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Carbon dioxide from Earth's mantle may trigger some Italian earthquakes – Finance Brokerage

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Italy may owe some of its seismic activity to carbon dioxide bubbling up from deep underground.

The country’s central Apennine Mountains region has been rattled by several destructive earthquakes in recent years, including the devastating magnitude 6.3 quake that wracked the city of L’Aquila in 2009 (SN: 8/14/09). A new decade-long record of natural carbon dioxide emissions in the area reveals that spikes in CO2 release coincided with the biggest earthquakes. That finding hints that CO2 rising toward Earth’s surface can change pressure along faults to trigger earthquakes, researchers report online August 26 in Science Advances. Understanding the relationship between CO2 and seismicity could someday lead to better earthquake forecasts.

Earth naturally releases carbon dioxide when tectonic forces melt carbonate rock in the mantle, a process that frees CO2 (SN: 10/1/19). That CO2 rises, gathers in pressurized pockets in Earth’s crust and seeps into groundwater that feeds springs aboveground. Previous studies have noted that CO2 tends to escape Earth in seismic hot spots. But without long-term records of CO2 emissions in earthquake-prone areas, no one knew exactly how the timing of carbon emissions compared with earthquake occurrence. 

From 2009 to 2018, researchers measured the carbon content of springwater fed by the Velino aquifer, which is near the epicenter of the 2009 L’Aquila quake and sits atop a reservoir of CO2 in Earth’s crust. Those data show that jumps in CO2 emissions happened at about the same time as strong earthquakes, and emissions dropped off when quakes were smaller and farther between. When the region was struck by quakes of magnitude 6 or higher, the Velino aquifer springs released more than 600 metric tons of CO2 per day. During more seismically quiet periods, the springs emitted some 400 to 500 tons of CO2 daily.

Carbon dioxide from deep within Earth’s mantle can rise up through the crust, seep into groundwater and reach the surface in springwater, such as in the San Vittorino spring (shown) in central Italy.G. Chiodini/INGV

Still, these data do not conclusively show whether rising CO2 helps incite earthquakes, or if the shaking ground simply brings more CO2 to the surface, says Andrea Billi, a geologist at the Italian National Research Council in Rome not involved in the work. “It’s a chicken-and-egg problem.” Continuously monitoring these types of carbon dioxide emissions in the Apennines and other seismically active regions, such as California and Japan, could reveal whether uprising gas is a precursor or product of quakes, he says.

“I think there is feedback between the two,” says study coauthor Giovanni Chiodini, a geologist at the Italian National Institute of Geophysics and Volcanology in Bologna. Continuous buildup of carbon dioxide underground, he says, could drive earthquakes, which fracture Earth’s crust and allow more CO2 to creep upward, which in turn generates more quakes.

If uprising CO2 does aggravate seismic activity in some areas, then tracking the chemistry of local springwater may offer forecasters a new tool to make their predictions, which scientists did not have when the deadly earthquake took L’Aquila by surprise in 2009, Billi says. In the wake of that disaster, six Italian scientists and a government official were convicted of manslaughter for failing to adequately warn the public of seismic risks in the region — although the defendants were later acquitted or got reduced sentences (SN: 1/23/13).

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The body of a Ugandan Olympic athlete who was set on fire by her partner is received by family

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NAIROBI, Kenya (AP) — The body of Ugandan Olympic athlete Rebecca Cheptegei — who died after being set on fire by her partner in Kenya — was received Friday by family and anti-femicide crusaders, ahead of her burial a day later.

Cheptegei’s family met with dozens of activists Friday who had marched to the Moi Teaching and Referral Hospital’s morgue in the western city of Eldoret while chanting anti-femicide slogans.

She is the fourth female athlete to have been killed by her partner in Kenya in yet another case of gender-based violence in recent years.

Viola Cheptoo, the founder of Tirop Angels – an organization that was formed in honor of athlete Agnes Tirop, who was stabbed to death in 2021, said stakeholders need to ensure this is the last death of an athlete due to gender-based violence.

“We are here to say that enough is enough, we are tired of burying our sisters due to GBV,” she said.

It was a somber mood at the morgue as athletes and family members viewed Cheptegei’s body which sustained 80% of burns after she was doused with gasoline by her partner Dickson Ndiema. Ndiema sustained 30% burns on his body and later succumbed.

Ndiema and Cheptegei were said to have quarreled over a piece of land that the athlete bought in Kenya, according to a report filed by the local chief.

Cheptegei competed in the women’s marathon at the Paris Olympics less than a month before the attack. She finished in 44th place.

Cheptegei’s father, Joseph, said that the body will make a brief stop at their home in the Endebess area before proceeding to Bukwo in eastern Uganda for a night vigil and burial on Saturday.

“We are in the final part of giving my daughter the last respect,” a visibly distraught Joseph said.

He told reporters last week that Ndiema was stalking and threatening Cheptegei and the family had informed police.

Kenya’s high rates of violence against women have prompted marches by ordinary citizens in towns and cities this year.

Four in 10 women or an estimated 41% of dating or married Kenyan women have experienced physical or sexual violence perpetrated by their current or most recent partner, according to the Kenya Demographic and Health Survey 2022.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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B.C. sets up a panel on bear deaths, will review conservation officer training

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VICTORIA – The British Columbia government is partnering with a bear welfare group to reduce the number of bears being euthanized in the province.

Nicholas Scapillati, executive director of Grizzly Bear Foundation, said Monday that it comes after months-long discussions with the province on how to protect bears, with the goal to give the animals a “better and second chance at life in the wild.”

Scapillati said what’s exciting about the project is that the government is open to working with outside experts and the public.

“So, they’ll be working through Indigenous knowledge and scientific understanding, bringing in the latest techniques and training expertise from leading experts,” he said in an interview.

B.C. government data show conservation officers destroyed 603 black bears and 23 grizzly bears in 2023, while 154 black bears were killed by officers in the first six months of this year.

Scapillati said the group will publish a report with recommendations by next spring, while an independent oversight committee will be set up to review all bear encounters with conservation officers to provide advice to the government.

Environment Minister George Heyman said in a statement that they are looking for new ways to ensure conservation officers “have the trust of the communities they serve,” and the panel will make recommendations to enhance officer training and improve policies.

Lesley Fox, with the wildlife protection group The Fur-Bearers, said they’ve been calling for such a committee for decades.

“This move demonstrates the government is listening,” said Fox. “I suspect, because of the impending election, their listening skills are potentially a little sharper than they normally are.”

Fox said the partnership came from “a place of long frustration” as provincial conservation officers kill more than 500 black bears every year on average, and the public is “no longer tolerating this kind of approach.”

“I think that the conservation officer service and the B.C. government are aware they need to change, and certainly the public has been asking for it,” said Fox.

Fox said there’s a lot of optimism about the new partnership, but, as with any government, there will likely be a lot of red tape to get through.

“I think speed is going to be important, whether or not the committee has the ability to make change and make change relatively quickly without having to study an issue to death, ” said Fox.

This report by The Canadian Press was first published Sept. 9, 2024.

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