Monday, January 14, 2008

Qin Dynasty


The Qin Dynasty

The Qin Dynasty came to power in 221 BC, and it lasted until 206 BC. The capital is also known as Xiangyang. The Qin dynasty had about 40 million people. It took over the Zhou dynasty.



Reason for Take-Over
Much of what came to constitute the now-modern nation of China was unified for the first time in 221 B.C. In that year, the western state of Qin, the most aggressive of the Warring States, absorbed the last of its rival adjacent states. That same year, the first Emperor of China, Qin Shihuangdi, conquered the rest of China after a few hundred years of fragmentation.

There are two major reasons why he won, thus allowing the formation of the Qin Dynasty. Firstly, he was a true Legalist, who did things strictly abided to law; things like execute generals for showing up late to caucuses. Secondly, the state of Qin had a lot of natural iron ore, and consequently, at the dawn of the iron age, had the ability to produce iron weapons like no other armies could. Qin Shihuangdi had a great many accomplishments, not the least of which was the linking together of many of the old defensive walls of the Great Wall of China. Therefore, with the above reasons, the Qin state was by far and undoubtedly the strongest of all states, thus allowing it unperturbed power to overtake the rest of mainland China.
Leaders

Qin Shi Huangdi
There were three emperors that were ruli
ng during the Qin dynasty. The first emperor was Qin Shi Huangdi. He demanded centralized, not hereditary aristocratic system in replace of the Zhou dynasty’s feudal system. The Qin Empire depended on the philosophy of legalism. In order to prevent harm towards Qin dynasty, Qun Shihuang ordered the take over of weapons and make sure they were stored in the capital. He was afraid of the return of the feudal lords. Therefore, he destroyed the walls that had separated the previous six states. He made a national conscription, which every male between the age of seventeen and sixty years old were forced to stay in the army for a year. In order for Qin dynasty to be constantly building up, they were aided by the frequent military expeditions pushing the frontiers both north and south. After he succeded his conquest of the six warring states in China, he head his aim at the Xiongnu, which has a powerful force and expanding to the east and west. Qin Shi Huang sent 300,000 strong army lead by General Meng Tian to move the Xiongnu northwards about 350 kilometers and eventually built the Great Wall of China to prevent from their invasion. He built a wall by various warring states that were connected to make a wall. Great Wall of China is 4,856 distance long. Large parts were then re-constructed by the Ming dynasty. Besides, Qin Shihuang also built canals and bridges to strengthen imperial rule. He censored the book by burning intellectual books and Burying Confusions alive. The only books that were not forbidden are writings about medicine, herbs, divining and agriculture. He closed all the schools and he buried around 346 Confusion. A big project was built next to the emperor’s tomb, which is also known as the Terracotta Army, which was built to protect the tomb of Qin Shi Huang. However, in the later years of ruling, his behaviors became strange and unstable. This may be because of drinking solutions containing mercury and other deadly compounds because he desperate to search for a medicine that can make him immortal.





Huhai
Huhai became an emperor after Qin Shi Huang died suddenly at Shaqui prefecture. Two high officials convinced Huhai to alter Qin Shi Huang’s wish. He ordered Qin Shi Huang’s first son (Fusu) to commit suicide and making himself the emperor. Besides, there was a faithful supporter of Fusu, Meng Tian and Huhai put the Meng’s family into death. One of the high officials, Zao Gao step by step wanting to get the thrown. He basically made Huhai a “puppet emperor”. Three years after Qin Shi Huang died, there were revolts by the peasants, prisoners, soldiers, nobles of the Six Warring State. Cheng Sheng and Wu Guang, two groups of around 900 soldiers started to defend Xiongnu. Battle of Julu was held, which was a major defeat of the Qin Dynasty.





Ziying
Qin no longer controlled the whole China. At
the start point of October 207 BC, Zao Gao forced Huhai to commit suicide and soon replaced by Fusu’s son, Ziying. Soon after, Ziying killed Zao Gao and threw in the towel to Liu Bang in the beginning of December 207 BC. However, Liu Bang had to hand over Xiangyang and Ziying to Xiang Yu. Xiang Yu then killed Ziying and burned down the palace at the end of January 206 BC. The Qin dynasty finally came to an end, three years after the death of Qin Shi Huang, which was less than twenty years after it was founded.







Foreign Leader: Alexander the Great
Alexander the Great (356-323 BC): the Macedonian king who defeated his Persian colleague Darius III Codomannus and conquer
ed the Achaemenid Empire. During his campaigns, Alexander visited a. o. Egypt, Babylonia, Persis, Media, Bactria, the Punjab, and the valley of the Indus. In the second half of his reign, he had to find a way to rule his newly conquered countries. Therefore, he made Babylon his capital and introduced the oriental court ceremonial, which caused great tensions with his Macedonian and Greek officers.

In 340 BC, when Philip went to Byzantium to fight rebels, Alexander, a mere 16 years old, was left in charge of Macedonia as regent, with the power to rule in Philip's name in his absence. That Alexander was given such a position at such a young age indicates that he was already accomplished in battle. But Alexander never got along well with his father, although Philip was proud of Alexander for the Bucephalus incident. Alexander had always been closer to Olympia than to Philip. Philip and Olympia also did not get along all that well, owing primarily to Olympia's non-Macedonian heritage.

Accomplishments
Government
First, the Qin territory was governed by a legalist form. It involves punishments and also rewards. During the Qin dynasty, government was a monarchy.
Achievements
Terracotta Army- During the Qin Dynasty, it was built to protect the tomb of Qin Shi Huang. Rubbing of an inscription of a Qin bronze weight in small seal script. The characters are: 盡並...詣行. Currency became standardized as a circular copper coin with a square hole in the middle.




Great Wall of China- To protect China from Xiongnu’s invasion. The language and writing of China, which had varied greatly from area to area during the Warring States





Period- Better to communicate across country.



Ruan- another name qin pipa or yueqin (moon-shaped short-necked lute). It was constructed during the Qin dynasty and is now commonly used in the modern Chinese orchestra.


Reason for Fall
Short after Qin Shi Huang’s death, Qin dynasty
ended and Han dynasty broke out during 206 BC. The major reason for the fall of Qin dynasty was because of the Battle of Julu, when Huhai was the emperor. Xiang Y
u received victory, defeating a large amount of Qin army with a little amount of the number of soldiers. This battle was also known as the foundation of the military decline of Qin. The major Qin forces were eliminated. First, Xiang Yu sent 20,000 Chu men across the river to Julu. Then, Xiang Yu sent his major soldiers across the river, and sinking his ships to make sure no one retreats from the battle. When they got to the battlefield, the Zhao forces had been starved. Xiang ordered for three days of food supplies and the Chu troops realized right away that the only way to let them survive is to defeat the Qin forces and get food from them. Therefore, Xiang’s army was very fierce and won every battle, as if one Chu soldier can kill ten Qin soldiers. The battle of Julu was the major victory for the Xiang. Lastly, the Battle of Julu marked the end of the Qin dynasty.

Works Cited:
http://www.mnsu.edu/emuseum/prehistory/china/early_imperial_china/qin.html http://en.wikipedia.org/wiki/Qin_Dynasty http://www.chinaknowledge.de/History/Han/qin-rulers.html http://www.chinaculture.org/gb/en_aboutchina/2003-09/24/content_22719.htm
http://en.wikipedia.org/wiki/Alexander_the_Great

Thursday, November 15, 2007

♪♪ Avalanche Introduction ♪♪

Introduction
An avalanche occurs when a big amount of snow flows down a mountainside. Avalanches also pass through rocks slides and debris flows. It is also known as the biggest dangers and harm in the mountains because many lives were lost from this disaster. There are many factors that lead to an avalanche. Point-release avalanches happen when the internal strength of the snow layers cannot support the weight of the outer most layers. It occurs most often on steeper terrain. In contrast, slab avalanches occur when there is a strong and firm layer of snow, which is also called a slab. When large amount of snow are deposited on the lee slope, it can be deduced that a slab avalanche has occurred recently. Last but not least, the last starting type is a slush avalanche. It happens due to the saturation of snow of water.


When the avalanches move down the slope, the snowpack would grow in its size. It may alloy with air and transform into a powder cloud, which is known as a powder snow avalanche. It is a destructive snow particle that drifts as gravity current. Power avalanches are the largest avalanches that can reach 300km/hr and 10,000,000 tonnes of snow and can drift for a long distance along flat valley bottoms and also uphill for short distances.

The three main parts of an avalanche are the starting zone, the avalanche track and the run-out zone. The initial stage where the snow detaches from the entire layer is the process of the starting zone. This deformation of the original snow structure causes the starting zone to be the most unstable area, nearest to the summits of the snow mountain.

This is followed by the vertical path taken by an avalanche, ranging from the starting zone (usually near the summit), all the way down to the foot of the mountain (possibly at sea level). If the avalanche track can be distinguished by the naked eye, it infers that it is a track where large avalanches occur frequently. This is possibly because of an easy observation of the absence of trees or clearings resembling chutes.

At the very bottom of the avalanche track is the run-out zone, where large amounts of snow and debris are deposited and collected in a heap. This is the area of greatest danger: if people were to get caught in the path of an avalanche track, the sheer force would completely immerse them in the run-out zone, thus burying them. This could be fatal due to the coldness of the collected snow.

Causes
Snow avalanches occur when the outermost layer is unable to support the mass of the inner layers of snow. There is a low timber line that will worsen the threat because when it begins to move, the trees help to hold the snow and decrease the pace. Avalanches are caused by a surplus of materials, which increases the chance of causing an avalanche. It is caused by a number of factors, which include terrain, snow structure and characteristics, and weather.


There is a low risk of avalanche when slopes are flatter than 25 degrees and steeper than 60 degrees. Snow does not aggregate on steeper slopes and also does not flow easily on flatter slopes. The angle of repose can be very effective. Avalanches are great between 35 and 45 degrees and greatest on 38 degrees. The more man-made modifications like skiers are applied to a snow mountain, the more likely an avalanche will occur at greater frequencies. Many different snow composition and deposition characteristics affect the likely of an avalanche. In order for an avalanche to occur, a snowpack must have an instable layer below the surface. Weather can be a big influence of an avalanche. Avalanche occurs when the temperature is high and gentle free-thaw cycles take place. This cycle is the melting and refreezing of water in the snow, which strengthens the snow when freezing and weakens when melting. If there is a sudden rise in the temperature, an avalanche would occur.

Effects
On November 13th, 1995, an avalanche occurred in the Mount Everest region, Nepal. It is known as Nepal's worst accident. This accident killed 26 people, 50% were Japanese. The wave of snow buried 11 porters and guides. Also, it buried 2 of the Pangka region, which is known as the world's highest peak.
Mr. Miyahara: "The area was completely covered by snow. We could only see rooftops of the huts where the trekkers were staying."
Protection Measures
There are ways to prevent avalanches from happening, for example "Explosives". Large avalanche disasters are prevented by the use of explosives on small snow mountains to reduce the build up of snow. Snow fences and light walls are built direct of snow. Snow is built around the fence and facing the prevailing winds, causing the snow build-up to be less. Besides, when there are many trees, they can decrease the strength of the avalanches. When there is an avalanche, the tree causes the snow to slow down.
Furthermore, artificial barriers can be effective to reduce avalanches. There are few kinds, which include snow net, which is a composed of guy wires that strengthen their foundations in the earth, thus increasing their capacity, to prevent avalanches. Snow net can be constructed of steel, wood, or concrete. Also, earth mounds are placed on the path of the avalanches to slow the pace.


Conclusion
The rate of global warming will weaken the snow and making it easier to melt. The impact that this will have on snow-mountains is that it will increase the tendency of an avalanche to occur. In addition, if the population of a snow-mountainous country continues to increase, then the amount of man-caused disturbance will also impact on the frequency of avalanches.