Cooling-dominated cracking in thermally stressed volcanic rocks. / Browning, John; Meredith, Philip; Gudmundsson, Agust.

In: Geophysical Research Letters, Vol. 43, No. 16, 28.08.2016, p. 8417-8425.

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Cooling-dominated cracking in thermally stressed volcanic rocks. / Browning, John; Meredith, Philip; Gudmundsson, Agust.

In: Geophysical Research Letters, Vol. 43, No. 16, 28.08.2016, p. 8417-8425.

Research output: Contribution to journalArticlepeer-review

Harvard

Browning, J, Meredith, P & Gudmundsson, A 2016, 'Cooling-dominated cracking in thermally stressed volcanic rocks', Geophysical Research Letters, vol. 43, no. 16, pp. 8417-8425. https://doi.org/10.1002/2016GL070532

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Author

Browning, John ; Meredith, Philip ; Gudmundsson, Agust. / Cooling-dominated cracking in thermally stressed volcanic rocks. In: Geophysical Research Letters. 2016 ; Vol. 43, No. 16. pp. 8417-8425.

BibTeX

@article{a21c451b81de4712bd1726725ee5a04a,
title = "Cooling-dominated cracking in thermally stressed volcanic rocks",
abstract = "Most studies of thermally-induced cracking in rocks have focused on the generation of cracks formed during heating and thermal expansion. Both the nature and mechanism of crack formation during cooling are hypothesised to be different from those formed during heating. We present in-situ acoustic emission data recorded as a proxy for crack damage evolution in a series of heating and cooling experiments on samples of basalt and dacite. The results show that both the rate and energy of acoustic emission are consistently much higher during cooling than during heating. Seismic velocity comparisons and crack morphology analysis of our heated and cooled samples support the contemporaneous acoustic emission data and also indicate that thermal cracking is largely isotropic. These new data are important for assessing the contribution of cooling-induced damage within volcanic structures and layers such as dikes, sills, and lava flows.",
author = "John Browning and Philip Meredith and Agust Gudmundsson",
year = "2016",
month = aug,
day = "28",
doi = "10.1002/2016GL070532",
language = "English",
volume = "43",
pages = "8417--8425",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "16",

}

RIS

TY - JOUR

T1 - Cooling-dominated cracking in thermally stressed volcanic rocks

AU - Browning, John

AU - Meredith, Philip

AU - Gudmundsson, Agust

PY - 2016/8/28

Y1 - 2016/8/28

N2 - Most studies of thermally-induced cracking in rocks have focused on the generation of cracks formed during heating and thermal expansion. Both the nature and mechanism of crack formation during cooling are hypothesised to be different from those formed during heating. We present in-situ acoustic emission data recorded as a proxy for crack damage evolution in a series of heating and cooling experiments on samples of basalt and dacite. The results show that both the rate and energy of acoustic emission are consistently much higher during cooling than during heating. Seismic velocity comparisons and crack morphology analysis of our heated and cooled samples support the contemporaneous acoustic emission data and also indicate that thermal cracking is largely isotropic. These new data are important for assessing the contribution of cooling-induced damage within volcanic structures and layers such as dikes, sills, and lava flows.

AB - Most studies of thermally-induced cracking in rocks have focused on the generation of cracks formed during heating and thermal expansion. Both the nature and mechanism of crack formation during cooling are hypothesised to be different from those formed during heating. We present in-situ acoustic emission data recorded as a proxy for crack damage evolution in a series of heating and cooling experiments on samples of basalt and dacite. The results show that both the rate and energy of acoustic emission are consistently much higher during cooling than during heating. Seismic velocity comparisons and crack morphology analysis of our heated and cooled samples support the contemporaneous acoustic emission data and also indicate that thermal cracking is largely isotropic. These new data are important for assessing the contribution of cooling-induced damage within volcanic structures and layers such as dikes, sills, and lava flows.

U2 - 10.1002/2016GL070532

DO - 10.1002/2016GL070532

M3 - Article

VL - 43

SP - 8417

EP - 8425

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 16

ER -