Himalayan Megaquakes Powered By Elastic Energy In Tibetan Plateau

first_imgShare Share via TwitterShare via FacebookShare via LinkedInShare via E-mail Computer simulations indicate that Himalayan mega-earthquakes must occur every 1,000 years or so to empty a reservoir of energy in southern Tibet not released by smaller earthquakes, according to a paper that will appear in the Nov. 9 issue of the journal Nature. Colorado researchers Roger Bilham and Nicole Feldl co-authored the paper “Great Himalayan Earthquakes and the Tibetan Plateau.” Their research was funded by the National Science Foundation. Bilham is a University of Colorado at Boulder geology professor and associate director of the Cooperative Institute for Research in Environmental Sciences or CIRES. Feldl is a research scientist at UNAVCO, a national Global Positioning System consortium founded by CU-Boulder and funded by the National Science Foundation. In their report, the researchers reveal that earthquakes in the past 200 years in the central Himalaya, though catastrophic, have released relatively modest amounts of the energy of India’s collision with the Tibetan plateau compared to three massive earthquakes that occurred in medieval times. They base their claims on GPS point motions across the Himalaya that indicate where strain energy is stored. The researchers ran computer simulations on how the energy was released, which yielded clues on the approximate recurrence intervals of past Himalayan earthquakes. In the past, experts resorted to estimating the timing of future earthquakes from the slip that occurred in former ones. However, the new information should help scientists forecast future seismic activity in the region, Bilham said. “We had always assumed that earthquakes in the region were driven by the release of energy accumulating near the Greater Himalaya,” he said. “Our recent calculations suggest that a substantial volume of the southern Tibetan plateau plays a significant role in driving great ruptures. Exhumation of ancient archives and surface ruptures are now needed to show the details of this process in the past 2,000 years to help us forecast future earthquakes – and save lives.” The Greater Himalaya forms a 2,000-kilometer arc separating northern India from Tibet and boasts the world’s highest peaks, including the loftiest of all, Mount Everest, at more than 29,000 feet. The region is highly prone to earthquakes and has produced some of the deadliest on earth. Last year, 74,000 people died in the Kashmir region during a relatively modest earthquake, 7.6 magnitude. Computer simulations based on GPS data in the region reveal that the Tibetan plateau contains an invisible reservoir of “elastic strain energy” that is partly depleted each time an earthquake hits the region. The researchers contend that only gigantic earthquakes could fully deplete this reservoir of strain. Their models also show what they call “two puzzling features of plate boundary seismicity.” “Our findings show that great earthquakes – those with a magnitude of 8.2 or greater – can re-rupture regions that already have ruptured in recent smaller earthquakes, or those with a magnitude of 7.8 or below,” Bilham said. Mega earthquakes, those with a magnitude of 8.4 or greater, apparently occur every 1,000 years and are driven by residual strain following centuries of smaller earthquakes, or those with a magnitude of 7.6 or lower, according to the Nature report. The CU-Boulder researchers said conditions exist in the Himalaya today that could drive four or more earthquakes measuring more than 8.0 on the Richter scale. However, they added, these earthquakes would be even deadlier if they were delayed for another 500 years and occurred as mega-quakes exceeding 8.4 magnitude on the Richter scale. Published: Nov. 5, 2006 last_img read more

Toyota increases USA Paratriathlon National Championships prize purse by one-third

first_img Related USA Triathlon has announced that Toyota, title sponsor of the 2019 Toyota USA Paratriathlon National Championships, will contribute to the event’s professional prize purse unveiled last month. Toyota will match the US$12,250 each provided by USA Triathlon and the Challenged Athletes Foundation (CAF), bringing the total prize purse to US$36,750.The National Championships will be held on July 20 in Long Beach, California, in conjunction with the inaugural Legacy Triathlon. The course is centred at Alamitos Beach, the proposed site of the triathlon competitions for the Los Angeles 2028 Olympic and Paralympic Games.The prize purse is the first in USA Paratriathlon National Championships history. Winnings will be awarded to podium finishers in each of six paratriathlon sport classes, and guides for athletes with visual impairments will also receive equivalent winnings.“As a company committed to inclusivity through mobility, there was no question these athletes should be offered a prize purse at the Toyota USA Paratriathlon National Championships,” said Dedra DeLilli, Group Manager, Olympic and Paralympic Marketing, Toyota Motor North America. “These athletes have overcome incredible challenges throughout their careers; and as a partner of USA Triathlon, Toyota wants to ensure that they are recognized for their achievements.“We look forward to supporting the upcoming Toyota USA Paratriathlon National Championships and cheering on all of the participants as they compete for a national title.”Chuck Menke, USA Triathlon Chief Marketing Officer added, “USA Triathlon is proud to have a partner in Toyota that truly demonstrates its commitment to the professionalization of our elite paratriathletes. This is an extension of the invaluable support Toyota already provides to the US Paratriathlon National Team program, enabling us to further raise the profile of our US athletes in the lead-up to the Tokyo 2020 Paralympic Games.“We are grateful for the generosity of both Toyota and CAF to make this historic prize purse a reality.”National champions will now receive US$1,500 each, runners-up will receive US$750, and third-place finishers will receive US$375. Prize purse recipients must hold a current paratriathlete or elite paratriathlete USA Triathlon membership valid through July 20. In addition, they must be either a US citizen or US National able to represent the United States at International Triathlon Union (ITU) competitions immediately.Toyota became the Exclusive Mobility & Automotive Partner of USA Triathlon in January. The company is directly supporting USA Triathlon’s top elite athletes leading into the Tokyo 2020 Olympic and Paralympic Games.In addition to sponsoring Paratriathlon Nationals, Toyota is also the title partner of the US Paratriathlon National Team; US Paratriathlon Development Team; US Paratriathlon Resident Team based at the US Olympic Training Center in Colorado Springs; and the 2019 and 2020 Toyota USA Triathlon Age Group National Championships.www.toyota.comwww.usatriathlon.orgwww.usaparatriathlon.orglast_img read more

Hundreds stung by jellyfish over Memorial Day weekend

first_imgBy ESTEVAN MEDRANOPort Isabel-South Padre [email protected] 475 people were strung by jellyfish and Portuguese man o’wars — also called bluebottles — over Memorial Day weekend, officials said. The number represents a staggering increase from about 275 stings reported the previous week. Many of the stings were treated by the Cameron County Beach Patrol. An ocean current is blamed for the increase in stings which drew the jellyfish towards the shore.The stings, while painful, are rarely life-threatening. Officials offered a bit of advice if a swimmer is able to identify the transparent culprit. Applying heat is recommended for man o’ war stings while rinsing with saltwater or applying a paste made of baking soda and vinegar is recommended for jellyfish stings.When by the water, watch out for blue and purple flags planted by the Beach Patrol to warn swimmers about the jellyfish in the area.Want the whole story? Pick up a copy of the Port Isabel-South Padre Press, or subscribe to our E-Edition by clicking here. Share RelatedRio History: Invasion of the Giant JellyfishBy STEVE HATHCOCK Special to the PRESS A couple of years back, I wrote about a massive influx of Portuguese Man of Wars that washed onto the beaches of South Padre island in 2012. In that article, I explained to my readers that under normal conditions, colonies of Man-o-Wars travel with…February 17, 2017In “News”A Message to Spring Breakers from the Mayor of South Padre IslandWelcome to South Padre Island for Spring Break 2012! On behalf of the City Council, I would like to welcome you to the beautiful community of South Padre Island. As you know, we have many opportunities for you to enjoy yourself during your visit and I would like to provide…March 1, 2012In “Opinion & Advice”Princess of the Surf: Aarin HartwellBy RAY QUIROGA South Padre Parade To dub Aarin Hartwell merely as a “surfer girl” would be doing her a great disservice; she’s so much more. Part scholar, part activist, part athlete, part spiritualist, Hartwell is a renaissance woman in her own right. In fact, her impressive resume includes working…December 16, 2011In “South Padre Parade”last_img read more

Vikings draft LSU wide receiver Justin Jefferson at No. 22

first_imgLast Updated: 24th April, 2020 11:03 IST Vikings Draft LSU Wide Receiver Justin Jefferson At No. 22 The Minnesota Vikings chose LSU wide receiver Justin Jefferson with the 22nd pick in the first round of the NFL draft, with another selection in the queue on Thursday night waiting at No. 25. Written By FOLLOW US First Published: 24th April, 2020 11:03 IST WATCH US LIVE The Minnesota Vikings chose LSU wide receiver Justin Jefferson with the 22nd pick in the first round of the NFL draft, with another selection in the queue on Thursday night waiting at No. 25.The 22nd pick came from Buffalo as part of theJefferson, a late bloomer who played primarily in the slot while helping Tigers quarterback Joe Burrow win the Heisman Trophy for the national champions, set the program record with 111 receptions as a junior in 2019. Jefferson will join Adam Thielen and Tajae Sharpe as the top down-field options for quarterback Kirk Cousins.The last time the Vikings made multiple picks in the first round was 2014, their first draft under coach Mike Zimmer when linebacker Anthony Barr was selected ninth and quarterback Teddy Bridgewater was taken at No. 32.This is the 10th draft for general manager Rick Spielman with full authority over the roster, his 14th overall with Minnesota. This will be a pivotal draft for Zimmer and Spielman, both of whom have entered the final year of their contract and yet to receive an extension. The Vikings have made the playoffs three of the last five seasons, but the 2017 team that reached the NFC championship game has so far been the pinnacle.The virus outbreak that shuttered all NFL facilities forced team officials to sequester in their homes for thiscenter_img SUBSCRIBE TO US Associated Press Television News LIVE TV COMMENTlast_img read more

Oprah Winfrey on her battle with depression: “I was behind a veil”

first_imgVogue/Annie Leibovitz(LOS ANGELES) — It’s hard to imagine that a woman like Oprah Winfrey has ever had a “down” moment, but the TV titan reveals that even she has battled depression.She said she first experienced depression after her film adaptation of Toni Morrison’s Beloved hit theaters in 1998.  “I got a call from someone at the studio, and they said, ‘It’s over. You got beat by ‘Chucky,’” she tells Vogue in a new interview.“And I said, ‘Who’s “Chucky?’ What do you mean it’s over? It’s just Saturday morning!’” she recalled. “…[A]nd so began my long plunge into food and depression and suppressing all my feelings.”Winfrey, 63, said her depression lasted for six weeks.“I actually started to think, ‘maybe I really am depressed.’ Because it’s more than ‘I feel bad about this.’ I felt like I was behind a veil. I felt like what many people had described over the years on my show, and I could never imagine it.”“That’s when the gratitude practice became really strong for me, because it’s hard to remain sad if you’re focused on what you have instead of what you don’t have,” she explained.“It taught me to never again…put all of your hopes, expectations, eggs in the basket of box office,” Winfrey said. “Do the work as an offering, and then whatever happens, happens.”Winfrey will be seen in theaters next year as Mrs. Which in the adaptation of the beloved book A Wrinkle in Time.Copyright © 2017, ABC Radio. All rights reserved.Powered by WPeMatico Relatedlast_img read more