A new bathymetric compilation for the South Orkney Islands, Antarctic Peninsula (49°-39°W to 64°-59°S): insights into the glacial development of the continental shelf

first_imgWe present a new, high resolution (300 m) bathymetric grid of the continental shelf surrounding the South Orkney Islands, northeast of the Antarctic Peninsula. The new grid, derived from a compilation of marine echo-sounding data, improves previous regional bathymetric representations and helps to visualize the morphology of the shelf in unrivalled detail. The compilation forms important baseline information for a range of scientific applications and end users including oceanographers, glacial modelers, biologists, and geologists. In particular, due to the limited understanding of glacial history in this region, the bathymetry provides the first detailed insights into past glacial regimes. The continental shelf is dominated by seven glacially eroded troughs, marking the pathways of glacial outlets that once drained a former ice cap centered on the South Orkney Islands. During previous glacial periods, grounded ice extended to the shelf edge north of the islands. A large, ∼250 km long sediment depocenter, interpreted as a maximum former ice limit of one or more Cenozoic glaciations, suggests that ice was only grounded to the ∼300–350 m contour in the south. Hypsometric analyses support this interpretation, indicating that a significant proportion of the shelf has been unaffected by glacial erosion. Using these observations, we propose a preliminary ice cap reconstruction for maximum glaciation of the South Orkney plateau, suggesting an ice coverage of about ∼19,000 km2. The timing of maximum ice extent, number of past advances and pattern of subsequent deglaciation(s) remain uncertain and will require further targeted marine geological and geophysical investigations to resolve.last_img read more

"A new bathymetric compilation for the South Orkney Islands, Antarctic Peninsula (49°-39°W to 64°-59°S): insights into the glacial development of the continental shelf"

Complete genome of Planococcus rifietoensis M8T, a halotolerant and potentially plant growth promoting bacterium

first_imgPlanococcus rifietoensis M8T (=DSM 15069T = ATCC BAA-790T) is a halotolerant bacterium with potential plant growth promoting properties isolated from an algal mat collected from a sulfurous spring in Campania (Italy). This paper presents the first complete genome of P. rifietoensis M8T. Genes coding for various potentially plant growth promoting properties were identified within its genome.last_img

"Complete genome of Planococcus rifietoensis M8T, a halotolerant and potentially plant growth promoting bacterium"

Tracking the spread of a passive tracer through Southern Ocean water masses

first_imgA dynamically passive inert tracer was released in the interior South Pacific Ocean at latitudes of the Antarctic Circumpolar Current. Observational cross sections of the tracer were taken over 4 consecutive years as it drifted through Drake Passage and into the Atlantic Ocean. The tracer was released within a region of high salinity relative to surrounding waters at the same density. In the absence of irreversible mixing a tracer remains at constant salinity and temperature on an isopycnal surface. To investigate the process of irreversible mixing we analysed the tracer in potential density-versus-salinity-anomaly coordinates. Observations of high tracer concentration tended to be collocated withisopycnalsalinityanomalies.Withtime,aninitiallynarrow peak in tracer concentration as a function of salinity at constant density broadened with the tracer being found at ever fresher salinities, consistent with diffusion-like behaviourinthatcoordinatesystem.Thesecondmomentofthe tracer as a function of salinity suggested an initial period of slow spreading for approximately 2 years in the Pacific, followed by more rapid spreading as the tracer entered Drake Passage and the Scotia Sea. Analysis of isopycnal salinity gradientsbasedontheArgoprogrammesuggeststhatpartof this apparent change can be explained by changes in background salinity gradients while part may be explained by the evolution of the tracer patch from a slowly growing phase wherethetracerformsfilamentstoamorerapidphasewhere the tracer mixes at 240–550m2s−1last_img read more

"Tracking the spread of a passive tracer through Southern Ocean water masses"

BYU Men’s Golf Has Season End Monday

first_imgMay 28, 2018 /Sports News – Local BYU Men’s Golf Has Season End Monday Written by FacebookTwitterLinkedInEmailSTILLWATER, Okla.-Monday, at the NCAA Men’s Golf Championships hosted by Oklahoma State University at Karsten Creek, Brigham Young’s golf squad saw its season end as they finished 35th overall.The top 15 squads advanced to the final round of stroke play and the top eight advanced to match play. These schools include host Oklahoma State, (the Cowboys are currently in first place with a net score of 1152), Duke, Texas Tech, Oklahoma, Auburn, Alabama, Texas and Texas A&M.Patrick Fishburn ended his season for the Cougars with the best overall performance on the squad as he finished 35th overall by shooting a 76 and finishing with an overall score of 293.Broc Everett of Augusta won the individual national championship, shooting a 281. Oklahoma State has the overall lead by virtue of no players on the squad shooting above 300 as team leader Matthew Wolff is shooting a 285 for the Cowboys. Bringing up the rear for Oklahoma State is Zach Bauchou and he has a respectable net score of 299.The national championship will be decided Wednesday. Tags: Broc Everett/BYU Men’s Golf/Matthew Wolff/Oklahoma State Men’s Golf/Patrick Fishburn/Zach Bauchou Brad Jameslast_img read more

"BYU Men’s Golf Has Season End Monday"

Report: Grizzlies, forward Chandler Parsons agree to separation

first_img Written by FacebookTwitterLinkedInEmailTar_Heel_Rob/iStock(MEMPHIS, Tenn.) — Chandler Parsons’ time with the Memphis Grizzlies appears to have come to an end.Citing league sources, ESPN reports the team and the 30-year-old forward agreed to separate on Sunday.The Grizzlies and Parsons’ agent will work on placing him in another team and structuring a resolution on his future, the sources told ESPN.Per his four-year, $94 million contract with Memphis, Parsons is owed $38 million, including $25.1 million for this season, according to ESPN.Copyright © 2019, ABC Radio. All rights reserved. Beau Lundcenter_img January 7, 2019 /Sports News – National Report: Grizzlies, forward Chandler Parsons agree to separationlast_img read more

"Report: Grizzlies, forward Chandler Parsons agree to separation"

Dixie State Football Routs Black Hills State; Earns 4th Straight Win

first_img FacebookTwitterLinkedInEmailST. GEORGE, Utah-Kody Wilstead had his best game of the season, completing 18 of 23 passes for 336 yards and four touchdowns as the Dixie State Trailblazers decimated Black Hills State 52-22 Saturday in Rocky Mountain Athletic Conference football action at Trailblazers Stadium.The win was the fourth in a row for the 4-1 Trailblazers, who may have hit their stride under new head coach Paul Peterson after a season-opening 36-7 loss to perennial power Colorado State-Pueblo.Wilstead also ran for 50 yards and a score on 5 carries to pace Dixie State, while his primary targets in the passing game were redshirt senior receiver Kasey Allison (4 rec, 126 yards, 2 TD’s) and junior tight end Chase Hess (4 rec, 107 yards, 2 TD’s).Defensively, redshirt freshman Conner McKay, senior defensive back Alex Lilliard, redshirt sophomore defensive lineman Dylan Hendrickson and junior defensive lineman Kyle Murray had a sack apiece for the surging Trailblazers.In defeat, redshirt freshman signal-caller Chance Eben (20 of 34, 248 yards, 2 TD’s) led the Yellow Jackets.Next Saturday, the Trailblazers host non-conference opponent Simon Fraser of British Columbia, Canada for a 7:00 pm kickoff. Dixie State returns to RMAC action October 19 at Gunnison, Colo. against the Western Colorado Mountaineers for a 1:00 pm kickoff. October 5, 2019 /Sports News – Local Dixie State Football Routs Black Hills State; Earns 4th Straight Win Brad James Tags: Alex Lilliard/Chance Eben/Chase Hess/Conner McKay/Dixie State Football/Dylan Hendrickson/Kasey Allison/Kody Wilstead/Kyle Murray/Paul Peterson/Rocky Mountain Athletic Conference/Simon Fraser/Western Colorado Written bylast_img read more

"Dixie State Football Routs Black Hills State; Earns 4th Straight Win"

Badgers Claim 80-75 Road Victory at Southern Idaho

first_img Written by February 8, 2020 /Sports News – Local Badgers Claim 80-75 Road Victory at Southern Idaho Brad James Tags: Snow Men’s basketball FacebookTwitterLinkedInEmailTWIN FALLS, Idaho (February 8, 2020) — Leading by just three points with :02 seconds remaining, Brantzen Blackner hit a pair of free throws to seal the Snow College victory on the road against Southern Idaho. The win marked the Badgers’ fourth-straight victory and solidified the team’s hold on second place in the Scenic West Athletic Conference with a two-and-a-half-game lead over Utah State Eastern in the standings.With 14:26 remaining the game, and the score tied at 49-49, the Badgers came out of a timeout to go on a 10-2 run that would create the momentum needed to hold the lead through the remainder of the game.“There’s been a lot of years where we haven’t won up here,” Snow College head coach Rob Nielson said. “It’s great for our guys to come up here and compete for the win.”Tredyn Christensen led the Badgers with 15 points on 7-of-13 shooting from the field and was credited with seven rebounds, including six offensive boards. Brayden Johnson chipped in 14 points, while Blacker and Trey Farrer had nine points each.The Badgers will return ot Ephraim on Thursday, Feb. 13 to take on Utah State Eastern. Part of the “Pack the HAC” promotion, the first 500 fans wearing orange to the game will receive a free orange creamsicle.last_img read more

"Badgers Claim 80-75 Road Victory at Southern Idaho"

SDX Energy completes flow rate test at Sobhi discovery well in Egypt

first_imgThe Sobhi discovery well is expected to produce at an optimum stabilised rate of 10-12mln cubic feet per day Flow rate test completed at Sobhi discovery well in Egypt. (Credit: Pixabay) UK-based exploration and production company SDX Energy has completed flow rate testing at the 100% owned- SD-12X (Sobhi) discovery well in the South Disouq Exploration Permit onshore Nile Delta, Egypt.During the initial drill stem test (DST), the Sobhi well flowed at a maximum rate of 25 mmscf/d on a 54/64″ choke.The well flowed at a stable rate of 15 million standard cubic feet per day (mmscf/d) over three hours on a 28/64″ choke and 10 mmscf/d over four hours on a 16/64″ choke.Based on the initial review of the well-test data, the firm expects the well to produce at an optimum stabilised rate of 10-12mln cubic feet per day, complying with the nearby Ibn Yunus-1X producing well.SDX Energy expects the Sobhi well to produce mostly dry gas as opposed to gas and condensate.SDX CEO Mark Reid said: “We are pleased with these initial well test results which confirms that we have a commercial discovery at the Sobhi well.“This discovery increases our South Disouq 2P reserves by approximately 50% given that we sole risked the well. Furthermore, Sobhi has the potential to extend the current South Disouq plateau production of 50 mmscfe/d through to 2023/24 with a low-cost tie in to our existing gas processing plant.“To have a commercial gas discovery of this scale at South Disouq is especially pleasing in the current environment as our low cost, fixed price gas development will continue to be highly cash generative for longer.”Longer rig-less test planned on Sobhi discovery wellThe company is planning to conduct a longer rig-less test on the Sobhi well in the coming weeks to assess the recoverable volume in the discovery, which is currently estimated at 24 billion cubic feet (bcf) of recoverable resource.To enable production during 2021, the Sobhi well is planned to be tied-in via a 5.8km connection to the Ibn Yunus-1X location, where infrastructure connects to the South Disouq central processing facility.In a press statement, SDX said: “The discovery will potentially only require one further development well to be drilled, which will not be necessary for another two to three years.”The latest flow rate test follows the recent discovery of gas at SD-12X well, which encountered 108ft of net high-quality gas-bearing sands.last_img read more

"SDX Energy completes flow rate test at Sobhi discovery well in Egypt"

Capstone Turbine expands footprint in Middle East

first_img Capstone Turbine secures order from oil and gas operator in Oman. (Credit: drpepperscott230 from Pixabay) Capstone Turbine, a clean technology manufacturer of microturbine energy systems, has received an order for two microturbine skid packages from a leading oil and gas exploration and production company in the Sultanate of Oman. Pipeline Supply Company (PSC), Capstone’s exclusive distributor in Oman and Qatar (www.psc-llc.com) secured the order which is expected to be commissioned in the spring of 2021.Capstone had previously announced its intentions to expand its business into the Middle East several years ago and previously delivered successful projects in Oman, Saudi Arabia, Qatar, Iraq and the United Arab Emirates (UAE). Capstone expects that with recovering oil prices and the move towards reduced gas flaring, demand will continue and should provide a positive backdrop for Capstone’s low emission microturbine solutions.Each self-contained skid solution will include two C65 Capstone microturbines. The systems will run on high pressure sour gas extracted from hydrocyclone systems at oil and gas processing stations. High pressure gas from the hydrocyclones at each site will be bled down, cleaned and conditioned before being used in each microturbine system. The power generated from the microturbines will be fed back into the customer’s low voltage power grid.“Flaring sour gas is the traditional way to dispose of unwanted gas produced during oil exploration activities, but the long-standing practice creates an immense amount of carbon dioxide emissions and adds to climate change,” said Darren Jamison, President and Chief Executive Officer of Capstone. “With its increased focus Oman could become a center of excellence in the Middle East for flare abatement, supported through small, agile companies that turn out high-quality results using technologies like Capstone,” added Mr. Jamison.Capstone’s skid solution can significantly reduce construction and startup costs while increasing the reliability of power systems. The skids are fully customizable and can be easily adapted to fit a customer’s requirements and installed in as little as one day. In addition, the microturbine skid solutions feature single point electrical and fuel connections intended to further reduce installation and engineering costs.“Pipeline Supply Company is pleased to have been awarded with the contract for the new Hanya and Raba development projects from the region’s leading oil and gas production company,” said Shanly George, General Manager at PSC. “Upon successful execution of this pilot project, we look forward to replicating this microturbine solution at dozens of other processing stations across the region,” concluded Mr. George.According to the World Bank, approximately 140 billion cubic meters of natural gas is flared annually at oil production sites around the globe. Flaring waste gas contributes to climate change by releasing millions of tons of CO2 into the atmosphere.Capstone microturbines are recognized in the oil and gas industry for their strong performance and reliability. Along with their rugged reputation, microturbines allow oil and gas operators to meet flare gas reduction objectives. By utilizing on-site natural gas, oil and gas producers have the potential to reduce harmful emissions and also lower their operating expenses. Source: Company Press Release Each self-contained skid solution will include two C65 Capstone microturbineslast_img read more

"Capstone Turbine expands footprint in Middle East"

Wintershall Dea completes top hole drilling campaign on the Nova field

first_img Wintershall Dea completes top hole drilling campaign on the Nova field. (Credit Wintershall Dea) Wintershall Dea completed the top hole drilling campaign on the operated Nova field in the Norwegian North Sea ahead of schedule.The campaign, carried out by the Seadrill-operated West Mira rig, involved drilling some 3,400 metres of top holes for the six Nova production and water injection wells on two different templates.“We continuously try to improve our drilling operations to be safer, more efficient and more sustainable. Working together as ‘One Team’ with all involved, we were able to deliver the top hole campaign safely and two weeks ahead of schedule”, said Nils Petter Norheim, Wintershall Dea Norge Head of Drilling & Wells.Five of the top holes were drilled in one batch with repetitive operations. After each operation the team evaluated the performance, capturing best practices and lessons learned to optimise the equipment and drill the next section even more efficiently. This approach helped to continuously improve the drilling performance.High efficiency also translated into a more sustainable operation, with fewer days on the rig resulting in lower emissions. The reduction falls into a broader low-emission strategy, with the West Mira operating an energy-saving hybrid battery power plant, which increases the rig’s energy efficiency. The two supply vessels that support the rig are also equipped with hybrid batteries, which further reduces the environmental footprint of the campaign.“With all the top holes drilled, we have achieved another Nova milestone ahead of plan. We will continue drilling and the next step is to safely deliver the three production wells and three water injection wells before production start which is planned for 2022.” said André Hesse, Nova Project Director at Wintershall Dea.Nova drilling will last throughout most of 2021. Source: Company Press Release The campaign, carried out by the Seadrill-operated West Mira rig, involved drilling some 3,400 metres of top holes for the six Nova production and water injection wellslast_img read more

"Wintershall Dea completes top hole drilling campaign on the Nova field"