A case study of lightning, whistlers, and associated ionospheric effects during a substorm particle injection event

first_imgSimultaneous ground-based observations of narrowband and broadband VLF radio waves and of cloud-to-ground lightning were made at widely spaced locations during the 1987 Wave-Induced Particle Precipitation (WIPP) campaign, conducted from Wallops Island, Virginia. Based on these observations, the first case study has been made of the relationships among located cloud-to-ground (CG) lightning flashes, whistlers, and associated ionospheric effects during a substorm particle injection event. This event took place 2 days after the strongest geomagnetic storm of 1987, during a reintensification in geomagnetic activity (Kp = 5) that did not affect the high rate of whistlers observed at Faraday Station, Antarctica (L = 2.46). At the time of the injection event, several intense nighttime thunderstorms were located over Long Island and the coast of New England, between 400 km northwest and 600 km north of the region geomagnetically conjugate to Faraday. About two thirds of the CG flashes that were detected in these thunderstorms during the hour following the injection event onset were found to be causatively associated with whistlers received at Faraday. During the same period the amplitude of the 24.0-kHz signal from the NAA transmitter in Cutler, Maine, propagating over the thunderstorm centers toward Wallops Island was repeatedly perturbed in a manner characteristic of previously reported VLF signatures of transient and localized ionization enhancements at D region altitudes. Though such enhancements may have been caused by whistler-induced burst electron precipitation from the magnetosphere, the data in this case are insufficient to establish a clear connection between the NAA amplitude perturbations and the Faraday Station whistlers. In view of the proximity of the NAA great circle path to the storm center, heating of the lower ionosphere by intense radiation from lightning may also have played a role in the observed VLF perturbations. The onset of each of the NAA signal perturbation events coincided with an intense cluster of radio atmospherics. Detailed temporal variations in the ELF (0.3–3 kHz) and VLF (3–30 kHz) power of similar “sferic clusters” correlated well with variations in the power of simultaneous “anomalous” optical events (AOEs) observed by a down-looking photodiode detector on a rocket at altitudes between 150 and 412 km.last_img read more

Indian Ocean: Cristóbal Colónto to Assume Command of SNMG-2

first_img View post tag: ocean Complement250 (48 officers) StatusActive View post tag: Assume Indian Ocean: Cristóbal Colónto to Assume Command of SNMG-2 Beam18.6m Length146.7m View post tag: SNMG View post tag: Indian After successfully completing an operational qualification period, the ‘Cristóbal Colón’ will carry out the final (MAR – JUL) of the three scheduled rotations of Spanish Navy warships during the Spanish command of SNMG-2.The SNMG-2 is made up of escort and logistics ships from different NATO nations. Spanish Navy Rear-admiral Eugenio Díaz del Río took command of SNMG-2 in June 2013 and his tour of duty will conclude next July.While integrated in SNMG-2, the ‘Cristóbal Colón’ will participate in operation ‘Ocean Shield’ in the Indian Ocean. This operation is NATO’s contribution to the international community efforts to counter piracy in the Horn of Africa.Farewell CeremonyThe farewell ceremony was presided over by Rear-admiral Antonio Pintos, Commander of the Naval Action Group 1 (COMGRUP-1), and attended by other military authorities and relatives of the crew.The frigate ‘Cristóbal Colón’ has a complement of 180 men and women. Further personnel on board include the International Staff, the UNAEMB (Embarked Air Unit) to support SH-60B helicopter operations, medical personnel and a Marine Corps Security detachment. View post tag: Defense View post tag: Command Range4,500 nm at 18 kn February 27, 2014 View post tag: Defence Share this article View post tag: 2 View post tag: Colónto Displacement5,800-6,391t [mappress]Press Release, February 27, 2014; Image: Spanish Navy View post tag: Cristóbal   CRISTOBAL COLON SPECIFICATIONS Draught4.75m View post tag: Naval View post tag: Navy Speed28.5 kn Back to overview,Home naval-today Indian Ocean: Cristóbal Colónto to Assume Command of SNMG-2 CRISTOBAL COLONTO PULLS OUT OF FERROLThe Spanish frigate ‘Cristóbal Colón’ (F-105) departed La Graña Naval Station on February 24 to relieve the frigate ‘Álvaro de Bazán’ (F-101) as command ship of the Standing NATO Maritime Group 2 (SNMG-2). View post tag: News by topiclast_img read more

Oxford student stars in lockdown music video

first_imgAndy has played in a number of colleges and the song has been played at multiple college bops. He has held concerts in the Bullingdon and Freud, at which he combines many instruments such as the guitar, bass, keyboards, drums and even spoons, by recording loops. Andy Vaic, a student at Oxford, has released a humorous music video about lockdown to his song ‘Why, Why, Why’. His original music video has over 40 000 views on YouTube and the song got through to the second televised round of Eurovision in Lithuania. In the music video, Andy visits the sights of Oxford looking for love. Finding everywhere empty, he befriends the local cows. Andy told Cherwell: “I was just alone in a house since the lockdown started and was getting rather bored. So I decided to do something fun and amusing to entertain myself.”last_img read more

O’Brien to speak for graduates

first_imgSenior Michael J. O’Brien has been named valedictorian of the 2012 Notre Dame graduating class and will present the valedictory address during the May 20 Commencement ceremony, the University announced in a press release Friday. O’Brien, a political science major and philosophy minor from St. Charles, Ill., will graduate with a 4.0 grade point average and will also be awarded an International Business Certificate from the Mendoza College of Business. O’Brien is editor-in-chief of “Beyond Politics: Undergraduate Journal of Politics,” and serves as president of the Notre Dame College Democrats and vice president of service for Notre Dame Circle K. He is also a fellow in Notre Dame’s National Security Program and has participated in small-group discussions with national security scholars and experts. Under the direction of political science professor Sebastian Rosato, O’Brien developed an original theory on the influence of the structure of unipolar international systems on the foreign policy behavior of the unipolar state. He has also researched religious freedom, regime composition and Islamic political movements in Muslim-majority countries. This summer, O’Brien and Rosato will co-author an article on the durability of U.S. primacy, which will be published by the Nobel Institute in Norway and an American journal of international relations. A finalist for the Rhodes Scholarship and the Gates Cambridge Scholarship, O’Brien will enter the University of Chicago Law School this far on a full-tuition merit scholarship. Senior Ashley K. Logsdon, a double major in biological science and theology from Pickerington, Ohio, will give the Commencement invocation. She will graduate with a 3.99 grade point average.last_img read more

Cats Revival Sets West End Dates; Rum Tum Tugger Goes Hip-Hop

first_img Director Trevor Nunn, designer John Napier, choreographer Gillian Lynne and Lloyd Webber will be directly overseeing the transfer along with Lloyd Webber. Cats ran for 21 years in London and 18 years on Broadway, where it won seven Tony Awards including Best Musical. Based on T.S. Eliot’s Old Possum’s Book of Practical Cats, the musical tells the story of the Jellicle cats and each cat’s individual quest to be selected as the lucky one that will ascend to “the heavyside layer.” In their desire to be chosen to rise above to cat heaven, each cat sings his or her story. Cats features the Billboard top 40 hit “Memory.” “I’m going to make Rum Tum Tugger a contemporary street cat and he has to do hip-hop. That will be a completely new way of doing it.” The composer told London’s Evening Standard.“I’ve come to the conclusion that Rum Tum Tugger was possibly the first ever rap song. TS Eliot clearly anticipated rapping in his metres.” Check out the Rum Tum Tugger in action below!center_img The previously reported revival of Andrew Lloyd Webber’s Cats has set the dates it will return to the West End. The tuner will play a limited engagement December 6 through February 28, 2015 at the London Palladium, with opening night scheduled for December 11. Based on the current U.K. touring show, Lloyd Webber is busy making some updates. View Commentslast_img read more

Jessica Hecht & Adam Kantor to Join Danny Burstein in Fiddler on the Roof

first_img Star Files Show Closed This production ended its run on Dec. 31, 2016 Related Shows Tony nominee Jessica Hecht and stage alum Adam Kantor will join five-time Tony nominee Danny Burstein in the Broadway revival of Fiddler on the Roof. They take on the roles of Tevye’s wife Golde and the tailor Motel, respectively. Performances will begin on November 12 at the Broadway Theatre. Opening night is set for December 17. The King and I’s Bartlett Sher will direct. Additional casting will be announced at a later date.Hecht earned a Tony nomination in 2010 for her performance in A View from the Bridge. She last appeared on Broadway in The Assembled Parties; her additional credits include Harvey, Julius Caesar, After the Fall and The Last Night of Ballyhoo. Last year, she starred opposite John Lithgow and Annette Bening in King Lear in Central Park.Kantor made his Broadway debut in the closing cast of Rent as Mark. He has since appeared in Next to Normal on Broadway and off-Broadway in The Last Five Years and Avenue Q, as well as the world premiere of Diner in Washington, D.C.Featuring a score by Jerry Bock and Sheldon Harnick and a book by Joseph Stein, Fiddler on the Roof takes place in Anatevka, a village in Tsarist Russia during the eve of the revolution. Tevye (Burstein) is a poor milkman who cares for his five daughters. While he and the rest of the elders in the village are deeply routed in tradition, his daughters’ forward thinking clashes with Tevye’s principles and causes a rift in the family. Danny Burstein View Comments Fiddler on the Rooflast_img read more

Larrea Is “Proud” To Have Participated In A Mission To Assist Hostages

first_imgBy Dialogo May 26, 2009 The Ecuadorian ex-minister of Internal and External Security Gustavo Larrea assured today that he feels “proud” of having participated in a mission to free hostages that were being held by the Revolutionary Armed Forces of Colombia (FARC). “I feel that the road to democracy, the road to peace requires for people such as myself in this case, to intervene in humanitarian missions, and I feel proud of having done so, Larrea stated. During an interview with the local television station Ecuavisa, he added that he didn’t feel that that participation should be censored. “I do not feel that it goes against the law to fight for hostages to be freed (…), on the contrary, I think that it is an important humanitarian gesture and I feel proud of this”, as indicated by Larrea, who once met with Luis Edgar Devia, “Raúl Reyes”, the international spokesperson for FARC who was killed in a Colombian bombing on a guerilla camp site in Ecuador in 2008. Larrea,currently a member of Government, was Minister of the Interior and, according to presidentRafael Correa, he will return to work in his administration. So far, he hasn’t revealed the country in which he had met with “Reyes”. He said that he request permission from that country to reveal its name, but he is still waiting for a response to this request. “I still do not have this authorization. I would like to tell you where and when the meeting took place; but unfortunately, I will have to wait for a response from that country to release that information”, he stated. Last May 7th, the commission for Supervision and Political Control of the Ecuadorian Legislature ruled out holding a political trial against Larrea for supposed negligence in the performance of his duty. Four official legislators out of the seven which comprise that commission, decided to close the case, presented by the opponent Julio Logroño, who considered that Larrea was negligent in meeting with the leaders of that armed group, when he attempted to exchange the hostages held by the FARC for guerrilla fighters who were being held in Colombian jails. Diplomatic relations between Ecuador and Colombia are broken since the camp site bombing, where “Raúl Reyes” died”.last_img read more

CUNA prepared to engage with Congress on third-party vendor authority

first_img continue reading » CUNA has several concerns with draft legislation that would grant NCUA direct supervisory authority over third party vendors and credit union service organizations, it wrote to leadership of the House Financial Services Task Force on Financial Technology Thursday.“Despite our reservations with the proposal and our association policy to oppose extending this authority to NCUA, in the interest of ensuring that our nation’s information security apparatus is as strong as it needs to be to combat cyberattack and data breach, we are open to continued dialogue regarding proposed amendments to the BSCA that could augment NCUA’s current oversight of third-party vendors and CUSOs,” the letter reads. “We have discussed this topic in detail with our membership committees and look forward to working with all stakeholders on this issue.”CUNA’s concerns with the draft legislation include:NCUA has exercised very effective regulation of CUSOs and third-party vendors without the authority, rendering the change proposed in the draft legislation a solution in search of a problem; ShareShareSharePrintMailGooglePinterestDiggRedditStumbleuponDeliciousBufferTumblrlast_img read more

Retail: From minor to major

first_imgWould you like to read more?Register for free to finish this article.Sign up now for the following benefits:Four FREE articles of your choice per monthBreaking news, comment and analysis from industry experts as it happensChoose from our portfolio of email newsletters To access this article REGISTER NOWWould you like print copies, app and digital replica access too? SUBSCRIBE for as little as £5 per week.last_img

Crouch is staying put – Hughes

first_img Press Association Hughes said: “It was a little bit difficult for us to get a foothold in the game in the first half. The wind was in our face and we didn’t really get on the front foot and have that platform to build the performance. “But I made a change at half-time and I think that probably helped us, and we were much better. We had the benefit of the wind at our back, which made an immediate impact. “Obviously Charlie came on and scored, which settled the half very nicely for us, and we were very much on the front foot then. “We had to pick ourselves up with the disappointment of the equaliser but I was really pleased with the reaction of Erik and his team-mates. They got round him, picked him up very quickly and that was important for us. “And then we were able to go on and score a great goal at the other end. The second-half performance was very good.” Aston Villa have now lost three games in a row but manager Paul Lambert was encouraged by their performance, especially in the first half. He said: “I never thought we deserved to lose that one. The last two performances against Fulham and Manchester United, we didn’t deserve anything, but that one I thought we deserved something. “We got ourselves back into the game in really strong condition. I couldn’t fault the lads for their effort and the way we started. I thought we were the better team in the first half. We looked threatening. I’m disappointed to lose but that was better from us.” Lambert left out striker Christian Benteke, who has been struggling with a knee problem, and confirmed the Belgian is a major doubt for the Boxing Day clash with Crystal Palace. “He’s been carrying the injury so we’ll just have to try to get it right,” said Lambert. “Hopefully the rest will do him the world of good. There’s too many games to risk him.” Lambert, meanwhile, did not have too many complaints about referee Craig Pawson’s decision only to show Marc Wilson a yellow card during the first half. A mistake from the Stoke defender allowed Andreas Weimann through on goal but Pawson deemed the striker had played the ball too close to keeper Asmir Begovic before Wilson brought him down. Lambert said: “Andi’s got there first but the referee’s interpretation was that the goalkeeper had possession of the ball and we have to respect his decision. “Some referees might have been different. We understand that he didn’t think it was worthy of a red card.” Stoke manager Mark Hughes insisted Peter Crouch will not be leaving the club in January after he propelled the Potters into the top half of the Barclays Premier League table. Crouch has been linked with a move to join up with either of two former managers – Harry Redknapp at QPR or Tony Pulis at Crystal Palace – with Stoke reportedly chasing Hannover striker Mame Biram Diouf. But Hughes said: “He’s not going anywhere in January.” Crouch was named man of the match, and Hughes added: “He obviously gives us a focus to our attacking play. “I played that role for many years with my back to the goal, and it’s a thankless task on occasions. Sometimes you have to take hits for the team. That’s what Peter did today and has done for a long time. “He’s an accomplished football player. He’s being playing at this level for a long time and you don’t do that unless you’re a very good player.” It could be a red letter day for the Crouch family, with wife Abbey Clancy contesting the final of Strictly Come Dancing later. Crouch told the BBC: “I’d like to think I’ve given her some tips but I’ve only got the robot in my locker.” Stoke have lost only one of their last eight Premier League games and the victory lifted them up to 10th place. The former England striker scored the winning goal in the 70th minute at the Britannia Stadium as Stoke made it back-to-back home wins in the league with a 2-1 victory over Aston Villa. Half-time substitute Charlie Adam had given the hosts the lead in the 51st minute before a poor header from Erik Pieters allowed Libor Kozak to level 15 minutes later. last_img read more