Articles | Volume 14, issue 5
Research article
23 May 2023
Research article |  | 23 May 2023

Probing environmental and tectonic changes underneath Mexico City with the urban seismic field

Laura A. Ermert, Enrique Cabral-Cano, Estelle Chaussard, Darío Solano-Rojas, Luis Quintanar, Diana Morales Padilla, Enrique A. Fernández-Torres, and Marine A. Denolle

Data sets

GEOSCOPE, French global network of broad band seismic stations Institut de physique du globe de Paris (IPGP) and Ecole et Observatoire des Sciences de la Terre de Strasbourg (EOST)

Global bathymetry and topography at 15 arc sec: SRTM15+ ( B. Tozer, D. T. Sandwell, W. H. F. Smith, C. Olson, J. R. Beale, and P. Wessel

Model code and software

Processing tools for seismic noise monitoring L. Ermert and M. Denolle

Monte Carlo model for seismic noise monitoring L. Ermert

lermert/ruido: release 0: testing (v0.0.0-alpha) L. Ermert

ants_2 - a lightweight ambient noise processing tool (Version prelim) L. Ermert and E. Kaestle

NoisePy: a new high-performance python tool for seismic ambient noise seismology ( C. Jiang and M. Denolle

PyGMT: A Python interface for the Generic Mapping Tools (v0.9.0) Leonardo Uieda, Dongdong Tian, Wei Ji Leong, William Schlitzer, Michael Grund, Max Jones, Yvonne Fröhlich, Liam Toney, Jiayuan Yao, Yohai Magen, Tong Jing-Hui, Kathryn Materna, Andre Belem, Tyler Newton, Abhishek Anant, Malte Ziebarth, Jamie Quinn, and Paul Wessel

Short summary
Mexico City is built on a unique ground containing the clay-rich sediments of the ancient lake Texcoco. Continuous imperceptible shaking of these deposits by city traffic and other sources allows us to monitor changes in the subsurface seismic wave speed. Wave speed varies seasonally, likely due to temperature and rain effects; it temporarily drops after large earthquakes then starts to recover. Throughout the studied period, it increased on average, which may be related to soil compaction.