UK team unlocking secrets of North Korea volcano

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UK team unlocking secrets of North Korea volcano
In this Wednesday, June 18, 2014 photo, clouds float over the peak of Mt. Paektu in North Korea's Ryanggang province. More than a thousand years ago, a huge volcano straddling the border between North Korea and China was the site of one of the biggest eruptions in human history, blanketing eastern Asia in its ash. But unlike other major volcanos around the world, the remote and politically sensitive Mount Paektu remains almost a complete mystery to foreign scientists who have - until recently - been unable to conduct on-site studies. (AP Photo/David Guttenfelder)
In this Wednesday, June 18, 2014 photo, a North Korean woman walks on the peak of Mt. Paektu in North Korea's Ryanggang province. More than a thousand years ago, a huge volcano straddling the border between North Korea and China was the site of one of the biggest eruptions in human history, blanketing eastern Asia in its ash. But unlike other major volcanos around the world, the remote and politically sensitive Mount Paektu remains almost a complete mystery to foreign scientists who have - until recently - been unable to conduct on-site studies. (AP Photo/David Guttenfelder)
In this Wednesday, June 18, 2014 photo, a North Korean national television station camera crew records the scenery from the peak of Mt. Paektu in North Korea's Ryanggang province. More than a thousand years ago, a huge volcano straddling the border between North Korea and China was the site of one of the biggest eruptions in human history, blanketing eastern Asia in its ash. But unlike other major volcanos around the world, the remote and politically sensitive Mount Paektu remains almost a complete mystery to foreign scientists who have - until recently - been unable to conduct on-site studies. (AP Photo/David Guttenfelder)
Images of the late North Korean leader Kim Il Sung and Mt. Paektu appear on a screen behind a choir during a concert in Pyongyang on Monday April 16, 2012 to commemorate 100 years since the birth of Kim Il Sung. (AP Photo/David Guttenfelder)
A North Korean village is blanketed by snow near Rimyongsu Falls at the base of Mt. Paektu, North Korea on Wednesday April 4, 2012. (AP Photo/David Guttenfelder)
In this Monday, April 2, 2012 photo, a female North Korean soldier, working as a guide, enters what was a secret military camp during the fight against the Japanese and the site of what North Koreans say is the home of the late North Korean leader Kim Il Sung and the birthplace of his son and late leader Kim Jong Il at the foot of Mount Paektu, North Korea. (AP Photo/David Guttenfelder)
[UNVERIFIED CONTENT] Soldier on Mount Paektu North Korea overlooking Lake Chon.
MT. BAEKTU, NORTH KOREA - SEPTEMBER 2011: Mt. Baektu on the North Korea/China border. (Photo by Mark Edward Harris/Getty Images)
RIMYONGSU FALLS, NORTH KOREA - SEPTEMBER 2011: Rimyongsu Falls near the base of Mt. Baektu in North Korea. (Photo by Mark Edward Harris/Getty Images)
MT. BAEKTU, NORTH KOREA - SEPTEMBER 2011: Soldiers on Mt. Baektu near the North Korea/China border. (Photo by Mark Edward Harris/Getty Images)
NORTH KOREA - MAY 03: Monument in front of mount Paektu in Samiyon, North Korea on May 03, 2010. (Photo by Eric LAFFORGUE/Gamma-Rapho via Getty Images)
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By ERIC TALMADGE

PYONGYANG, North Korea (AP) - More than a thousand years ago, a huge volcano straddling the border between North Korea and China was the site of one of the biggest eruptions in human history, blanketing eastern Asia in its ash. But unlike other major volcanos around the world, the remote and politically sensitive Mount Paektu remains almost a complete mystery to foreign scientists who have - until recently - been unable to conduct on-site studies.

Fresh off their third visit to the volcano, two British scientists studying the mountain in an unprecedented joint project with North Korea say they may soon be able to reveal some secrets of the volcano, including its likelihood of erupting again. They're collecting seismic data and studying rocks ejected in Paektu's "millennium eruption" sometime in the 10th century.

"It's one of the biggest eruptions in the last few thousands of years and we don't have yet a historical date for it," Clive Oppenheimer, a professor of volcanology at Cambridge University, told The Associated Press after returning to Pyongyang last week from an eight-day trip to the volcano. "The rocks are a bit like the black box of a flight recording. There's so much that we can read from the field site itself."

For volcano researchers, studying Paektu is a golden opportunity to break new ground because so much about it remains a puzzle.

Oppenheimer said it is not located along any of the tectonic locations that often explain volcanic activity, so just figuring out why it exists at all is one question that needs to be answered. Little or no historical chronicles of the millennium eruption exist, so scientists are also interested in piecing together what exactly happened, what the volcano and the ecosystem around it were like before the eruption and how life returned afterward.

Paektu is considered sacred ground in both China and in North Korea, where it is seen as a symbol of the ruling Kim family and of the revolution that led to the founding of the country, officially known as the Democratic People's Republic of Korea. On the North Korean side, the area around the mountain is dotted with "revolutionary historical sites" and secret camps from which Kim Il Sung, North Korea's first president, is said to have led guerrilla attacks against the Japanese, who held the Korean Peninsula as a colony until their 1945 surrender ended World War II.

Tens of thousands of North Koreans visit the mountain for political indoctrination tours each year during the summer months, when the snows have melted enough for it to be accessible. North Korea is also hoping to develop the volcano, which has a crystal blue crater lake, for foreign tourism.

Fears that the 2,800-meter-tall (9,200-foot-tall) volcano might be unstable began to grow in 2002, when increased seismic activity and ground swelling suggested the magma below the volcano was shifting. That activity subsided in 2006. Though not seen as a serious possibility by most experts, concerns were raised in South Korea and Japan that nuclear tests in the North - conducted at a site which is less than 100 kilometers away - might trigger an eruption.

"That activity sparked a lot of interest both in China and the DPRK, but also in Japan and South Korea and internationally," said Oppenheimer's colleague James Hammond, a seismologist at Imperial College in London. He added that fears of another major eruption soon are probably unfounded. "It's certainly very tranquil at the moment."

Even so, Hammond said the activity prompted the North Korean government to reach out to the international scientific community for help in understanding Paektu's inner workings. Until the 2002 activity, little scientific research on the volcano had been conducted in China or North Korea.

The project got underway in 2011 at the request of a North Korean government agency, the Pyongyang International Information Center on New Technology and Economy. With funding from the Richard Lounsbery Foundation, a philanthropic organization based in Washington, D.C., that supports the sciences, Oppenheimer and Hammond became the first Westerners to visit the North's six field stations on the volcano.

Hammond said that although he was intrigued by the opportunity, the project was a logistical challenge, and not just because of language differences and North Korea's unfamiliarity in dealing with foreign researchers. International sanctions on the North over its nuclear weapons program made it difficult for the scientists to bring in some of the equipment they wanted because of concerns they could have dual use applications that might benefit the North's military.

"If we want to understand what the volcano is like today, we need to park instruments on the ground," Hammond said. "Building the models of what happened previously allows us to address what might happen in the future."

He said that the North Korean side has been cooperative and highly professional. Hammond said that with their first year of data now complete, the scientists are hoping to begin the next stage of studying the data and samples in the laboratory and publishing papers on their findings with their North Korean colleagues early next year.

In September last year, Hammond installed six broadband seismometers to record activity on the volcano, while North Korea's Korean Earthquake Bureau built protective huts for the equipment. He also collected samples of pumice that could provide insight into the scale of the millennium eruption, which is believed to have occurred between 930 and 940 A.D.

Hammond said their next trip is scheduled for next year and he hopes the project will continue beyond that. He also hopes to host North Korean researchers for training and joint research in the U.K.

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