Mount Everest 8848 will start high retest rewrite - HC Network sports and leisure industry

Mount Everest 8848 will start high retest rewrite - HC Network sports and leisure industry

3 17 morning 8:15, in Qinghai and Tibet, the Kunlun Mountains and the Tanggula border area, clad in silvery white, snow and fog. More than 4500 meters above sea level here, six winds and low temperatures of minus 20 degrees Celsius so angry all things lost ... ...

Under the rolling peaks, among the biting wind, along the highway from Golmud in Qinghai to Amdo mountains about 800 kilometers, has been camping overnight measurement of Mount Qomolangma in China more than 30 team members bracing, were measured in four main points and eight attached measuring point, while open carefully set up the GPS global satellite navigation system switch, launched a 48-hour on-line observation. The line is a concern in 2005 observed a high degree of retest action Everest the first measurement after start, marking the height of Mount Qomolangma started action to implement the retest.

"On schedule" frequently accidents

Everest retest in accordance with the Plan of Action 2005, the starting line observations are scheduled. But the "schedule" for achieving hard-won! The first from the National Geodetic Survey and Mapping Office nearly 40-member team of Chinese Everest survey team is on March 10 starting from Xi'an, in the next day, just enter the altitude of 2000 meters high plateau, a major new acquisition trucks because of the "acclimatization", the circuit board was forced to anchor failure; the third day, there are a large truck broke down, can not drive ... ... the accident disrupted the traffic plan. Everest to not delay the process of resumption of testing operations, the survey team immediately decided: the one hand, several members left the scene, while deploying new car from Xian; the other hand, other members of the first to rush to Golmud, while two kcal car Decomposition of goods, the equipment needed first transferred to other vehicles. Reached Golmud, the several new players have appeared in different degrees of altitude sickness, headaches and vomiting also occurred. The face of accidents and difficulties, the team members were quickly re-grouping of vehicles and personnel, the task has been re-division of labor, to ensure that the joint measurement is not an extension ... ...

Retest tested At an altitude of 4,800 meters in the Kunlun Mountains Wudaoliang main measurement points, measurement at a smooth start, the task for the measurement of the first National Geodetic Survey and Mapping Office team vice captain Rice with High Yield told reporters: Starting from today, Everest height retest action even if fully carried out. In the following more than one month, the measurement team in the Qinghai-Tibet Plateau main measuring points of 30 and 50 measuring points attached to start six-line observation action. The footprint will measure members through an unpopulated area of northern Tibet and Kunlun, Tanggula, Himalayas, Tibet and other mountain Gangdese. These are carefully selected measurement points are typical of the Tibetan Plateau blocks the geographical punctuation, on-line observation of the data results will reflect the change process, details of the Tibetan Plateau crust, achieving the goal of high precision measurement of Mount Qomolangma has important significance.

In high-altitude Tibetan Plateau, 48 hours of on-line continuous observation of the players is the market tough challenge:

First of all, online observation requires simultaneous measurement points must be observed to ensure the accuracy of data. This means that no matter what the weather is bad, how difficult the road, team members must arrive at the scheduled time of measurement points. In fact, many measurement points not in the Highway, some in the top, some in the Gobi, some in the grass, is not easy to find these points. In this on-line observation, to find a measurement point Tanggula Range, a group of players spent a day.

Second, find the measurement point, set up equipment required is also high. To ensure accuracy, GPS equipment set up must be strict, leveling, alignment, and to be placed in a stable safe place, it is necessary to facilitate the operation, but also without prejudice to the reception of satellite signals; erection of antenna, antenna directional line should point to magnetic north directional error of not more than 5o. Reporter in the five beams that although team members are "skilled", but still work in the cold for two hours to complete the "technical activities."

Third, adverse climate and environment, team members need to work state monitoring equipment at any time, every two hours to carefully check over the work process equipment and receive data situation. For example, in the observation period before and after each measurement to the first antenna high, if the error is less than 3 mm, taking the number of uses, otherwise, we must re-erection, leveling instrument. To ensure the equipment to work properly, the players were in the measurement process can be described as "the fancy takes." Reporter saw: seismic stations in Golmud Golmud is located in the main measurement points, members of his down jacket Cheng Lin wrapped up the data receiver, mounted on backpack; the main beam in the five measurement points, the device is placed on team members Zhang Jianhua their tents to rest, covered with a blanket up ... ... 45-year-old players Guoqing Sheng's face filled with measurement of the vicissitudes, he smiled and told reporters: "I measured out the field for 26 years, there is one lesson: These machines than we are squeamish, they can enjoy nature than we are good. "

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