Abstract
We present rigorous tests of global short-term earthquake forecasts using Epidemic Type Aftershock Sequence models with two different time kernels (one with exponentially tapered Omori kernel (ETOK) and another with linear magnitude dependent Omori kernel (MDOK)). The tests are conducted with three different magnitude cutoffs for the auxiliary catalog (M3, M4 or M5) and two different magnitude cutoffs for the primary catalog (M5 or M6), in 30 day long pseudo prospective experiments designed to forecast worldwide M ≥ 5 and M ≥ 6 earthquakes during the period from January 1981 to October 2019. MDOK ETAS models perform significantly better relative to ETOK ETAS models. The superiority of MDOK ETAS models adds further support to the multifractal stress activation model proposed by Ouillon and Sornette [J. Geophys. Res.: Solid Earth 110, B04306 (2005)]. We find a significant improvement of forecasting skills by lowering the auxiliary catalog magnitude cutoff from 5 to 4. We unearth evidence for a self-similarity of the triggering process as models trained on lower magnitude events have the same forecasting skills as models trained on higher magnitude earthquakes. Expressing our forecasts in terms of the full distribution of earthquake rates at different spatial resolutions, we present tests for the consistency of our model, which is often found satisfactory but also points to a number of potential improvements, such as incorporating anisotropic spatial kernels, and accounting for spatial and depth dependant variations of the ETAS parameters. The model has been implemented as a reference model on the global earthquake prediction platform RichterX, facilitating predictive skill assessment and allowing anyone to review its prospective performance.
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References
C. Bach, S. Hainzl, J. Geophys. Res.: Solid Earth 117, B04312 (2012)
P. Bird, D.D. Jackson, Y.Y. Kagan, C. Kreemer, R.S. Stein, Bull. Seismol. Soc. Am. 105, 2538 (2015)
A. Cao, S.S. Gao, Geophys. Res. Lett. 29, 48 (2002)
C. Cattania, S. Hainzl, L. Wang, F. Roth, B. Enescu, J. Geophys. Res.: Solid Earth 119, 7846 (2014)
C. Cattania, M.J. Werner, W. Marzocchi, S. Hainzl, D. Rhoades, M. Gerstenberger, M. Liukis, W. Savran, A. Christophersen, A. Helmstetter, et al., Seismol. Res. Lett. 89, 1238 (2018)
A. Chu, F.P. Schoenberg, P. Bird, D.D. Jackson, Y.Y. Kagan, Bull. Seismol. Soc. Am. 101, 2323 (2011)
J. Davidsen, C. Gu, M. Baiesi, Geophys. J. Int. 201, 965 (2015)
J. Dieterich, J. Geophys. Res.: Solid Earth 99, 2601 (1994)
D.A. Eberhard, J.D. Zechar, S. Wiemer, Geophys. J. Int. 190, 1579 (2012)
M.C. Gerstenberger, S. Wiemer, L.M. Jones, P.A. Reasenberg, Nature 435, 328 (2005)
Y. Guo, J. Zhuang, S. Zhou, J. Geophys. Res.: Solid Earth 120, 3309 (2015)
S. Hainzl, J. Geophys. Res.: Solid Earth 121, 6499 (2016)
S. Hainzl, Seismol. Res. Lett. 87, 337 (2016)
S. Hainzl, A. Christophersen, B. Enescu, Bull. Seismol. Soc. Am. 98, 2066 (2008)
A. Helmstetter, D. Sornette, J. Geophys. Res.: Solid Earth 107, ESE–10 (2002)
A. Helmstetter, D. Sornette, Geophys. Res. Lett. 30, 1576 (2003)
A. Helmstetter, M.J. Werner, Bull. Seismol. Soc. Am. 104, 809 (2014)
A. Helmstetter, Y.Y. Kagan, D.D. Jackson, Bull. Seismol. Soc. Am. 96, 90 (2006)
S. Hiemer, Y. Kamer, Seismol. Res. Lett. 87, 327 (2016)
S. Hiemer, J. Woessner, R. Basili, L. Danciu, D. Giardini, S. Wiemer, Geophys. J. Int. 198, 1159 (2014)
T.H. Jordan, Seismol. Res. Lett. 77, 3 (2006)
Y. Kagan, D. Jackson, Pure Appl. Geophys. 167, 709 (2010)
Y.Y. Kagan, Geophys. J. Int. 110, 305 (1992)
Y.Y. Kagan, D.D. Jackson, Geophys. J. Int. 184, 759 (2011)
Y. Kamer, S. Nandan, G. Ouillon, S. Hiemer, D. Sornette, Eur. Phys. J. Special Topics 230, 451 (2021)
V.G. Kossobokov, Nat. Hazards 69, 1155 (2013)
A.J. Michael, S.K. McBride, J.L. Hardebeck, M. Barall, E. Martinez, M.T. Page, N. van der Elst, E.H. Field, K.R. Milner, A.M. Wein, Seismol. Res. Lett. 91, 153 (2020)
A. Mignan, J. Woessner, Estimating the magnitude of completeness for earthquake catalogs. Community Online Resource for Statistical Seismicity Analysis (2012). doi:https://doi.org/10.5078/corssa-0018080510.5078/corssa-00180805
S. Nandan, Towards a physics based epidemic type aftershock sequence model, Ph.D. thesis, ETH Zurich, 2017
S. Nandan, G. Ouillon, S. Wiemer, D. Sornette, J. Geophys. Res.: Solid Earth 122, 5118 (2017)
S. Nandan, G. Ouillon, D. Sornette, J. Geophys. Res.: Solid Earth 124, 2762 (2019)
S. Nandan, G. Ouillon, D. Sornette, S. Wiemer, Seismol. Res. Lett. 90, 1650 (2019)
S. Nandan, G. Ouillon, D. Sornette, S. Wiemer, J. Geophys. Res.: Solid Earth 124, 8404 (2019)
C. Narteau, P. Shebalin, M. Holschneider, Geophys. Res. Lett. 32, L22312 (2005)
Y. Ogata, Earth Planets Space 63, 6 (2011)
Y. Ogata, K. Katsura, G. Falcone, K. Nanjo, J. Zhuang, Bull. Seismol. Soc. Am. 103, 1692 (2013)
G. Ouillon, D. Sornette, J. Geophys. Res.: Solid Earth 110, B04306 (2005)
G. Ouillon, D. Sornette, E. Ribeiro, Geophys. J. Int. 178, 215 (2009)
M.T. Page, N. Van Der Elst, J. Hardebeck, K. Felzer, A.J. Michael, Bull. Seismol. Soc. Am. 106, 2290 (2016)
M. Pesaresi, D. Ehrlich, T. Kemper, A. Siragusa, A.J. Florczyk, S. Freire, C. Corbane, Atlas of the Human Planet 2017: Global Exposure to Natural Hazards, EUR 28556 EN (2017)
P. Reasenberg, J. Geophys. Res.: Solid Earth 90, 5479 (1985)
T. Reverso, S. Steacy, D. Marsan, J. Geophys. Res.: Solid Earth 123, 9750 (2018)
D.A. Rhoades, D. Schorlemmer, M.C. Gerstenberger, A. Christophersen, J.D. Zechar, M. Imoto, Acta Geophys. 59, 728 (2011)
A. Saichev, D. Sornette, Eur. Phys. J. B 51, 443 (2006)
A. Saichev, D. Sornette, Eur. Phys. J. B 49, 377 (2006)
A. Saichev, D. Sornette, Tectonophysics 431, 7 (2007)
A. Saichev, A. Helmstetter, D. Sornette, Pure Appl. Geophys. 162, 1113 (2005)
F.P. Schoenberg, A. Chu, A. Veen, J. Geophys. Res.: Solid Earth 115, B04309 (2010)
C. Scholz, Bull. Seismol. Soc. Am. 58, 1117 (1968)
D. Schorlemmer, M. Gerstenberger, Seismol. Res. Lett. 78, 30 (2007)
D. Schorlemmer, M.J. Werner, W. Marzocchi, T.H. Jordan, Y. Ogata, D.D. Jackson, S. Mak, D.A. Rhoades, M.C. Gerstenberger, N. Hirata, et al., Seismol. Res. Lett. 89, 1305 (2018)
S. Seif, A. Mignan, J.D. Zechar, M.J. Werner, S. Wiemer, J. Geophys. Res.: Solid Earth 122, 449 (2017)
R. Shcherbakov, D.L. Turcotte, J.B. Rundle, Geophys. Res. Lett. 31, L11613 (2004)
D. Sornette, Critical phenomena in natural sciences (chaos, fractals, self-organization and disorder: Concepts and tools), Springer Series in Synergetics (Springer, Heidelberg, 2006)
D. Sornette, G. Ouillon, Phys. Rev. Lett. 94, 038501 (2005)
D. Sornette, M.J. Werner, J. Geophys. Res.: Solid Earth 110, B08304 (2005)
D. Sornette, M.J. Werner, J. Geophys. Res.: Solid Earth 110, B09303 (2005)
S. Steacy, M. Gerstenberger, C. Williams, D. Rhoades, A. Christophersen, Geophys. J. Int. 196, 918 (2014)
S. Tinti, F. Mulargia, Bull. Seismol. Soc. Am. 77, 2125 (1987)
C.-Y. Tsai, G. Ouillon, D. Sornette, Bull. Seismol. Soc. Am. 102, 2128 (2012)
A. Veen, F.P. Schoenberg, J. Am. Stat. Assoc. 103, 614 (2008)
Q. Wang, D.D. Jackson, J. Zhuang, Geophys. Res. Lett. 37, L21307 (2010)
M.J. Werner, A. Helmstetter, D.D. Jackson, Y.Y. Kagan, Bull. Seismol. Soc. Am. 101, 1630 (2011)
J.D. Zechar, T.H. Jordan, Ann. Geophys. 53, 99 (2010)
J.D. Zechar, D. Schorlemmer, M.J. Werner, M.C. Gerstenberger, D.A. Rhoades, T.H. Jordan, Bull. Seismol. Soc. Am. 103, 787 (2013)
L. Zhang, M.J. Werner, K. Goda, Bull. Seismol. Soc. Am. 110, 191 (2020)
J. Zhuang, Y. Ogata, D. Vere-Jones, J. Am. Stat. Assoc. 97, 369 (2002)
J. Zhuang, Y. Ogata, D. Vere-Jones, J. Geophys. Res.: Solid Earth 109, B05301 (2004)
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Nandan, S., Kamer, Y., Ouillon, G. et al. Global models for short-term earthquake forecasting and predictive skill assessment. Eur. Phys. J. Spec. Top. 230, 425–449 (2021). https://doi.org/10.1140/epjst/e2020-000259-3
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DOI: https://doi.org/10.1140/epjst/e2020-000259-3