@article{fdi:010093108,
  title = {{D}o large earthquakes start with a precursory phase of slow slip ?},
  author = {{B}letery, {Q}uentin and {N}ocquet, {J}ean-{M}athieu},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n a recent publication, we showed that a stack of all {GPS} time series recorded before {M}agnitude ? 7.0 earthquakes suggests that large earthquakes start with a precursory phase of accelerating slow slip ({B}letery and {N}ocquet, 2023). {W}hile no peer-reviewed comment or publication has formally contradicted this result, informal discussion has emerged on various platforms. {W}e present here the different elements of discussion and address them through a series of tests. {I}n particular, it has been proposed that correcting {GPS} time series from network common-mode noise makes the signal vanish. {W}e confirm this result, but we show that this common-mode filtering procedure may inadvertently remove an existing tectonic signal. {M}oreover, the analysis of past records indicate that the likelihood that common-mode noise produces the signal we observe is well below 1 %. {A}dditionally, we find that the signal is maximum at the location of the impending earthquakes, and for a slip direction (rake angle) close to the one of the upcoming events. {T}he collective outcomes of these tests make very unlikely that the signal solely arises from noise. {E}ven though the results of our tests do not irrefutably demonstrate the existence of a precursory phase of slow slip, they do support its existence. {W}e hope that this study will motivate further work by others to provide a definite answer to the question of the tectonic origin of the observed signal and confirm or refute that large earthquakes start with a precursory phase of slow slip.},
  keywords = {{PACIFIQUE} ; {TOHOKU} {OKI}},
  booktitle = {},
  journal = {{S}eismica},
  volume = {3},
  numero = {2},
  pages = {en ligne [20 ]},
  ISSN = {2816-9387},
  year = {2024},
  DOI = {10.26443/seismica.v3i2.1383},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093108},
}