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Uncertainties in Ray-Tracing Tomography Models Used for Sub-Basalt Seismic Imaging (2022)
Journal Article
Sanford, O., Hobbs, R., Brown, R., & Schofield, N. (2023). Uncertainties in Ray-Tracing Tomography Models Used for Sub-Basalt Seismic Imaging. Pure and Applied Geophysics, 180(1), 145-156. https://doi.org/10.1007/s00024-022-03199-2

Sequences of buried basalt lavas found along continental margins may be associated with hydrocarbon deposits. However, they have heterogeneous velocity and density structures that degrade seismic imaging of basalt and sub-basalt structures and make t... Read More about Uncertainties in Ray-Tracing Tomography Models Used for Sub-Basalt Seismic Imaging.

Growth of complex volcanic ash aggregates in the Tierra Blanca Joven eruption of Ilopango Caldera, El Salvador (2022)
Journal Article
Hoult, H., Brown, R. J., Van Eaton, A. R., Hernandez, W., Dobson, K. J., & Woodward, B. (2022). Growth of complex volcanic ash aggregates in the Tierra Blanca Joven eruption of Ilopango Caldera, El Salvador. Journal of Volcanology and Geothermal Research, 431, Article 107670. https://doi.org/10.1016/j.jvolgeores.2022.107670

Aggregation processes control both the residence time and dispersal of volcanic ash during eruptions yet remain incompletely understood. The products of aggregation vary from simple ash clusters to large, complexly layered accretionary lapilli. Here... Read More about Growth of complex volcanic ash aggregates in the Tierra Blanca Joven eruption of Ilopango Caldera, El Salvador.

Reconstruction of the 29th December 2013 eruption of San Miguel volcano, El Salvador, using video, photographs, and pyroclastic deposits (2022)
Journal Article
Brown, R. J., Hernández, W., Escobar, D., Gutierrez, E., Crummy, J., Cole, R., & Tournigand, P. (2022). Reconstruction of the 29th December 2013 eruption of San Miguel volcano, El Salvador, using video, photographs, and pyroclastic deposits. Volcanica, 5(2), 271 - 293. https://doi.org/10.30909/vol.05.02.271293

San Miguel (or Chaparrastique) volcano, El Salvador, erupted on the 29thDecember 2013, after almost 40 years of quiescence.Initial vent-clearing explosions ejected ballistic blocks and produced a pyroclastic density current (PDC) that flowed down the... Read More about Reconstruction of the 29th December 2013 eruption of San Miguel volcano, El Salvador, using video, photographs, and pyroclastic deposits.

Melt stripping and agglutination of pyroclasts during the explosive eruption of low viscosity magmas (2022)
Journal Article
Jones, T. J., Russell, J. K., Brown, R. J., & Hollendonner, L. (2022). Melt stripping and agglutination of pyroclasts during the explosive eruption of low viscosity magmas. Nature Communications, 13(1), https://doi.org/10.1038/s41467-022-28633-w

Volcanism on Earth and on other planets and satellites is dominated by the eruption of low viscosity magmas. During explosive eruption, high melt temperatures and the inherent low viscosity of the fluidal pyroclasts allow for substantial post-fragmen... Read More about Melt stripping and agglutination of pyroclasts during the explosive eruption of low viscosity magmas.