The Cavity Tunneling and Layered Guiding Pathways in Significant Seismic Activities: Pre-fingerprints in Significant Earthquakes of Türkiye in 1999 and 2023

Let us focus on a specific question that may has an ability to build an efficient method toward extracting significantly major ingredients of pre-active events going ahead of significant seismic activities. What is the common point at the state spaces of significant earthquakes of Türkiye in 1999 and 2023? The answer comes from some live but non-instrumented observations, those are devised privately. Those observations are related to both waveguide and cavity effects of natural and/or manmade significant structures replaced in both underground and/or atmosphere. The effects are studied on the electromagnetic wave propagation at significant pre-seismic activities of both circularly cylindrical wave guide and cavity structures meshed in underground and/or atmosphere by considering the extended wave equations in irregularly deviating environs¹. Those structures have excessive dimensions as in subway tunnels² and/or layered guiding pathways in atmosphere³.

The answer comes from two big tunnels excavated before abovesaid two earthquakes of Türkiye. First is Mount Bolu Tunnel, that is almost finished in 2007 and begun in 1993 and second is New Mount Zigana Tunnel, that is finished in 2023 and begun in 2016. Why? First of all, both tunnels are into mounts area of Northern Anatolia. The reason is related to the changing character of seismic activities after 5.9 R (included) magnitude that converts the seismic activities to electromagnetic activities majorantly⁴.

There is one more tunnel process that still continues for constructions: Between Bahce (37° 12′ 0″ N, 36° 35′ 0″ E) and Nurdagi (37° 10′ 44″ N, 36° 44′ 23″ E) districts of Gaziantep Province, Türkiye. This tunnel construction may have a potential on future seismic activities as two tunnel constructions said in previous paragraph.

The cavities and tunnels behave as layered guiding pathways for propagating waves either homogeneous and/or inhomogeneous fillings; therefore, the activities of waveforms may propagate along long distances under the Earth; i.e., between NAF and SAF by suitable transmissions, propagations, and guiding of waves. The majorant contributions come through Casimir and Casimir-like activities from the boundary interfaces between different materials with specific conditions under stochastic processes. The propagating waves create similar effects among transmitters and receivers through atmosphere layers. Author calls transmission effect by the cavity tunneling and layered guiding pathways these effects.

Those circumstances are studied in above paragraphs by considering the state space formulation of equivalent electrical circuits models through the possible mechanical circuits into the Earth.

The equivalent circuit model governs the significant Seismic Activities, sSAs, by the interactions among source and sink structures available in the distributed networks of equivalent circuits. New constructions have the ability to trigger and produce sSAs close to both specific domains of sSAs and their neighbor domains even if they never generated sSAs in past, of tunnel projects in paragraph 3 and similar ones. Temporal intervals may not coincide with the time spans of excavations of sSAs processes and their triggering effects may either decrease, mostly and/or increase, asymptotically as depending to coupling activities in environ.

 

¹https://doi.org/10.1109/APS.1996.549734

²https://doi.org/10.5194/egusphere-egu2020-22589.

³ https://doi.org/10.1109/RAST.2003.1303999.

⁴ https://doi.org/10.5194/egusphere-egu2020-21121.