Sunrise effects on VLF signals propagating over a long north-south path

first_imgWe present a detailed study of the times of amplitude minima observed on the 12-Mm path from NAA (24 kHz, 1 MW, Cutler, Maine) to Faraday, Antarctica, during the period 1990–1995. (NAA is a naval transmitter call sign.) This study represents the first account of the effect of the sunrise terminator when it is parallel to a propagation path at some times of the year. Since the NAA-Faraday path is within 3° of the north-south meridian, parallel orientation happens close to the equinoxes, while the maximum angle of incidence occurs during the solstices. During the solstices the terminator takes a significant length of time to cross the entire propagation path, so modal conversion effects are observed over a range of hours. During the equinoxes, however, the leading edge of the night-day transition region crosses the whole propagation path within 20 min. The interpretation of the timing of minima is consistent with modal conversion taking place as the sunrise terminator crosses the NAA-Faraday transmission path at specific, consistent locations. The timing of minima is remarkably consistent from year to year. Long wave propagation modeling is used to show that the location of nightside minima at an altitude of 45–75 km in the subionospheric waveguide represents the location of the sunrise terminator on the great circle path when dayside minima occur.last_img read more

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Majority of Kiwis still against legalising cannabis, according to latest 1 NEWS Colmar Brunton poll

first_imgLegalise: 40% (up 1 from February’s poll)Remain illegal: 49% (down 2)Will not vote: 1%Don’t know/refused: 11% (down 2) “We’re quietly confident that this number (49 opposed) will continue through the referendum.” “We’ve been supplying a lot of information, speakers and other experts…we’ve not provided funding at this stage because there just hasn’t been a need at this point but we are fully partnered with this affiliate in New Zealand,” he said.READ MORE: https://www.tvnz.co.nz/one-news/new-zealand/majority-kiwis-still-against-legalising-cannabis-according-latest-1-news-colmar-brunton-poll Mr Niforatos said the US group has been helping its New Zealand partner where it can. SAM New Zealand has taken its name from, and is working closely, with an American lobby group which opposes legal cannabis.center_img *Percentages do not add to 100% due to rounding.The spokesperson for Smart Approaches to Marijuana (SAM) New Zealand, Aaron Ironside, which is running the Say Nope to Dope campaign, said “most Kiwi families know that legalisation is not a great idea”. TVNZ One News 29 June 2020Family First Comment: Excellent result – despite a significant spend by the Drug Foundation ($300k)..“According to the poll, those more likely than average to be against legalising cannabis are National Party supporters and people aged 70 and over. Those more likely than average to be for the legalisation of cannabis are Green and Labour Party supporters, people aged 18-29, Wellingtonians and Māori.”Kiwis who were hoping they might soon be able to smoke cannabis legally might be out of luck, according to the latest 1 NEWS Colmar Brunton poll.Those polled were asked if they are planning on voting for cannabis to be legalised or to remain illegal at this year’s referendum: Smart Approaches to Marijuana US vice president Luke Niforatos told 1 NEWS he “strongly recommends New Zealanders vote no in this very misguided initiative”.last_img read more

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Cricket News Ellyse Perry, Australian superwoman, achieves a feat no cricketer has ever achieved in T20Is

first_img New Delhi: Ellyse Perry is a cricketing superwoman. The Australian allrounder has dazzled the world with her achievements in batting and bowling across all formats. In Tests, she has an average of 45 while in ODIs, she averages a staggering 76 with the bat. With the ball, Perry has taken 145 wickets in ODIs and 31 in Tests. However, in Twenty20 Internationals, Perry has achieved what no cricketer male or female has achieved in the history of the format. On Sunday, during the second Twenty20 International between England and Australia in the Women’s Ashes contest, Perry became the first cricketer on the planet to score 1000 runs and take 100 wickets in the shortest format of the game. Perry had already taken 100 wickets when she took the wicket of Natalie Sciver in the World T20 final in 2018. However, in the match at Hove, Perry chose to create some more history. England chose to bat and Perry struck early as she got the wicket of Amy Jones for the fourth time in the tour. Danielle Wyatt and Natalie Sciver fell cheaply but Tammy Beaumont steadied the ship along with Heather Knight. The 38-run stand between Beaumont and Knight looked to push England towards a good score but when both fell in quick succession, England stumbled and it took an aggressive, unbeaten 17 from Sophie Ecclestone to help England reach 121/8 in 20 overs. In response, Australia started brilliantly but lost some quick wickets. However, Perry and skipper Meg Lanning took the attack to the England bowlers. Perry smashed four boundaries and a six while Lanning was at her consistent best in this format as Australia inched closer to a win. When Perry thumped a boundary off Katherine Brunt, she became the first woman to score 1000 runs in the format and also take 100 wickets. Australia sealed the win by seven wickets and now have a 12-2 lead in the Ashes series with one match still to play on Wednesday.Also Read | Five runs needed off one ball – See this dramatic finish in Women’s Big Bash LeagueSpeaking to ESPNCricinfo after the end of the game, Perry said, “I guess it’s lovely, but I wasn’t aware of it. I actually think in T20 cricket at the international level, we probably play it as much as the men, so I have played a pretty big volume of games now – over 100. So I suppose when you’ve played 100 games you might get close to it. That’s probably the only reason I’m there – because I’ve played a lot of games,” Perry said.Also Read | Women’s Big Bash League: Brisbane Heat end Sydney dominance, beat Sixers in tense finalFormer Pakistani all-rounder Shahid Afridi (1416 runs and 98 wickets) could have almost achieved the feat but Bangladesh’s Shakib al Hasan, with 1471 runs and 88 wickets, stands next in line to join Perry. highlights For all the Latest Sports News News, Cricket News News, Download News Nation Android and iOS Mobile Apps.center_img Ellyse Perry took her 100th wicket in the 2018 World T20 final.Perry reached the landmark of 1000 runs in the second match at Hove.No male cricketer has ever achieved the double of 1000 runs and 100 wickets in T20Is.last_img read more

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Broken arm forces Ambris out of NZ ODI series

first_imgHAMILTON, New Zealand (CMC) – A broken arm has put the luckless Sunil Ambris out of the one-day series against New Zealand starting next week.The 24-year-old was struck on the forearm by aggressive left-arm seamer Neil Wagner while batting during the second innings of the final Test here yesterday, and was forced to retire hurt on five.Subsequent X-rays revealed a broken ulna bone in his left arm.It meant Ambris could not resume his innings as West Indies plummeted to 203 all out and slid a 2-0 defeat in the short series.The Vincentian has endured a torrid run of luck on his first Test tour, twice dismissed hit-wicket in successive Tests in identical fashion, trodding on his stumps as he attempted to turn short balls into the on-side.All told, he scraped together 25 runs from four innings.His replacement in the one-day side is expected to be announced shortly.West Indies clash with New Zealand in three one-day matches in Whangarei and Christchurch, December 20-26.last_img read more

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