Professor Nick Rosser's Outputs (65)

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.

Identifying mechanisms of shore platform erosion using Structure-from-Motion (SfM) photogrammetry (2019)
Journal Article
Swirad, Z. M., Rosser, N. J., & Brain, M. J. (2019). Identifying mechanisms of shore platform erosion using Structure-from-Motion (SfM) photogrammetry. Earth Surface Processes and Landforms, 44(8), 1542-1558. https://doi.org/10.1002/esp.4591

Shore platforms control wave energy transformation which, in turn, controls energy delivery to the cliff toe and nearshore sediment transport. Insight into shore platform erosion rates has conventionally been constrained at mm-scales using micro-eros... Read More about Identifying mechanisms of shore platform erosion using Structure-from-Motion (SfM) photogrammetry.

Controls on the geotechnical response of sedimentary rocks to weathering (2019)
Journal Article
de Vilder, S., Brain, M., & Rosser, N. (2019). Controls on the geotechnical response of sedimentary rocks to weathering. Earth Surface Processes and Landforms, 44(10), 1910-1929. https://doi.org/10.1002/esp.4619

Weathering reduces the strength of rocks and so is a key control on the stability of rock slopes. Recent research suggests that the geotechnical response of rocks to weathering varies with ambient stress conditions resulting from overburden loading a... Read More about Controls on the geotechnical response of sedimentary rocks to weathering.

Intertidal boulder-based wave hindcasting can underestimate wave size: Evidence from Yorkshire, UK (2019)
Journal Article
Kennedy, D. M., Woods, J. L., Naylor, L. A., Hansom, J. D., & Rosser, N. J. (2019). Intertidal boulder-based wave hindcasting can underestimate wave size: Evidence from Yorkshire, UK. Marine Geology, 411, 98-106. https://doi.org/10.1016/j.margeo.2019.02.002

Large boulder-size clasts can represent important archives of high energy erosional wave activity at the coast. From tropical coral reefs to high-latitude eroding cliffs, boulders have been used to hindcast the frequency and magnitude (height) of wav... Read More about Intertidal boulder-based wave hindcasting can underestimate wave size: Evidence from Yorkshire, UK.

Use of scenario ensembles for deriving seismic risk (2018)
Journal Article
Robinson, T., Rosser, N., Densmore, A., Oven, K., Shrestha, S., & Guragain, R. (2018). Use of scenario ensembles for deriving seismic risk. Proceedings of the National Academy of Sciences, 115(41), E9532-E9541. https://doi.org/10.1073/pnas.1807433115

High death tolls from recent earthquakes show that seismic risk remains high globally. While there has been much focus on seismic hazard, large uncertainties associated with exposure and vulnerability have led to more limited analyses of the potentia... Read More about Use of scenario ensembles for deriving seismic risk.

Transferability of a calibrated numerical model of rock avalanche run-out: application to 20 rock avalanches on the Nuussuaq Peninsula, West Greenland (2018)
Journal Article
Benjamin, J., Rosser, N., Dunning, S., Hardy, R., Kelfoun, K., & Szczuciński, W. (2018). Transferability of a calibrated numerical model of rock avalanche run-out: application to 20 rock avalanches on the Nuussuaq Peninsula, West Greenland. Earth Surface Processes and Landforms, 43(15), 3057-3073. https://doi.org/10.1002/esp.4469

Long run‐out rock avalanches are one of the most hazardous geomorphic processes, and risk assessments of the potential threat they pose are often reliant on numerical modelling of their potential run‐out distance. The development of such models requi... Read More about Transferability of a calibrated numerical model of rock avalanche run-out: application to 20 rock avalanches on the Nuussuaq Peninsula, West Greenland.

Alongshore variability in wave energy transfer to coastal cliffs (2018)
Journal Article
Vann Jones, E., Rosser, N., & Brain, M. (2018). Alongshore variability in wave energy transfer to coastal cliffs. Geomorphology, 322, 1-14. https://doi.org/10.1016/j.geomorph.2018.08.019

The alongshore distribution of wave energy is believed to be an important control on the spatial variability of coastal erosion. There is, however, a lack of field data quantifying the alongshore variability in wave energy on rock coasts, whereby the... Read More about Alongshore variability in wave energy transfer to coastal cliffs.

Near-real-time modelling of landslide impacts to inform rapid response: an example from the 2016 Kaikoura, New Zealand, earthquake (2018)
Journal Article
Robinson, T., Rosser, N., Davies, T., Wilson, T., & Orchiston, C. (2018). Near-real-time modelling of landslide impacts to inform rapid response: an example from the 2016 Kaikoura, New Zealand, earthquake. Bulletin of the Seismological Society of America, 108(3B), 1665-1682. https://doi.org/10.1785/0120170234

Reliable methods for the near‐real‐time modeling of landslide hazard and associated impacts that follow an earthquake are required to provide crucial information to guide emergency responses. After the 2016 Kaikoura earthquake in New Zealand, we unde... Read More about Near-real-time modelling of landslide impacts to inform rapid response: an example from the 2016 Kaikoura, New Zealand, earthquake.

Optimising 4-D surface change detection: an approach for capturing rockfall magnitude–frequency (2018)
Journal Article
Williams, J., Rosser, N., Hardy, R., Brain, M., & Afana, A. (2018). Optimising 4-D surface change detection: an approach for capturing rockfall magnitude–frequency. Earth Surface Dynamics, 6(1), 101-119. https://doi.org/10.5194/esurf-6-101-2018

We present a monitoring technique tailored to analysing change from near-continuously collected, high-resolution 3D data. Our aim is to fully characterise geomorphological change typified by an event magnitude frequency relationship that adheres to a... Read More about Optimising 4-D surface change detection: an approach for capturing rockfall magnitude–frequency.

Satellite-based emergency mapping using optical imagery: experience and reflections from the 2015 Nepal earthquakes (2018)
Journal Article
Williams, J., Rosser, N., Kincey, M., Benjamin, J., Oven, K., Densmore, A., …Dijkstra, T. (2018). Satellite-based emergency mapping using optical imagery: experience and reflections from the 2015 Nepal earthquakes. Natural Hazards and Earth System Sciences, 18, 185-205. https://doi.org/10.5194/nhess-18-185-2018

Landslides triggered by large earthquakes in mountainous regions contribute significantly to overall earthquake losses and pose a major secondary hazard that can persist for months or years. While scientific investigations of coseismic landsliding ar... Read More about Satellite-based emergency mapping using optical imagery: experience and reflections from the 2015 Nepal earthquakes.

Drift-dependent changes in iceberg size-frequency distributions (2017)
Journal Article
Kirkham, J. D., Rosser, N. J., Wainwright, J., Vann Jones (née Norman), E. C., Dunning, S. A., Lane, V. S., …Szczuciński, W. (2017). Drift-dependent changes in iceberg size-frequency distributions. Scientific Reports, 7, Article 15991. https://doi.org/10.1038/s41598-017-14863-2

Although the size-frequency distributions of icebergs can provide insight into how they disintegrate, our understanding of this process is incomplete. Fundamentally, there is a discrepancy between iceberg power-law size-frequency distributions observ... Read More about Drift-dependent changes in iceberg size-frequency distributions.

Rapid post-earthquake modelling of coseismic landsliding intensity and distribution for emergency response decision support (2017)
Journal Article
Robinson, T., Rosser, N., Densmore, A., Williams, J., Kincey, M., Benjamin, J., & Bell, H. (2017). Rapid post-earthquake modelling of coseismic landsliding intensity and distribution for emergency response decision support. Natural Hazards and Earth System Sciences, 17(9), 1521-1540. https://doi.org/10.5194/nhess-17-1521-2017

Current methods to identify coseismic landslides immediately after an earthquake using optical imagery are too slow to effectively inform emergency response activities. Issues with cloud cover, data collection and processing, and manual landslide ide... Read More about Rapid post-earthquake modelling of coseismic landsliding intensity and distribution for emergency response decision support.

Forensic analysis of rockfall scars (2017)
Journal Article
de Vilder, S., Rosser, N., & Brain, M. (2017). Forensic analysis of rockfall scars. Geomorphology, 295, 202-214. https://doi.org/10.1016/j.geomorph.2017.07.005

We characterise and analyse the detachment (scar) surfaces of rockfalls to understand the mechanisms that underpin their failure. Rockfall scars are variously weathered and comprised of both discontinuity release surfaces and surfaces indicative of f... Read More about Forensic analysis of rockfall scars.

Forensic rockfall scar analysis: Development of a mechanically correct model of rockfall failure (2017)
Book Chapter
de Vilder, S., Rosser, N., Brain, M., & Vann Jones, E. (2017). Forensic rockfall scar analysis: Development of a mechanically correct model of rockfall failure. In J. De Graff, & A. Shakoor (Eds.), Landslides : putting experience, knowledge and emerging technologies into practice (829-839). Association of Environmental & Engineering Geologists (AEG)

The mechanical controls on small (< 10 m3), individual rockfall in jointed rock masses are not well constrained. We use forensic analysis of rockfall detachment surfaces (scars) which display fractured surfaces broken through intact rock, termed rock... Read More about Forensic rockfall scar analysis: Development of a mechanically correct model of rockfall failure.

Rapid post-earthquake modelling of coseismic landslide magnitude and distribution for emergency response decision support (2017)
Journal Article
Robinson, T., Rosser, N., Densmore, A., Williams, J., Kincey, M., Benjamin, J., & Bell, H. (2017). Rapid post-earthquake modelling of coseismic landslide magnitude and distribution for emergency response decision support. Natural Hazards and Earth System Sciences Discussions, 17, 1521-1540. https://doi.org/10.5194/nhess-2017-83

Current methods to identify coseismic landslides immediately after an earthquake using optical imagery are too slow to effectively inform emergency response activities. Issues with cloud cover, data collection and processing, and manual landslide ide... Read More about Rapid post-earthquake modelling of coseismic landslide magnitude and distribution for emergency response decision support.

The control of earthquake sequences on hillslope stability (2017)
Journal Article
Brain, M., Rosser, N., & Tunstall, N. (2017). The control of earthquake sequences on hillslope stability. Geophysical Research Letters, 44(2), 865-872. https://doi.org/10.1002/2016gl071879

Earthquakes trigger landslides in mountainous regions. Recent research suggests that the stability of hillslopes during and after a large earthquake is influenced by legacy effects of previous seismic activity. However, the mechanisms that control hi... Read More about The control of earthquake sequences on hillslope stability.

Quantitative reconstruction of late Holocene surface evolution on an alpine debris-flow fan (2016)
Journal Article
Schürch, P., Densmore, A., Ivy-Ochs, S., Rosser, N., Kober, F., Schlunegger, F., …Alfimov, V. (2016). Quantitative reconstruction of late Holocene surface evolution on an alpine debris-flow fan. Geomorphology, 275, 46-57. https://doi.org/10.1016/j.geomorph.2016.09.020

Debris-flow fans form a ubiquitous record of past debris-flow activity in mountainous areas, and may be useful for inferring past flow characteristics and consequent future hazard. Extracting information on past debris flows from fan records, however... Read More about Quantitative reconstruction of late Holocene surface evolution on an alpine debris-flow fan.

Rockfall detection and volumetric characterisation using LiDAR (2016)
Book Chapter
Benjamin, J., Rosser, N., & Brain, M. (2016). Rockfall detection and volumetric characterisation using LiDAR. In S. Aversa, L. Cascini, L. Picarelli, & C. Scavia (Eds.), Landslides and Engineered Slopes: Experience, Theory and Practice (389 - 396). CRC Press

What controls the geometry of rocky coasts at the local scale? (2016)
Journal Article
Swirad, Z. M., Rosser, N. J., Brain, M. J., & Vann Jones, E. C. (2016). What controls the geometry of rocky coasts at the local scale?. Journal of coastal research, 75(sp1), 612-616. https://doi.org/10.2112/si75-123.1

There is a need to understand the controls on rocky coastal form in order to predict the likely response to climate changes and sea-level rise. Spatial variations in coastal geometry result from inheritance and contemporary processes, notably erosive... Read More about What controls the geometry of rocky coasts at the local scale?.