All Outputs (95)

Characterisation of the Quaternary eruption record: Analysis of the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database (2014)
Journal Article
Guerrero, N. O., Crosweller, H. S., Brown, S. K., Sparks, R. S. J., Cottrell, E., Deligne, N. I., …Takarada, S. (2014). Characterisation of the Quaternary eruption record: Analysis of the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database. Journal of Applied Volcanology, 3(1), https://doi.org/10.1186/2191-5040-3-5

© 2015 Brown et al. The Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database contains data on 1,883 Quaternary eruption records of magnitude (M) 4 and above and is publically accessible online via the British Geological Survey. Spatial and... Read More about Characterisation of the Quaternary eruption record: Analysis of the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database.

Interactions of volcanic airfall and glaciers: Appendix B to: Jenkins SF, Wilson TM, Magill CR, Miller V, Stewart C, Marzocchi W and Boulton M, 2014. Volcanic ash fall hazard and risk: technical background paper for the UNISDR 2015 Global Assessment Report on Disaster Risk Reduction (2014)
Report
Hobbs, L., Gilbert, J., Lane, S., & Loughlin, S. (2014). Interactions of volcanic airfall and glaciers: Appendix B to: Jenkins SF, Wilson TM, Magill CR, Miller V, Stewart C, Marzocchi W and Boulton M, 2014. Volcanic ash fall hazard and risk: technical background paper for the UNISDR 2015 Global Assessment Report on Disaster Risk Reduction. Global Volcano Model for UNISDR

The role of cold supraglacial volcanic deposits in influencing glacial ablation (2014)
Thesis
Hobbs, L. The role of cold supraglacial volcanic deposits in influencing glacial ablation. (Thesis). University of Lancaster. Retrieved from https://uwe-repository.worktribe.com/output/824635

An often overlooked factor in glacial ablation is the influence of supraglacial debris deposits, which can have both positive and negative effects. A critical thickness exists at which sub-debris ablation is equal to that of bare ice; debris will hin... Read More about The role of cold supraglacial volcanic deposits in influencing glacial ablation.

Global database on large magnitude explosive volcanic eruptions (LaMEVE) (2012)
Journal Article
Guerrero, N. O., Arora, B., Crosweller, H. S., Baneet, A., Brown, S. K., Cottrell, E., …Venzke, E. (2012). Global database on large magnitude explosive volcanic eruptions (LaMEVE). Journal of Applied Volcanology, 1(1), https://doi.org/10.1186/2191-5040-1-4

© 2012 Crosweller et al. To facilitate the assessment of hazards and risk from volcanoes, we have created a comprehensive global database of Quaternary Large Magnitude Explosive Volcanic Eruptions (LaMEVE). This forms part of the larger Volcanic Glob... Read More about Global database on large magnitude explosive volcanic eruptions (LaMEVE).

The role of cold volcanic debris in glacier ablation. AGU fall meeting EP51B-0846 (2011)
Presentation / Conference
Hobbs, L., Gilbert, J., & Lane, S. (2011, December). The role of cold volcanic debris in glacier ablation. AGU fall meeting EP51B-0846. Presented at AGU Fall Meeting 2011, San Francisco, USA

Debris deposits on ice can either enhance or hinder glacial ablation relative to a clean ice surface. The effect of debris on ice is dependent on whether its thickness is above or below a critical thickness. This is the thickness at which ablation of... Read More about The role of cold volcanic debris in glacier ablation. AGU fall meeting EP51B-0846.

The significance of volcanic ash fall for Earth’s glaciers (2011)
Presentation / Conference
Hobbs, L., Gilbert, J., & Lane, S. (2011, January). The significance of volcanic ash fall for Earth’s glaciers. Poster presented at Volcanic and Magmatic Studies Group Conference, Cambridge, UK

Worldwide glacier mass changes are key indicators of global climatic change [1]. The effect of volcanic air fall, which may enhance or hinder ablation depending primarily on deposit thickness, is a potentially important driver of glacial change. Belo... Read More about The significance of volcanic ash fall for Earth’s glaciers.

Using historical databases for the identification and analysis of future volcanic risk: VOGRIPA (2010)
Presentation / Conference
analysis of future volcanic risk: VOGRIPA. Poster presented at Cities on Volcanoes 6, Tenerife

VOGRIPA (Volcano Global Risk Identification and Analysis Project) originated as part of the Global Risk Identification Programme (GRIP under the auspices of the United Nations and World Bank. GRIP is a 5-year programme aiming at improving global know... Read More about Using historical databases for the identification and analysis of future volcanic risk: VOGRIPA.

Analysis of the LaMEVE database on global quaternary large magnitude explosive volcanism (2010)
Presentation / Conference
Sparks, R., Coles, S., Connor, C., Crosweller, S., Deligne, N., Hobbs, L., …Takarada, S. (2010, May). Analysis of the LaMEVE database on global quaternary large magnitude explosive volcanism. Presented at Cities on Volcanoes 6, Tenerife, Spain

A database of Quaternary large magnitude explosive eruptions (M ≥ 4) is under development as part of the VOGRIPA project on global volcanic hazards and risk. The database currently consists of 1929 entries from 481 Quaternary volcanoes. The database... Read More about Analysis of the LaMEVE database on global quaternary large magnitude explosive volcanism.

Analysis of a global database on quaternary explosive volcanism (2009)
Presentation / Conference
Ortiz Guerrero, N., Sparks, R., & Hobbs, L. (2009, December). Analysis of a global database on quaternary explosive volcanism. Poster presented at AGU Fall Meeting 2009, San Francisco, USA

Large volcanic eruptions, despite their low frequency of occurrence, have the potential to cause massive loss of life and affect the health of humans and animals and cause major economic losses. The knowledge of the evolution of past volcanic process... Read More about Analysis of a global database on quaternary explosive volcanism.

Partitioning of SO2 between dacitic melt and aqueous fluid phases (2009)
Presentation / Conference
Hobbs, L., & Keppler, H. (2009, June). Partitioning of SO2 between dacitic melt and aqueous fluid phases

Sulphur dioxide has significant effects on global climate. By combining with atmospheric water molecules to form H2SO4 aerosols, which strongly backscatter sunlight, it can cause a potentially global net reduction in temperature following a large exp... Read More about Partitioning of SO2 between dacitic melt and aqueous fluid phases.

Partitioning of sulphur dioxide between dacitic melt and aqueous fluid phases (2009)
Book Chapter
Hobbs, L., & Keppler, H. (2009). Partitioning of sulphur dioxide between dacitic melt and aqueous fluid phases. In S. Keyssner, & P. Buchert (Eds.), Bayerisches Geoinstitut Annual Report 2009 (124-125). Universitaet Bayreuth

Abstract available at http://www.bgi.uni-bayreuth.de/research/annual_report/2009/BGI%20Annual%20Report%202009.pdf

Adsorption of HCl onto volcanic ash (2009)
Journal Article
Hobbs, L., & Keppler, H. (2009). Adsorption of HCl onto volcanic ash. Geochimica et Cosmochimica Acta, 73(13), A536-A536. https://doi.org/10.1016/j.gca.2009.05.006

HCl molecules emitted from volcanoes breakdown to form chlorine free radicals via heterogeneous chemical reactions and photolysis, which act as catalysts to the breakdown of ozone in the stratosphere. Ozone depletion of up to 2-7% was estimated follo... Read More about Adsorption of HCl onto volcanic ash.

Global synthesis and analysis of large magnitude explosive volcanic eruptions (2008)
Presentation / Conference
Ortiz Guerrero, N., Sparks, S., Hobbs, L., Dunning, H., & Deligne, N. (2008, August). Global synthesis and analysis of large magnitude explosive volcanic eruptions. Poster presented at IAVCEI General Assembly 2008, Reykjavik, Iceland

Global synthesis and analysis of large magnitude explosive volcanic eruptions

Global frequency of large magnitude explosive volcanic eruptions recorded in the last 100,000 years (2008)
Thesis
Hobbs, L. Global frequency of large magnitude explosive volcanic eruptions recorded in the last 100,000 years. (Dissertation). University of Bristol. Retrieved from https://uwe-repository.worktribe.com/output/1019147

The effects of large magnitude (M ≥4.0) explosive eruptions can be catastrophic on a local and potentially global scale. The largest eruptions (M ≥8.0) can disperse ejecta over thousands of km2. As the last known event of this kind took place ~26,500... Read More about Global frequency of large magnitude explosive volcanic eruptions recorded in the last 100,000 years.

Global database of large magnitude explosive eruptions for magnitude-frequency analysis (2008)
Journal Article
Hobbs, L., Sparks, R., Deligne, N., Coles, S., & Dunning, H. (2008). Global database of large magnitude explosive eruptions for magnitude-frequency analysis

Large explosive volcanic eruptions can have severe consequences for life, property and climate. In the most extreme cases this can cause catastrophes on a global scale. Extreme value statistics can be used to evaluate the magnitude-frequency relation... Read More about Global database of large magnitude explosive eruptions for magnitude-frequency analysis.