Seismicity acceleration and clustering before the 2015 Mw 7.9 Gorkha earthquake, Nepal
DOI:
https://doi.org/10.26443/seismica.v4i1.1447Keywords:
Nepal, precursory signal, 2015 Gorkha earthquake, Template Matching, Earthquake Statistics, Earthquake swarmsAbstract
In the last decade, several observations of peculiar seismic and geodetic phases preceding large earthquakes have been documented. Despite being a posteriori, these observations provide a better understanding of the processes involved in the nucleation of earthquakes. In this study, we investigate the foreshocks and the pre-seismic phase of the M$_w$7.9 25 April 2015, Gorkha earthquake in Nepal by applying a matched-filter technique to its nucleation zone. We use the seismic signals of 1851 local earthquakes and the continuous signal recorded at the nearest station for the 6 years preceding the mainshock. The pre-seismic phase depicts a long-term increase of seismicity rate and several seismic swarms less than 20 km away from the mainshock epicenter. The longest swarm occurs one month before the Gorkha earthquake, lasts two weeks and consists of 38 repetitive earthquakes located at the northwestern edge of the rupture zone. Another increase in seismicity rate starts six days before the mainshock and includes small foreshocks that develop less than 10 kilometers from the future earthquake hypocenter. These observations suggest that the Gorkha earthquake was preceded by a pre-seismic phase related to a possible initiation of a slow slip with fluids involved at the northwestern boundary of the rupture zone.
References
Adhikari, L. B., Gautam, U. P., Koirala, B. P., Bhattarai, M., Kandel, T., Gupta, R. M., Timsina, C., Maharjan, N., Maharjan, K., Dahal, T., Hoste-Colomer, R., Cano, Y., Dandine, M., Guilhem, A., Merrer, S., Roudil, P., & Bollinger, L. (2015). The aftershock sequence of the 2015 April 25 Gorkha–Nepal earthquake. Geophysical Journal International, 203(3), 2119–2124. https://doi.org/10.1093/gji/ggv412 DOI: https://doi.org/10.1093/gji/ggv412
Adhikari, L. B., Laporte, M., Bollinger, L., Vergne, J., Lambotte, S., Koirala, B. P., Bhattarai, M., Timsina, C., Gupta, R. M., Wendling-Vazquez, N., Batteux, D., Lyon-Caen, H., Gaudemer, Y., Bernard, P., & Perrier, F. (2022). Seismically active structures of the Main Himalayan Thrust revealed before, during and after the 2015 M w 7.9 Gorkha earthquake in Nepal. Geophysical Journal International, 232(1), 451–471. https://doi.org/10.1093/gji/ggac281 DOI: https://doi.org/10.1093/gji/ggac281
Avouac, J.-P. (2003). Mountain building, erosion, and the seismic cycle in the Nepal Himalaya. Advances in Geophysics, 46, 1–80. DOI: https://doi.org/10.1016/S0065-2687(03)46001-9
Avouac, J.-P., Meng, L., Wei, S., Wang, T., & Ampuero, J.-P. (2015). Lower edge of locked Main Himalayan Thrust unzipped by the 2015 Gorkha earthquake. Nature Geoscience, 8(9), 708–711. https://doi.org/10.1038/ngeo2518 DOI: https://doi.org/10.1038/ngeo2518
Bai, L., Klemperer, S. L., Mori, J., Karplus, M. S., Ding, L., Liu, H., Li, G., Song, B., & Dhakal, S. (2019). Lateral variation of the Main Himalayan Thrust controls the rupture length of the 2015 Gorkha earthquake in Nepal. Science Advances, 5(6), eaav0723. https://doi.org/10.1126/sciadv.aav0723 DOI: https://doi.org/10.1126/sciadv.aav0723
Baillard, C., Lyon-Caen, H., Bollinger, L., Rietbrock, A., Letort, J., & Adhikari, L. B. (2017). Automatic analysis of the Gorkha earthquake aftershock sequence: evidences of structurally segmented seismicity. Geophysical Journal International, 209(2), 1111–1125. https://doi.org/10.1093/gji/ggx081 DOI: https://doi.org/10.1093/gji/ggx081
Ben-Zion, Y., & Zaliapin, I. (2020). Localization and coalescence of seismicity before large earthquakes. Geophysical Journal International, 223(1), 561–583. https://doi.org/10.1093/gji/ggaa315 DOI: https://doi.org/10.1093/gji/ggaa315
Beyreuther, M., Barsch, R., Krischer, L., Megies, T., Behr, Y., & Wassermann, J. (2010). ObsPy: A Python toolbox for seismology. Seismological Research Letters, 81(3), 530–533. DOI: https://doi.org/10.1785/gssrl.81.3.530
Bilham, R. (1995). Location and magnitude of the 1833 Nepal earthquake and its relation to the rupture zones of contiguous great Himalayan earthquakes. Current Science, 69(2), 101–128. https://www.jstor.org/stable/24097233
Bilham, R. (2019). Himalayan earthquakes: a review of historical seismicity and early 21st century slip potential. Geological Society, London, Special Publications, 483(1), 423–482. https://doi.org/10.1144/SP483.16 DOI: https://doi.org/10.1144/SP483.16
Bouchon, M., Durand, V., Marsan, D., Karabulut, H., & Schmittbuhl, J. (2013). The long precursory phase of most large interplate earthquakes. Nature Geoscience, 6(4), 299–302. https://doi.org/10.1038/ngeo1770 DOI: https://doi.org/10.1038/ngeo1770
Bouchon, M., Karabulut, H., Aktar, M., Özalaybey, S., Schmittbuhl, J., & Bouin, M.-P. (2011). Extended Nucleation of the 1999 Mw 7.6 Izmit Earthquake. Science, 331(6019), 877–880. https://doi.org/10.1126/science.1197341 DOI: https://doi.org/10.1126/science.1197341
Bouchon, M., Marsan, D., Durand, V., Campillo, M., Perfettini, H., Madariaga, R., & Gardonio, B. (2016). Potential slab deformation and plunge prior to the Tohoku, Iquique and Maule earthquakes. Nature Geoscience, 9(5), 380–383. https://doi.org/10.1038/ngeo2701 DOI: https://doi.org/10.1038/ngeo2701
Bouchon, M., Socquet, A., Marsan, D., Guillot, S., Durand, V., Gardonio, B., Campillo, M., Perfettini, H., Schmittbuhl, J., Renard, F., & Boullier, A.-M. (2022). Observation of rapid long-range seismic bursts in the Japan Trench subduction leading to the nucleation of the Tohoku earthquake. Earth and Planetary Science Letters, 594, 117696. https://doi.org/10.1016/j.epsl.2022.117696 DOI: https://doi.org/10.1016/j.epsl.2022.117696
Boullier, A.-M., France-Lanord, C., Dubessy, J., Adamy, J., & Champenois, M. (1991). Linked fluid and tectonic evolution in the High Himalaya mountains (Nepal). Contributions to Mineralogy and Petrology, 107(3), 358–372. https://doi.org/10.1007/BF00325104 DOI: https://doi.org/10.1007/BF00325104
Chen, X., & Shearer, P. (2011). Comprehensive analysis of earthquake source spectra and swarms in the Salton Trough, California. Journal of Geophysical Research: Solid Earth, 116(B9). DOI: https://doi.org/10.1029/2011JB008263
Duputel, Z., Vergne, J., Rivera, L., Wittlinger, G., Farra, V., & Hetényi, G. (2016). The 2015 Gorkha earthquake: A large event illuminating the Main Himalayan Thrust fault. Geophysical Research Letters, 43(6), 2517–2525. https://doi.org/10.1002/2016GL068083 DOI: https://doi.org/10.1002/2016GL068083
Ellsworth, W. L., & Bulut, F. (2018). Nucleation of the 1999 Izmit earthquake by a triggered cascade of foreshocks. Nature Geoscience, 11(7), 531–535. https://doi.org/10.1038/s41561-018-0145-1 DOI: https://doi.org/10.1038/s41561-018-0145-1
Galetzka, J., Melgar, D., Genrich, J. F., Geng, J., Owen, S., Lindsey, E. O., Xu, X., Bock, Y., Avouac, J.-P., Adhikari, L. B., Upreti, B. N., Pratt-Sitaula, B., Bhattarai, T. N., Sitaula, B. P., Moore, A., Hudnut, K. W., Szeliga, W., Normandeau, J., Fend, M., … Maharjan, N. (2015). Slip pulse and resonance of the Kathmandu basin during the 2015 Gorkha earthquake, Nepal. Science, 349(6252), 1091–1095. https://doi.org/10.1126/science.aac6383 DOI: https://doi.org/10.1126/science.aac6383
Gardner, J., & Knopoff, L. (1974). Is the sequence of earthquakes in Southern California, with aftershocks removed, Poissonian? Bulletin of the Seismological Society of America, 64(5), 1363–1367. DOI: https://doi.org/10.1785/BSSA0640051363
Gardonio, B., Campillo, M., Marsan, D., Lecointre, A., Bouchon, M., & Letort, J. (2019). Seismic Activity Preceding the 2011 Mw9.0 Tohoku Earthquake, Japan, Analyzed With Multidimensional Template Matching. Journal of Geophysical Research: Solid Earth, 124(7), 6815–6831. https://doi.org/10.1029/2018JB016751 DOI: https://doi.org/10.1029/2018JB016751
Gardonio, B., Jolivet, R., Calais, E., & Leclère, H. (2018). The April 2017 Mw6.5 Botswana Earthquake: An Intraplate Event Triggered by Deep Fluids. Geophysical Research Letters, 45(17), 8886–8896. https://doi.org/10.1029/2018GL078297 DOI: https://doi.org/10.1029/2018GL078297
Ghoshal, S., McQuarrie, N., Huntington, K. W., Robinson, D. M., & Ehlers, T. A. (2023). Testing erosional and kinematic drivers of exhumation in the central Himalaya. Earth and Planetary Science Letters, 609, 118087. https://doi.org/10.1016/j.epsl.2023.118087 DOI: https://doi.org/10.1016/j.epsl.2023.118087
Gomberg, J. (2018). Unsettled earthquake nucleation. Nature Geoscience, 11(7), 463–464. https://doi.org/10.1038/s41561-018-0149-x DOI: https://doi.org/10.1038/s41561-018-0149-x
Grandin, R., Doin, M.-P., Bollinger, L., Pinel-Puysségur, B., Ducret, G., Jolivet, R., & Sapkota, S. N. (2012). Long-term growth of the Himalaya inferred from interseismic InSAR measurement. Geology, 40(12), 1059–1062. https://doi.org/10.1130/G33154.1 DOI: https://doi.org/10.1130/G33154.1
Grandin, R., Vallée, M., Satriano, C., Lacassin, R., Klinger, Y., Simoes, M., & Bollinger, L. (2015). Rupture process of the M w = 7.9 2015 Gorkha earthquake (Nepal): Insights into Himalayan megathrust segmentation: RUPTURE PROCESS OF THE GORKHA EARTHQUAKE. Geophysical Research Letters, 42(20), 8373–8382. https://doi.org/10.1002/2015GL066044 DOI: https://doi.org/10.1002/2015GL066044
Gualandi, A., Avouac, J.-P., Galetzka, J., Genrich, J. F., Blewitt, G., Adhikari, L. B., Koirala, B. P., Gupta, R., Upreti, B. N., Pratt-Sitaula, B., & Liu-Zeng, J. (2017). Pre- and post-seismic deformation related to the 2015, M w 7.8 Gorkha earthquake, Nepal. Tectonophysics, 714–715, 90–106. https://doi.org/10.1016/j.tecto.2016.06.014 DOI: https://doi.org/10.1016/j.tecto.2016.06.014
Habermann, R. (1981). Precursory seismicity patterns: Stalking the mature seismic gap. Earthquake Prediction: An International Review, 4, 29–42. DOI: https://doi.org/10.1029/ME004p0029
Hainzl, S., & Marsan, D. (2008). Dependence of the Omori-Utsu law parameters on main shock magnitude: Observations and modeling. Journal of Geophysical Research: Solid Earth, 113(B10). DOI: https://doi.org/10.1029/2007JB005492
Hainzl, S., Zakharova, O., & Marsan, D. (2013). Impact of aseismic transients on the estimation of aftershock productivity parameters. Bulletin of the Seismological Society of America, 103(3), 1723–1732. DOI: https://doi.org/10.1785/0120120247
Hoste-Colomer, R., Bollinger, L., Lyon-Caen, H., Burtin, A., & Adhikari, L. B. (2017). Lateral structure variations and transient swarm revealed by seismicity along the Main Himalayan Thrust north of Kathmandu. Tectonophysics, 714–715, 107–116. https://doi.org/10.1016/j.tecto.2016.10.004 DOI: https://doi.org/10.1016/j.tecto.2016.10.004
Huang, H., Meng, L., Plasencia, M., Wang, Y., Wang, L., & Xu, M. (2017). Matched-filter detection of the missing pre-mainshock events and aftershocks in the 2015 Gorkha, Nepal earthquake sequence. Tectonophysics, 714, 71–81. DOI: https://doi.org/10.1016/j.tecto.2016.08.018
Kato, A., & Ben-Zion, Y. (2020). The generation of large earthquakes. Nature Reviews Earth & Environment, 2(1), 26–39. https://doi.org/10.1038/s43017-020-00108-w DOI: https://doi.org/10.1038/s43017-020-00108-w
Kato, A., & Nakagawa, S. (2014). Multiple slow-slip events during a foreshock sequence of the 2014 Iquique, Chile Mw 8.1 earthquake. Geophysical Research Letters, 41(15), 5420–5427. https://doi.org/10.1002/2014GL061138 DOI: https://doi.org/10.1002/2014GL061138
Kato, A., Obara, K., Igarashi, T., Tsuruoka, H., Nakagawa, S., & Hirata, N. (2012). Propagation of Slow Slip Leading Up to the 2011 Mw 9.0 Tohoku-Oki Earthquake. Science, 335(6069), 705–708. https://doi.org/10.1126/science.1215141 DOI: https://doi.org/10.1126/science.1215141
Kobayashi, T., Morishita, Y., & Yarai, H. (2015). Detailed crustal deformation and fault rupture of the 2015 Gorkha earthquake, Nepal, revealed from ScanSAR-based interferograms of ALOS-2. Earth, Planets and Space, 67(1), 201. https://doi.org/10.1186/s40623-015-0359-z DOI: https://doi.org/10.1186/s40623-015-0359-z
Koirala, B. P., Laporte, M., Bollinger, L., Batteux, D., Letort, J., Guilhem Trilla, A., Wendling-Vazquez, N., Bhattarai, M., Subedi, S., & Adhikari, L. B. (2023). Tectonic significance of the 2021 Lamjung, Nepal, mid-crustal seismic cluster. Earth, Planets and Space, 75(1), 165. https://doi.org/10.1186/s40623-023-01888-3 DOI: https://doi.org/10.1186/s40623-023-01888-3
Laporte, M, Bollinger, L., Lyon-Caen, H., Hoste-Colomer, R., Duverger, C., Letort, J., Riesner, M., Koirala, B. P., Bhattarai, M., Kandel, T., Timsina, C., & Adhikari, L. B. (2021). Seismicity in far western Nepal reveals flats and ramps along the Main Himalayan Thrust. Geophysical Journal International, 226(3), 1747–1763. https://doi.org/10.1093/gji/ggab159 DOI: https://doi.org/10.1093/gji/ggab159
Laporte, Marine. (2022). Contribution à l’amélioration de l’estimation de la profondeur hypocentrale à partir de réseaux régionaux ou globaux. Université Paris sciences et lettres.
Larsonnier, F., Rouillé, G., Bartoli, C., Klaus, L., & Begoff, P. (2019). Comparison on seismometer sensitivity following ISO 16063-11 standard. In 19th International Congress of Metrology (CIM2019) (p. 27003). EDP Sciences. DOI: https://doi.org/10.1051/metrology/201927003
Lemonnier, C., Marquis, G., Perrier, F., Avouac, J.-P., Chitrakar, G., Kafle, B., Sapkota, S., Gautam, U., Tiwari, D., & Bano, M. (1999). Electrical structure of the Himalaya of central Nepal: High conductivity around the mid-crustal ramp along the MHT. Geophysical Research Letters, 26(21), 3261–3264. https://doi.org/10.1029/1999GL008363 DOI: https://doi.org/10.1029/1999GL008363
Lengliné, O., Boubacar, M., & Schmittbuhl, J. (2017). Seismicity related to the hydraulic stimulation of GRT1, Rittershoffen, France. Geophysical Journal International, 208(3), 1704–1715. https://doi.org/10.1093/gji/ggw490 DOI: https://doi.org/10.1093/gji/ggw490
Letort, J., Bollinger, L., Lyon-Caen, H., Guilhem, A., Cano, Y., Baillard, C., & Adhikari, L. B. (2016). Teleseismic depth estimation of the 2015 Gorkha Nepal aftershocks. Geophysical Journal International, 207(3), 1584–1595. https://doi.org/10.1093/gji/ggw364 DOI: https://doi.org/10.1093/gji/ggw364
Lindsey, E. O., Almeida, R., Mallick, R., Hubbard, J., Bradley, K., Tsang, L. L., Liu, Y., Burgmann, R., & Hill, E. M. (2018). Structural control on downdip locking extent of the Himalayan megathrust. Journal of Geophysical Research: Solid Earth, 123(6), 5265–5278. DOI: https://doi.org/10.1029/2018JB015868
Lindsey, E. O., Natsuaki, R., Xu, X., Shimada, M., Hashimoto, M., Melgar, D., & Sandwell, D. T. (2015). Line-of-sight displacement from ALOS-2 interferometry: Mw 7.8 Gorkha Earthquake and Mw 7.3 aftershock. Geophysical Research Letters, 42(16), 6655–6661. https://doi.org/10.1002/2015GL065385 DOI: https://doi.org/10.1002/2015GL065385
Marsan, D., & Lengline, O. (2008). Extending earthquakes’ reach through cascading. Science, 319(5866), 1076–1079. DOI: https://doi.org/10.1126/science.1148783
Marsan, D., & Wyss, M. (2011). Seismicity rate changes. Community Online Resource for Statistical Seismicity Analysis.
Martin, S. S., Hough, S. E., & Hung, C. (2015). Ground Motions from the 2015 Mw 7.8 Gorkha, Nepal, Earthquake Constrained by a Detailed Assessment of Macroseismic Data. Seismological Research Letters, 86(6), 1524–1532. https://doi.org/10.1785/0220150138 DOI: https://doi.org/10.1785/0220150138
Martı́nez-Garzón, P., & Poli, P. (2024). Cascade and pre-slip models oversimplify the complexity of earthquake preparation in nature. Communications Earth & Environment, 5(1), 120. DOI: https://doi.org/10.1038/s43247-024-01285-y
Mendoza, M. M., Ghosh, A., Karplus, M. S., Klemperer, S. L., Sapkota, S. N., Adhikari, L. B., & Velasco, A. (2019). Duplex in the Main Himalayan Thrust illuminated by aftershocks of the 2015 Mw 7.8 Gorkha earthquake. Nature Geoscience, 12(12), 1018–1022. https://doi.org/10.1038/s41561-019-0474-8 DOI: https://doi.org/10.1038/s41561-019-0474-8
Mesimeri, M., Karakostas, V., Papadimitriou, E., & Tsaklidis, G. (2019). Characteristics of earthquake clusters: Application to western Corinth Gulf (Greece). Tectonophysics, 767, 228160. DOI: https://doi.org/10.1016/j.tecto.2019.228160
Mignan, A. (2014). The debate on the prognostic value of earthquake foreshocks: A meta-analysis. Scientific Reports, 4(1), 4099. DOI: https://doi.org/10.1038/srep04099
Nábělek, J., Hetényi, G., Vergne, J., Sapkota, S., Kafle, B., Jiang, M., Su, H., Chen, J., Huang, B.-S., & Team, the H.-C. (2009). Underplating in the Himalaya-Tibet Collision Zone Revealed by the Hi-CLIMB Experiment. Science, 325(5946), 1371–1374. https://doi.org/10.1126/science.1167719 DOI: https://doi.org/10.1126/science.1167719
Nandan, S., Ouillon, G., Wiemer, S., & Sornette, D. (2017). Objective estimation of spatially variable parameters of epidemic type aftershock sequence model: Application to California. Journal of Geophysical Research: Solid Earth, 122(7), 5118–5143. DOI: https://doi.org/10.1002/2016JB013266
Nishikawa, T., & Ide, S. (2018). Recurring Slow Slip Events and Earthquake Nucleation in the Source Region of the M 7 Ibaraki-Oki Earthquakes Revealed by Earthquake Swarm and Foreshock Activity. Journal of Geophysical Research: Solid Earth, 123(9), 7950–7968. https://doi.org/10.1029/2018JB015642 DOI: https://doi.org/10.1029/2018JB015642
Ogata, Y. (1988). Statistical models for earthquake occurrences and residual analysis for point processes. Journal of the American Statistical Association, 83(401), 9–27. DOI: https://doi.org/10.1080/01621459.1988.10478560
Pandey, M. R. (1985). Seismic model of central and eastern Lesser Himalaya of Nepal. Journal of Nepal Geological Society, 3, 1–11. https://doi.org/10.3126/jngs.v3i0.32655 DOI: https://doi.org/10.3126/jngs.v3i0.32655
Passarelli, L., Rivalta, E., Jónsson, S., Hensch, M., Metzger, S., Jakobsdóttir, S. S., Maccaferri, F., Corbi, F., & Dahm, T. (2018). Scaling and spatial complementarity of tectonic earthquake swarms. Earth and Planetary Science Letters, 482, 62–70. DOI: https://doi.org/10.1016/j.epsl.2017.10.052
Riesner, M., Bollinger, L., Rizza, M., Klinger, Y., Karakaş, Ç., Sapkota, S. N., Shah, C., Guérin, C., & Tapponnier, P. (2023). Surface rupture and landscape response in the middle of the great Mw 8.3 1934 earthquake mesoseismal area: Khutti Khola site. Scientific Reports, 13(1), 4566. https://doi.org/10.1038/s41598-023-30697-7 DOI: https://doi.org/10.1038/s41598-023-30697-7
Roland, E., & McGuire, J. J. (2009). Earthquake swarms on transform faults. Geophysical Journal International, 178(3), 1677–1690. DOI: https://doi.org/10.1111/j.1365-246X.2009.04214.x
Ruiz, S., Metois, M., Fuenzalida, A., Ruiz, J., Leyton, F., Grandin, R., Vigny, C., Madariaga, R., & Campos, J. (2014). Intense foreshocks and a slow slip event preceded the 2014 Iquique Mw 8.1 earthquake. Science, 345(6201), 1165–1169. https://doi.org/10.1126/science.1256074 DOI: https://doi.org/10.1126/science.1256074
Socquet, A., Valdes, J. P., Jara, J., Cotton, F., Walpersdorf, A., Cotte, N., Specht, S., Ortega-Culaciati, F., Carrizo, D., & Norabuena, E. (2017). An 8 month slow slip event triggers progressive nucleation of the 2014 Chile megathrust. Geophysical Research Letters, 44(9), 4046–4053. https://doi.org/10.1002/2017GL073023 DOI: https://doi.org/10.1002/2017GL073023
Subedi, S., Hetényi, G., Vergne, J., Bollinger, L., Lyon-Caen, H., Farra, V., Adhikari, L. B., & Gupta, R. M. (2018). Imaging the Moho and the Main Himalayan Thrust in Western Nepal with receiver functions. Geophysical Research Letters, 45(24), 13–222. DOI: https://doi.org/10.1029/2018GL080911
Utsu, T., Ogata, Y., & others. (1995). The centenary of the Omori formula for a decay law of aftershock activity. Journal of Physics of the Earth, 43(1), 1–33. DOI: https://doi.org/10.4294/jpe1952.43.1
Wang, X., Wei, S., & Wu, W. (2017). Double-ramp on the Main Himalayan Thrust revealed by broadband waveform modeling of the 2015 Gorkha earthquake sequence. Earth and Planetary Science Letters, 473, 83–93. https://doi.org/10.1016/j.epsl.2017.05.032 DOI: https://doi.org/10.1016/j.epsl.2017.05.032
Wesnousky, S. G., Kumahara, Y., Chamlagain, D., Pierce, I. K., Karki, A., & Gautam, D. (2017). Geological observations on large earthquakes along the Himalayan frontal fault near Kathmandu, Nepal. Earth and Planetary Science Letters, 457, 366–375. https://doi.org/10.1016/j.epsl.2016.10.006 DOI: https://doi.org/10.1016/j.epsl.2016.10.006
Yamada, M., Kandel, T., Tamaribuchi, K., & Ghosh, A. (2019). 3D Fault Structure Inferred from a Refined Aftershock Catalog for the 2015 Gorkha Earthquake in Nepal. Bulletin of the Seismological Society of America, 110(1), 26–37. https://doi.org/10.1785/0120190075 DOI: https://doi.org/10.1785/0120190075
Zaliapin, I., & Ben-Zion, Y. (2022). Perspectives on clustering and declustering of earthquakes. Seismological Research Letters, 93(1), 386–401. DOI: https://doi.org/10.1785/0220210127
Zhang, Q., & Shearer, P. M. (2016). A new method to identify earthquake swarms applied to seismicity near the San Jacinto Fault, California. Geophysical Journal International, 205(2), 995–1005. DOI: https://doi.org/10.1093/gji/ggw073
Zhao, B., Bürgmann, R., Wang, D., Tan, K., Du, R., & Zhang, R. (2017). Dominant Controls of Downdip Afterslip and Viscous Relaxation on the Postseismic Displacements Following the Mw7.9 Gorkha, Nepal, Earthquake. Journal of Geophysical Research: Solid Earth, 122(10), 8376–8401. https://doi.org/10.1002/2017JB014366 DOI: https://doi.org/10.1002/2017JB014366
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