Requesting a geography composition of 700---1000 words

Humans built the Egyptian pyramids many years ago; humans know how to put on clothes only 4,600 years ago, but there are more than 30,000 large animals. The Leaning Tower of Pisa has survived for thousands of years and is located in Floretia, northern Italy. He told people on the radio that they would arrive at the port later, no more than a few days. However, after people on the shore received the last message from the captain (we were fighting 100 kilometers per hour winds and 9-meter-high waves), the Derbyshire and the entire crew disappeared without a trace. Without a trace. This is a huge disaster, but it is not isolated or unique. Please take a look - a mysterious area where strange things happen frequently - the "Magic Forest" of an American town. On the western outskirts of the small town of Santa Cruz in San Francisco, California, near 30° north latitude, there is a small land surrounded by forests. . The strange phenomena that occurred there once made people doubt the existence of gravity. The strange existence of the earth's gravity field there has brought a lot of confusion to scientists. People are high and low. At the entrance of the "Magic Forest", there are two stone slabs about 50 cm long and 20 cm wide. The two stone slabs are only about 40 cm apart. On the surface, these two stone slabs are no different from ordinary stone slabs, but once a person stands on them, one of the stone slabs can make a person appear taller, while the other stone slab makes a person appear shorter and fatter. The result of horizontal measurement is that the two stone slabs are on the same horizontal plane. The tree fell sideways. There is a winding trail with a very steep slope in the "Magic Forest". The strange thing is that the trees around the trail all tilt in one direction. When tourists walk on the trail, the inclination of their bodies is almost parallel to the slope of the trail. Pedestrians can't see their feet when they look down. But he can move forward steadily. There is a cabin in the forest. Once a person enters the cabin, his body will automatically lean to the right. No matter how hard he tries, he cannot straighten his body. There is a wooden plank extending outwards on one side of the cabin, which is slanted from any angle. However, when a tourist puts the golf ball on the wooden board, the ball does not roll downward, but instead rolls upward. If the ball is pushed away from the wooden board by hand, the ball will not fall vertically, but will fall along the tilt of the wooden board. People walk on the wall. In a log cabin, people can stand on the siding of the house safely without any auxiliary tools, and can even walk freely on the siding without any effort. Even well-trained acrobats with special skills are beyond the reach of such a flying and wall-walking technique. A set of shocking figures. In World War II, submarines from both sides met their fate here. According to U.S. military statistics: 1/5 of the U.S. submarines performing missions or passing by here have disappeared due to non-combat factors, with a total of 52 submarines. At the end of World War II, in order to gain maritime superiority, the U.S. Navy's 38th Aircraft Carrier Task Force launched three days and three nights of indiscriminate bombing against Japan's kamikaze commandos. Just as the fleet was replenishing fuel and preparing to fight again, it had to fight a battle for survival against the harsh natural environment in this sea area. At that time, under the attack of a powerful hurricane and 18-meter-high waves, 16 ships were severely damaged, more than 200 aircraft were lifted from the aircraft carrier into the sea, and 765 US sailors were killed. This was the worst natural disaster the U.S. Navy had encountered in the 20th century. At 4:48 a.m. on March 22, 1957, an American cargo plane took off from Wake Island, preparing to head to Tokyo International Airport. The crew members were 67 military personnel. The flight time is scheduled to be 9 and a half hours, and the fuel prepared on the plane is enough for a 13 and a half hour journey. For the first eight hours, the flight conditions were normal. At 2 o'clock in the afternoon, the pilot sent a signal, and the estimated arrival time was 5 o'clock in the afternoon. All the equipment of the aircraft was in normal condition. At this time, the weather was clear in the area where the aircraft was located, and the conditions were almost perfect for the aircraft to fly. One hour and 15 minutes later, the pilot sent a signal 300 kilometers away from Tokyo, and the air traffic control center replied that it hoped she could arrive within 2 hours. However, the American plane never landed at Tokyo Airport. The search and rescue team searched back and forth across thousands of kilometers of sea, but ultimately returned without success. What exactly happened to this aircraft, which was built for war and had almost perfect flying conditions, remains unknown to this day. After the giant ship Derbyshire disappeared here on September 9, 1980, just a few years later, her two sister ships also perished here. In January 2002, a Chinese cargo ship Lin Jie and its 19 crew members suddenly disappeared on the sea outside Nagasaki Port, Japan. There was no distress call and no wreckage was found. The cargo ship seemed to have disappeared from the world, and people had no way of knowing what happened to them. Due to the frequent occurrence of many mysterious shipwrecks in the waters of Japan's Dragon Triangle, it has earned the notoriety of being the "Bermuda Triangle in the Pacific." In this regard, the Japanese Coastal Defense Agency releases an average of about 2,500 maritime accident reports that occur in the waters around Japan every year. Given the reality that searching for a missing ship here is much more difficult than finding a needle in a haystack, most official reports can only attribute the cause of the accident to "forces of nature" and stop there. investigation. However, the families of many sailors who died do not want their loved ones to just walk into the darkness silently. They need a more detailed and reasonable explanation.

On September 23, 1952, a number of scientists boarded a Japanese coastal defense research ship to go to the Dragon Triangle area to study the reefs there. The purpose was to monitor abnormal activities on the seabed and solve the mystery of the above-mentioned ship ride from this perspective. The ship has maintained a very high sailing speed after leaving the port. Logically speaking, it only takes one day to reach the research sea area at this speed. However, there was no signal from the ship in the next three days, so the Water Safety Agency announced the disappearance of the coastal defense research ship. When the search and rescue ships rushed to this area, they only found some wreckage and fragments, but none of the fragments had the name of the ship engraved on it, and no survivors could tell their story... Later, the New York Times published the story of the ship Reports of the mysterious disappearance of the scientific research vessel drew the world's attention to this devilish sea for the first time. Hypothesis does not equal the truth. The continuous mysterious disappearances have aroused people's curiosity, and scientific workers began to use different methods and different angles to try to uncover the mystery of the Devil's Sea. Since field trips have certain limitations and high risks, all kinds of speculations have been made: the longest-standing legend is the legend of sea monsters making trouble, but this hypothesis has gradually faded in the face of contemporary technology. It is also difficult to establish the hypothesis that the magnetic declination phenomenon causes ships to get lost or even disappear while sailing. Magnetic declination is a natural phenomenon caused by the misalignment of the north and south magnetic poles on the earth with the geographical north and south poles. This deviation exists at any location on the earth and is not unique to the Japanese Dragon Triangle. Since Columbus proposed the phenomenon of magnetic declination 500 years ago, it has already become essential knowledge for navigators. Therefore, it cannot simply become the cause of ships with modern equipment getting lost and sinking. Hurricane said. According to observations by marine experts, powerful hurricanes often brew in the waters of Japan's Dragon Triangle. This unfortunate sea area is a hurricane manufacturing factory, and its warm water flow can create 30 deadly storms every year. This can be confirmed by the last few words uttered by the wrecked ships. So some experts believe that the hurricane caused all the navigation instruments of passing ships to malfunction in an instant, eventually causing the ship to crash. But today's large, modern ships are built to withstand the worst-case scenarios, and it stands to reason that a hurricane alone cannot sink them. It is believed to be the work of aliens. On August 18, 1980, the former Soviet Union's ship Uladimir was returning from the coast of Japan after completing its mission. A professor on board the ship suddenly discovered an unknown object rushing up from the bottom of the sea. The cylindrical object emits a brilliant blue light that scorches an area of ??the ship as it slides past it. After this unknown object circled the ship for several minutes, it suddenly disappeared into the ocean as suddenly as it appeared. The professor believes that such weird things are definitely not found on Earth. The 1985 movie "Cocoon" was based on people's fantasy of an alien base deep in the ocean. The people in the film were mysteriously taken away by aliens in a sudden sea fog, and disappeared in front of the Coast Guard in an instant. Everyone thought they had encountered a shipwreck, but a few years later they miraculously returned to Earth. So people began to wonder whether these strange events that occurred in Japan's Dragon Triangle were caused by aliens. People always seem to be willing to believe that alien life must have visited the earth. Using aliens seems to be the easiest way to explain any difficult or unsolved mysteries in the world. All phenomena that are currently incomprehensible or unexplainable can be caused by aliens. People give simple answers. This may be more attributable to the inertia of human thought, just as people in the Middle Ages attributed all unexplained phenomena to God. But this is an assumption after all. The gratifying discovery makes the research "gradually better". Only by finding evidence that can make the hypothesis true can the hypothesis become a fact. In this regard, people either try their best to find evidence for their hypothesis, or they find unique ways to achieve the same goal. In short, people's exploration of unknown areas has never stopped. This is how the mystery of the Japanese Dragon Triangle was revealed. Among various scientific research approaches, Japanese scientists have adopted the method of trying to explain the maritime accident from the perspective of studying the underwater world. The Japan Marine Science and Technology Center has launched some deep-sea detectors into the darkness of this Devil's Sea. These detectors can reach the bottom of the deepest ocean in the world. Marine scientists spend a lot of time in the dark depths of the ocean, revealing an invisible world to people. Scientists have discovered that in the deep sea area west of Japan's Dragon Triangle, magma threatens to break through the weak crust at any time. This kind of thing happens without warning, its power is enough to penetrate the sea surface, and it can subside in an instant without leaving any evidence. When an earthquake occurs in the oceanic plate, ultrasonic waves reach the surface of the sea and form a tsunami. The huge waves caused by tsunamis can reach speeds of more than 800 kilometers per hour, which is unbearable for any sturdy ship. In addition, when a huge and devastating tsunami is generated, the height of the waves is only 1 meter or less on the vast ocean surface. The slow undulations of the waves that occur in the ocean are not easily noticed by passing ships. It's hard to get people's attention. But about 20 minutes to an hour later, disaster began to strike. If a hurricane happens to occur when a tsunami occurs, the ship in distress may not even have time to call for help, let alone self-rescue.

Different paths lead to the same destination, confirm the conclusion, and comfort the souls. While the above-mentioned scientific expeditions are ongoing, other scientists are trying to find the wrecked giant ship Derbyshire and reveal the secrets of this sea area by studying the cause of the crash. David Maughan is an expert in searching for wrecked ships and has a brilliant record of identifying shipwreck locations. At the same time, he always holds a pragmatic attitude: conducting research and giving answers from a purely scientific and technical perspective. In July 1994, a marine technology expedition team led by David Maughan set out for the Devil's Sea, convinced that they could uncover the truth. At that time, all their hopes hung on only one slim clue - when the Derbyshire disappeared, search and rescue aircraft reported that oil stains were found not far from where it last appeared. But no one is sure how big the entire area is? Was the oil stain directly above the wreck, or had it drifted 10, 50 or 100 miles? The expedition team used advanced equipment such as plane scanning sonar and diving robots. After a long search, they finally found a pile of deformed metal on the seabed about 4,000 meters underwater. Then the expedition team found a luminous iron rod nearby. ore. Since it was known that the Derbyshire was carrying iron ore, through this clue, people inferred that the deformed metal was the target object - the wreckage of the Derbyshire. Through the study of the picture data transmitted back by the detector, people finally found the answer to the sunken ship: The Derbyshire encountered a hurricane when it sailed into this sea area, but a giant ship like the Derbyshire should be able to withstand it The biggest hurricane, so the captain also confidently believed that they would arrive at their destination a few days late at most. But at this time, a tsunami suddenly occurred. The two swells formed by the tsunami lifted the steel body Derbyshire, so the suspended Derbyshire was pressed into three sections by its own gravity. Huge waves entered the cabin, causing the entire ship to sink rapidly. The sinking speed was so fast that the crew had no chance to escape. In addition, the giant ship was squeezed and deformed by the increase in seawater pressure during the sinking process, and finally turned into a pile of twisted steel when it sank to the seabed. This conclusion based on scientific argumentation not only unveiled the mystery of the Japanese Dragon Triangle, but was also enough to comfort the souls in the depths of the abyss, and also gave a satisfactory resolution to the relatives of the deceased who had been immersed in pain for a long time. Answer. Throughout history, more than 1 million ships have slept under this deep blue water in the past 2000 years, with an average of one shipwreck every 14 nautical miles. This shows that the ocean is indeed the most mysterious and unpredictable living hell on earth. So far, people still don't know how many secrets are hidden under the vast ocean waiting to be explored and discovered. Technology beyond the times: Topkapi Palace in Istanbul, Turkey, houses a peculiar ancient map. This ancient map was discovered in the early 18th century and appears to be a copy. On the map, only the Mediterranean region is drawn very accurately, while other regions, such as the Americas and Africa, are severely deformed. However, when scientists studied further, they were surprised to find that this ancient map was actually an aerial view. Compared with the photos of the Earth taken by the Apollo 8 spacecraft, this ancient map of Turkey looks like a replica. The deformed outlines of America and Africa on the map completely overlap with the photos taken by the Apollo spacecraft. What is particularly surprising is that the ancient map also depicts the complex landforms covered by the ice in Antarctica, which is exactly the same as the Antarctic expedition team used an echo sounder to detect the terrain under the Antarctic ice in 1952. Who has mastered the high technology of space aerial photography in ancient times? On the Lake Titicaca Plateau in South America, in the mysterious ruins of the ancient city of Diavalak, there is a huge statue carved from a single piece of red sandstone. The statue is engraved with a complete picture of the starry sky and hundreds of symbols. After years of research, archaeologists finally deciphered the star map and symbols. They believe that this star map depicts the ancient starry sky 27,000 years ago, and that those symbols describe extremely profound astronomical knowledge. This knowledge is beyond the grasp of modern humans. How did the ancient humans who lived on the shores of Lake Titicaca in South America tens of thousands of years ago master astronomical knowledge that surpassed modern humans? What is even more strange is that in 1921 in Zambia, Africa, the skull of an ancient Nid man was discovered. There is a round hole with smooth edges on the side. This round hole can only be formed by bullet shooting. According to research, the Ancient Nids lived in the Middle Paleolithic Age, about 70,000 years ago. Humans at that time had just learned to use stone axes! Also, in an ancient tomb on the outskirts of Baghdad, scientists discovered a set of chemical batteries from two thousand years ago. They imitated the ancient batteries and successfully obtained a voltage of 0.5 volts, which continued to work for 18 days. The first battery recognized by the world was invented in 1800 AD, just over 200 years ago. In the Egyptian pyramids, archaeologists discovered an artificial heart from the left chest of a boy's mummy. The development and use of artificial hearts in modern medicine is only about ten years old, but the mummy's artificial heart was installed into the chest of a boy through precise surgery 5,000 years ago! Is there any prehistoric super-civilization and all kinds of super-civilizations? To solve the mystery, some scientists believe that there are two explanations. One is the traces left by aliens visiting the earth, and the other is that before modern human civilization, there was a prehistoric super civilization of the previous generation of advanced humans. More and more people believe in the latter explanation, and some scientists have proposed the theory of earth civilization cycle evolution.

Bioarchaeologists believe that in the 4.5 billion years since the birth of the earth, life on earth has experienced five major extinctions, life and death, over and over again. The last mass extinction occurred 65 million years ago. Some people infer based on this that there were advanced civilizations on the earth 2 billion years ago, but they were unfortunately destroyed by a nuclear war or a huge natural disaster. Hundreds of millions of years of vicissitudes have almost erased all traces of civilization, leaving only a few relics, which has become an unsolvable mystery for modern mankind. Some people also believe that the destruction of the previous advanced civilization was due to cyclic changes in the earth's climate. Or because of the periodic disappearance of the Earth's magnetic field. When the solar system reaches a certain position in the universe, climates that are not suitable for human survival will periodically appear on the earth. The extinction of the dinosaurs 65 million years ago is an example. This cyclic climate change of the earth will lead to the cyclic origin and evolution of advanced intelligent organisms. Of course, these are just opinions, or just some speculations. However, the unsolved mysteries of super civilization are indeed worthy of serious exploration... "Do you know the mysterious pattern of a unicorn on the left and a warrior on the right on Mengding Mountain?" "There have been similar phenomena abroad. Could it be left by aliens? "Recently, at a well-known geographical forum, travel enthusiasts had a heated discussion about the mysterious appearance of Mengding Mountain, including the speeches of many experts and scholars. The reporter discovered the geology of the Sichuan Geological Engineering Survey Institute The name of expert Liu Minsheng. The reporter then contacted Liu Minsheng, and it was confirmed that there was a strange and huge pattern on Mengding Mountain (30°06') in Mingshan County, Ya'an City, located near 30° north latitude: on the left is a unicorn, On the right is a warrior wearing a feather crown! 10 sets of CCTV's "Into Science" column have conducted on-the-spot inspections here and made a series of reports. It is understood that as long as you use satellite map software, you can see that this pattern covers almost the entire dark side of Mengding Mountain. Liu Minsheng also analyzed the geographical location and structure of the entire Mengding Mountain from a geological perspective. Ya'an is a very special place geologically. It is at the core of China's "Y" shaped structure. Three geological tectonic belts in the northwest, northeast and south directions just meet in Ya'an, forming an intersection. Therefore, the geological structure here is very complex, and it has the basic conditions for the emergence of this special landform. Of course, the reasons for its formation are very complicated, and scientific conclusions must be drawn after investigation.

[Edit this paragraph] Exploring the 30° North Latitude

The 30° North latitude line runs through the four ancient civilizations and is a mysterious and peculiar latitude. Near this latitude line there are the mysterious Bermuda Triangle, the famous Egyptian pyramids, the legendary sunken Atlantis, the world's highest peak Mount Everest... Whether it is coincidence or destiny, the 30° north latitude line is a line that can attract people's extreme attention. zone. On November 14, the "Exploring 30° North Latitude - China-US Joint Sichuan-Tibet Expedition" activity has carried out a large-scale "CT" scan of the 30° north latitude area in China, and is currently processing a large amount of information. It is estimated that artificial seismic sounding profiles will be drawn in less than half a year, which is the first step for my country to occupy its due status as a major country in the international geoscience community. According to Wang Chunyong, director of the Institute of Geophysics of the China Earthquake Administration, the chief scientist of this scientific expedition, this expedition took more than ten years of preparation. China and the United States invested *** 5.5 million yuan and used more than 250 sets of international advanced observation equipment. The total length of the survey line is more than 3,500 kilometers, the scope of the investigation reaches more than 100,000 square kilometers, and it lasted more than 30 days. Its purpose is to explore the secrets of the deep crust of Sichuan and Tibet through artificial earthquakes. This has far-reaching significance for understanding the distribution of underground mineral deposits and earthquake prediction in the Qinghai-Tibet Plateau, Sichuan and Yunnan regions. Disaster-prone 30° north latitude Gu Jianhua, a disaster expert from the China Earthquake Administration, told reporters that 30° north latitude has always been a troubled zone, with earthquakes, volcanoes, shipwrecks, and air crashes occurring from time to time. According to historical records, there have been 4 earthquakes with magnitude greater than 8 in Tibet, 11 earthquakes with magnitudes 7-7.9, and 86 earthquakes with magnitudes 6-6.9. On August 15, 1950, an earthquake of magnitude 8.6 occurred in Medog, Chayu, eastern Tibet. Professor Oshengovsky, a famous geographer from the former Soviet Union, made an astonishing discovery in the Tibetan Scriptures in 1931. Thousands of years ago, in today's Bahamas, Annales Islands and Gulf of Mexico, a huge continent sank, but unfortunately he did not find Tibet at that time. The world-famous Bermuda Triangle is a mysterious sea area where hundreds of ships and planes have disappeared since the 16th century. . Dr. He said that its formation is entirely possible because it is related to the sinking of continents. The continents on the earth sank. The impact on the earth caused the Tibetan Plateau to rise and created the folds of the Himalayas. About 40 million years ago, at the beginning of the Tertiary Period, the Himalayas, the tallest mountain range on the Tibetan Plateau, was still in a vast ocean, known in history as the Paleo-Tethys Sea. At that time, the ancient Indian continent was not part of Asia. It faced the ancient Eurasian continent across the sea at 40° south latitude. After a long geological history, the ancient Tethys plate traveled more than 7,000 kilometers toward Europe. The subcontinent drifted and subducted under the Eurasian plate. In the last few "short" millions of years, the intense plate subduction caused the ancient Tethys Sea to disappear, and the ancient Indian continent merged with the ancient Eurasian continent. , forming Mount Everest, the third pole of the earth.

30° North Latitude to be studied During the 4.5 billion years of historical changes, the earth has formed today's unique geology and landforms. Asked about these strange phenomena at 30° north latitude, Wang Chunyong told reporters that although geophysicists have discovered that the crust, mantle and core are distributed from the surface to the center of the earth, as well as the three-dimensional lateral inhomogeneity of the three at different scales, but There are some strange natural phenomena that we are still unable to understand, and many issues still require further research. Dr. Wu Qingju of the China Earthquake Administration said that the 30° north latitude phenomenon has a certain degree of inevitability. 30° north latitude is called the umbilical cord of the earth. Its trace element minerals, magnetic field, electric field, and gravity field have an impact on people and the environment. In addition, the rotation of the earth causes different internal forces to act at different latitudes. Bermuda is caused by the magnetic field, and the uplift of the Tibetan Plateau is caused by plate collisions. The 100-ton TNT blast that shocked the Tibetan Plateau The Tibetan Plateau is a sacred and mysterious land, but it is also a hot spot for earth science research. The study of the deep structure of the Tibetan Plateau between China and the United States in 1991 kicked off the geophysical research on the Tibetan Plateau from shallow to deep parts. In late August this year, the energy generated by large-yield blasting passed through the 70-kilometer crust and upper mantle of the Tibetan Plateau in the form of seismic waves. Internationally advanced precision instruments and equipment were used to receive the seismic waves that returned to the ground and carried important scientific information deep into the Tibetan Plateau. . Finally, a variety of highly intensive calculation methods were used to outline the cross-sectional structure of eastern Sichuan, Tibet, and Tibet.

The number of words is definitely enough