first_imgBecause of the lack of a definitive air link to an international gravity base station, the Antarctic Peninsula gravity network was originally, and still is, tied to the Potsdam gravity system via long ship links to South America (Renner 1981, Kennett 1965). An indirect link from the British Antarctic Survey (BAS) scientific station at Rothera to an International Gravity Standardisation Net 1971 (IGSN 71) base station in the UK had previously been made via a link to the BAS gravity station on the Falkland Islands in Port Stanley (McGibbon 1988). Whilst the apparent gravity difference between Port Stanley and the base station in the UK had been calculated via a two-way air tie using a LaCoste and Romberg meter (McGibbon 1988) and later strengthened with three two-way air ties using four LaCoste and Romberg meters (Bassett 1987), the link between Port Stanley and Rothera was based on a one-way tie that included a lengthy ship borne passage (McGibbon 1988). The weakness of this link insured that the adopted gravity value at Rothera continued to be based on the ship ties made by Griffiths et al. (1964) and Kennett (1965). This note describes the strengthening of the gravity link between Rothera and Port Stanley and the subsequent reassignment of the adopted gravity value at Rothera Station.last_img read more

first_imgIn January and February 2000, a collaborative survey designed to assess the biomass of Antarctic krill across the Scotia Sea was conducted aboard research vessels from Japan, Russia, the UK and the USA using active acoustic and net sampling. Survey design, sampling protocols, and data analysis procedures are described. Mean krill density across the survey area was estimated to be 21.4 gm(-2), and total biomass was estimated to be 44.3 million tonnes (CV 11.4%). This biomass estimate leads to a revised estimate of precautionary yield for krill in the Scotia Sea of 4 million tonnes. However, before the fishery can be permitted to expand to this level, it will be necessary to establish mechanisms to avoid concentration of fishing effort, particularly near colonies of land-breeding krill predators, and to consider the effects of krill immigrating into the region from multiple sources.last_img read more

first_imgGround-based surveys of ice-divide triple junctions in two Antarctic ice rises, the Fletcher Promontory and Berkner Island, have been carried out using low-frequency ice-penetrating radars. These surveys have focused on understanding the internal layer architecture at and around the triple junctions, with a particular emphasis on understanding how the Raymond effect operates. A variety of features have been observed, including Raymond cupolas under the junctions, bump stacks of varying amplitude with distance from the divide, double bumps, crooked stacks implying divide motion, and the presence of ridges containing weak and strong bump stacks. It was generally not possible to elucidate the three-dimensional structure by correlation of pick crossovers, so instead a least squares cross-correlation technique was used which computes nominal age surfaces using radial basis function interpolation. Double bumps are absent from the central cupola of Fletcher Promontory, permitting us to infer that the ice here has thinned by around 500 m in the past 5000 years. Estimates of the age scale suggest that there will be recoverable Eemian ice. A technique for inferring the velocity profile at divides using layer traces and assumed velocities in the flanks is presented.last_img read more

first_imgThe case put by Alexei Smirnov in 2012 is accepted and the order name Synaptida Cuénot is adopted in place of ApodidaBrandt. Two new Synaptida species are described for the Weddell Sea in Antarctica with single author O’Loughlin: Sigmodota magdarogera sp. nov. and Taeniogyrus bamberi sp. nov.. A specimen of Sigmodota magnibacula (Massin & Hétérier) is described. A key is provided for the genera and species of Taeniogyrinae that occur south of the Antarctic Convergence.last_img

first_imgDuring austral summer 2015, the Microphysics of Antarctic Clouds (MAC) field campaign collected unique and detailed airborne and ground-based in situ measurements of cloud and aerosol properties over coastal Antarctica and the Weddell Sea. This paper presents the first results from the experiment and discusses the key processes important in this region, which is critical to predicting future climate change. The sampling was predominantly of stratus clouds, at temperatures between −20 and 0 °C. These clouds were dominated by supercooled liquid water droplets, which had a median concentration of 113 cm−3 and an interquartile range of 86 cm−3. Both cloud liquid water content and effective radius increased closer to cloud top. The cloud droplet effective radius increased from 4 ± 2 µm near cloud base to 8 ± 3 µm near cloud top. Cloud ice particle concentrations were highly variable with the ice tending to occur in small, isolated patches. Below approximately 1000 m, glaciated cloud regions were more common at higher temperatures; however, the clouds were still predominantly liquid throughout. When ice was present at temperatures higher than −10 °C, secondary ice production most likely through the Hallett–Mossop mechanism led to ice concentrations 1 to 3 orders of magnitude higher than the number predicted by commonly used primary ice nucleation parameterisations. The drivers of the ice crystal variability are investigated. No clear dependence on the droplet size distribution was found. The source of first ice in the clouds remains uncertain but may include contributions from biogenic particles, blowing snow or other surface ice production mechanisms. The concentration of large aerosols (diameters 0.5 to 1.6 µm) decreased with altitude and were depleted in air masses that originated over the Antarctic continent compared to those more heavily influenced by the Southern Ocean and sea ice regions. The dominant aerosol in the region was hygroscopic in nature, with the hygroscopicity parameter κ having a median value for the campaign of 0.66 (interquartile range of 0.38). This is consistent with other remote marine locations that are dominated by sea salt/sulfate.last_img read more

first_imgOctober 2, 2018 /Sports News – Local Nicklaus Britt Places 12th at WNMU Fall Intercollegiate Tags: Dixie State/Nicklaus Britt/WNMU Invitational Written by FacebookTwitterLinkedInEmailALBUQUERQUE, N.M.-Tuesday, Dixie State men’s golf star, Nicklaus Britt, a former Millard High standout, finished 12th at the WNMU Fall Intercollegiate, shooting a +6.His contributions helped the Trailblazers finish third overall at +34, posting a score of 898.Host Western New Mexico finished first overall and the Mustangs’ star golfer also placed first as Sam Ruston finished with a score of 212 (-4).Britt and his teammates are next in action at the Dixie State Fall Regional Preview October 15 and 16. Brad Jameslast_img read more

first_img Brad James November 15, 2018 /Sports News – Local SUU Football Ends Season At Cal Poly Tags: Austin Minefee/Cal Poly Mustangs/Canyon View High/Chinedu Ahanonu/J.J. Koski/Jay Green Jr./Joe Protheroe/Judd Cockett/Khaleel Jenkins/Landen Measom/Nik Navarro/Quentin Harrison/SUU Football/Taelin Webb Written by FacebookTwitterLinkedInEmailSAN LUIS OBISPO, Calif.-Saturday, Southern Utah football concludes its season with a road tilt at San Luis Obispo, Calif. against the Cal Poly Mustangs.In what has been a rebuilding season, the Thunderbirds are currently 1-9, including 1-6 in Big Sky Conference play.One of the bright spots for the Thunderbirds has been receiver Judd Cockett as the freshman out of Honolulu has returned two kickoffs for touchdowns this season.Cockett is the first Thunderbird since 2011 to return two kickoffs for scores, when former Canyon View High star Austin Minefee did so.SUU’s brightest star on the season has been tailback Jay Green Jr. who has run for 815 yards and six scores.Amid a quarterbacks’ carousel for the Thunderbirds, the leading receiver is Landen Measom, who has hauled in 43 grabs for 589 yards and two touchdowns.Linebacker Chinedu Ahanonu has 86 tackles and 11 tackles for a loss on the season and cornerback Taelin Webb has a team-best nine pass breakups.The Mustangs come into this tilt at 4-6 and 3-4 in conference play.Cal Poly’s star offensive player this season has been tailback Joe Protheroe, who leads the nation with 1,627 rushing yards. His 162.7 rushing yards per game also lead the nation.He compensates for a below-average passing offense led by quarterback Khaleel Jenkins (48.7 completion percentage, 581 yards, 4 TD’s/0 INT’s).The Mustangs have some effective receivers in J.J. Koski (29 rec, 557 yards, 2 TD’s, 19.2 yards per catch) and Quentin Harrison (4 rec, 91 yards, TD).Junior linebacker Nik Navarro is the defensive leader with 3 sacks on the season.The Mustangs lead the Thunderbirds all-time 19-9 in a series dating back to 1986.last_img read more

first_imgJanuary 4, 2019 /Sports News – National Reliever David Robertson signs two-year deal with Phillies Beau Lund Written by FacebookTwitterLinkedInEmailScott Clarke / ESPN Images(PHILADELPHIA) — Free agent reliever David Robertson is heading to Philadelphia.The Philadelphia Phillies announced on Thursday that the 33-year-old right-hander has agreed to a two-year contract with the team. The deal also includes a third-year club option. Welcome to the phamily, Robertsons!— Philadelphia Phillies (@Phillies) January 3, 2019A source tells ESPN Robertson will earn $10 million this upcoming season and $11 million in 2020. The third-year club option in 2021 will be for $12 million and includes a $2 million buyout.Last season with the New York Yankees, Robertson pitched in 69 games and went 8-3 with a 3.23 ERA. He had a total of five saves and 91 strikeouts.Robertson opted for free agency at the end of the season.Copyright © 2019, ABC Radio. All rights reserved.last_img read more

first_img Tags: MLS Is Back Tournament/Real Salt Lake/Sporting KC FacebookTwitterLinkedInEmailLAKE BUENA VISTA, Fla. (AP) — Johnny Russell scored in the first minute, Gerso Fernandes added an insurance goal in the closing minutes and Sporting Kansas City secured its spot in the knockout round of the MLS is Back tournament with a 2-0 victory over Real Salt Lake.Kansas City finished with six points after two wins in the group stage to secure a spot in the round of 16.Russell’s goal was the fifth scored in the first minute in team history and the first since 2013.Real Salt Lake will also advance to the round of 16 as one of the top four third-place finishers in the group stage. Associated Press July 22, 2020 /Coronavirus (COVID-19) related news and sports stories, Sports News – Local Sporting KC scores early, advances with 2-0 win over RSL Written bylast_img read more

first_img FacebookTwitterLinkedInEmailChange the RefBy KATIE KINDELAN, ABC News (NEW YORK) — Amid the smiling fans seen as cardboard cutouts supporting their favorite baseball team during a crowdless season due to the coronavirus pandemic, one stands out.The face of Joaquin Oliver, a 17-year-old victim of the 2018 shooting at Marjory Stoneman Douglas High School in Parkland, Florida, that killed 17 students and staff members, has been seen in the crowd at 14 different ballparks this season — from Oracle Park in San Francisco to Citi Field in New York.The cutouts of Joaquin were placed in baseball stadiums by Change the Ref, the nonprofit organization formed by his parents, Manuel and Patricia Oliver, to raise awareness about mass shootings and bring an end to gun violence.The MLB initiative is called “83 Strikes and No Outs” because, according to Change the Ref, there have been “83 additional school shootings and zero changes to federal gun laws,” since a teen gunman walked into Marjory Stoneman Douglas High School on Feb. 14, 2018, and killed Joaquin and 16 of his fellow students, teachers and coaches.“It’s very sad, but I guess that’s the point,” Manuel Oliver told ABC News’ Good Morning America of seeing his late son’s image amid cheering fans in baseball stadiums.“I need to let everybody know that this random tragedy that hit our family, it could hit you tomorrow,” he said. “I need to go beyond sadness and be strong enough, because I have to, and have this story told that explains how this kid isn’t able to be there anymore watching the games that he loved so much unless he’s printed on a cardboard.”Seeing Joaquin’s face in baseball stadiums across the country is particularly poignant for Oliver, who always supported his son’s passion for baseball despite not playing or following the game himself.Two years before Joaquin’s death, he and Oliver had started an annual tradition of flying to a city, renting a car and then driving to all the nearby baseball stadiums.“You have to fall in love, or at least support, the passion of your kids,” said Oliver, an artist who has also painted murals across the country featuring Joaquin. “Imagine if I hadn’t done that [with Joaquin and baseball]. How would I feel today?”“Every minute that I spent with Joaquin, on the baseball field, in the baseball park, in trainings, it’s one of the most valuable treasures that I hold today,’ he said.Oliver said he hopes the sight of Joaquin in the crowds inspires people to take action and join the fight against gun violence, whether it’s by voting, educating themselves, joining Change the Ref or even getting to know kids in their community who may be in need of help.“I didn’t see a message like this one before Feb. 14,” he said. “Maybe if someone had the brave attitude of doing something like this before Parkland, maybe I would have been one of the lucky ones to see that, and maybe I would have done something before Joaquin was murdered. [I would have been] part of the solution.”More than two dozen school shootings happened in the U.S. in 2019 alone, according to an ABC News analysis of incidents at K-12 schools. And school shootings represent just a tiny fraction of the firearm crimes in the U.S., with more than 185,000 aggravated assaults with a firearm in 2018 alone, according to FBI data.Oliver said he is hopeful that things will change when it comes to gun violence and gun reform in the U.S., and he is hopeful that Joaquin will continue to lead the way for change.“My son is not a kid who died and you can visit him every Sunday in the cemetery and that’s it,” said Oliver. “No, my son will be a main element in the change that this nation is screaming for, and that makes me feel a little better than just remembering my son as the kid who went to school and never came back home.” Copyright © 2020, ABC Audio. All rights reserved. Beau Lund Written bycenter_img September 8, 2020 /Sports News – National Parkland victim made into cutout at MLB games to raise gun violence awarenesslast_img read more

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