Articles | Volume 12, issue 7
https://doi.org/10.5194/se-12-1661-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-12-1661-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Jul 2021
Research article |
| 21 Jul 2021
| 21 Jul 2021
Present-day geodynamics of the Western Alps: new insights from earthquake mechanisms
Marguerite Mathey
CORRESPONDING AUTHOR
University Grenoble Alpes, University Savoie Mont
Blanc, CNRS, IRD, IFSTTAR, ISTerre, Grenoble, 38000, France
Christian Sue
University Grenoble Alpes, University Savoie Mont
Blanc, CNRS, IRD, IFSTTAR, ISTerre, Grenoble, 38000, France
Chrono-Environnement Besançon, OSU THETA, University Bourgogne-Franche-Comté, Besançon, 25000, France
Colin Pagani
Univ Lyon, Université Lyon 1, Ens de Lyon, CNRS, Lyon, 69000,
France
Stéphane Baize
IRSN, PSE-ENV/SCAN/BERSSIN, BP 17, Fontenay-aux-Roses,
92262, France
Andrea Walpersdorf
University Grenoble Alpes, University Savoie Mont
Blanc, CNRS, IRD, IFSTTAR, ISTerre, Grenoble, 38000, France
Thomas Bodin
Univ Lyon, Université Lyon 1, Ens de Lyon, CNRS, Lyon, 69000,
France
Laurent Husson
University Grenoble Alpes, University Savoie Mont
Blanc, CNRS, IRD, IFSTTAR, ISTerre, Grenoble, 38000, France
Estelle Hannouz
University Grenoble Alpes, University Savoie Mont
Blanc, CNRS, IRD, IFSTTAR, ISTerre, Grenoble, 38000, France
Bertrand Potin
Departamento de Geofìsica, Universidad de Chile, Blanco
Encalada 2002, Santiago, 8320000, Chile
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Cited articles
Alvarez-Gómez, J. A.: FMC – Earthquake focal mechanisms data management,
cluster and classification, SoftwareX, 9, 299–307,
https://doi.org/10.1016/j.softx.2019.03.008, 2019.
Baran, R., Friedrich, A. M., and Schlunegger, F.: The late Miocene to
Holocene erosion pattern of the Alpine foreland basin reflects Eurasian slab
unloading beneath the western Alps rather than global climate change,
Lithosphere, 6, 124–131, 2014.
Baroux, E., Béthoux, N., and Bellier, O.: Analyses of the stress field in
southeastern France from earthquake focal mechanisms, Geophys. J. Int.,
145, 336–348, https://doi.org/10.1046/j.1365-246x.2001.01362.x, 2001.
Bauve, V., Plateaux, R., Rolland, Y., Sanchez, G., Bethoux, N., Delouis, B., and Darnault, R.: Long-lasting transcurrent tectonics in SW Alps evidenced
by Neogene to present-day stress fields, Tectonophysics, 621, 85–100,
https://doi.org/10.1016/j.tecto.2014.02.006, 2014.
Bertrand, A. and Sue, C.: Reconciling late faulting over the whole Alpine
belt: from structural analysis to geochronological constrains, Swiss J.
Geosci., 110, 565–580, 2017.
Béthoux, N., Fréchet, J., Guyoton, F., Thouvenot, F., Cattaneo, M.,
Eva, C., Nicolas, M., and Granet, M.: A closing Ligurian Sea?, Pure Appl.
Geophys., 139, 179–194, https://doi.org/10.1007/BF00876326, 1992.
Bilau, A., Rolland, Y., Schwartz, S., Godeau, N., Guihou, A., Deschamps, P., Brigaud, B., Noret, A., Dumont, T., and Gautheron, C.: Extensional reactivation of the Penninic frontal thrust 3 Myr ago as evidenced by U–Pb dating on calcite in fault zone cataclasite, Solid Earth, 12, 237–251, https://doi.org/10.5194/se-12-237-2021, 2021.
Bodin, T., Salmon, M., Kennett, B. L. N., and Sambridge, M.: Probabilistic
surface reconstruction from multiple data sets: An example for the
Australian Moho, J. Geophys. Res.-Sol. Ea., 117, B10307,
https://doi.org/10.1029/2012JB009547, 2012.
Calais, E., Nocquet, J.-M., Jouanne, F., and Tardy, M.: Current strain regime
in the Western Alps from continuous Global Positioning System measurements,
1996–2001, Geology, 30, 651–654,
https://doi.org/10.1130/0091-7613(2002)030<0651:CSRITW>2.0.CO;2,
2002.
Cara, M., Cansi, Y., Schlupp, A., Arroucau, P., Béthoux, N., Beucler,
E., Bruno, S., Calvet, M., Chevrot, S., Deboissy, A., Delouis, B., Denieul,
M., Deschamps, A., Doubre, C., Fréchet, J., Godey, S., Golle, O.,
Grunberg, M., Guilbert, J., Haugmard, M., Jenatton, L., Lambotte, S.,
Leobal, D., Maron, C., Mendel, V., Merrer, S., Macquet, M., Mignan, A.,
Mocquet, A., Nicolas, M., Perrot, J., Potin, B., Sanchez, O., Santoire,
J.-P., Sèbe, O., Sylvander, M., Thouvenot, F., Woerd, J. V. D., and
Woerd, K. V. D.: SI-Hex: a new catalogue of instrumental seismicity for
metropolitan France, Bull. Société Géologique Fr., 186,
3–19, https://doi.org/10.2113/gssgfbull.186.1.3, 2015.
Cauzzi, C. and Clinton, J.: A high- and low-noise model for high-quality
strong-motion accelerometer stations, Earthq. Spectra, 29, 85–102,
https://doi.org/10.1193/1.4000107, 2013.
Champagnac, J. D., Sue, C., Delacou, B., Tricart, P., Allanic, C., and
Burkhard, M.: Miocene lateral extrusion in the inner western Alps revealed
by dynamic fault analysis, Tectonics, 25, TC3014, https://doi.org/10.1029/2004TC001779, 2006.
Champagnac, J. D., Molnar, P., Anderson, R. S., Sue, C., and Delacou, B.:
Quaternary erosion-induced isostatic rebound in the western Alps, Geology,
35, 195–198, https://doi.org/10.1130/G23053A.1, 2007.
Champagnac, J.-D., Molnar, P., Sue, C., and Herman, F.: Tectonics, climate,
and mountain topography, J. Geophys. Res.-Sol. Ea., 117, B02403, https://doi.org/10.1029/2011JB008348, 2012.
Chéry, J., Genti, M., and Vernant, P.: Ice cap melting and low-viscosity
crustal root explain the narrow geodetic uplift of the Western Alps,
Geophys. Res. Lett., 43, 3193–3200, https://doi.org/10.1002/2016GL067821, 2016.
Choblet, G., Husson, L., and Bodin, T.: Probabilistic surface
reconstruction of coastal sea level rise during the twentieth century,
J. Geophys. Res.-Sol. Ea., 119, 9206–9236, 2014.
Coward, M. and Dietrich, D.: Alpine tectonics – an overview, Geol. Soc.
Lond. Spec. Publ., 45, 1–29, 1989.
D'Agostino, N., Avallone, A., Cheloni, D., D'Anastasio, E., Mantenuto, S., and Selvaggi, G.: Active tectonics of the Adriatic region from GPS and
earthquake slip vectors, J. Geophys. Res.-Sol. Ea., 113, B12413,
https://doi.org/10.1029/2008JB005860, 2008.
D'Amico, S.: Moment tensor solutions: A useful tool for seismotectonics,
Springer, Cham, Switzerland, 2018.
Delacou, B., Sue, C., Champagnac, J.-D., and Burkhard, M.: Present-day
geodynamics in the bend of the western and central Alps as constrained by
earthquake analysis, Geophys. J. Int., 158, 753–774,
https://doi.org/10.1111/j.1365-246X.2004.02320.x, 2004.
Delacou, B., Sue, C., Champagnac, J.-D., and Burkhard, M.: Origin of the
current stress field in the western/central Alps: role of gravitational
re-equilibration constrained by numerical modelling, Geol. Soc. Lond. Spec.
Publ., 243, 295–310, 2005.
Devoti, R., Riguzzi, F., Cuffaro, M., and Doglioni, C.: New GPS constraints
on the kinematics of the Apennines subduction, Earth Planet. Sci. Lett.,
273, 163–174, https://doi.org/10.1016/j.epsl.2008.06.031, 2008.
Diehl, T., Husen, S., Kissling, E., and Deichmann, N.: High-resolution
3-DP-wave model of the Alpine crust, Geophys. J. Int., 179, 1133–1147, 2009.
Diehl, T., Clinton, J., Deichmann, N., Cauzzi, C., Kästli, P., Kraft, T., Molinari, I., Böse, M., Michel., C., Hobiger, M., Haslinger, F., Fäh, D., and Wiemer, S.: Earthquakes in Switzerland and surrounding regions
during 2015 and 2016, Swiss J. Geosci., 111, 221–244, 2018.
Diehl, T., Clinton, J., Cauzzi, C., Kraft, T., Kästli, P., Deichmann, N., Massin, F., Grigoli, F., Molinari, I., Böse, M., Hobiger, M., Haslinger, F., Fäh, D., and Wiemer, S.: Earthquakes in Switzerland and surrounding regions
during 2017 and 2018, Swiss J. Geosci., 114, 1–29, 2021.
Eva, E., Solarino, S., Eva, C., and Neri, G.: Stress tensor orientation
derived from fault plane solutions in the southwestern Alps, J. Geophys. Res.-Sol. Ea., 102, 8171–8185, https://doi.org/10.1029/96JB02725, 1997.
Eva, E., Pastore, S., and Deichmann, N.: Evidence for ongoing extensional
deformation in the western Swiss Alps and thrust-faulting in the
southwestern Alpine foreland, J. Geodyn., 26, 27–43,
https://doi.org/10.1016/S0264-3707(97)00022-7, 1998.
Eva, E., Malusà, M., and Solarino, S.: Seismotectonics at the transition
between opposite-dipping slabs (western Alpine region), Tectonics,
39, e2020TC006086, https://doi.org/10.1029/2020TC006086, 2020.
Faccenna, C. and Becker, T. W.: Topographic expressions of mantle
dynamics in the Mediterranean, Earth-Sci. Rev., 209, 103327, https://doi.org/10.1016/j.earscirev.2020.103327, 2020.
Fox, M., Herman, F., Kissling, E., and Willett, S. D.: Rapid exhumation in
the Western Alps driven by slab detachment and glacial erosion, Geology,
43, 379–382, 2015.
Frohlich, C.: Triangle diagrams: ternary graphs to display similarity and
diversity of earthquake focal mechanisms, Phys. Earth Planet. Inter.,
75, 193–198, 1992.
Gephart, J. W.: FMSI: A fortran program for inverting fault/slickenside and
earthquake focal mechanism data to obtain the regional stress tensor,
Comput. Geosci., 16, 953–989, https://doi.org/10.1016/0098-3004(90)90105-3, 1990.
Gudmundsson, G.: An order-of-magnitude estimate of the current uplift-rates
in Switzerland caused by the Würm Alpine deglaciation, Eclogae Geol.
Helv., 87, 545–557, 1994.
Handy, M. R., M. Schmid, S., Bousquet, R., Kissling, E., and Bernoulli, D.:
Reconciling plate-tectonic reconstructions of Alpine Tethys with the
geological–geophysical record of spreading and subduction in the Alps,
Earth-Sci. Rev., 102, 121–158, https://doi.org/10.1016/j.earscirev.2010.06.002,
2010.
Hanks, T. C. and Kanamori, H.: A moment magnitude scale, J. Geophys. Res.-Sol. Ea., 84, 2348–2350, https://doi.org/10.1029/JB084iB05p02348, 1979.
Hardebeck, J. L. and Hauksson, E.: Stress Orientations Obtained from
Earthquake Focal Mechanisms: What Are Appropriate Uncertainty Estimates?,
Bull. Seismol. Soc. Am., 91, 250–262, https://doi.org/10.1785/0120000032, 2001.
Hardebeck, J. L. and Michael, A. J.: Damped regional-scale stress
inversions: Methodology and examples for southern California and the
Coalinga aftershock sequence, J. Geophys. Res.-Sol. Ea., 111, B11310,
https://doi.org/10.1029/2005JB004144, 2006.
Hardebeck, J. L. and Shearer, P. M.: A New Method for Determining
First-Motion Focal Mechanisms, Bull. Seismol. Soc. Am., 92, 2264–2276,
https://doi.org/10.1785/0120010200, 2002.
Hawkins, R., Husson, L., Choblet, G., Bodin, T., and Pfeffer, J.: Virtual
tide gauges for predicting relative sea level rise, J. Geophys. Res.-Sol. Ea., 124, 13367–13391, 2019a.
Hawkins, R., Bodin, T., Sambridge, M., Choblet, G., and Husson, L.:
Trans-dimensional surface reconstruction with different classes of
parameterization, Geochem. Geophy. Geosy., 20, 505–529,
2019b.
Husson, L., Bodin, T., Spada, G., Choblet, G., and Kreemer, C.: Bayesian
surface reconstruction of geodetic uplift rates: Mapping the global
fingerprint of Glacial Isostatic Adjustment, J. Geodyn., 122, 25–40,
https://doi.org/10.1016/j.jog.2018.10.002, 2018.
Kästle, E. D., El-Sharkawy, A., Boschi, L., Meier, T., Rosenberg, C.,
Bellahsen, N., Cristiano, L., and Weidle, C.: Surface Wave Tomography of the
Alps Using Ambient-Noise and Earthquake Phase Velocity Measurements, J.
Geophys. Res.-Sol. Ea., 123, 1770–1792, https://doi.org/10.1002/2017JB014698,
2018.
Kastrup, U., Zoback, M. L., Deichmann, N., Evans, K. F., Giardini, D., and
Michael, A. J.: Stress field variations in the Swiss Alps and the northern
Alpine foreland derived from inversion of fault plane solutions, J. Geophys. Res.-Sol. Ea., 109, B01402, https://doi.org/10.1029/2003JB002550, 2004.
Kissling, E., Schmid, S. M., Lippitsch, R., Ansorge, J., and
Fügenschuh, B.: Lithosphere structure and tectonic evolution of the
Alpine arc: new evidence from high-resolution teleseismic tomography,
Geological Society, London, Memoirs, 32, 129–145, 2006.
Kostrov, V. V.: Seismic moment and energy of earthquakes, and seismic flow
of rock, Izv. Acad. Sci. USSR Phys. Solid Earth Engl. Transl., 1, 23–44, 1974.
Larroque, C., Delouis, B., Sage, F., Régnier, M., Béthoux, N.,
Courboulex, F., and Deschamps, A.: The sequence of moderate-size earthquakes
at the junction of the Ligurian basin and the Corsica margin (western
Mediterranean): The initiation of an active deformation zone revealed?,
Tectonophysics, 676, 135–147, https://doi.org/10.1016/j.tecto.2016.03.027, 2016.
Laurendeau, A., Clement, C., and Scotti, O.: A unified Mw-based earthquake catalog for metropolitan France consistent with European catalogs,
Montréal, available at:
https://hal.archives-ouvertes.fr/hal-02635592 (last access: 16 August 2020), 2019.
Lippitsch, R., Kissling, E., and Ansorge, J.: Upper mantle structure beneath
the Alpine orogen from high-resolution teleseismic tomography, J. Geophys. Res.-Sol. Ea., 108, 2376, https://doi.org/10.1029/2002JB002016, 2003.
Lund, B. and Townend, J.: Calculating horizontal stress orientations with
full or partial knowledge of the tectonic stress tensor, Geophys. J. Int.,
170, 1328–1335, https://doi.org/10.1111/j.1365-246X.2007.03468.x, 2007.
Lyon-Caen, H. and Molnar, P.: Constraints on the deep structure and dynamic
processes beneath the Alps and adjacent regions from an analysis of gravity
anomalies, Geophys. J. Int., 99, 19–32, 1989.
Malinverno, A. and Briggs, V. A.: Expanded uncertainty quantification in
inverse problems: Hierarchical Bayes and empirical Bayes, Geophysics, 69,
1005–1016, 2004.
Malusà, M. G., Zhao, L., Eva, E., Solarino, S., Paul, A., Guillot, S.,
Schwartz, S., Dumont, T., Aubert, C., Salimbeni, S., Pondrelli, S., Wang, Q., and Zhu, R.: Earthquakes in the western Alpine mantle wedge, Gondwana Res.,
44, 89–95, https://doi.org/10.1016/j.gr.2016.11.012, 2017.
Marchant, R. H. and Stampfli, G. M.: Subduction of continental crust in the
Western Alps, Tectonophysics, 269, 217–235,
https://doi.org/10.1016/S0040-1951(96)00170-9, 1997.
Martínez-Garzón, P., Kwiatek, G., Ickrath, M., and Bohnhoff, M.:
MSATSI: A MATLAB Package for Stress Inversion Combining Solid Classic
Methodology, a New Simplified User-Handling, and a Visualization Tool,
Seismol. Res. Lett., 85, 896–904, https://doi.org/10.1785/0220130189, 2014.
Masson, C., Mazzotti, S., Vernant, P., and Doerflinger, E.: Extracting small deformation beyond individual station precision from dense Global Navigation Satellite System (GNSS) networks in France and western Europe, Solid Earth, 10, 1905–1920, https://doi.org/10.5194/se-10-1905-2019, 2019.
Mathey, M., Walpersdorf, A., Sue, C., Baize, S., and Deprez, A.: Seismogenic
potential of the High Durance Fault constrained by 20 yr of GNSS
measurements in the Western European Alps, Geophys. J. Int., 222,
2136–2146, https://doi.org/10.1093/gji/ggaa292, 2020.
Maurer, H. R., Burkhard, M., Deichmann, N., and Green, A. G.: Active
tectonism in the central Alps: contrasting stress regimes north and south of
the Rhone Valley, Terra Nova, 9, 91–94,
https://doi.org/10.1111/j.1365-3121.1997.tb00010.x, 1997.
Mazzotti, S., Jomard, H., and Masson, F.: Processes and deformation rates
generating seismicity in metropolitan France and conterminous Western
Europe, BSGF – Earth Sci. Bull., 191, 19, https://doi.org/10.1051/bsgf/2020019, 2020.
Mey, J., Scherler, D., Wickert, A. D., Egholm, D. L., Tesauro, M.,
Schildgen, T. F., and Strecker, M. R.: Glacial isostatic uplift of the
European Alps, Nat. Commun., 7, 13382, https://doi.org/10.1038/ncomms13382, 2016.
Nocquet, J.-M. and Calais, E.: Geodetic Measurements of Crustal Deformation
in the Western Mediterranean and Europe, Pure Appl. Geophys., 161,
661–681, https://doi.org/10.1007/s00024-003-2468-z, 2004.
Nocquet, J.-M., Sue, C., Walpersdorf, A., Tran, T., Lenôtre, N.,
Vernant, P., Cushing, M., Jouanne, F., Masson, F., Baize, S., Chéry, J., and van der Beek, P. A.: Present-day uplift of the western Alps, Sci. Rep.,
6, 28404, https://doi.org/10.1038/srep28404, 2016.
Paul, A., Cattaneo, M., Thouvenot, F., Spallarossa, D., Béthoux, N., and
Fréchet, J.: A three-dimensional crustal velocity model of the
southwestern Alps from local earthquake tomography, J. Geophys. Res.-Sol. Ea., 106, 19367–19389, https://doi.org/10.1029/2001JB000388, 2001.
Piromallo, C. and Faccenna, C.: How deep can we find the traces of Alpine
subduction?, Geophys. Res. Lett., 31, L06605, https://doi.org/10.1029/2003GL019288, 2004.
Potin, B.: Les Alpes occidentales: tomographie, localisation de séismes
et topographie du Moho, thesis, Grenoble Alpes, 1 July, available
at: http://www.theses.fr/2016GREAU022 (last access: 27 February 2020), 2016.
RESIF: RESIF-RLBP French Broad-band network, RESIF-RAP strong motion network
and other seismic stations in metropolitan France [data set], RESIF –
Réseau Sismologique et géodésique Français,
https://doi.org/10.15778/RESIF.FR, 1995.
Sánchez, L., Völksen, C., Sokolov, A., Arenz, H., and Seitz, F.: Present-day surface deformation of the Alpine region inferred from geodetic techniques, Earth Syst. Sci. Data, 10, 1503–1526, https://doi.org/10.5194/essd-10-1503-2018, 2018.
Scafidi, D., Barani, S., De Ferrari, R., Ferretti, G., Pasta, M., Pavan, M., Spallarossa, D., and Turino, C.: Seismicity of Northwestern Italy during the last 30 years, J. Seismol., 19, 201–218, 2015.
Serpelloni, E., Anzidei, M., Baldi, P., Casula, G., and Galvani, A.: Crustal
velocity and strain-rate fields in Italy and surrounding regions: new
results from the analysis of permanent and non-permanent GPS networks,
Geophys. J. Int., 161, 861–880, https://doi.org/10.1111/j.1365-246X.2005.02618.x,
2005.
Serpelloni, E., Vannucci, G., Pondrelli, S., Argnani, A., Casula, G.,
Anzidei, M., Baldi, P., and Gasperini, P.: Kinematics of the Western
Africa-Eurasia plate boundary from focal mechanisms and GPS data, Geophys.
J. Int., 169, 1180–1200, https://doi.org/10.1111/j.1365-246X.2007.03367.x, 2007.
Serpelloni, E., Faccenna, C., Spada, G., Dong, D., and Williams, S. D. P.:
Vertical GPS ground motion rates in the Euro-Mediterranean region: New
evidence of velocity gradients at different spatial scales along the
Nubia-Eurasia plate boundary, J. Geophys. Res.-Sol. Ea., 118,
6003–6024, https://doi.org/10.1002/2013JB010102, 2013.
Smith, W. H. F. and Wessel, P.: Gridding with continuous curvature
splines in tension, Geophysics, 55, 293–305, 1990.
Solarino, S., Malusà, M. G., Eva, E., Guillot, S., Paul, A., Schwartz,
S., Zhao, L., Aubert, C., Dumont, T., Pondrelli, S., Salimbeni, S., Wang,
Q., Xu, X., Zheng, T., and Zhu, R.: Mantle wedge exhumation beneath the
Dora-Maira (U)HP dome unravelled by local earthquake tomography (Western
Alps), Lithos, 296–299, 623–636, https://doi.org/10.1016/j.lithos.2017.11.035, 2018.
Spada, M., Bianchi, I., Kissling, E., Agostinetti, N. P., and Wiemer, S.:
Combining controlled-source seismology and receiver function information to
derive 3-D Moho topography for Italy, Geophys. J. Int., 194, 1050–1068,
https://doi.org/10.1093/gji/ggt148, 2013.
Stampfli, G., Mosar, J., Marquer, D., Marchant, R., Baudin, T., and Borel,
G.: Subduction and obduction processes in the Swiss Alps, Tectonophysics,
296, 159–204, 1998.
Sternai, P., Herman, F., Champagnac, J.-D., Fox, M., Salcher, B., and
Willett, S. D.: Pre-glacial topography of the European Alps, Geology,
40, 1067–1070, https://doi.org/10.1130/G33540.1, 2012.
Sternai, P., Sue, C., Husson, L., Serpelloni, E., Becker, T. W., Willett, S.
D., Faccenna, C., Di Giulio, A., Spada, G., Jolivet, L., Valla, P., Petit,
C., Nocquet, J.-M., Walpersdorf, A., and Castelltort, S.: Present-day uplift
of the European Alps: Evaluating mechanisms and models of their relative
contributions, Earth-Sci. Rev., 190, 589–604,
https://doi.org/10.1016/j.earscirev.2019.01.005, 2019.
Sue, C. and Tricart, P.: Late alpine brittle extension above the Frontal
Pennine Thrust near Briançon, western Alps, Eclogae Geol. Helv.,
92, 171–181, 1999.
Sue, C. and Tricart, P.: Neogene to ongoing normal faulting in the inner
western Alps: A major evolution of the late alpine tectonics, Tectonics,
22, 1050, https://doi.org/10.1029/2002TC001426, 2003.
Sue, C., Thouvenot, F., Fréchet, J., and Tricart, P.: Widespread
extension in the core of the western Alps revealed by earthquake analysis,
J. Geophys. Res.-Sol. Ea., 104, 25611–25622,
https://doi.org/10.1029/1999JB900249, 1999.
Sue, C., Grasso, J. R., Lahaie, F., and Amitrano, D.: Mechanical behavior of
western alpine structures inferred from statistical analysis of seismicity,
Geophys. Res. Lett., 29, 65-1-65–4, https://doi.org/10.1029/2001GL014050, 2002.
Sue, C., Delacou, B., Champagnac, J.-D., Allanic, C., and Burkhard, M.:
Aseismic deformation in the Alps: GPS vs. seismic strain quantification,
Terra Nova, 19, 182–188, https://doi.org/10.1111/j.1365-3121.2007.00732.x, 2007a.
Sue, C., Delacou, B., Champagnac, J.-D., Allanic, C., Tricart, P., and
Burkhard, M.: Extensional neotectonics around the bend of the
Western/Central Alps: an overview, Int. J. Earth Sci., 96, 1101–1129,
https://doi.org/10.1007/s00531-007-0181-3, 2007b.
Swiss Seismological Service (SED): National Seismic Networks of Switzerland, ETH Zürich, https://doi.org/10.12686/sed/networks/ch, 1983.
Thouvenot, F. and Fréchet, J.: Seismicity Along The Northwestern Edge Of
The Adria Microplate, in: The Adria Microplate: GPS Geodesy, Tectonics and
Hazards, edited by: Pinter, N., Gyula, G., Weber, J., Stein, S., and Medak, D., Springer Netherlands, Dordrecht, the Netherlands, 335–349, 2006.
Thouvenot, F., Fréchet, J., Guyoton, F., Guiguet, R., and Jenatton, L.:
Sismalp: an automatic phone-interrogated seismic network for the western
Alps, Cah. Cent. Eur. Géodynamique Séismologie, 1, p. 10, 1990.
Thouvenot, F., Fréchet, J., Jenatton, L., and Gamond, J.-F.: The
Belledonne Border Fault: identification of an active seismic strike-slip
fault in the western Alps, Geophys. J. Int., 155, 174–192,
https://doi.org/10.1046/j.1365-246X.2003.02033.x, 2003.
Thouvenot, F., Jenatton, L., and Sanchez, O.: Région Alpes: Contribution
OSUG, OSUG observatory, Grenoble, France, report, Annexe A–V, 94–123, 2013.
Tricart, P.: From passive margin to continental collision; a tectonic
scenario for the Western Alps, Am. J. Sci., 284, 97–120, 1984.
University of Genoa: Regional Seismic Network of North Western Italy, International Federation of Digital Seismograph Networks [data set], https://doi.org/10.7914/SN/GU, 1967.
Vavryčuk, V.: Iterative joint inversion for stress and fault
orientations from focal mechanisms, Geophys. J. Int., 199, 69–77,
https://doi.org/10.1093/gji/ggu224, 2014.
Vernant, P., Hivert, F., Chéry, J., Steer, P., Cattin, R., and Rigo, A.:
Erosion-induced isostatic rebound triggers extension in low convergent
mountain ranges, Geology, 41, 467–470, https://doi.org/10.1130/G33942.1, 2013.
Walpersdorf, A., Sue, C., Baize, S., Cotte, N., Bascou, P., Beauval, C.,
Collard, P., Daniel, G., Dyer, H., Grasso, J.-R., Hautecoeur, O.,
Helmstetter, A., Hok, S., Langlais, M., Menard, G., Mousavi, Z., Ponton, F.,
Rizza, M., Rolland, L., Souami, D., Thirard, L., Vaudey, P., Voisin, C., and
Martinod, J.: Coherence between geodetic and seismic deformation in a
context of slow tectonic activity (SW Alps, France), J. Geodyn., 85, 58–65,
https://doi.org/10.1016/j.jog.2015.02.001, 2015.
Walpersdorf, A., Pinget, L., Vernant, P., Sue, C., Deprez, A., and the RENAG
team: Does Long-Term GPS in the Western Alps Finally Confirm Earthquake
Mechanisms?, Tectonics, 37, 3721–3737, https://doi.org/10.1029/2018TC005054, 2018.
Zhao, L., Paul, A., Solarino, S., Aubert, C., Zheng, T., Salimbeni, S.,
Guillot, S., Wang, Q., Ai, Y., Zangelmi, P., He, Y., Lainé, R., Chen,
L., Xu, W., Lin, W., Margheriti, L., Pondrelli, S., and Zhu, R.: First
results of a new seismic profile across the southwestern Alps, CIFALPS,
15, EGU General Assembly, 7–12 April 2013, Vienna, Austria, EGU2013-6436, 2013.
Zhao, L., Paul, A., Guillot, S., Solarino, S., Malusà, M. G., Zheng, T.,
Aubert, C., Salimbeni, S., Dumont, T., Schwartz, S., Zhu, R., and Wang, Q.:
First seismic evidence for continental subduction beneath the Western Alps,
Geology, 43, 815–818, https://doi.org/10.1130/G36833.1, 2015.
Zhao, L., Paul, A., Solarino, S., and RESIF: Seismic network YP: CIFALPS temporary experiment (China-Italy-France Alps seismic transect) [data set], RESIF – Réseau Sismologique et géodésique Français, https://doi.org/10.15778/RESIF.YP2012, 2016a.
Zhao, L., Paul, A., Malusà, M. G., Xu, X., Zheng, T., Solarino, S., Guillot, S., Schwartz, S., Dumont, T., Salimbeni, S., Aubert, C., Pondrelli, S., Wang, Q., and Zhu, R.: Continuity of the Alpine slab unraveled by high-resolution P
wave tomography, J. Geophys. Res.-Sol. Ea., 121, 8720–8737, 2016b.
Short summary
This work features the highest-resolution seismic stress and strain fields available at the present time for the analysis of the active crustal deformation of the Western Alps. In this paper, we address a large dataset of newly computed focal mechanisms from a statistical standpoint, which allows us to suggest a joint control from far-field forces and from buoyancy forces on the present-day deformation of the Western Alps.
This work features the highest-resolution seismic stress and strain fields available at the...
