Seismic waves from distant, large earthquakes can almost instantaneously trigger shallow micro-earthquakes and deep tectonic tremor as they pass through Earth’s crust1. Such remotely triggered seismic activity mostly occurs in tectonically active regions. Triggered seismicity is generally considered to reflect shear failure on critically stressed fault planes and is thought to be driven by dynamic stress perturbations from both Love and Rayleigh types of surface seismic wave2. Here we analyse seismic data from Antarctica in the six hours leading up to and following the 2010 Mw 8.8 Maule earthquake in Chile. We identify many high-frequency seismic signals during the passage of the Rayleigh waves generated by the Maule earthquake, and interpret them as small icequakes triggered by the Rayleigh waves. The source locations of these triggered icequakes are difficult to determine owing to sparse seismic network coverage, but the triggered events generate surface waves, so are probably formed by near-surface sources. Our observations are consistent with tensile fracturing of near-surface ice or other brittle fracture events caused by changes in volumetric strain as the high-amplitude Rayleigh waves passed through. We conclude that cryospheric systems can be sensitive to large distant earthquakes.
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Peng, Z. & Gomberg, J. An integrative perspective of coupled seismic and aseismic slow slip phenomena. Nature Geosci. 3, 599–607 (2010).
Hill, D. P. & Prejean, S. in Earthquake Seismology (eds Beroza, G. & Kanamori, H.) Ch. 78, 1–32 (Treatise on Geophysics Series 2nd edn, Vol. 4, in the press, 2014).
Nettles, M. & Ekström, G. Glacial earthquakes in Greenland and Antarctica. Ann. Rev. Earth Planet. Sci. 38, 467–491 (2010).
Martin, S. et al. Kinematic and seismic analysis of giant tabular iceberg breakup at Cape Adare, Antarctica. J. Geophys. Res. 115, B06311 (2010).
Zoet, L. K., Anandakrishnan, S., Alley, R. B., Nyblade, A. A. & Wiens, D. A. Motion of an Antarctic glacier by repeated tidally modulated earthquakes. Nature Geosci. 5, 623–626 (2012).
Winberry, J. P., Anandakrishnan, S., Wiens, D. A. & Alley, R. B. Nucleation and seismic tremor associated with the glacial earthquakes of Whillans Ice Stream, Antarctica. Geophys. Res. Lett. 40, 312–315 (2013).
MacAyeal, D. R. et al. Transoceanic wave propagation links iceberg calving margins of Antarctica with storms in tropics and Northern Hemisphere. Geophys. Res. Lett. 33, L17502 (2006).
Brunt, K. M., Okal, E. A. & MacAyeal, D. R. Antarctic ice-shelf calving triggered by the Honshu earthquake and tsunami, March 2011. J. Glaciol. 57, 785–788 (2011).
Walker, C. C., Bassis, J. N., Fricker, H. A. & Czerwinski, R. J. Structural and environmental controls on Antarctic ice shelf rift propagation inferred from satellite monitoring. J. Geophys. Res. Earth Surf. 118, 2354–2364 (2013).
Peng, Z., Hill, D. P., Shelly, D. R. & Aiken, C. Remotely triggered microearthquakes and tremor in Central California following the 2010 Mw 8.8 Chile earthquake. Geophys. Res. Lett. 37, L24312 (2010).
Peng, Z. et al. Tectonic tremor beneath Cuba triggered by the Mw 8.8 Maule and Mw 9.0 Tohoku-Oki earthquakes. Bull. Seismol. Soc. Am. 103, 595–560 (2013).
Fry, B., Chao, K., Bannister, S. C., Peng, Z. & Wallace, L. Deep tremor in New Zealand triggered by the 2010 Mw 8.8 Chile earthquake. Geophys. Res. Lett. 38, L15306 (2011).
Velasco, A. A., Hernandez, S., Parsons, T. & Pankow, K. Global ubiquity of dynamic earthquake triggering. Nature Geosci. 1, 375–379 (2008).
Atlas of Antarctic Research, United States Antarctic Resource Center, United States Geological Survey, http://gisdata.usgs.gov/website/antarctic_research_atlas/
Miyazawa, M. & Mori, J. Evidence suggesting fluid flow beneath Japan due to periodic seismic triggering from the 2004 Sumatra–Andaman earthquake. Geophys. Res. Lett. 33, L05303 (2006).
Rubinstein, J. L. et al. Seismic wave triggering of non-volcanic tremor, episodic tremor and slip, and earthquakes on Vancover Island. J. Geophys. Res. 114, B00A01 (2009).
Walter, F. et al. Moment tensor inversions of icequakes on Gornergletscher, Switzerland. Bull. Seismol. Soc. Am. 99, 852–870 (2009).
Peng, Z. & Zhao, P. Migration of early aftershocks following the 2004 Parkfield earthquake. Nature Geosci. 2, 877–881 (2009).
Lough, A. C., Wiens, D. A., Barcheck, C. G. & Nyblade, A. Waveform studies of strong cryoseismic sources near the top of the Antarctic ice sheet. AGU (Fall Meeting Suppl.) abstr. C51B-0523 (2013)
Lough, A. C. et al. Seismic detection of an active subglacial volcanic center in Marie Byrd Land, Antarctica. Nature Geosci. 6, 1031–1035 (2013).
Smith, A. M. Microearthquakes and subglacial conditions. Geophys. Res. Lett. 33, L24501 (2006).
Hill, D. P. Surface-wave potential for triggering tectonic (nonvolcanic) tremor–corrected. Bull. Seismol. Soc. Am. 102, 2337–2355 (2012).
Walter, J. I., Peng, Z., Tulaczyk, S. M., O’Neel, S. & Amundson, J. M. Triggering of glacier seismicity (Icequakes) by distant earthquakes. Seismol. Res. Lett. 84, 372 (2013).
Bindschadler, R. et al. The landsat image mosaic of Antarctica. Remote Sens. Environ. 112, 4214–4226 (2008).
Rignot, E., Mouginot, J. & Scheuchl, B. Ice flow of the Antarctic ice sheet. Science 333, 1427–1430 (2011).
Peng, Z., Long, L. T. & Zhao, P. The relevance of high-frequency analysis artifacts to remote triggering. Seismol. Res. Lett. 82, 654–660 (2011).
Financial support for this study was provided by the NSF CAREER grant EAR-0956051 (Z.P. and J.I.W.). POLENET-Antarctica is supported by NSF Office of Polar Programs grant numbers 0632230, 0632239, 0652322, 0632335, 0632136, 0632209, 0632185, and POLENET-Antarctica phase 2 is supported by NSF Office of Polar Programs grant numbers 1246776 1246712 and 1419268. Seismic instrumentation was provided and supported by the Incorporated Research Institutions for Seismology (IRIS) through the PASSCAL Instrument Center at New Mexico Tech. Seismic data are available through the IRIS Data Management Center. The facilities of the IRIS Consortium are supported by the NSF under Cooperative Agreement EAR-1063471, the NSF Office of Polar Programs and the DOE National Nuclear Security Administration. This manuscript benefits from useful comments by C. Aiken, F. Walter and C. Wu.
The authors declare no competing financial interests.
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Peng, Z., Walter, J., Aster, R. et al. Antarctic icequakes triggered by the 2010 Maule earthquake in Chile. Nature Geosci 7, 677–681 (2014). https://doi.org/10.1038/ngeo2212
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