Scientists have studied the fluctuations of coastal areas during tides

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MOSCOW, December 9 The territory of the coastal regions of Russia, as shown by a study conducted by a student of the Moscow State University of Geodesy and Cartography, is rising and falls daily by five to six centimeters, and Moscow fluctuates by almost a centimeter, the university press service reported.
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“At the Moscow State University of Geodesy and Cartography (MIIGAiK), using methods of mathematical analysis of higher geodesy, they studied the influence of tidal load effects on the territory of Russia <…>. As a result of research, it was found that the entire coastal territory of the North-West and Far East rises and falls by five to six centimeters every day, and Moscow “breathes” with an amplitude of nine millimeters per day,” noted university representatives.

Semyon Zhidyaev, a fifth-year student of the Faculty of Geodesy at MIIGAiK, majoring in applied geodesy, who conducted the research, used for calculations not only the classical theory of tides, but also the principles of movement of ocean water masses, the university explained.

“If we are talking about the load of ocean tides, then failure to take this effect into account can affect the accuracy of the global navigation satellite system (GNSS) positioning, namely to improve the accuracy of obtaining geodetic height, which is necessary for the correct functioning of navigation,” Zhidyaev noted.

The university admitted that, unfortunately, such an effect is impossible for an ordinary person to see and feel. Such phenomena can only be recorded using high-precision geodetic instruments, in particular GNSS equipment.
“»The effect of the movement of the earth's crust under the influence of the loading effect is similar to an ocean wave — smooth and evenly rolling onto the shore. For example, when compared with earthquakes, there are sharp jumps, but in this case everything happens monotonously,» the researcher added.
As told at MIIGAiK, there are two types of load effects. During the study, the first one was considered — the load of ocean tides. The second is the so-called “solid tides”, depending on the influence of the Sun and Moon on our planet, which cause deformation of the earth’s crust.

At the same time, there is no need to fear for the integrity of buildings and infrastructure, since this is a regular process for Earth, inherent in the structure of the planet, and “it does not affect our usual life,” the university assured.