Search Results - "MEREDITH, P. G"

Micromechanics of brittle creep in rocks by Brantut, N., Baud, P., Heap, M. J., Meredith, P. G.

“…In the upper crust, the chemical influence of pore water promotes time dependent brittle deformation through sub‐critical crack growth. Sub‐critical crack…”
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Influence of temperature on brittle creep in sandstones by Heap, M. J., Baud, P., Meredith, P. G.

“…The characterization of time‐dependent brittle creep, promoted by chemically active pore fluids, is fundamental to our understanding of the long‐term evolution…”
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Time-dependent brittle creep in Darley Dale sandstone by Heap, M. J., Baud, P., Meredith, P. G., Bell, A. F., Main, I. G.

“…The characterization of time‐dependent brittle rock deformation is fundamental to understanding the long‐term evolution and dynamics of the Earth's crust. The…”
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Acoustic characterization of crack damage evolution in sandstone deformed under conventional and true triaxial loading by Browning, J., Meredith, P. G., Stuart, C. E., Healy, D., Harland, S., Mitchell, T. M.

“…We present a comparative study of crack damage evolution in dry sandstone under both conventional (σ1 > σ2 = σ3), and true triaxial (σ1 > σ2 > σ3) stress…”
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The permeability and elastic moduli of tuff from Campi Flegrei, Italy: implications for ground deformation modelling by Heap, M. J, Baud, P, Meredith, P. G, Vinciguerra, S, Reuschlé, T

“…The accuracy of ground deformation modelling at active volcanoes is a principal requirement in volcanic hazard mitigation. However, the reliability of such…”
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Seismogenic lavas and explosive eruption forecasting by Lavallée, Y, Meredith, P. G, Dingwell, D. B, Hess, K.-U, Wassermann, J, Cordonnier, B, Gerik, A, Kruhl, J. H

“…Volcanic dome-building episodes commonly exhibit acceleration in both effusive discharge rate and seismicity before explosive eruptions. This should enable the…”
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Rate- and strain-dependent brittle deformation of rocks by Brantut, N., Heap, M. J., Baud, P., Meredith, P. G.

“…We develop a unifying framework to quantify rate‐dependent deformation in the brittle field and establish links between the microscale time‐dependent crack…”
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Tracking the permeable porous network during strain-dependent magmatic flow by Kendrick, J.E., Lavallée, Y., Hess, K.-U., Heap, M.J., Gaunt, H.E., Meredith, P.G., Dingwell, D.B.

“…Rheological variations have been postulated as the cause of transitions from effusive to explosive volcanic eruption style. Rheology is integrally linked to…”
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Influence of gouge thickness and grain size on permeability of macrofractured basalt by Wang, G., Mitchell, T. M., Meredith, P. G., Nara, Y., Wu, Z.

“…Fractures allow crystalline rocks to store and transport fluids, but fracture permeability can also be influenced significantly by the existence or absence of…”
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On the threshold of flow in a tight natural rock by Meredith, P. G., Main, I. G., Clint, O. C., Li, L.

“…The behaviour of hydraulically ‘tight’ barrier rocks is a key determinant of the long‐term integrity of potential underground storage sites for the waste…”
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Strength and permeability recovery of tuffisite-bearing andesite by Kolzenburg, S, Heap, M. J, Lavallée, Y, Russell, J. K, Meredith, P. G, Dingwell, D. B

“…Tuffisites, the products of subsurface fragmentation, transport and deposition, are common in explosive volcanic environments. Their study provides direct…”
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Pore fabric shape anisotropy in porous sandstones and its relation to elastic wave velocity and permeability anisotropy under hydrostatic pressure by Benson, P.M., Meredith, P.G., Platzman, E.S., White, R.E.

“…To understand the relationship between pore space anisotropy and petrophysical properties, we developed a novel apparatus capable of simultaneously measuring…”
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Relating seismic velocities, thermal cracking and permeability in Mt. Etna and Iceland basalts by Vinciguerra, S., Trovato, C., Meredith, P.G., Benson, P.M.

“…We report simultaneous laboratory measurements of seismic velocities and fluid permeability on lava flow basalt from Etna (Italy) and columnar basalt from…”
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Seismogenic frictional melting in the magmatic column by Kendrick, J. E, Lavallée, Y, Hess, K.-U, De Angelis, S, Ferk, A, Gaunt, H. E, Meredith, P. G, Dingwell, D. B, Leonhardt, R

“…Lava dome eruptions subjected to high extrusion rates commonly evolve from endogenous to exogenous growth and limits to their structural stability hold…”
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Rock fracture compliance derived from time delays of elastic waves by Möllhoff, M., Bean, C.J., Meredith, P.G.

“…ABSTRACT The purpose of this study is to compare the reliability of various methods of estimating normal rock fracture compliance from elastic wave…”
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The evolution of elastic moduli with increasing crack damage during cyclic stressing of a basalt from Mt. Etna volcano by Heap, M.J., Vinciguerra, S., Meredith, P.G.

“…Volcanic edifices, such as Mt. Etna (Italy), are commonly subject to repeated cycles of stress over time due to the combination of magma emplacement from deep…”
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Elastic moduli evolution and accompanying stress changes with increasing crack damage: implications for stress changes around fault zones and volcanoes during deformation by Heap, M. J., Faulkner, D. R., Meredith, P. G., Vinciguerra, S.

“…The elastic moduli of rock in areas susceptible to crack damage, such as within fault zones or volcanic edifices, can be subject to large modifications…”
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Brittle creep in basalt and its application to time-dependent volcano deformation by Heap, M.J., Baud, P., Meredith, P.G., Vinciguerra, S., Bell, A.F., Main, I.G.

“…Time-dependent brittle deformation is a fundamental and pervasive process operating in the Earth's upper crust. Its characterization is a pre-requisite to…”
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Evolution of the elastic moduli of seismogenic Triassic Evaporites subjected to cyclic stressing by Trippetta, F., Collettini, C., Meredith, P.G., Vinciguerra, S.

“…Seismic cycles lead to variations in rock physical properties. Quantifying these changes is of key importance in building reliable crustal deformation models…”
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One slope or two? Detecting statistically significant breaks of slope in geophysical data, with application to fracture scaling relationships by Main, I. G., Leonard, T., Papasouliotis, O., Hatton, C. G., Meredith, P. G.

“…The scaling of displacement as a function of length is important for a variety of applications which depend on the mechanical and hydraulic properties of…”
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