May 2021

first_imgThe Mesozoic Fossil Bluff Group of Alexander Island contains trench-slope and forearc basin deposits that formed during the eastward subduction of oceanic crust beneath the Antarctic Peninsula region. The oldest rocks of the group were deposited in the Early to Middle Jurassic on the upper trench slope, with the forearc basin (sensu stricto) forming in Late Jurassic times. Deposition continued until at least Early Cretaceous (Albian) times. The Fossil Bluff Group was affected by three phases of deformation, as follows:1.D1 — Movement on a major fault (the LeMay Range Fault) in the accretionary complex during the Middle Jurassic. Structural evidence suggests that the fault had a strike-slip component, and that the dip-slip component varied along strike from normal to reverse.2.D2 — Basin inversion in the late Early Cretaceous, whilst deposition was still occurring. Fold patterns and fault movement directions indicate that inversion occurred in a dextral transpressional setting.3.D3 — Late Cretaceous or Tertiary post-inversion extension. This caused the opening of a linear graben, George VI Sound, in a dextral transtensional setting. Phases (1) and (3) can be most easily explained by an oblique subduction model, with SE-directed subduction causing strike-slip motion on large-scale N-S trending structures in both arc and forearc. Dextral transtensional structures, such as those resulting from D3, formed when the forearc was in extension; whereas in a compressional forearc setting, sinistral transpressional structures would have resulted. As basin inversion (D2) occurred by dextral transpression, it cannot be explained by the above geometric model. It is likely, therefore, that the subduction direction was different during the D2 inversion event and that it corresponded to a Pacific-wide mid-Cretaceous compressional event. The D3 transtensional event corresponded with a dramatic decrease in spreading and subduction rates in early Tertiary timeslast_img read more

first_imgThe Auriga Nunataks shear zone places new tectonic and temporal constraints on the Mesozoic evolution of West Antarctica. The shear zone is a long-lived, arc-orthogonal, ductile transfer fault that preserves a history of regional Mesozoic compressional basement deformation and extensional arc pluton emplacement in the Antarctic Peninsula magmatic arc. It forms an east-west trending positive flower structure 2.4 km wide, exposed along 5 km of strike. Marble, graphite-bearing pyroxene-granulite, granodiorite-diorite, amphibolite, and gabbro are deformed to mylonite and marble-hosted tectonic breccia. The Mesozoic history of the shear zone is interpreted as follows: emplacement of granodiorite-diorite at circa 206 Ma during Early Jurassic dextral transtension and metamorphism that peaked at circa 188 Ma (D1), brecciation of marble and mylonitization of gneiss by Late Jurassic to Early Cretaceous sinistral shear during the peninsula-wide Palmer Land orogeny (D2), Early Cretaceous dextral transtension with emplacement of gabbro and garnet leucogranite between 140 and 135 Ma (D3), and mid-Cretaceous, ocean-vergent thrusting and sinistral transpression between 125 Ma and 80 Ma, with a peak at circa 110 Ma that folded, mylonitized, and brecciated preexisting plutonic and metamorphic rocks (D4); this is responsible for the current geometry of the shear zone. The Auriga Nunataks shear zone transferred motion between arc-parallel compressional and extensional structural elements and by hosting plutons appears to have acted like a leaky transform fault during episodes of regional extension.last_img read more

first_imgThe hydraulic behaviour of meltwater during subglacial basaltic eruptions in temperate ice is of paramount importance in understanding the eruptive processes, lithofacies and architecture of the edifices formed. Hydraulics also determines the timing, location and volume of meltwater discharge, which may be sudden and catastrophic and via subglacial and/or supraglacial routes. Increasing our knowledge of meltwater hydraulics is therefore important for understanding, predicting and mitigating the impact of meltwater release on vulnerable human communities. New observations about eruption-related meltwater hydraulics are presented for well-exposed glaciovolcanic lava-fed deltas on James Ross Island, Antarctica, and accounts of historical eruptions are also re-examined to identify the major meltwater discharge routes. The study provides the first conceptual model for how meltwater escapes supraglacially. In the absence of a crevassed layer (which will dominate any meltwater flow), overflowing may be initiated by enhanced rates of seepage, despite the intrinsically low hydraulic conductivities of snow and firn. Once overflowing is established, the rate of spillway incision is a likely overriding control on the evolution of the system and whether the discharge is unstable (fast) or stable (slower). The James Ross Island sequences demonstrate that meltwater discharge is highly dynamic and may have involved both subglacial and supraglacial escape. Subglacial discharge probably occurs throughout basaltic tuya eruptions but some periods may be dominated by concurrent overflowing. It is still unclear if overflowing systems are sufficiently stable to enable the growth of laterally extensive glaciovolcanic lava-fed deltas.last_img read more

first_imgThe UV-visible Global Ozone Monitoring by Occultation of Stars (GOMOS) instrument onboard Envisat performs nighttime measurements of ozone, NO2, NO3 and of the aerosol extinction, using the stellar occultation method. We have conducted a validation exercise using various balloon-borne instruments in different geophysical conditions from 2002 to 2006, using GOMOS measurements performed with stars of different magnitudes. GOMOS and balloon-borne vertical columns in the middle stratosphere are in excellent agreement for ozone and NO2. Some discrepancies can appear between GOMOS and balloon-borne vertical profiles for the altitude and the amplitude of the concentration maximum. These discrepancies are randomly distributed, and no bias is detected. The accuracy of individual profiles in the middle stratosphere is 10% for ozone and 25% for NO2. On the other hand, the GOMOS NO3 retrieval is difficult and no direct validation can be conducted. The GOMOS aerosol content is also well estimated, but the wavelength dependence can be better estimated if the aerosol retrieval is performed only in the visible domain. We can conclude that the GOMOS operational retrieval algorithm works well and that GOMOS has fully respected its primary objective for the study of the trends of species in the middle stratosphere, using the profiles in a statistical manner. Some individual profiles can be partly inaccurate, in particular in the lower stratosphere. Improvements could be obtained by reprocessing some GOMOS transmissions in case of specific studies in the middle and lower stratosphere when using the individual profiles.last_img read more

first_imgA multi-year, all-season time series of water column physical properties and sea ice conditions in Ryder Bay, at the western Antarctic Peninsula (WAP), is used to assess the effects on the ocean of varying ice cover. Reduced ice cover leads to increased mixing and heat loss in the winter. The reduction in stratification persists into the following summer, preconditioning the water column to a greater vertical extent of surface-driven mixing. This leads to an increased amount of heat from insolation being mixed down, affecting approximately the top 100m. The increased heat uptake in summer exceeds the heat lost the preceding winter, giving the initially counter-intuitive effect that enhanced winter cooling generates warmer temperatures in the following summer and autumn. This process is therefore a positive feedback on sea ice, as reduced sea ice leads to increased heat content in the ocean the following autumn. It also causes increased winter atmospheric temperatures due to the increased winter heat loss from the ocean. In the deeper part of the water column, heat and carbon stored in the Circumpolar Deep Water (CDW) layer are released by deep mixing events. At these depths, conditions are restored by advection and vertical mixing on multi-year timescales. In recent years, stronger deep mixing events in winter have led to a persistent reduction in CDW temperatures at the study site. Ocean glider data demonstrate the representativeness of these results across the wider region of Marguerite Bay, within which Ryder Bay is situated.last_img read more

first_img Brad James Tags: Austin Carter/Beaver/Blue Mountain/Delta/Kapri Orton/Millard/North Sevier/Panguitch/Pine View/Track FacebookTwitterLinkedInEmailBLANDING, Utah-Saturday, San Juan High School hosted the Blue Mountain Invitational, featuring various schools throughout the Mid-Utah Radio Sports Network coverage area.The boys’ title was won by Grand, as the Red Devils posted 159.5 points, barely outlasting second-place Carbon with 152 points. North Sevier’s boys finished fifth with 61 points, Gunnison was sixth with 21 points and Wayne placed ninth with 12 points.For the girls, Carbon amassed 185 points to take the meet title, easily outdistancing second-place Carbon, as the Dinos had 109 points. North Sevier’s girls were fourth with 73.5 points and Gunnison was sixth with 29 points. Wayne placed eighth with 12 points.In girls’ individual events, Gunnison’s Jade Wimmer tied for first place with Shannon Baker of Carbon in the 100-meter dash, as they each ran it in 13.55 seconds. North Sevier’s Madison Bennett placed fourth in the event.Wimmer definitively won the 200 and 400-meter dash titles over Baker in times of 26.99 seconds and 1:01.28 respectively.North Sevier’s Angel Burgess placed sixth in the 100-meter hurdles, with Monticello’s Makayla Sheeran earning the title in the event in a time of 18.36 seconds. Sheeran also won the 300-meter hurdles title in a time of 53.11 seconds.In the girls’ 800-meter run, Wayne’s Felicity Williams placed fourth, while placing sixth in the 3200-meter run.In the girls’ high jump, Wayne’s Hannah Williams finished fifth, while in the long jump, Carbon’s Shannon Baker took another indvidual title with a leap of 15-7.The girls’ shot put saw North Sevier’s Kenzie Mason take the title with a toss of 32-9, while she placed second in the girls’ discus with a throw of 91-05.50. She also placed second in the javelin with a toss of 104-08 with her teammate, McCadey Goble, placing third in the event at a throw of 90-11.North Sevier’s girls finished second in the 4 x 100 relay, third in the 4 x 400 relay and second in the medley relay.For the boys, North Sevier’s Riley Ogden won the 100-meter dash in 12.07 seconds, while his teammate, Nolan Mickelsen was fourth in the 400-meter dash.Wayne’s Logan Stevens placed third in the 300-meter hurdles, while Benjamin Hill of Gunnison finished sixth in the 800-meter run.Adam Bunker of Monticello showed well, placing first in both the 1600 and 3200-meter runs.Hunter Higgs of North Sevier won the boys’ high jump crown, with a leap of 6-1, as Gunnison’s Garrett Francis placed fourth in the event.Gabe Wilcox of North Sevier finished fifth in the boys’ shot put, and Gunnison’s Traiton Beaumont placed fourth in both the discus and javelin.In the boys’ 4 x 100 and 4 x 400 relays, North Sevier placed third and finished second in the medley relay.ST. GEORGE, Utah-Saturday, various schools in the Mid-Utah Radio Sports Network coverage area competed at the Pine View Invitational, going against the perpetually strong Region 9.Desert Hills’ boys and girls, each a perpetual power, took the respective team titles.Nevertheless, several athletes in the Mid-Utah Radio Sports Network coverage area held their own.These included Beaver’s Austin Carter, who won the shot put title with a toss of 61-08.50 feet. Panguitch’s Kapri Orton also took an individual title, earning the high jump crown with a leap of 5 feet 4 inches.Additionally, Panguitch’s Kanyon Lamb placed fourth in the 110-meter hurdles and second in the 300-meter hurdles. Lamb also finished tied for third in the high jump.Additionally, Richfield’s boys placed second in the 4 x 800 relay with the team consisting of Daniel Dastrup, Hayden Harward, Jonathan Monsen and Chaz Roberts, running it in a time of 8:26.37.Panguitch’s Kapri Orton made the finals in the girls’ 100-meter hurdles, placing eighth overall in 17.25 seconds.In the girls’ 100-meter dash, Delta’s Dani Nielson placed fourth in a time of 13.30 seconds, beating several 4-A athletes in the process.Nielson also played a role in Delta’s girls’ placing third in the 4 x 100 relay, along with her teammates, Jordyn Nielson, Ashlee Nielson and Bridgette Christensen.In the boys’ 400-meter dash, Richfield’s Kade Jensen finished third, while in the girls’ 300-meter hurdles, Savannah Nielseon of Delta placed sixth.Samantha Williams of Beaver also had a stellar showing, finishing 5th in the girls’ 800-meter run, while in the boys’ 800-meter run, Jonathan Monsen of Richfield finished 7th.Millard’s girls finished sixth in the medley relay, with Brynley Anderson, Katy Kelly, Maria Josse and Payton Miller running a time of 4:38.60.Millard’s Turner Koyle placed fourth in the boys’ 200-meter dash, and Delta’s girls excelled in another relay, placing 8th in the 4 x 400, comprised of the same team as the 4 x 100. Delta’s boys also did well in the 4 x 400, placing 8th. This team consisted of Trey Brough, Jaymen Brough, Clint Tolbert and Dax Brough.In the girls’ discus, Delta’s Brinley Henrie and Bridgett Christensen placed eighth and ninth respectively and their teammate, Ashlee Nielson, was fifth in the girls’ long jump. Written by March 24, 2018 /Sports News – Local Prep Track Roundup: 3/24last_img read more

first_img Written by Barnes recently completed his first season on the Aggies’ staff and played an instrumental role in Utah State winning 28 games, the third-most in school history. Tags: Craig Smith/National Association of Basketball Coaches/Tramel Barnes/USU Men’s Basketball FacebookTwitterLinkedInEmailLOGAN, Utah-Tuesday, Utah State men’s basketball director of operations Tramel Barnes was named as one of the Top 30 coaches under the age of 30 by the National Association Basketball of Coaches. Head basketball coach Craig Smith lauded Barnes, calling him “intelligent and personable,” asserting he [Barnes] “has a bright future in our profession.”center_img April 16, 2019 /Sports News – Local USU Men’s Basketball Assistant Tramel Barnes Named Top 30 Under 30 The Aggies also won a share of the regular season tournament and the Mountain West conference tournament. Associated Presslast_img read more

first_img Beau Lund FacebookTwitterLinkedInEmailRonald Martinez/Getty Images(MIAMI) — Prosecutors have released new footage of UFC star Conor McGregor getting arrested at a Miami Beach home after allegedly smashing and stealing a fan’s phone outside the Fountainebleau hotel.The police bodycam footage shows McGregor calmly being led from a private home to a police vehicle, where he is handcuffed before getting inside.McGregor is facing one felony charge of strong-armed robbery and one charge of misdemeanor criminal mischief after allegedly getting into an altercation with Ahmed Abdirzak, who was attempting to take a photo with McGregor on March 11, prosecutors say. He has pleaded not guilty to both charges.McGregor was exiting a Miami nightclub at 5:20 a.m. when he encountered Abdirzak, police stated.McGregor “slapped the victim’s phone out of his hand, causing it to fall to the floor,” the arrest affidavit states. “The defendant then stomped on the victim’s phone several times, damaging it.”McGregor then picked up for the phone and left with it, according to police.Federal prosecutors released surveillance footage from the incident, which they say captured the altercation.In a statement to ABC News, McGregor’s team acknowledged the incident, saying McGregor “was involved in a minor altercation involving a cell phone that resulted in a call to law enforcement. Mr. McGregor appreciates the response of law enforcement and pledges his full cooperation.”Abdirzak filed a civil suit against McGregor that has since been dropped after reaching an out-of-court settlement, The Miami Herald reported.McGregor seemed to acknowledge the incident on Instagram the day after it occurred.“Patience in this world is a virtue I continue to work on,” McGregor wrote. “I love my fans dearly. Thank you all.”Two weeks later, McGregor abruptly announced his retirement on Twitter. “Hey guys quick announcement, I’ve decided to retire from the sport formally known as ‘Mixed Martial Art’ today,” McGregor wrote. “I wish my old colleagues well going forward in competition. I now join my former partners on this venture, already in retirement” Hey guys quick announcement, I’ve decided to retire from the sport formally known as “Mixed Martial Art” today.I wish all my old colleagues well going forward in competition.I now join my former partners on this venture, already in retirement.Proper Pina Coladas on me fellas!— Conor McGregor (@TheNotoriousMMA) March 26, 2019Copyright © 2019, ABC Radio. All rights reserved. April 19, 2019 /Sports News – National Conor McGregor seen in new bodycam footage getting arrested after phone altercation Written bylast_img read more

first_imgJune 19, 2019 /Sports News – Local Bees Sweep Doubleheader With Sounds Written by FacebookTwitterLinkedInEmail(Nashville, TN) — The Bees took home two wins on Tuesday. Salt Lake swept a doubleheader against the Nashville Sounds.The Bees won the makeup game 9-4 while winning the other 2-1. Salt Lake improved to 32-and-37 on the season.The Bees will host Fresno tomorrow for two games, one of which will be a completion of a game suspended on April 10th. Tags: Doubleheader/PCL/Salt Lake Bees Robert Lovelllast_img read more

first_img Written by Brad James Tags: Track FacebookTwitterLinkedInEmailST. GEORGE, Utah-Friday, numerous Mid-Utah Radio Sports Network student-athletes competed at the Snow Canyon Invitational track and field meet in what will officially be the final UHSAA-sanctioned event before the minimum 2-week moratorium comes into play Monday.After Day 1 of competition, the girls’ leader is Hurricane as the Tigers have 12 points. Millard’s girls are respectably tied for third place (10 points) with Davis and Westlake. Delta is in 10th place with 6 points and North Sevier is in 11th place with 5 points.The current boys’ leader is Westlake as the Thunder has 16 points. Delta is tied for 7th place with Canyon View as the Rabbits and Falcons have 7 points apiece.Hope Preston of Davis (5:05.28) won the girls’ 1600-meter title. Millard’s Katy Kelly placed 22nd (5:31.66). Madelyn Christensen of North Sanpete finished 34th (5:40.48) and Ember Moat of Millard placed 39th (5:43:11).North Sanpete’s Rachael Jones placed 41st in the event (5:44.71), Paige Curtis of Delta placed 49th (5:51.86) and Aubry Cook of North Sanpete finished 52nd (5:55.61). Tamsin Stewart of North Sanpete finished 54th (5:58.74). Whytney Stoddard of Milford placed 68th (6:14.07) and Delta’s Brynnleigh Goodwin (6:21.62) finished 71st.Aimee Thurman of Millard finished 72nd (6:23.67), Milford’s Akaydeh Livingston placed 73rd (6:23.95) and Millard’s Imogen Cazares (6:31.25) finished 74th.Wayne’s Natalie Whipple finished 75th (6:39.50) and Nakomie Yardley of Beaver placed 76th (6:51.43). Sarah Barben of South Sevier (7:12.03) finished 80th. Beaver’s Myanna Vasquez finished 85th (8:07.33) and Makele Neuberger of North Sevier placed 87th (8:46.67).In the boys’ 1600-meter dash, Skyline’s Thomas Boyden (4:05.16) took the crown. North Sanpete’s Matt Hindes (4:51.21) placed 31st. His teammate, Orange Peel (4:53.34) finished 38th. Millard’s Michael Ralphs (5:04.13) placed 52nd and Keaton Hallows of North Sevier (5:05.70) finished 55th.Camden Moat of Millard (5:07.32) placed 64th and Wasatch Academy’s Ben Sparks (5:07.46) finished 65th.Ky Brown of Beaver (5:08.63) placed 67th, Millard’s Morris Maxfield (5:10.07) finished 70th. Kurtis Nielson of Delta (5:13.42) placed 72nd. North Sevier’s Kelby Bosh (5:17.18) placed 76th and South Sevier’s Blake Vellinga (5:19.36) finished 78th.Jason Cardon of Beaver (5:23.50) placed 81st with Millard’s Coleson Frisbie (5:30.48) and Marcor Maxfield (5:35.01) finishing 86th and 87th respectively.Camden Larsen of South Sevier (5:39.90) finished 90th and Delta’s Gage Smith (5:43.12) placed 91st.Beaver’s Koby Yardley (5:50.88) finished 92nd and Logan LeBaron of Millard (5:59.14) placed 93rd.North Sevier’s JJ Gurney (6:03.11) finished 94th, Beaver’s Taevin Hunter (6:04.29) placed 95th, Milford’s Brayden Fisher placed 96th (6:06.95) and North Sevier’s Gavin Baxter (6:24.94) finished 97th.In the girls’ 4 x 800 relay, Westlake prevailed with a time of 9:55.51. The Thunder’s squad consisted of Molly Jensen, Shelby Jensen, Makayla Pitcher and Alivia Scoresby.The boys’ 4 x 800 relay was won by American Fork as the Cavemen posted a time of 8:04.36. The Cavemen were represented in this event by Kooper Dibb, Nathan Jaster, Dylan Rawlings and Ashton Hysell.Millard’s girls won the girls’ sprint medley relay (4:31.02). The Eagles were represented by Kadence Koyle, Oakley King, Katy Kelly and Ember Moat in this event.In the boys’ high jump, which concluded Friday events, Westlake’s Owen Tenney (6-01.00) took the crown. Delta’s Britton Smith (5-10.00) tied for second with Jaxon Jorgenson of Canyon View. South Sevier’s Connor Peterson (5-06) placed 12th. Delta’s Jamison Bishop (5-04) placed 14th and Wayne’s Logan Chappell (5-04) tied for 27th with Dylan Samuels of Skyridge.Ky Brown of Beaver placed 30th (5-04) and Cameron Smith of Delta (5-02) tied for 31st with Skyridge’s Camden Larsen and Hurricane’s Daxston Dayley.Ethan White of Wayne placed 36th (5-02), Millard’s Jaedon Bassett (5-00) finished 38th and his teammate, Brant Stevens (5-00) placed 40th.In the girls’ 100-meter hurdles, Delta’s Savannah Nielson is the No. 6 seed (16.76 seconds) headed into Saturday’s finals.Delta’s Megan Atkinson is the No. 8 seed in the girls’ 100-meter dash (13.42 seconds) headed into Saturday’s finals.In the girls’ 400-meter dash, Adi Nielson of Delta (59.72) is the No. 2 seed. Millard’s Kara Camp (1:01.37) and Audrey Camp (1:01.72) are the No. 3 and No. 4 seeds respectively headed into Saturday’s finals.In the boys’ 400-meter dash, Delta’s Oran Finlinson (52.20) is the No. 5 seed en route to Saturday’s finals.In the boys’ shot put during Friday’s prelims, Beaver’s Treyson Harris (46-02.00) is the No. 1 seed headed into Saturday competition. Milford’s Christopher Keller (40-09.50) is the No. 6 seed and Jacob Robinson of South Sevier (39-11) is the No. 8 seed.The meet will likely resume Saturday. March 13, 2020 /Sports News – Local Numerous Mid-Utah Radio Sports Network Athletes Compete At Day 1 of Snow Canyon Invitationallast_img read more