List of works - Michael J. Heap

Slip on 'weak' faults by the rotation of regional stress in the fracture damage zone

scientific article published in Nature

Time-dependent cracking and brittle creep in crustal rocks: A review

article

Time-dependent brittle creep in Darley Dale sandstone

scientific article

The evolution of elastic moduli with increasing crack damage during cyclic stressing of a basalt from Mt. Etna volcano

Exploring the scale-dependent permeability of fractured andesite

scholarly article by Michael J. Heap & Ben M. Kennedy published August 2016 in Earth and Planetary Science Letters

Reconstructing magma failure and the degassing network of dome-building eruptions

scholarly article

Brittle creep in basalt and its application to time-dependent volcano deformation

scholarly article by M.J. Heap et al published July 2011 in Earth and Planetary Science Letters

Tracking the permeable porous network during strain-dependent magmatic flow

scholarly article by J.E. Kendrick et al published June 2013 in Journal of Volcanology and Geothermal Research

Fracture and compaction of andesite in a volcanic edifice.

scientific article

Volcanic edifice weakening via devolatilization reactions

scholarly article by Silvio Mollo et al published 1 September 2011 in Geophysical Journal International

Permeability and porosity relationships of edifice-forming andesites: A combined field and laboratory study

scholarly article by Jamie Farquharson et al published May 2015 in Journal of Volcanology and Geothermal Research

Time-dependent permeability evolution in compacting volcanic fracture systems and implications for gas overpressure

scholarly article by Jamie I. Farquharson et al published June 2017 in Journal of Volcanology and Geothermal Research

Elastic moduli evolution and accompanying stress changes with increasing crack damage: implications for stress changes around fault zones and volcanoes during deformation

article published in 2010

Microstructural controls on the physical and mechanical properties of edifice-forming andesites at Volcán de Colima, Mexico

scholarly article

Micromechanics of brittle creep in rocks

scholarly article

Influence of temperature on brittle creep in sandstones

scholarly article

Mechanical behaviour and failure modes in the Whakaari (White Island volcano) hydrothermal system, New Zealand

article

A multidisciplinary approach to quantify the permeability of the Whakaari/White Island volcanic hydrothermal system (Taupo Volcanic Zone, New Zealand)

article

Complex conductivity of volcanic rocks and the geophysical mapping of alteration in volcanoes

scholarly article by A. Ghorbani et al published May 2018 in Journal of Volcanology and Geothermal Research

Evidence for the development of permeability anisotropy in lava domes and volcanic conduits

article

Increase in radon emission due to rock failure: An experimental study

scholarly article by S. Mollo et al published July 2011 in Geophysical Research Letters

Closing an open system: Pore pressure changes in permeable edifice rock at high strain rates

scholarly article by Michael J. Heap & Fabian B. Wadsworth published April 2016 in Journal of Volcanology and Geothermal Research

Porosity evolution at the brittle-ductile transition in the continental crust: Implications for deep hydro-geothermal circulation

scientific article published on 09 August 2017

Time-dependent compaction band formation in sandstone

How tough is tuff in the event of fire?

scholarly article

Rate- and strain-dependent brittle deformation of rocks

scholarly article

Thermal weakening of the carbonate basement under Mt. Etna volcano (Italy): Implications for volcano instability

article

The permeability and elastic moduli of tuff from Campi Flegrei, Italy: implications for ground deformation modelling

article

From rock to magma and back again: The evolution of temperature and deformation mechanism in conduit margin zones

scholarly article

Challenges for forecasting based on accelerating rates of earthquakes at volcanoes and laboratory analogues

scholarly article by Andrew F. Bell et al published 1 May 2011 in Geophysical Journal International

Microstructural and petrophysical properties of the Permo-Triassic sandstones (Buntsandstein) from the Soultz-sous-Forêts geothermal site (France)

article

Stylolites in limestones: Barriers to fluid flow?

scientific article

Quantifying the evolution of static elastic properties as crystalline rock approaches failure

scientific article published in 2008

Mechanical behaviour of dacite from Mount St. Helens (USA): A link between porosity and lava dome extrusion mechanism (dome or spine)?

scholarly article by M.J. Heap et al published December 2016 in Journal of Volcanology and Geothermal Research

3D electrical conductivity tomography of volcanoes

scholarly article by A. Soueid Ahmed et al published May 2018 in Journal of Volcanology and Geothermal Research

Strain-induced permeability increase in volcanic rock

scholarly article

Quantification of microcrack characteristics and implications for stiffness and strength of granite

scientific article published in 2017

A generic model for the shallow velocity structure of volcanoes

scholarly article by Philippe Lesage et al published May 2018 in Journal of Volcanology and Geothermal Research

Experimental generation of volcanic pseudotachylytes: Constraining rheology

Inelastic compaction and permeability evolution in volcanic rock

scholarly article by Jamie I. Farquharson et al published 27 April 2017 in Solid Earth

Volcanic edifice weakening via decarbonation: A self-limiting process?

article by Silvio Mollo et al published 10 August 2012 in Geophysical Research Letters

A general model for welding of ash particles in volcanic systems validated using in situ X-ray tomography

scholarly article

Conditions and timescales for welding block-and-ash flow deposits

scholarly article by M.J. Heap et al published December 2014 in Journal of Volcanology and Geothermal Research

Pore pressure embrittlement in a volcanic edifice

Acid-Induced Dissolution of Andesite: Evolution of Permeability and Strength

scientific article

Does an inter-flaw length control the accuracy of rupture forecasting in geological materials?

scholarly article by Jérémie Vasseur et al published October 2017 in Earth and Planetary Science Letters

Volcanic conduit failure as a trigger to magma fragmentation

Mechanical behaviour of the Rotokawa Andesites (New Zealand): Insight into permeability evolution and stress-induced behaviour in an actively utilised geothermal reservoir

article

Geothermal implications for fracture-filling hydrothermal precipitation

article published in 2016

Laboratory simulations of tensile fracture development in a volcanic conduit via cyclic magma pressurisation

article

List of works by Michael J. Heap

Slip on 'weak' faults by the rotation of regional stress in the fracture damage zone

Time-dependent cracking and brittle creep in crustal rocks: A review

Time-dependent brittle creep in Darley Dale sandstone

The evolution of elastic moduli with increasing crack damage during cyclic stressing of a basalt from Mt. Etna volcano

Exploring the scale-dependent permeability of fractured andesite

Reconstructing magma failure and the degassing network of dome-building eruptions

Brittle creep in basalt and its application to time-dependent volcano deformation

Tracking the permeable porous network during strain-dependent magmatic flow

Fracture and compaction of andesite in a volcanic edifice.

Volcanic edifice weakening via devolatilization reactions

Permeability and porosity relationships of edifice-forming andesites: A combined field and laboratory study

Time-dependent permeability evolution in compacting volcanic fracture systems and implications for gas overpressure

Elastic moduli evolution and accompanying stress changes with increasing crack damage: implications for stress changes around fault zones and volcanoes during deformation

Microstructural controls on the physical and mechanical properties of edifice-forming andesites at Volcán de Colima, Mexico

Micromechanics of brittle creep in rocks

Influence of temperature on brittle creep in sandstones

Mechanical behaviour and failure modes in the Whakaari (White Island volcano) hydrothermal system, New Zealand

A multidisciplinary approach to quantify the permeability of the Whakaari/White Island volcanic hydrothermal system (Taupo Volcanic Zone, New Zealand)

Complex conductivity of volcanic rocks and the geophysical mapping of alteration in volcanoes

Evidence for the development of permeability anisotropy in lava domes and volcanic conduits

Increase in radon emission due to rock failure: An experimental study

Closing an open system: Pore pressure changes in permeable edifice rock at high strain rates

Porosity evolution at the brittle-ductile transition in the continental crust: Implications for deep hydro-geothermal circulation

Time-dependent compaction band formation in sandstone

How tough is tuff in the event of fire?

Rate- and strain-dependent brittle deformation of rocks

Thermal weakening of the carbonate basement under Mt. Etna volcano (Italy): Implications for volcano instability

The permeability and elastic moduli of tuff from Campi Flegrei, Italy: implications for ground deformation modelling

From rock to magma and back again: The evolution of temperature and deformation mechanism in conduit margin zones

Challenges for forecasting based on accelerating rates of earthquakes at volcanoes and laboratory analogues

Microstructural and petrophysical properties of the Permo-Triassic sandstones (Buntsandstein) from the Soultz-sous-Forêts geothermal site (France)

Stylolites in limestones: Barriers to fluid flow?

Quantifying the evolution of static elastic properties as crystalline rock approaches failure

Mechanical behaviour of dacite from Mount St. Helens (USA): A link between porosity and lava dome extrusion mechanism (dome or spine)?

3D electrical conductivity tomography of volcanoes

Strain-induced permeability increase in volcanic rock

Quantification of microcrack characteristics and implications for stiffness and strength of granite

A generic model for the shallow velocity structure of volcanoes

Experimental generation of volcanic pseudotachylytes: Constraining rheology

Inelastic compaction and permeability evolution in volcanic rock

Volcanic edifice weakening via decarbonation: A self-limiting process?

A general model for welding of ash particles in volcanic systems validated using in situ X-ray tomography

Conditions and timescales for welding block-and-ash flow deposits

Pore pressure embrittlement in a volcanic edifice

Acid-Induced Dissolution of Andesite: Evolution of Permeability and Strength

Does an inter-flaw length control the accuracy of rupture forecasting in geological materials?

Volcanic conduit failure as a trigger to magma fragmentation

Mechanical behaviour of the Rotokawa Andesites (New Zealand): Insight into permeability evolution and stress-induced behaviour in an actively utilised geothermal reservoir

Geothermal implications for fracture-filling hydrothermal precipitation

Laboratory simulations of tensile fracture development in a volcanic conduit via cyclic magma pressurisation