More than half an hour later, Pang Xuelin stood firmly on the runway of the central airport of the Sunset Project launch in the Turpan Basin.

The overall riding feeling of the wave-riding aircraft is not bad, except for the strong sense of pushing back in the take-off stage, and the noise during the flight is a little louder, which is not much different from taking an ordinary civil aircraft.

"Dr. Pang, Academician Shen Yuan is waiting for you in the command and control center!"

An officer in a major's uniform stepped forward.

Pang Xuelin nodded at him and got into the jeep that came to pick him up.

More than ten minutes later, Pang Xuelin's figure appeared in the hall of the command and control center of the "Sunset Project".

The atmosphere in the hall was a little solemn, and on the holographic screen, the blazing liquid iron and nickel flashed and tumbled, and as the spaceship dived, it quickly closed in the stern, instantly filling the space through which the spaceship passed.

Sunset Six is still sinking!

Most of the staff members had solemn expressions on their faces, and a few whispers could be heard from time to time.

Shen Yuan stood at the edge of the hall of the command and control center, where there was a huge floor-to-ceiling window, facing the direction of the magma lake where Sunset Six set sail.

"Teacher!"

Pang Xuelin walked behind Shen Yuan and exhaled softly.

Shen Yuan turned around, and a sharp gaze instantly enveloped Pang Xuelin's body, as if he wanted to see through his whole body.

Pang Xuelin was slightly distracted.

Because at that moment, he saw the shadow of an acquaintance from Shen Yuan.

Thomas Vader!

In fact, there is a big difference between the two in terms of appearance and temperament.

Thomas Vader was born in the KGB, and his appearance is a classic tough guy, and his eyes are slightly cloudy.

Shen Yuan is an elegant scholar, wearing gold-rimmed glasses and gray hair, which makes people feel good at first sight.

The only thing the two have in common is that there is a flame that never goes out in their eyes.

"They're the same kind of people!"

Pang Xuelin said secretly in his heart.

"Xuelin, you're here, tell me, how did you discover the mantle crack on the Sunset 6 spaceship's route?"

Shen Yuan's voice sounded slightly tired, but it didn't show any sadness, as if the little girl in Sunset Six was not his daughter.

Pang Xuelin took a deep breath and said the words he had prepared a long time ago: "Teacher, I found the problem from the ground current data detected in the early stage......

"Ground current?"

Shen Yuan frowned, and a pair of sharp eyes looked at Pang Xuelin without blinking.

Pang Xuelin's face did not change, and he nodded: "There is a big difference between the conductivity of the mantle and the core, and when we did the route survey before, we did not quantitatively analyze the data of the ground current. I went back to write my dissertation this time, and I just needed to use this data, and after analyzing the results, I found that the strength of the ground current was very different between the two measurement points at a distance of more than 10 kilometers at a distance of 2,500 kilometers underground. Then I did further calculations and analyses, and the results showed that between these two points, there should be a medium with a much higher conductivity than the mantle material. I can't think of anything else other than the iron-nickel core of the Earth's core. ”

Shen Yuan fell silent and didn't speak again.

Pang Xuelin is also not worried about his lies being exposed.

The geoelectric current and the geomagnetic field are very closely related.

The geoelectric current is the main cause of the geomagnetic field.

In the core of the Earth's interior, there is an iron-nickel core, a layer of liquid material that can flow and conduct electricity, and is called a conductive body.

Due to the rotation of the earth, the conductive fluid undergoes motion.

If there is a very weak magnetic field in the earth's core at first, the current will be excited in the conductive body, and after a very complex mechanism similar to that of a self-excited motor, the interaction between the magnetic field and the current will reach a certain stability, forming a ground current and a stable earth magnetic field.

The earth current is like the blood of the earth, and its existence and movement have been discovered by people very early.

Many scientists are even aware that there is a significant relationship between ground currents and earthquakes.

For example, an earthquake is the movement of the earth's crust, and the movement of the earth's crust is exactly the same as the movement of a conductor (the earth) in a magnetic field (geomagnetism).

This is similar to the principle that a generator has electricity.

It was discovered that earthquakes also produce anomalous ground currents, thanks to Varley, whose observations of the March 17, 1871 earthquake in Canada confirmed this phenomenon.

Subsequently, in response to the 1923 Kanto Earthquake and the 1949 Tottori Earthquake, Japan achieved seismic examples of geoelectric current anomalies.

China started after the Xingtai earthquake in 1966.

The observation of the geoelectric field is simple and inexpensive.

In the place where tens of meters to 100 meters away from each other underground, two lead plates are buried, and then connected to the two ends of the ammeter (milliampere meter) or voltmeter (millivoltmeter) respectively with wires, and the daily and annual variation characteristics of the pointer can be observed from the meter head, and this method does not need to add any artificial power supply.

In the 60~70s of the 20th century, many factories and mines, schools and rural areas in China have carried out geoelectric observation, which is one of the important means of group measurement and group prevention, and the common people have given it the reputation of "land electricity".

However, there is a problem that it is difficult to distinguish between true and false land power anomalies.

The main cause of these anomalies is the extremely unstable chemical potential of the metal electrodes, coupled with the complex changes in the natural electric field, which obliterates the tiny seismic information.

Under the objective condition of limited technical level, China decided to temporarily eliminate the land power method in the early 80s of the 20th century, and focused the research on the observation of resistivity, which is a kind of ground power method with artificial power supply: first use artificial power to offset the uncertain natural earth electric field to zero, so that the measurement data can be stabilized, and then change the electrical parameters of the underground medium - resistivity, the application of this technology in engineering exploration is quite successful.

However, earthquake prediction still does not play a big role.

Until this era, human beings' understanding of ground currents was still very shallow.

For example, in the sunset project, although the relevant parameters of the ground current were measured, when the analysis was done, the impact of the ground current was not thought of at all.

"Well done, you go down first."

After being silent for a long time, Shen Yuan spoke up again.

Pang Xuelin nodded and asked, "By the way, teacher, Sunset Six...... How's it going? ”

"The junction between the molten engine and the main cabin broke, and the molten engine of the formation spacecraft used an ultra-high temperature jet to cut the material in the direction of the spacecraft, without it, only one propulsion engine remained, and Sunset 6 was unable to move an inch in the formation. Moreover, the density of the neutron material that makes up the spacecraft is greater than the density of the earth's core, and the buoyancy of liquid iron-nickel on the spacecraft is less than its own weight, and now Sunset 6 is sinking towards the center of the earth. Expect to enter the center of the earth in the next few days! ”

Pang Xuelin opened his mouth to say something, but in the end he didn't say anything, turned around and left the command and control center.

Shen Yuan looked at the back of his disciple and frowned slightly.

For some reason, he always felt that his disciple was not the same as before.

n.