MTL - The Science Fiction World of Xueba-Chapter 506 Ground current
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More than half an hour later, Pang Xuelin stood steadily on the sunset of the Turpan Basin, and the project would only launch on the runway of the central airport.
The overall riding feel of the wave-powered aircraft is not bad. Except for the strong pushback during the take-off phase, the noise during the flight is a bit louder, and the overall ride is not much different from taking an ordinary civil aviation aircraft.
"Dr. Pang, Academician Shen Yuan is waiting for you in the command and control center!"
An officer wearing a major uniform took the initiative.
Pang Xuelin nodded at him and got on a jeep that came to pick him up.
More than ten minutes later, the figure of Pang Xuelin appeared in the hall of the command and control center of the "Sunset Project".
The atmosphere in the hall was a little dignified. On the holographic screen, the hot liquid iron-nickel shone glaringly and tumbled. As the spacecraft descended, it quickly gathered together at the stern, instantly filling the space through which the spacecraft passed.
Sunset Six is still sinking!
The expressions on the faces of most of the staff were very dignified, and whispers were heard from time to time.
Shen Yuan stood on the edge of the hall of the command and control center, where there was a huge floor-to-ceiling window in the direction of the magma lake where the sunset set sail.
"teacher!"
Pang Xuelin walked behind Shen Yuan and whispered softly.
Shen Yuan turned around, and a sharp gaze instantly covered Pang Xuelin's whole body, as if he wanted to see through him.
Pang Xuelin was slightly distracted.
Because at that moment, he saw the shadow of an acquaintance from Shen Yuan.
Thomas Wade!
In fact, there is a big difference between the two in terms of appearance and temperament.
Thomas Wade was born in the KGB, and he looks like a classical tough guy with slightly cloudy eyes.
Shen Yuan is an elegant scholar image, wearing gold wire glasses, gray hair, teach people to feel good at first glance.
The only thing the two people have in common is the flame that will never extinguish in their eyes.
"They are the same kind of person!"
Pang Xuelin secretly said.
"Xuelin, you're here. Tell me, how did you find the mantle fissure on the route of the No. 6 spacecraft?"
Shen Yuan's voice sounded a little tired, but he didn't show any sentimental emotions, as if the little girl in Sunset Six was not his daughter.
Pang Xuelin took a deep breath and uttered his own prepared statement: "Teacher, I found a problem from the ground current data detected in the previous period..."
"Ground current?"
Shen Yuan frowned, and his sharp eyes looked at Pang Xuelin without blinking.
Pang Xuelin did not change his face, nodded and said: "There is a big difference in the electrical conductivity between the mantle and the core. When we did the route survey before, we did not make a quantitative analysis of the ground current data. I went back to write a paper this time, just Using this data, after analyzing the results, it was found that there are two measurement points at a distance of more than tens of kilometers underground two thousand five hundred kilometers underground, the intensity of the ground current is very different. Then I did further calculation and analysis , The results show that between these two points, there should be a medium with a conductivity much higher than that of the mantle material. In addition to the iron-nickel core of the core, I can’t think of anything else."
Shen Yuan was silent and did not speak again.
Pang Xuelin was not worried about his lies being breached.
There is a very close relationship between ground current and geomagnetic field.
Ground current is the main cause of the geomagnetic field.
There is an iron-nickel core in the core of the earth. This layer of liquid material can flow and conduct electricity. It is called a conductive fluid.
As the earth rotates, the conductive fluid moves.
If there is a very weak magnetic field in the ground core at first, a current will be excited in the conductive fluid. After a very complicated mechanism similar to a self-excited motor, the interaction of the magnetic field and current reaches a certain stability, forming a ground current and stability. Geomagnetic field.
The earth current is like the blood veins of the earth. Its existence and movement were discovered very early.
Even many scientists realize that there is a large relationship between earth currents and earthquakes.
For example, an earthquake is crustal movement, and the crustal movement is exactly equivalent to the movement of a conductor (earth) in a magnetic field (geomagnetic field).
This is similar to the principle that a generator has electricity.
It was discovered that earthquakes also produce abnormal ground currents, thanks to Varley. His observation of the March 17, 1871 Canadian earthquake confirmed this phenomenon.
Later, Japan obtained earthquakes with abnormal ground currents for the 1923 Kanto Earthquake and the 1949 Tottori Earthquake.
my country started after the Xingtai earthquake in 1966.
Observation of the geoelectric field is simple and easy, with low cost.
In the place where the ground is tens of meters to 100 meters away, bury two lead plates, and then connect the two ends of the ammeter (milliampere meter) or voltmeter (millivolt meter) with wires respectively, from the meter head Observed the characteristics of the daily and annual changes of the pointer. This method does not require any external power supply.
From the 1960s to the 1970s, many factories, mines, schools and rural areas in my country have carried out geoelectricity observations, which is one of the important means of group measurement and prevention. The common people gave it the reputation of "land electricity".
However, there is a difficult problem to distinguish true from false land electricity.
The most important factor causing these anomalies is the extremely unstable chemical potential of the metal electrode, combined with the complex changes of the natural electric field, which makes the tiny earthquake information obliterated.
Under the objective conditions of limited technical level, in the early 1980s, China decided to temporarily phase out the land electricity method, focusing on the observation of resistivity. This is a geoelectric method with an artificial power source: use first The artificial power supply offsets the variable natural geoelectric field to zero, so that the measurement data can be stabilized, and then the electrical parameter of the underground medium—resistivity is measured. This technology has been very successful in engineering exploration.
But in earthquake prediction, it still didn't play a big role.
Up until this time, human cognition of earth current was very shallow.
For example, in the sunset project, although the relevant parameters of the ground current were measured, when doing the analysis, I did not expect what kind of influence the ground current would have.
"Good job, go ahead."
After a long silence, Shen Yuan, UU Kanshu www.uukanshu.com spoke again.
Pang Xuelin nodded and asked, "Yes, teacher, sunset number six... how is it now?"
"The junction between the smelting engine and the main cabin is broken. The smelting engine of the stratum spacecraft uses ultra-high-temperature jets to cut the material of the spacecraft. Without it, only one propulsion engine, Sunset No. 6, is difficult to move in the stratum. Moreover, the density of the neutron material that constitutes the spacecraft is greater than the density of the earth’s core, and the buoyancy of the liquid iron-nickel on the spacecraft is less than its own weight. Now sunset 6 is sinking to the center of the earth.
Pang Xuelin opened his mouth, wanted to say something, and finally said nothing, turned and left the command and control center.
Shen Yuan frowned slightly when he looked at the back of his disciple.
Somehow, he always felt that his disciple was not the same as before.
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