Tag Archives: Scientists

Scientists defy ‘force of nature’ to unlock secrets of Hawaii volcano

A USGS geologist making observations of the fissure 8 lava channel at sunset is pictured in this July 3, 2018 fisheye lens handout photograph near the Kilauea volcano eruption in Hawaii, U.S. USGS/Handout via REUTERS

By Terray Sylvester and Jolyn Rosa

PAHOA, Hawaii (Reuters) – Dressed in heavy cotton, a helmet and respirator, Jessica Ball worked the night shift monitoring “fissure 8,” which has been spewing fountains of lava as high as a 15-story building from a slope on Hawaii’s Kilauea volcano.

The lava poured into a channel oozing toward the Pacific Ocean several miles away. In the eerie orange nightscape in the abandoned community of Leilani Estates, it looked like it was flowing toward the scientist, but that was an optical illusion, Ball said.

Kelly Wooten, a geologist and volcanologist at Hawaiian Volcano Observatory (HVO) is downloading radiometer data on rim of Halema‘uma‘u Crater in Kilauea Volcano, Hawaii, U.S., December 19, 2008. Picture taken on December 19, 2008. Courtesy USGS/Handout via REUTERS

Kelly Wooten, a geologist and volcanologist at Hawaiian Volcano Observatory (HVO) is downloading radiometer data on rim of Halema‘uma‘u Crater in Kilauea Volcano, Hawaii, U.S., December 19, 2008. Picture taken on December 19, 2008. Courtesy USGS/Handout via REUTERS

“The volcano is doing what it wants to. … We’re reminded what it’s like to deal with the force of nature,” said Ball, a geologist with the U.S. Geological Survey.

Scientists have been in the field measuring the eruptions 24 hours a day, seven days a week since Kilauea first exploded more than two months ago. They are a mix of USGS staff, University of Hawaii researchers and trained volunteers working six-to-eight-hour shifts in teams of two to five.

They avoid synthetics because they melt in the intense heat and wear gloves to protect their hands from sharp volcanic rock and glass. Helmets protect against falling lava stones, and respirators ward off sulfur gases.

This is not a job for the faint hearted. Geologists have died studying active volcanoes. David Alexander Johnston, a USGS volcanologist was killed by the 1980 eruption of Mount St. Helens in Washington state. In 1991, American volcanologist Harry Glicken and his French colleagues Katia and Maurice Krafft were killed while conducting avalanche research on Mount Unzen in Japan.

Ball, a graduate of the State University of New York at Buffalo, located in upstate New York near the Canadian border, compared Kilauea’s eruptions to Niagara Falls.

“It gives you the same feeling of power and force,” she said.

A geologist is collecting sample of molten lava from 2011 Kamoamoa eruption, at Kilauea Volcano, Hawaii, U.S., March 6, 2011. Picture taken on March 6, 2011. Courtesy USGS/Handout via REUTERS

A geologist is collecting sample of molten lava from 2011 Kamoamoa eruption, at Kilauea Volcano, Hawaii, U.S., March 6, 2011. Picture taken on March 6, 2011. Courtesy USGS/Handout via REUTERS

WORTH THE RISKS

Kilauea, which has been erupting almost continuously since 1983, is one of the world’s most closely monitored volcanoes, largely from the now-abandoned Hawaiian Volcano Observatory at the summit. But the latest eruption is one of Kilauea’s biggest and could prove to be a bonanza for scientists.

Ball and the USGS teams are studying how the magma – molten rock from the earth’s crust – tracks through a network of tubes under the volcano in what is known as the “Lower East Rift Zone,” before ripping open ground fissures and spouting fountains of lava.

They are trying to discover what warning signs may exist for future eruptions to better protect the Big Island’s communities, she said.

Fissure 8 is one of 22 around Kilauea that have destroyed over 1,000 structures and forced 2,000 people to evacuate. They are what make this volcanic eruption a rare event, Ball said.

“They’re common for Kilauea on a geologic time scale, but in a human time scale it’s sort of a career event,” she said.

Meanwhile, the summit is erupting almost every day with steam or ash, said Janet Snyder, spokeswoman for the County of Hawaii, where Kilauea is located.

Scientists had thought the steam explosions resulted from lava at the summit dropping down the volcano’s throat into groundwater. This was based on Kilauea’s 1924 eruption, to which the current one is most often compared.

But the explosions this time have released lots of sulfur dioxide gas, which means magma is involved, said Michael Poland, scientist-in-charge at Yellowstone Volcano Observatory, one of many volcanologists seconded to Kilauea.

“So we have already made a conceptual leap, leading us to believe it was different from what we had understood,” he said.

Poland and other scientists pulled equipment and archives out of the abandoned observatory at the volcano summit after hundreds of small eruption-induced quakes damaged the structure, and have decamped to the University of Hawaii in Hilo on the Big Island.

The archives included photos, seismic records and samples, some 100 or more years old, Poland said. “These materials are invaluable to someone who says, ‘I have this new idea, and I want to test it using past data.'”Now the second longest Kilauea eruption on record, surpassed only by one in 1955, this eruption offers far better research opportunities than previous events, Ball said.

“We’ve got much better instruments and we’ve got longer to collect the data,” she said.

(Reporting by Terray Sylvester and Jolyn Rosa; writing by Bill Tarrant; Editing by Leslie Adler)

Developing nations to study ways to dim sunshine, slow warming

FILE PHOTO: Smoke from the Wallow Wildfire billows over the White Mountains as the sun sets in Springerville, Arizona, U.S., June 8, 2011. REUTERS/Joshua Lott/File Photo

By Alister Doyle

OSLO (Reuters) – Scientists in developing nations plan to step up research into dimming sunshine to curb climate change, hoping to judge if a man-made chemical sunshade would be less risky than a harmful rise in global temperatures.

Research into “solar geo-engineering”, which would mimic big volcanic eruptions that can cool the Earth by masking the sun with a veil of ash, is now dominated by rich nations and universities such as Harvard and Oxford.

Twelve scholars, from countries including Bangladesh, Brazil, China, Ethiopia, India, Jamaica and Thailand, wrote in the journal Nature on Wednesday that the poor were most vulnerable to global warming and should be more involved.

“Developing countries must lead on solar geo-engineering research,” they wrote in a commentary.

“The overall idea (of solar geo-engineering) is pretty crazy but it is gradually taking root in the world of research,” lead author Atiq Rahman, head of the Bangladesh Centre for Advanced Studies, told Reuters by telephone.

The solar geo-engineering studies may be helped by a new $400,000 research project, the Solar Radiation Management Governance Initiative (SRMGI), which is issuing a first call for scientists to apply for finance this week.

The SRMGI is financed by the Open Philanthropy Project, a foundation backed by Dustin Moskovitz, a co-founder of Facebook, and his wife, Cari Tuna, the scientists wrote.

The fund could help scientists in developing nations study regional impacts of solar geo-engineering such as on droughts, floods or monsoons, said Andy Parker, a co-author and project director of the SRMGI.

Rahman said the academics were not taking sides about whether geo-engineering would work. Among proposed ideas, planes might spray clouds of reflective sulfur particles high in the Earth’s atmosphere.

“The technique is controversial, and rightly so. It is too early to know what its effects would be: it could be very helpful or very harmful,” they wrote.

A U.N. panel of climate experts, in a leaked draft of a report about global warming due for publication in October, is skeptical about solar geo-engineering, saying it may be “economically, socially and institutionally infeasible.”

Among risks, the draft obtained by Reuters says it might disrupt weather patterns, could be hard to stop once started, and might discourage countries from making a promised switch from fossil fuels to cleaner energies.

Still, Rahman said most developed nations had “abysmally failed” so far in their pledges to cut greenhouse gas emissions, making radical options to limit warming more attractive.

The world is set for a warming of three degrees Celsius (5.7 Fahrenheit) or more above pre-industrial times, he said, far above a goal of keeping a rise in temperatures “well below” 2C (3.6F) under the 2015 Paris Agreement among almost 200 nations.

(Reporting By Alister Doyle; Editing by Richard Balmforth)

In first, scientists detect gravitational waves and light from star collision

An artist’s illustration of two merging neutron stars. The rippling space-time grid represents gravitational waves that travel out from the collision, while the narrow beams show the bursts of gamma rays that are shot out just seconds after the gravitational waves.

By Scott Malone

CAMBRIDGE, Mass. (Reuters) – Scientists in the United States and Europe have for the first time detected gravitational waves, the ripples in space and time predicted by Albert Einstein, at the same time as light from the same cosmic event, according to research published on Monday.

The waves, caused by the collision of two neutron stars some 130 million years ago, were first detected in August in the Laser Interferometer Gravitational-Wave Observatories, known as LIGO, in Washington state and Louisiana as well as at a third detector, named Virgo in Italy.

Two seconds later, observatories on earth and in space detected a burst of light in the form of gamma rays from the same path of the southern sky, which analysis showed likely to be from the same source.

Less than two years have passed since scientists working at the Massachusetts Institute of Technology and the California Institute of Technology first detected gravitational waves coming off two black holes.

The gravitational waves had been predicted by Einstein in 1916, as an outgrowth of his groundbreaking general theory of relativity, which depicted gravity as a distortion of space and time triggered by the presence of matter.

Three U.S. scientists who made that discovery were awarded the Nobel prize in physics earlier this month.

The findings published on Monday help confirm Einstein’s theory, said the researchers, whose work was published in Physical Review Letters.

“From informing detailed models of the inner workings of neutron stars and the emissions they produce, to more fundamental physics such as general relativity, this event is just so rich,” said MIT senior research scientist David Shoemaker. “It is a gift that will keep on giving.”

The LIGO instruments work in unison and use lasers to detect remarkably small vibrations from gravitational waves as they pass through the earth.

Previously, scientists could only study space by observing electromagnetic waves such as radio waves, visible light, infrared light, X-rays and gamma rays. Those waves encounter interference as they travel across the universe, but gravitational waves do not, meaning they offer a wealth of additional information.

The colliding neutron stars were smaller than the black holes that LIGO previously detected.

Black holes are so dense that not even photons of light can escape their gravity. Neutron stars are relatively small, about the size of a city, the compact remains of a larger star that died.

The National Science Foundation, an independent agency of the U.S. government, provided about $1.1 billion in funding for the LIGO research over 40 years.

 

(Reporting by Scott Malone; Editing by Peter Cooney)

 

U.S. government scientists go ‘rogue’ in defiance of Trump

national park in south dakota

By Steve Gorman

(Reuters) – Employees from more than a dozen U.S. government agencies have established a network of unofficial “rogue” Twitter feeds in defiance of what they see as attempts by President Donald Trump to muzzle federal climate change research and other science.

Seizing on Trump’s favorite mode of discourse, scientists at the Environmental Protection Agency, NASA and other bureaus have privately launched Twitter accounts – borrowing names and logos of their agencies – to protest restrictions they view as censorship and provide unfettered platforms for information the new administration has curtailed.

“Can’t wait for President Trump to call us FAKE NEWS,” one anonymous National Park Service employee posted on the newly opened Twitter account @AltNatParkService. “You can take our official twitter, but you’ll never take our free time!”

The @RogueNASA account displayed an introductory disclaimer describing it as “The unofficial ‘Resistance’ team of NASA. Not an official NASA account.” It beckoned readers to follow its feed “for science and climate news and facts. REAL NEWS, REAL FACTS.”

The swift proliferation of such tweets by government rank-and-file followed internal directives several agencies involved in environmental issues have received since Trump’s inauguration requiring them to curb their dissemination of information to the public.

Last week, Interior Department staff were told to stop posting on Twitter after an employee re-tweeted posts about relatively low attendance at Trump’s swearing-in, and about how material on climate change and civil rights had disappeared from the official White House website.

Employees at the EPA and the departments of Interior, Agriculture and Health and Human Services have since confirmed seeing notices from the new administration either instructing them to remove web pages or limit how they communicate to the public, including through social media.

The restrictions have reinforced concerns that Trump, a climate change skeptic, is out to squelch federally backed research showing that emissions from fossil fuel combustion and other human activities are contributing to global warming.

The resistance movement gained steam on Tuesday when a series of climate change-related tweets were posted to the official Twitter account of Badlands National Park in South Dakota, administered under the Interior Department, but were soon deleted.

A Park Service official later said those tweets came from a former employee no longer authorized to use the official account and that the agency was being encouraged to use Twitter to post public safety and park information only, and to avoid national policy issues.

Within hours, unofficial “resistance” or “rogue” Twitter accounts began sprouting up, emblazoned with the government logos of the agencies where they worked, the list growing to at least 14 such sites by Wednesday afternoon.

An account dubbed @ungaggedEPA invited followers to visit its feeds of “ungagged news, links, tips and conversation that the U.S. Environmental Protection Agency is unable to tell you,” adding that it was “Not directly affiliated with @EPA.”

U.S. environmental employees were soon joined by similar “alternative” Twitter accounts originating from various science and health agencies, including the Food and Drug Administration, the National Institutes of Health, the Centers for Disease Control and Prevention and the National Weather Service. Many of their messages carried Twitter hashtags #resist or #resistance.

An unofficial Badlands National Park account called @BadHombreNPS also emerged (a reference to one of Trump’s more memorable campaign remarks about Mexican immigrants) to post material that had been scrubbed from the official site earlier.

Because the Twitter feeds were set up and posted to anonymously as private accounts, they are beyond the control of the government.

(By Steve Gorman in Los Angeles; Editing by Lisa Shumaker)