The impulse appears every 26 seconds, is not perceptible by humans, but so strong that he is recorded with sensitive seismological advice around the whole of the globe. For almost 60 years, this natural phenomenon has been aware of researchers around the world.
John Ertle “Jack” Oliver, born 26. September 1923 in Massillon, (Ohio), died 5. January 2011 in Ithaca (New York) has made a name for itself, especially with the exploration of plate tectonics.
For the first time in the coarse framework, the seismological appearance was examined at the beginning of the 1960s. The American geologist John Ertle “Jack” Oliver published in 1962 in the seismological magazine Bulletin of the Seismological Society of America (BSSA) the article “A Worldwide Storm of MICKEIMS with periods of about 27 seconds”, by presenting the results of his research on the microvers.
Micro cups in the 26-second interval
The quakes appeared in an interval between average 26 and 27 seconds and Oliver located the epicenter in the Gulf of Guinea. In total, the quakes between the 6. and 7. June 1961 and measured in 16 out of 18 research stations over the entire globe. He compared the strongest rash with the explosion of about 600 tonnes TNT. The strong fluctuated with time; Oliver also found out that in the winter months of the sud hemisphere of the impulse was most strongest.
At the same time, microbefleaf nothinges are not special. In Germany, the earth is in this way almost daily, without anyone gaining acknowledgment of seismological research. Whereby the corona crisis even improves exploration, as the outgoing notes reduce the everyday storage sources that these quakes otherwise easily overlap.
Lifting as a monitor of the soil texture
The findings of this are helpful for geological research – in a damp rock, liquids and gases can be responsible for tension conditions. Therefore, more insights over the material of the rock can be gained via the measured microbefreins.
The difference between these irregular quakes and the phanomena before West Africa is just the exact periodicity. And that makes it so hard for the researchers to locate the source of this phanyan. And Jack Oliver was surprised by technical opportunities that offered his time; He could therefore only speculate.
Hypotheses between waves and magnetic activity
The main hypothesis was that the microvers were produced by shafts that bounce on the cuffs in the Gulf of Guinea. A second amption that magnetic activity under the Sudatlantic causes the quakes.
The Gulf of Guinea in the Atlantic Ocean, with the Kustenlandstrich West Africa. According to the quantities of different researchers, the origin point of the microvers in the bay of Bonny, something right above the center of the picture.
In August 2006, an article published in the journal Geophysical Research Letters, in which the researchers confronted the place of origin for the impulse (0.038 Hz) more precisely. Both in the bay of Bonny, in the Gulf of Guinea as well as in the antipode Pacific region east of Papaua New Guinea, the microplaces were detected.
New findings by Chinese research team
A Chinese research team publishes in 2013 in Geophysical Journal International another specialist article on the phanomena. They discovered a second periodic impulse (0.036 Hz). While they suspect as the origin for the known impulse due to the visiting near the Sao-Tome volcano as a source, the possibility of the newly discovered source remains in the dark. The researchers also suspect volcanic activity.
However, it is – secured is the origin of this fascinating natural phanyomet in any case not. Thus, the research question remains exciting; Where – another original theory delivers geek comic author Randall Munroe in its XKCD comic “26-Second Pulse”. Microbbeflective pulse of a giant – the exploration remains exciting!