Efthymios Lekkas summed up the data on the destructive earthquake of Myanmar by analyzing exactly why experts are concerned about a “domino phenomenon”
The biblical disaster caused by the 7.7 Richter earthquake in Myanmar leaves, in the first place, a clear gap in both the awareness of its size and what the “next day” will bring.
Speaking to SKAI, Professor of Geology and Natural Disasters Efthymios Lekkas summarizes the data so far, stressing that many phenomena that occurred along with the earthquake contributed to this devastating result.
“Due to our knowledge in the area we can assume that in addition to the great earthquake that was huge, 7.7, and the small focal depth, in the area there will be fluidization phenomena in the big rivers,” he said, among other things, explaining that we are in the term of fluid. above him.
“This is the first phenomenon that has certainly occurred in the area,” he summed up.
“The second phenomenon is the big landslides we see but we cannot appreciate their size. We imagine that due to morphology they will be extensive, “he added.
The third and most important, according to Lekka, is that the length of the rift, passing through large cities, cities of 500,000 and 1,000,000, is very long and is estimated at 120 km.
As he explained by presenting a relevant map of the area in which the intense seismicity has been imprinted, an intra-healing valley, where the big cities are located, runs the rift activated and estimated at 130 km.
“Then, in this valley, phenomena are developing, essentially trapping seismic waves,” he said, saying that the rift, the areas, are mountainous and sparsely populated for which there is no precise picture of what has happened.
Therefore, the number of 1,644 dead so far is officially fictitious and undoubtedly small since, according to Mr. Lekka, we have an area that in the first 100 km from the focus inhabit at least 5 to 6 million people.
“So you understand that the impacts will be enormous,” he said, saying that in addition to the concomitant geodynamic phenomena we should also calculate the important parameter of the vulnerability of constructions since the buildings there are in a miserable state, which is also being testified by the crashing, which we can see.
At the same time he spoke of a completely different situation in Thailand since we see nearby phenomena.
In any case, the conclusion of the scientific community is that the effects of the deadly earthquake will be large since in similar cases the dead exceeded 50,000.
Mr Lekkas, among other things, observed that the 6.4 Richter earthquake that occurred shortly after that of 7, 7 Richter could not be considered a major aftershock, since the seismic vibration of 7.3 or 71.1 degrees should have taken place.
Undoubtedly such an earthquake will have an impact on already vulnerable buildings.
But what the scientific community is most afraid of is:
As it is not a sliding sliding rift, that is, it is not a vertical rift, normal or reverse, as it is usually called, but extends to a large area, probably the tendencies released from the great earthquake to move mainly to the south giving yet another major earthquake and further affecting the country.
This is the well -known “domino effect”.
Source :Skai
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