From the end of 20 10 to February of 20 1 10, there are about 10 articles in domestic major news, which should be more than *** 100 words. It's a geography homework in senior two, and it's very profes

From the end of 20 10 to February of 20 1 10, there are about 10 articles in domestic major news, which should be more than *** 100 words. It's a geography homework in senior two, and it's very professional. The largest super volcano in the world may erupt for the first time in 600,000 years.

On October 26th, 65438/kloc-0, Beijing time, American scientists said that the underground super volcano of Yellowstone National Park, the world's largest super volcano, dare not erupt. Once it erupts, two-thirds of the land in the United States may be buried by volcanic ash.

It is reported that the super volcano under Yellowstone National Park has been rising at a record rate since 2004. According to scientists' prediction, once it erupts, its destructive power will be 1000 times that of Mount St. hellens 1980. At that time, lava will spray into the sky, and volcanic ash clouds that destroy plants will also spew out, and places beyond 1000 miles (about 1600 kilometers) will be covered with volcanic ash as thick as 10 feet (about 3 meters). Two-thirds of the United States will be uninhabitable, volcanic eruptions will release toxic gases into the air, thousands of flights will be grounded and millions of people will be displaced.

The underground supervolcano in Yellowstone National Park is the largest supervolcano in the world. If it is predicted by scientists, it will be its first eruption in 600,000 years. In the past 265,438+million years, this volcano has erupted three times on a large scale, and researchers say it may erupt again soon. According to researchers, the underground super volcano in Huangshi National Park has been rising at a record rate since 2004-in the past three years alone, its ground has been rising at a rate of 3 inches (about 7.6 cm) per year, which is the fastest speed since 1923 recorded.

However, due to the lack of data, they did not issue a comprehensive early warning and could not accurately predict when the next disaster would come. Once it finally erupts, its destructive power will dwarf the eruption of Eyjafjallajokull volcano in Iceland. Eyjafjallajokull volcano erupted in April, 20 10, and the volcanic ash spewed out was scattered in the sky, causing global air traffic paralysis for several days.

The ice in the Yellow Sea and Bohai Sea in China is 35,800 square kilometers, covering 40% of the Bohai Sea.

China news agency, Beijing 65438+124 October (Reporter Ruan Yulin) According to the latest news released by the National Marine Environmental Forecasting Center, on the 24th, the sea ice area of the Yellow Sea and Bohai Sea in China has reached 35,793 square kilometers. The area of floating ice in Bohai Sea is 3 1.600 square kilometers, and 40% of Bohai Sea is covered by sea ice. The Ocean Forecasting Station of the State Oceanic Administration released the yellow sea ice warning in Laizhou Bay and the blue sea ice warning in Liaodong Bay on the 24th.

According to the satellite remote sensing monitoring on 24th, the sea ice area in the Yellow Sea and Bohai Sea in China has reached 35,793 square kilometers. The maximum outer line of sea ice in Laizhou Bay of Bohai Sea is 37 nautical miles, with a distribution area of 6 188 square kilometers, accounting for 69% of the sea area, reaching the yellow warning standard of sea ice. The National Ocean Forecasting Station issued a yellow warning for sea ice in Laizhou Bay. The maximum outer line of sea ice in Liaodong Bay is 72 nautical miles, with a distribution area of 17436 square kilometers, accounting for 57% of the total area of the sea area, slightly increasing from the previous day; The largest outer line of sea ice in Bohai Bay is 22 nautical miles, with a distribution area of 8004 square kilometers, accounting for 54% of the total area of the sea area; The maximum outer line of sea ice in the northern part of the Yellow Sea is 13 nautical miles, and the distribution area is 4 165 square kilometers, which is slightly higher than the previous day.

The Ocean Forecasting Station of the State Oceanic Administration predicts that the temperature will be moderate and the ice conditions will be stable from 25th to 26th. It is estimated that in the next three days, the maximum floating ice range in Liaodong Bay of Bohai Sea is 65-75 nautical miles, and the maximum ice thickness is 35 cm. The maximum floating ice range in Bohai Bay is 20-30 nautical miles, and the maximum ice thickness is 25 cm. The maximum range of ice floes in Laizhou Bay is 35-45 nautical miles, and the maximum ice thickness is 25 cm. The maximum floating ice range in the northern Yellow Sea is 15-25 nautical miles, and the maximum ice thickness is 25 cm.

Meteorologists say that global warming leads to extreme weather or once in 20 years.

Public trust. Com 65438+1October 18 According to Taiwan Province Lianhe Evening News 18, meteorologists said that 20 10 was an "extreme weather year" and extreme phenomena continued into the New Year. A once-in-a-century flood occurred in Australia, a mudslide in Brazil killed more than 670 people, and 360,000 people were homeless in Sri Lanka, China and Sri Lanka.

This winter, extreme weather has emerged one after another all over the world. Experts pointed out that the abnormal weather in the northern hemisphere originated from the cold wind in the Arctic, while the southern hemisphere was mainly affected by the anti-El Ni? o phenomenon. Experts from the World Meteorological Organization warned that with global warming, the extreme weather that once happened once in a hundred years may become "once in 20 years".

Climate experts point out that due to climate warming, the volume of the Arctic ice sheet has decreased by 20% in the past 30 years. The polar ocean is not covered with ice, and the relatively warm air on the sea surface will move to the cold high altitude, thus affecting the polar atmospheric circulation. The polar cold air mass continues to invade the south and dominate the climate in the northern hemisphere.

Not long ago, the heavy snow in Europe was caused by the cold air in the Arctic. As far as the impact is concerned, there has been a "vision" of snow in Hawaii in the United States recently, and freezing rain has also appeared in Guizhou, where China should have four seasons like spring. South Korea has the lowest temperature in 96 years, and the Han River has frozen.

The floods in Australia were caused by the anti-El Nino phenomenon, which started at 20 10, and the floods in Indonesia and Brazil were also affected by the anti-El Nino phenomenon.

20 10 has always been the wettest and hottest year, and there are 18 countries with the highest temperature in history. Asral, an expert from the World Meteorological Organization, said that computer simulation studies show that with global warming, extreme weather phenomena will appear more frequently and intensively in the future, affecting a wider area. For example, the heat wave that only appeared once every 0/00 years in the past/kloc-may become once every 20 years. By the end of this century, the summer in Europe in 2003 was extremely hot, and it may no longer be very special.

Fujian strengthens marine ecological restoration and strictly controls land reclamation in the bay.

China News Service, Fuzhou, 65438+10.6 (Reporter Sun Xianxun) Fujian, a major maritime province, will focus on strengthening marine environmental protection in coastal waters this year, and implement ecological protection, restoration and construction in coastal waters, so that it will present a beautiful scene of "blue sea and silver beaches, seagulls spreading their wings and eager to try".

Liu, director of the Fujian Provincial Department of Oceans and Fisheries, said on the 6th that in order to build a "blue home" with clean sea area and beautiful environment, Fujian will further strengthen environmental pollution remediation and marine ecological restoration, intensify the comprehensive remediation of marine environment in key bays, estuaries and fish farming concentration areas, take measures such as returning farmland to the sea to intercept pollution, expanding mangrove species and recovering pollutants, adjust the farming density in the culture concentration areas, promote scientific breeding and drug use, promote ecological farming mode, and strengthen the monitoring of land-based pollutants entering the sea.

Recently, the Fujian provincial government issued a document, proposing that by 20 12, the area where the seawater quality in coastal waters meets or exceeds the second-class water quality standard will increase to more than 65% by 20 15.

Liu said that in order to protect the marine environment in coastal waters, Fujian encourages and advocates the scientific use of the sea, strictly controls reclamation in the bay in the future, and guides and encourages reclamation outside the bay; Actively guide coastal municipal governments to carry out regional sea use planning, promote intensive and economical use of the sea, reduce environmental pollution in the bay and protect the marine ecological environment; Strict environmental impact assessment system for sea-related construction projects to prevent and reduce pollution damage to the marine environment caused by sea-related and coastal construction projects.

He said that Fujian will further improve the emergency mechanism for sudden pollution accidents and marine disasters, improve the emergency plan for marine disasters and sudden marine environmental pollution incidents, and improve the emergency response capability for sudden pollution incidents in sea areas and fishery waters; According to the principle of "land and sea as a whole, river and sea as a whole", we will promote the connection between pollution prevention in coastal waters and environmental protection in land and river basins.

In recent years, Fujian has actively built a strong marine economy. The marine economy has sustained, healthy and rapid development, and the total marine production value ranks in the forefront of the mainland. However, with the rapid development of coastal economy, the pressure on the ecological environment in Fujian coastal waters has been increasing, mainly because the overall pollution trend of the marine environment has not been effectively controlled, the ecosystems in some coastal areas have been seriously damaged, the emergency capacity of marine pollution prevention and control is weak, and the construction of marine environmental protection infrastructure is relatively backward.

Scientists search for 170 meteorite in Antarctic ice sheet.

Beijing time 65438+1October 5 news, the American space network reported that on the Antarctic ice sheet, a group of scientists are looking around at the rocks on the ground. These people are all meteorite scientists, and their work is part of the 20 10-20 1 1 annual "Antarctic meteorite search plan" (ANSMET).

An expedition member updated her blog from the LaPaz ice sheet in Antarctica, and she commented that their current state is "very good".

"We have been camping on the ice field here for two weeks, and we have made great progress," wrote Melissa Lane. She is from the Institute of Planetary Science (PSI) in Tucson, Arizona, USA. "We found 170 meteorite. From the perspective of petrology, the most interesting one is the newly discovered one."

Lenny is a planetary geologist on the expedition, and the team also includes John Schutt, a field science director and safety official with 30 years' experience. Astronaut and doctor Serena Onon from NASA Johnson Space Center; And Stephen Ballou, a geologist at Billeuther College in Wisconsin.

The investigation team arrived in La Paz ice sheet on June 65438+February 65438+June last year, and took tents, cooking supplies and other necessities for the team members. The next day, two other planes brought snowmobiles, which made impatient scientists start their first meteorite search trip.

"Everyone is excited about the beautiful scenery here and the experience of driving these novel vehicles across the vast ice sheet," Barau said. "Every one of us is very happy, and we are very happy to be here. But in fact, the only purpose we are here is to work. And it will be difficult to work here, and all ordinary little things will become difficult. Including dressing, eating, and even just getting out of the tent is not easy. "

However, the expedition team is still excited that they can stay in Antarctica for another 25 days and have the opportunity to go to Patuxet Ridge. We can continue our passion for meteorite search. Onon, a member of NASA, also recorded their experiences in her blog.

"‘Ski-Doos' snowmobiles are our best partners. It is well-equipped, carrying a life-saving bag that can support four people, meteorite collection equipment, a few liters of water, food, medical kits, iridium satellite phones and GPS positioning equipment. " Onon said. "We conducted a detailed inspection of the snowmobile engine in the morning to ensure its good performance."

Since 1976, the Antarctic meteorite search program has been funded by the National Science Foundation and the Planetary Science Department of NASA.

Meteorites have been found since Antarctica was discovered. The first Antarctic meteorite was discovered by an Australian expedition in 19 12. So, how do the players collect meteorites?

First, they will use the meteorite collection kit they carry with them. This bag should include the following tools: sterile bag for putting meteorites, signs marked with numbers, sealed tape, notebook for recording meteorite information, scissors for cutting things.

Players must be very careful not to touch meteorites, or even let the exhaled gas touch meteorites. It is absolutely forbidden to study meteorites when you have a cold and a runny nose.

Meteorites should be sealed in sterile bags as soon as possible, so the general practice is to open the bags and invert the meteorites. Meteorites should be measured and sometimes photographed, and their size, color and possible classification should be recorded. Then, put an aluminum digital nameplate in the bag and seal the mouth of the bag. With luck, after a day's collection, the team members' backpacks should be bulging and full of meteorites.

These collected meteorites will be frozen and sent to the Antarctic meteorite isolation laboratory of NASA Johnson Space Center in Houston. Here, meteorite samples will be carefully dried and sliced and distributed to research institutions.

Japan will build Okinawa Reef into a marine resource survey base.

BEIJING, 65438+1October 6 (Xinhua) According to a report by Japan's Kyodo News Agency on the 6th, the Japanese government will build a series of facilities in "Okinawa Island" (known as Okinawa Reef in China) from 20 1 1 year to turn it into a marine resources investigation base. The Japanese government will spend 75 billion yen (about 6 billion yuan) in six years to build a 150-200-meter-long wharf for berthing large ships such as marine survey ships. In addition, due to the possible existence of rare metals and other resources in the surrounding waters, the Japanese government plans to investigate this in the future.

According to the report, Japan's move is aimed at preserving the exploration and development sovereignty of the exclusive economic zone (EEZ) centered on Okinawa Reef, with a radius of 200 nautical miles (about 370 kilometers) and an area of about 400,000 square kilometers, and at the same time countering China, which has always maintained that the "island" is just a "rock reef". The dispute over maritime rights and interests between China and Japan will intensify.

Chongzhiniao Reef is 4.5km long from east to west and 1.7km long from north to south. At high tide, only the tops of the North Island and the East Island (both about 1 m) are exposed to the sea, and they are currently preserved by circular concrete revetment.

Because huge waves in the Pacific will accelerate the aging of cement buildings, new facilities must be able to withstand bad weather. In the plan, a wharf will be built outside the Okinawa Reef, and a road for heavy machinery and other vehicles will be laid between it and the North Island. After April, the relevant departments will measure the seabed where the ships dock and investigate the strength and direction of the waves.

The Japanese government passed a law in May last year, stipulating that Okinawa Reef at the southernmost tip of Japan and Nanniao Island (affiliated to Tokyo) at the easternmost tip of Japan are under the state management, and decided to build ports and other facilities.

Respondents: Enthusiastic users | 2011-2-13 20: 45

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