The topic of this discussion is very stimulating, thanks. I need to point out the difference between body tides, and fluid tides. Moreover, it should be distinguished the horizontal component of the body tide with respect to its vertical component. The effects of the tides should be differentiated as a function of the tectonic setting, i.e., more frequent thrust earthquakes during high tide, and more frequent normal fault related earthquakes during the low tide (see Riguzzi et al., 2010). We wrote a number of articles of the theme and I list them here for those who may be interest in the astronomical effects on geodynamics.
Scoppola B., Boccaletti D., Bevis M., Carminati E. & Doglioni C. (2006): The westward drift of the lithosphere: a rotational drag? Bull. Geol. Soc. Am., 118, 1/2; p. 199–209; doi: 10.1130/B25734.1.
Riguzzi F., Panza G., Varga P. & Doglioni C. (2010): Can Earth’s rotation and tidal despinning drive plate tectonics? Tectonophysics, 484, 60–73, doi:10.1016/j.tecto.2009.06.012.
Crespi, M., Cuffaro, M., Doglioni, C., Giannone, F., & Riguzzi, F. (2007): Space geodesy validation of the global lithospheric flow. Geophysical Journal International, 168, 491-506, doi: 10.1111/j.1365-246X.2006.03226.x.
Cuffaro M. & Doglioni C. (2007): Global Kinematics in the deep versus shallow hotspot reference frames. In: Foulger, G.R., and Jurdy, D.M., eds., Plates, plumes, and planetary processes, Geol. Soc. Am. Spec. Pap., 430, 359–374, doi: 10.1130/2007.2430(18).
Doglioni C., Ismail-Zadeh A., Panza G., Riguzzi F., 2011. Lithosphere-asthenosphere viscosity contrast and decoupling. Physics of the Earth and Planetary Interiors, 189, 1-8.
Sottili G.L., Palladino D., Cuffaro M., Doglioni C. (2015) Earth’s rotation variability triggers explosive eruptions in subduction zones. Earth Planets Space, 67:208 DOI 10.1186/s40623-015-0375-z
Carcaterra A. and Doglioni C. 2018. The westward drift of the lithosphere: a tidal ratchet? Geoscience Frontiers, 9, 403-414 https://doi.org/10.1016/j.gsf.2017.11.009
Cuffaro M. and Doglioni C. 2018. On the increasing size of the orogens moving from the Alps to the Himalayas in the frame of the net rotation of the lithosphere. Gondwana Research, 62, 2–13 doi.org/10.1016/j.gr.2017.09.008
Ficini, E., Cuffaro, M. and Doglioni C. 2020. Asymmetric Dynamics at Subduction Zones Derived from Plate Kinematic Constraints. Gondwana Research, 78, 110-125, https://doi:10.1016/j.gr.2019.07.013
Zaccagnino D., Doglioni C., 2022. Earth’s gradients as the engine of plate tectonics and earthquakes. La Rivista del Nuovo Cimento, https://doi.org/10.1007/s40766-022-00038-x
Zaccagnino D., Telesca L., Doglioni C., 2022. Correlation of seismic activity and tidal stress perturbations highlights growing instability within the brittle crust. Scientific Reports, 12:7109 | https://doi.org/10.1038/s41598-022-11328-z
Kossobokov, V.G. and Panza, G.F., 2020. A myth of preferred days of strong earthquakes?. Seismological Research Letters, 91(2A), pp.948-955.
Hi Carlo, thanks for the links to those articles. I haven't thought about the geodynamic implications of tidal forces, and it looks like there are some really interesting things to read and consider. I do recall the presence of tidal features in Archean and Proterozoic sediments, which are a reminder that the Moon has been a witness to Earth's great geological changes over billions of years, while itself staying much the same. It is quite interesting to try to think about how tidal forces may have influenced the Earth over geological time scales! Cheers.
Very nice summary, if disconcertingly inconclusive! Why not next see if regional tidal triggering studies are as discordant, and compare them with these global surveys?
Thanks! Yes, it is a bit disconcerting. We have at least three more parts to this series coming - the fourth and fifth ones will focus on more regional settings, first looking at regional earthquake precursor studies, and then on interesting local geology. Your own 1998 paper was originally in this post but got bumped because it didn't fit with the global theme. (Although I quite like your statistical approach, and would like to see it replicated at a global level!) Presumably it will make its way into a later post.
The topic of this discussion is very stimulating, thanks. I need to point out the difference between body tides, and fluid tides. Moreover, it should be distinguished the horizontal component of the body tide with respect to its vertical component. The effects of the tides should be differentiated as a function of the tectonic setting, i.e., more frequent thrust earthquakes during high tide, and more frequent normal fault related earthquakes during the low tide (see Riguzzi et al., 2010). We wrote a number of articles of the theme and I list them here for those who may be interest in the astronomical effects on geodynamics.
Scoppola B., Boccaletti D., Bevis M., Carminati E. & Doglioni C. (2006): The westward drift of the lithosphere: a rotational drag? Bull. Geol. Soc. Am., 118, 1/2; p. 199–209; doi: 10.1130/B25734.1.
Riguzzi F., Panza G., Varga P. & Doglioni C. (2010): Can Earth’s rotation and tidal despinning drive plate tectonics? Tectonophysics, 484, 60–73, doi:10.1016/j.tecto.2009.06.012.
Crespi, M., Cuffaro, M., Doglioni, C., Giannone, F., & Riguzzi, F. (2007): Space geodesy validation of the global lithospheric flow. Geophysical Journal International, 168, 491-506, doi: 10.1111/j.1365-246X.2006.03226.x.
Cuffaro M. & Doglioni C. (2007): Global Kinematics in the deep versus shallow hotspot reference frames. In: Foulger, G.R., and Jurdy, D.M., eds., Plates, plumes, and planetary processes, Geol. Soc. Am. Spec. Pap., 430, 359–374, doi: 10.1130/2007.2430(18).
Doglioni C., Ismail-Zadeh A., Panza G., Riguzzi F., 2011. Lithosphere-asthenosphere viscosity contrast and decoupling. Physics of the Earth and Planetary Interiors, 189, 1-8.
Sottili G.L., Palladino D., Cuffaro M., Doglioni C. (2015) Earth’s rotation variability triggers explosive eruptions in subduction zones. Earth Planets Space, 67:208 DOI 10.1186/s40623-015-0375-z
Doglioni C. and Panza G.F. (2015) Polarized plate tectonics. Advances in Geophysics, 56, 3, 1-167, http://dx.doi.org/10.1016/bs.agph.2014.12.001
Carcaterra A. and Doglioni C. 2018. The westward drift of the lithosphere: a tidal ratchet? Geoscience Frontiers, 9, 403-414 https://doi.org/10.1016/j.gsf.2017.11.009
Cuffaro M. and Doglioni C. 2018. On the increasing size of the orogens moving from the Alps to the Himalayas in the frame of the net rotation of the lithosphere. Gondwana Research, 62, 2–13 doi.org/10.1016/j.gr.2017.09.008
Zaccagnino, D., Vespe, F. and Doglioni, C. 2020. Tidal modulation of plate motions. Earth Science Reviews, 205, 103179, https://doi.org/10.1016/j.earscirev.2020.103179
Ficini, E., Cuffaro, M. and Doglioni C. 2020. Asymmetric Dynamics at Subduction Zones Derived from Plate Kinematic Constraints. Gondwana Research, 78, 110-125, https://doi:10.1016/j.gr.2019.07.013
Zaccagnino D., Doglioni C., 2022. Earth’s gradients as the engine of plate tectonics and earthquakes. La Rivista del Nuovo Cimento, https://doi.org/10.1007/s40766-022-00038-x
Zaccagnino D., Telesca L., Doglioni C., 2022. Correlation of seismic activity and tidal stress perturbations highlights growing instability within the brittle crust. Scientific Reports, 12:7109 | https://doi.org/10.1038/s41598-022-11328-z
Kossobokov, V.G. and Panza, G.F., 2020. A myth of preferred days of strong earthquakes?. Seismological Research Letters, 91(2A), pp.948-955.
Hi Carlo, thanks for the links to those articles. I haven't thought about the geodynamic implications of tidal forces, and it looks like there are some really interesting things to read and consider. I do recall the presence of tidal features in Archean and Proterozoic sediments, which are a reminder that the Moon has been a witness to Earth's great geological changes over billions of years, while itself staying much the same. It is quite interesting to try to think about how tidal forces may have influenced the Earth over geological time scales! Cheers.
Very nice summary, if disconcertingly inconclusive! Why not next see if regional tidal triggering studies are as discordant, and compare them with these global surveys?
Thanks! Yes, it is a bit disconcerting. We have at least three more parts to this series coming - the fourth and fifth ones will focus on more regional settings, first looking at regional earthquake precursor studies, and then on interesting local geology. Your own 1998 paper was originally in this post but got bumped because it didn't fit with the global theme. (Although I quite like your statistical approach, and would like to see it replicated at a global level!) Presumably it will make its way into a later post.