Ice cover of Lake Baikal as a model for studying tectonic processes in the Earth’s crust

Добрецов, Н Л; Псахье, С. Г.; Ruzhich, V. V.; Popov, Valentin L.; Shilko, Evgeny V.; Granin, N. G.; Timofeev, V. Yu.; Астафуров, С. В.; Dimaki, Andrey V.; Starchevich, Ya.

doi:10.1134/s1028334x07020018

Cited by 13 publications

(5 citation statements)

References 5 publications

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“…In these events (similar to some types of events that occur on glaciers), seismic motions result from the sudden brittle failure of lake ice due to thermal expansion stresses (Goto et al 1980). Seismic events of this type have been studied as a small analogue for crustal scale processes (Hamaguchi and Goto 1978;Dobretsov et al 2007Dobretsov et al , 2013. In some cases, these brittle failures can be sudden and large enough to be considered as a source of seismic hazard to infrastructure (Makkonen et al 2010).…”

Section: Introductionmentioning

confidence: 99%

A New Year’s Day icebreaker: icequakes on lakes in Alberta, Canada

Kavanaugh

Schultz²,

Andriashek³

et al. 2019

Can. J. Earth Sci.

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Any process that causes a sudden brittle failure of material has the potential to cause earthquake-like seismic events. Cryoseisms represent an underreported class of seismic event due to their (often) small magnitudes. In this paper, we document the phenomenon of some of the largest magnitude lake-associated icequakes (ML 2.0) yet reported. These events occurred nearly simultaneously (within ∼2 h) on geographically separate lakes in Alberta, Canada, starting 1 January 2018. We conjecture that these events were caused by the sudden brittle failure of lake ice due to thermal expansion; the effects of the thermal expansion were compounded by the lack of insulating snow cover, high lake water levels, and a rapid onset of atmospheric warming. These factors also contributed to ice-jacking — a repeating process in which thermal contraction produces tensile cracks (leads) in lake ice that are then filled with water that is frozen during the cooling cycle. Thus, any subsequent thermal expansion must be accommodated by new deformation or brittle failure. This ice-jacking process caused creeping ground deformation after the initial brittle failure and again two weeks later following a second warming period. In many cases, the resulting ground deformation was significant enough to cause property damage.

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Section: Introductionmentioning

confidence: 99%

A New Year’s Day icebreaker: icequakes on lakes in Alberta, Canada

Kavanaugh

Schultz²,

Andriashek³

et al. 2019

Can. J. Earth Sci.

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show abstract

“…The amount of emitted energy in this simple example corresponds to the area bounded by the rheologic curve and the solid line of unloading of the enclosing massif. In the case when condition (8) is not true (dashed line in Fig. 9) the dynamic slip and, consequently, emission of energy are impossible.…”

Section: Generating Different Slip Modes In Laboratory Experimentsmentioning

confidence: 99%

“…The plot uses the data of several investigations. [1][2][3][4][5][6][7][8][9][10][11] are presented in [65]. Lines-best fit of the data in the range L < 500 m and L > 500 m. b Shear stiffness of a fault.…”

Section: Localization Of Deformations and Hierarchy Of Faultsmentioning

confidence: 99%

“…9) and, consequently, a decrease of the amplitude of stress drop τ and of the amount of emitted energy (magnitude of the earthquake). However, as these phenomena have no effect on fulfillment of conditions (6)- (8), they are of no use in searching for the signs of dynamic failure preparation.…”

Section: Generating Different Slip Modes In Laboratory Experimentsmentioning

confidence: 99%

“…Starting with the application of the method of movable cellular automata [4] to the problems of deformation of contact areas between rock blocks, S. G. Psakhie and his colleagues conducted a series of experimental works, including investigations of the reaction of a natural fault to dynamic disturbances and watering [5][6][7]. Especially a big cycle of works should be noted that had been performed on the ice cover of the Lake of Baikal, which was used as a model to study the tectonic processes in the Earth's crust [8,9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fault Sliding Modes—Governing, Evolution and Transformation

Kocharyan

Остапчук

Павлов

2020

Springer Tracts in Mechanical Engineering

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A brief summary of fundamental results obtained in the IDG RAS on the mechanics of sliding along faults and fractures is presented. Conditions of emergence of different sliding regimes, and regularities of their evolution were investigated in the laboratory, as well as in numerical and field experiments. All possible sliding regimes were realized in the laboratory, from creep to dynamic failure. Experiments on triggering the contact zone have demonstrated that even a weak external disturbance can cause failure of a “prepared” contact. It was experimentally proven that even small variations of the percentage of materials exhibiting velocity strengthening and velocity weakening in the fault principal slip zone may result in a significant variation of the share of seismic energy radiated during a fault slip event. The obtained results lead to the conclusion that the radiation efficiency of an earthquake and the fault slip mode are governed by the ratio of two parameters—the rate of decrease of resistance to shear along the fault and the shear stiffness of the enclosing massif. The ideas developed were used to determine the principal possibility to artificially transform the slidding regime of a section of a fault into a slow deformation mode with a low share of seismic wave radiation.

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Ice universality: perception of ice, its properties and connected processes on Earth and in the extraterrestrial environment. Earth sciences perspective

Dobiński

2024

Earth-Science Reviews

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Ice cover of Lake Baikal as a model for studying tectonic processes in the Earth’s crust

Cited by 13 publications

References 5 publications

A New Year’s Day icebreaker: icequakes on lakes in Alberta, Canada

A New Year’s Day icebreaker: icequakes on lakes in Alberta, Canada

Fault Sliding Modes—Governing, Evolution and Transformation

Ice universality: perception of ice, its properties and connected processes on Earth and in the extraterrestrial environment. Earth sciences perspective

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