earthquakes in mountainous regions. Despite growing evidence for their widespread impacts and persistence, current understanding of the evolution of landsliding over time after large earth... Read More about Evolution of coseismic and post‐seismic landsliding after the 2015 Mw 7.8 Gorkha earthquake, Nepal.

Field monitoring of soil-moisture to understand the hydrological response of a road-cut slope (2020)
Book Chapter
Pradhan, S., Toll, D., Rosser, N., & Brain, M. (2020). Field monitoring of soil-moisture to understand the hydrological response of a road-cut slope. In R. Cardoso, C. Jommi, & E. Romero (Eds.), 4th European Conference on Unsaturated Soils (E-UNSAT 2020). EDP Sciences. https://doi.org/10.1051/e3sconf/202019501029

Rainfall and slope-cutting for road construction are two key landslide causative factors in Nepal, but how they interact to cause failures is poorly understood. To improve understanding of the effects of cut slopes during rainfall, geotechnical inves... Read More about Field monitoring of soil-moisture to understand the hydrological response of a road-cut slope.

Cosmogenic exposure dating reveals limited long-term variability in erosion of a rocky coastline (2020)
Journal Article
Swirad, Z. M., Rosser, N. J., Brain, M. J., Rood, D. H., Hurst, M. D., Wilcken, K. M., & Barlow, J. (2020). Cosmogenic exposure dating reveals limited long-term variability in erosion of a rocky coastline. Nature Communications, 11, Article 3804. https://doi.org/10.1038/s41467-020-17611-9

Predicted sea-level rise and increased storminess are anticipated to lead to increases in coastal erosion. However, assessing if and how rocky coasts will respond to changes in marine conditions is difficult due to current limitations of monitoring a... Read More about Cosmogenic exposure dating reveals limited long-term variability in erosion of a rocky coastline.

Emergent characteristics of rockfall inventories captured at a regional scale (2020)
Journal Article
Benjamin, J., Rosser, N., & Brain, M. (2020). Emergent characteristics of rockfall inventories captured at a regional scale. Earth Surface Processes and Landforms, 45(12), 2773-2787. https://doi.org/10.1002/esp.4929

High-resolution rockfall inventories captured at a regional scale are scarce. This is partly owing to difficulties in measuring the range of possible rockfall volumes with sufficient accuracy and completeness, and at a scale exceeding the influence o... Read More about Emergent characteristics of rockfall inventories captured at a regional scale.

The Importance of Monitoring Interval for Rockfall Magnitude-Frequency Estimation (2019)
Journal Article
Williams, J., Rosser, N., Hardy, R., & Brain, M. (2020). The Importance of Monitoring Interval for Rockfall Magnitude-Frequency Estimation. Journal of Geophysical Research: Earth Surface, 124(12), 2841-2853. https://doi.org/10.1029/2019jf005225

The frequency distribution of rockfall sizes ('magnitude-frequency') is important for erosion and hazard modeling. This typically follows a power law, with few larger rockfalls compared to more numerous small events. Advances in LiDAR hardware and al... Read More about The Importance of Monitoring Interval for Rockfall Magnitude-Frequency Estimation.

The spatial and temporal influence of cloud cover on satellite-based emergency mapping of earthquake disasters (2019)
Journal Article
Robinson, T., Rosser, N., & Walters, R. (2019). The spatial and temporal influence of cloud cover on satellite-based emergency mapping of earthquake disasters. Scientific Reports, 9, Article 12455. https://doi.org/10.1038/s41598-019-49008-0

The ability to rapidly access optical satellite imagery is now an intrinsic component of managing the disaster response that follows a major earthquake. These images provide synoptic data on the impacts, extent, and intensity of damage, which is esse... Read More about The spatial and temporal influence of cloud cover on satellite-based emergency mapping of earthquake disasters.

Simple rules to minimise exposure to coseismic landslide hazard (2019)
Journal Article
Milledge, D., Densmore, A., Bellugi, D., Rosser, N., Watt, J., Li, G., & Oven, K. (2019). Simple rules to minimise exposure to coseismic landslide hazard. Natural Hazards and Earth System Sciences, 19(4), 837-856. https://doi.org/10.5194/nhess-19-837-2019

Landslides constitute a hazard to life and infrastructure and their risk is mitigated primarily by reducing exposure. This requires information on landslide hazard on a scale that can enable informed decisions. Such information is often unavailable t... Read More about Simple rules to minimise exposure to coseismic landslide hazard.