Sven Goran Eriksson

first_imgWas Sven Goran Eriksson the man of the match at last week’s CIPD conferencein Harrogate, or should he get the red card?Eriksson: man of the matchBy Ross Wigham Football coach Sven Goran Eriksson has revealed the secrets of his famedmanagement skills, which have helped England qualify for next year’s European Championships.The most famous Swede since Abba delivered his thoughts on leadership,team-building, pressure and talent management during a riveting discussion withbusiness guru Rene Carayol. In a fascinating insight into the mind of a football genius, Eriksson tolddelegates how he jumped at the chance to become England boss, and thrives onthe pressure the role brings. Eriksson said team spirit was crucial in any high-performance team, and thatthe way to build it was through openness, honesty and discussion. “It is very important to explain exactly what you want people to do andto make sure they understand it,” he said. “I also like to take ideas from the players, and I’m always happy totake up a discussion. Respect is a great quality, and I think you should showit during the professional life. You have to explain and motivate,” headded. He said people skills were crucial to his role, and revealed how he calledall the players who did not make the 2002 World Cup squad, and addressed thewhole team following the defeat to Brazil in Japan. On the current hot topic of stress, he said that a certain level of pressurewas healthy, helping teams to achieve their goals. “It’s much better to have a team under a bit of pressure; it helpsdrive people to want to win,” he said. On his ice-cool image, he revealed he is not always as calm as the mediamakes out. He said the key to being a good manager was to be true to yourself. Eriksson: just a good dribblerBy Jane King Sven Goran Eriksson may have brought a touch of glamour to the CIPDconference, but not much insight into what business can learn from his successin football. The England coach, interviewed by business guru Rene Carayol, struggled tomake any profound analogies between sport and the corporate game. When asked byan HR manager what leadership qualities had prompted him to select DavidBeckham as the England team captain, he said: “Well, he was the mostfamous footballer in the world.” The CIPD is rumoured to have paid at least £15,000 for Sven’s bland, lessthan stimulating contribution. It appeared he had done no preparation –particularly in thinking about what it takes to build winning teams and whatthe audience might find useful. While it may have been mildly fascinating to football fans, this session wasa turn-off for many delegates who were eager to hear something new from a manprojected by the media as one of our ‘coolest’ leaders. Eriksson summed up the whole thing himself when he explained how he copes asa leader under pressure: “I talk low, talk slow and don’t say much”. Previous Article Next Article Sven Goran ErikssonOn 28 Oct 2003 in Personnel Today Comments are closed. Related posts:No related photos.last_img read more

Bank of Ireland boss resigns after visiting porno websites

first_imgBank of Ireland boss resigns after visiting porno websitesOn 8 Jun 2004 in Personnel Today Related posts:No related photos. Comments are closed. Previous Article Next Article The Bank of Ireland is searching for a new chief executive, after theresignation of Michael Soden, who has admitted using his PC during work time toaccess pornographic websites. The group CEO’s surfing habits were discovered by accident during routine maintenancework on his computer by IT staff. Soden, who has been in charge of Bank of Ireland since 2002, issued apersonal statement on the company’s website announcing his resignation. “I have taken this decision for personal reasons. This arises from accessby me on my PC to internet sites that contain content that infringed thegroup’s policy on these matters,” he said. “The content accessed was not illegal but did contain links to materialof an adult nature. I now accept that accessing this material was inappropriateand would cause embarrassment to Bank of Ireland and to the people who workthere.” Earlier in his career, Soden worked for a number of major banks and aftertaking over at Bank of Ireland had increased the company’s profitability. The bank’s board, which said it accepted Soden’s resignation “withregret”, has announced the appointment of Brian Goggin as his successor,with immediate effect. last_img read more

Work Musing | Musings on the world of work

first_imgRelated posts:No related photos. Comments are closed. beRead full article Previous Article Next Article Work Musing | Musings on the world of workShared from missc on 15 Apr 2015 in Personnel Todaylast_img

Cindy Crawford, Rande Gerber paid $10M for waterfront Miami Beach teardown

first_img4404 North Bay Road with Cindy Crawford and Rande Gerber (One Sotheby’s, Google Maps, Getty)Cindy Crawford and Rande Gerber are joining the party in Miami. The celebrity couple paid nearly $10 million for a waterfront Miami Beach teardown.The model and businesswoman and her husband, a former model and nightlife mogul, closed on the five-bedroom, 3,800-square-foot house at 4404 North Bay Road, sources told The Real Deal. The $9.6 million sale closed on Dec. 29.Page Six first reported that Crawford and Gerber bought a property on North Bay Road, but did not identify the house or price paid.Mirce Curkoski and Albert Justo of One Sotheby’s International Realty represented the sellers, and Esther Percal of Berkshire Hathaway HomeServices EWM Realty represented the buyer, according to Redfin. One Sotheby’s declined to comment on the deal, and Percal could not immediately be reached for comment.Property records show Anne Binder, Elizabeth Binder and Amy Scher sold the house. It sits on a 17,000-square-foot lot with a pool and more than 100 feet of water frontage. The home was built in 1955.Crawford has appeared on the cover of more than 1,000 magazines, co-founded the skincare product line Meaningful Beauty, and launched the Cindy Crawford Home collection. Gerber has ties to Miami Beach. He owned The Whiskey on Ocean Drive in the early 1990s, according to his bio. His Gerber Group worked with Starwood Hotels, W Hotels and other hotel groups. He also co-founded Casamigos Tequila with George Clooney, which they sold to Diageo in 2017 for more than $700 million.The house is near the waterfront mansion at 4368 North Bay Road that Shutterstock founder Jon Oringer acquired in October for $42 million. North Bay Road is also home to Phil Collins, Chris Bosh, Dwyane Wade and Gabrielle Union.Celebrities, tech and finance executives have been flocking to South Florida throughout the pandemic. Gabe Plotkin, who founded his multibillion-dollar investment management firm Melvin Capital Management, paid $44 million for the waterfront homes at 6360 and 6342 North Bay Road in November.Tampa Bay Buccaneers quarterback Tom Brady and his supermodel wife, Gisele Bündchen, purchased a waterfront property on exclusive Indian Creek Island.Model Karlie Kloss and her husband, Joshua Kushner, are also reportedly the buyers of a waterfront North Bay Road mansion that sold over the summer for $23.5 million.Contact Katherine Kallergis Message* Email Address* TagsCelebrity Real EstateMiami Beachnorth bay road Share on FacebookShare on TwitterShare on LinkedinShare via Email Share via Shortlink Full Name* Share via Shortlinklast_img read more

US home prices surged 9.5% in November

first_imgFull Name* Message* Share via Shortlink Home prices surpass 2006 peak levels. (Getty, Unsplash / Photo Illustration by Alison Bushor for The Real Deal) In November, indices tracking U.S. home prices surpassed a historic high point of nearly 15 years ago.The S&P CoreLogic Case-Shiller US National Home Price Index rose 9.5 percent year-over-year in November, up from 8.4 percent in October. The monthly index is about 26 percent higher than the previous peak of July 2006.The 20-city home price index, which tracks the housing market in 20 cities including New York City, Los Angeles, Miami and Chicago, similarly reported a 9.1 percent increase, up 1.1 percent from the prior month. The index is 15.5 percent above its previous high point in 2006.The cities of Phoenix, Seattle and San Diego again reported the biggest annual gains, though all 19 cities included in the index saw year-over-year increases. Detroit is typically included in the index, but pandemic-related delays recording sales have temporarily excluded it in recent months.Read moreAmericans bought 5.6M homes last year — the most since the bubbleIt’s never been more expensive to buy a home in the USHow builders are changing America’s suburbs to fit the times Share on FacebookShare on TwitterShare on LinkedinShare via Email Share via Shortlinkcenter_img Craig Lazzara, managing director and global head of index investment strategy at S&P Dow Jones Indices, attributed the soaring prices to homebuyers moving from urban to suburban homes.He said it’s not yet clear whether the pandemic fueled these purchases or simply accelerated the timeline for buyers who were already interested in moving out of cities.“This may represent a true secular shift in housing demand, or may simply represent an acceleration of moves that would have taken place over the next several years anyway,” Lazzara said in a statement. “Future data will be required to address that question.”Housing prices climbed over $300,000 for the first time in summer 2020, driven by the strongest demand from buyers in 14 years and historically low levels of inventory. The median sales price of existing homes ended the year at $309,800, according to the National Association of Realtors.Contact Erin Hudson TagsHousing MarketResidential Real Estate Email Address*last_img read more

Yelp, PwC test options on Manhattan’s sublease market

first_imgShare on FacebookShare on TwitterShare on LinkedinShare via Email Share via Shortlink TagsCommercial Real EstateManhattanoffice marketSubleasing Share via Shortlink Message* Email Address* Yelp’s 11 Madison and PWC’s 300 Madison. (SL Green, Brookfield) Yelp, the website popular for its crowdsourced business reviews, has two offices near Madison Square Park in Manhattan — but that may not be the case for long.The San Francisco-based company has quietly let brokers know that the spaces — one at SL Green Realty’s 11 Madison Avenue and the other at 200 Fifth Avenue — are available for sublease, but that doesn’t mean it’s abandoning New York altogether. Instead, the company is likely to see which of those spaces draws the most interest from the market, and then consolidate its employees into the other, sources familiar with the company’s plans told The Real Deal. A spokesperson for Yelp confirmed that the company is reducing its New York City footprint and plans to maintain an office in the city. The location will depend on its sublease options, the spokesperson said.Yelp’s evaluation of its office spaces — about 200,000 square feet on Madison Avenue and roughly 70,000 on Fifth Avenue — is an exercise that many companies with multiple locations are going through as they look to rightsize real estate footprints.What rightsizing looks like will be determined by how many employees return to offices, and how much room will be needed for social distancing. But how much real estate those companies can offload on the sublease market will be just as influential, if not more so.PricewaterhouseCoopers is another company that believes it can get by with one of its two Manhattan offices. The Big 4 accounting firm has quietly fielded sublease offers for its 800,000-square-foot office at Brookfield Properties’ 300 Madison Avenue and its 240,000-square-foot space at Vornado Realty Trust’s 90 Park Avenue, sources familiar with the spaces told TRD.“As PwC continues to adapt to virtual work practices and adopt new ways of working in order to best support our people and clients, we are reviewing our physical office space on an ongoing basis to ensure that it matches our needs in each market,” a spokesperson for the company told TRD. As the pandemic has forced many companies to reevaluate their office needs, the amount of space available for sublease in Manhattan is approaching record levels.The borough ended 2020 with nearly 19 million square feet of available sublease space, according to Savills. That accounts for roughly 29 percent of all the available office space in Manhattan, approaching the high point of 30 percent hit during the Great Recession.Some tenants have been able to take advantage of the sublet opportunities, which generally offer rents at rates lower than companies will get on direct deals with landlords for comparable spaces.Late last year Noom, which makes a popular weight-loss app, subleased more than 113,000 square feet at 5 Manhattan West from the advertising firm R/GA.Contact Rich Bockmann Full Name*last_img read more

More than half of NYC workers won’t return to offices by September

first_img Share via Shortlink Message* Full Name* “The overwhelming message is that both employers and workers are uncertain as to when they’re going to come back to the office and under what circumstances,” Kathryn Wylde, the Partnership’s CEO, told Gothamist. “From an employer standpoint, they’re very concerned about the mental health, stress, burnout impact of Covid. Many of them feel that they cannot put any more pressure on their employees in terms of the expectation of them coming back to the office, even though most of the CEOs I know would like to have the team back.”The study, which was conducted between Feb. 24 and March 8, surveyed 174 companies with 209,000 office workers.The pandemic forced a majority of office workers to switch to remote work at the onset of the health crisis, and some experts believe the trend of working-from-home or work-from-anywhere is likely to continue even after the pandemic.Prominent companies, including JPMorgan and Salesforce, have taken steps to reduce their real estate footprint in anticipation of the changed world in the post-pandemic era. [Gothamist] — Akiko MatsudaContact Akiko Matsuda Tags Share on FacebookShare on TwitterShare on LinkedinShare via Email Share via Shortlink About 45 percent of companies would bring employees back to offices by September. (iStock)It’ll still be some time before Manhattan’s office buildings are even close to being full again, according to a new survey of big employers.Only 45 percent of employees will be back in offices by September, according to the report from the Partnership for New York City, which was first reported by Gothamist.But 14 percent of the companies that responded said they were unsure when a majority of their employees would come back to offices. And at least some of the time, their employees will work remotely, said 56 percent of employers.As of early March, just 10 percent of Manhattan office employees have returned to the workplace.The survey also found that 8 percent of employers will require their returning workers to be vaccinated, while 61 percent will not.ADVERTISEMENTRead moreWhen will NYC really get back to work? September, experts sayJPMorgan to sublet office space as it ponders work-from-homeTarget moves to hybrid work-from-home model for corporate office Email Address* Commercial Real EstateCoronavirusManhattan Office MarketOffice Leasinglast_img read more

Breaking down New York real estate’s path to sustainability

first_imgHow do you start getting to that problem?When the law was first proposed, there were caps based on three building categories. We got that expanded to 10. I think there should be 80, which is what Energy Star is. Offices have one cap, that’s it, it doesn’t matter what goes on in the office. So if you have a building that has high density, that has data centers and trading floors, it is held to the same carbon standard as the building next door, which could be law offices and insurance headquarters. I love them too, but they’re typically bigger office spaces, conference rooms, not operating 24-7. There is societal value for what’s happening in the building that has data centers, it’s keeping the internet alive, it’s keeping banking going. So we have to find a way for those buildings to comply, when right now they can’t just because they have these energy-intensive operations going on.In your report, you focus on the technologies available now. How much of the problem is adaptation and implementation, and how much is development of brand new technologies?We need both. Energy efficiency is always your first and best friend. If you upgrade the efficiency of your building, you’re improving the asset by investing in yourself and you’re also lowering your costs. The big technology breakthroughs we need are in understanding how the building operates, the building management systems and in the data.The pandemic has laid bare some interesting facts about buildings. In Manhattan today, we’re still operating at about 10 percent occupancy, meaning buildings are 90 percent vacant. Energy usage in those buildings is down [only] 30 percent, meaning there’s a 70 percent base load for empty buildings. How is that even possible?“Pension funds are the invisible hand moving the sustainability real estate market.” The Real Deal’s Hiten Samtani and Urban Green Council CEO John MandyckWhen John Mandyck met with Brazil’s largest pension fund a few years ago, he wanted to understand the thinking behind its radical declaration that it would only invest in certified green buildings.“I was completely blown away because I was thinking they were going to say, ‘We have social pressures, we have ESG goals,’” recalled Mandyck, now the CEO of Urban Green Council, a New York-based nonprofit that advocates for improving buildings’ energy efficiency. “It had nothing to do with that. They were trying to future-proof their portfolio.”The pension fund, Previ, was convinced that properties would not hold their value over the next decade unless they were green. Similar dynamics, Mandyck argues, are beginning to play out in New York City, the world’s most valuable real estate market.ADVERTISEMENTThe Real Deal caught up with him to discuss New York’s milestone climate policy, climate tech’s potential to create healthier and more equitable neighborhoods and Urban Green’s vision for a market to trade carbon credits.Real estate’s culpability in the climate crisis hasn’t been a major focus. Why is that?I would argue that’s no longer the case in New York City. We have a landmark law [Local Law 97] that will deliver the largest carbon reduction of any city in the world. You’re pointing to a bigger issue though, in how other cities and jurisdictions are looking at climate change.I’ve seen far too often the classic pie chart of a jurisdiction’s carbon emissions. It’ll say: transportation, residential, commercial, industrial, waste. And [politicians] will say, “Oh, transportation is our largest source, so that’s where we have to put our priorities.” I’ll say, “no, buildings are your largest source — what do you think residential, commercial and industrial are? They’re buildings.” Once you do that, there’s an aha moment. This has happened at the highest levels of government that I’ve been working with over my career. Once you reframe the data, it becomes obvious where you need to focus attention.In New York, where large-scale real estate ownership is so dynastic, is there more openness to the idea of transforming buildings?The family-owned real estate enterprises think generationally. That’s their business model. And they are within sight of the generation where New York City will not function because of climate change. New York Harbor is up one foot over the last century. On top of that, New York has $3 trillion of insured coastal properties. That is twice the GDP of Canada. You can understand that this is a risk that needs to be managed.One of the big opponents of some aspects of Local Law 97 was, and remains, the Real Estate Board of New York, which represents these owners.We worked together with REBNY in the lead-up to the law. We met 80 times over eight months with 70 people from 42 organizations (Urban Green’s board includes top executives from Rudin Management, Brookfield, SL Green Realty and 32BJ SEIU). What we together recommended was an energy-efficiency law to be the backbone of Local Law 97. The city and the City Council decided it should be a carbon law. That was a major detour from what was expected. It gets you to the same place, but it leads to many other issues.“Density should be your friend for sustainability. Under Local Law 97, it’s not.” In this commercial building I’m in right now, when I turn that light on, the building is using energy, but it’s not directly emitting carbon. That carbon is being emitted at the power plant supplying the electricity, which could be five miles away, it could be 100 miles away. And every power plant burns at a different rate of efficiency. Some use different fuels. And so you have to understand exactly what’s happening at the power plant to understand the carbon emissions that are being driven. When it comes to electricity, building owners don’t exactly control carbon. They have no ownership over that power plant.So what we’ve been working hard at is … how do we make it work? Because the last thing we need is some trophy law that we can all feel good about, but if it doesn’t work, then we don’t get the carbon reduction.You make a great point about trophy laws. I was thinking about something related, which is the LEED standard. Every major building has some LEED designation. But that’s not going to move the needle. Is there an element of tokenism with some of these standards?Right there is a good example of the difference between energy efficiency and a carbon cap. We have many LEED-platinum buildings in New York City that will never, ever comply with the law. They use energy super-efficiently, but if they have 15,000 people working in the building, you can’t get around the fact that the building as a whole just uses a lot of energy. So there is a disincentive for density that we need to find a way to fix. Density should be your friend for sustainability. Under Local Law 97, it’s not. It’s easy to understand and it’s easy to calculate, but it’s a pretty blunt instrument that’s blind to what’s going on inside the building.Read more from The REInterview – In depth conversations with industry leaders and newsmakersVishaan Chakrabarti on the real estate implications of a New York less reliant on private cars Real estate’s climate reckoning, with Fifth Wall’s Brendan Wallace and Greg Smithies Portrait of a deal junkie: The Joseph Tabak story Share via Shortlink Climate ChangeLocal Law 97The REInterview Tags How do buildings become solutions to some of these issues? When you do electrification, for example, and you replace those steam radiators with a heat pump, the heat pump keeps you nice and warm in the winter, but guess what? The heat pump also cools. Now all of a sudden, you’ve provided social access to cooling during heat waves, which has been a growing issue in New York. And so you can see how you can start — if you think differently — to optimize for climate, health and equity together. When you try to do it separately, you compromise one for the other.One of your ideas I find fascinating is this idea of carbon trading, where carbon credits become a commodity that you can buy and sell.Let’s go back to the example of the building that is super energy-efficient, but still can’t comply with Local Law 97 because it has 15,000 people working there. There are very few choices on the table right now. They’re kind of left with paying a fine. A fine is a failure, a waste. It’s a lose-lose situation.Instead of paying a fine, doesn’t it make sense for the building owner that can’t comply for legitimate reasons to pay somebody else to go below their cap? Maybe the building next door is in a different capital cycle, maybe they’re replacing all the windows in the building, or maybe they’re replacing their entire chiller plant. And rational investment will say, “I’m going to invest [just] to meet my cap.” Well, what if … you could keep going? There’s no financial incentive to do so now — unless somebody else is going to pay you to do it. That’s the essence of how carbon trading could work.(Credit: Urban Green Council)Now back to equity. I actually think if we’re going to create a new currency and a new capital market, this is a once-in-a-lifetime opportunity to point it in a direction for good. We could provide incentives through the design of this program to drive those investments into environmental justice communities and low-to-moderate income communities.Is there a concern the sort of market that you’re talking about could be gamed? That rather than moving the needle on climate change, it mostly just becomes another way to make money?The way I would do it is you don’t trade a credit until you generate a credit. And so nobody does nothing unless you reduce carbon somewhere. I’m across the street from the world’s most sophisticated trading house that there is — this is what New York does. We can find a way to make this market work and work well.Could we have a global carbon trading market at some point? Real estate is local, but climate change is a global problem.I don’t think we would ever get to the point where if you own a building in New York, you could trade with a building in London. We could get to a point where if you own a building in New York, you could trade with a building in Newark, but even that would be a Herculean task. We think trading is an answer here [because Local Law 97] is a breakthrough city-level policy tool. Cap-and-trade is not new, but what we have [with this law] is cap with no trade. So if you add the trading element, we think that can actually unlock carbon savings around the world.We’re going to do our part. We’re the largest city in the country. We’re going to reduce our emissions. But guess what, after we do all that, and we spend the $20 billion, if no other city acts, New York Harbor still floods, because climate change is a global problem. So we have a responsibility to do it, but also to do it in a way that other cities can follow. And I think that’s why we’re spending so much time on carbon trading. It’s because it’s a new tool that other cities can use.This interview has been condensed and edited for clarity.(Write to Hiten Samtani at [email protected] To check out more of The REInterview, a series of his in-depth conversations with real estate leaders and newsmakers, click here.) Share on FacebookShare on TwitterShare on LinkedinShare via Email Share via Shortlink We did a program on this with several owners and engineers to look into what’s going on. We’re learning things like, if you don’t have a cloud-based system, and you work from home, all your computers are on in your office, because they’re connected to a server. We talked to one office that said that their desk energy load is exactly the same pre-Covid as during Covid when nobody was in.Second issue is that in a lot of buildings, there’s either one person or two people in the office and there isn’t the ability to split the air-conditioning system. Somebody goes somewhere, somebody goes someplace else, pretty soon you’re cooling and heating the whole space.How are you encouraging investment in climate technology?We did an analysis exactly for this reason, to say: What would happen to the retrofit market in New York City if every building owner chose energy efficiency as its compliance path to Local Law 97? What that data show is that we would create a $20 billion market for energy retrofits by 2030, it would be the largest retrofit market in the U.S. Now, the reason why we put that number out there is I’m convinced there are technologies in people’s basements and garages with entrepreneurs who are just trying to find a market. Here is the market.Real estate operators don’t really change their ways until there’s a financial incentive. Capital markets are now waking up to sustainability.They’re starting. There’s a lot farther we can go. Risk should be built into payback — that $3 trillion of assets that are at risk to climate change, that should be part of the payback that we’re reducing that risk. We’re starting to see mechanisms and instruments like C-PACE. We need more financial instruments like that to help building owners do the investments that are needed.Could you see a time where a major lender says, “Hey, you know what, your building isn’t green enough. Your rate’s going to be higher than the other guy’s rate.”It’s happening in asset-class valuation. We clearly see that green buildings have a premium, or said differently, that there is a brown discount. We’re starting to see, in other parts of the world, preferential lending based on the sustainability of a property. The greatest place we see this playing out globally is with pension funds. They are the invisible hand moving the sustainability real estate market. Ten years ago, the No. 1 reason people weren’t building green was lack of access to capital.There is now a triple threat: pressure from legislation, from capital markets and from the occupiers. But how would you respond to those who say given the pandemic, now is not the time for the city to invest in sustainability?I’m completely sympathetic to the financial crisis that we’re in. At the same time, I’m not willing to accept that we have to sacrifice health for climate or climate for health, and I would actually throw equity into the equation too: For too long, we have been presented false choices where you can either have climate but you can’t have health and equity, or you can have health but you can’t have equity and climate. Those days have to be over. We have to find a way to optimize our decisions, particularly in real estate, for climate, health and equity, and do all three.This concept of equity in buildings — is that racial, social? Break that down.I’ll give you a great example. The single largest source of carbon emissions in New York City comes from burning fossil fuels at the building for heat and hot water. So 40 percent of all carbon emissions come from that. For comparison, all transportation, combined, is 28 percent.You’re burning fossil fuel in the basement of a multifamily building. Yes, it’s releasing CO2, which is the climate issue, but it’s also releasing PM2.5 [fine particulate matter], nitrous oxide, [pollutants] that impact lung health. So we need to find a way to transition those sources to something renewable, not only for the climate, but to improve air quality in many of our neighborhoods.“For too long, we have been presented false choices, where you can have climate, but you can’t have health and equity, or you can have health, but you can’t have equity and climate. ”last_img read more

Relation between alkalic volcanism and slab-window formation

first_imgRidge crest-trench interactions along continental destructive plate margins may result in the development of slab-free windows beneath the continental margin. Slab windows were generated at various locations along the Pacific margin of the Americas and the Antarctic Peninsula during the past 70 m.y. Slab-window formation is temporally and spatially associated with mafic, alkalic volcanism. Lavas erupted above the loci of slab windows are geochemically indistinguishable from some ocean-island, plume-related basalts. However, generation of slab-window basalts from deep-seated mantle plumes requires the fortuitous initiation of plume activity following cessation of subduction. Asthenospheric upwelling and associated decompressional melting following slab-window formation are probably promoted by removal of subducted oceanic lithosphere from beneath the continental margin following the cessation of subduction. Major lithospheric extension is not a prerequisite for alkalic volcanism in this case. The close association of subduction-related volcanism and within-plate alkalic volcanism within the geologic record may also be explained by this mechanism.last_img read more

Glacio-chemical study spanning the past 2 kyr on three ice cores from Dronning Maud Land, Antarctica: 2. Seasonally resolved chemical records

first_imgThe ammonium, calcium, and sodium concentrations from three intermediate depth ice cores drilled in the area of Dronning Maud Land, East Antarctica, have been investigated. Since all measurements were performed by a high-resolution Continuous Flow Analysis system, for the first time seasonal signals of chemical trace species could be obtained from the interior of central Antarctica over a period of approximately 2 millennia. Although the elevation as well as the accumulation rate differ between the drilling sites, similar values were obtained by comparing mean concentrations spanning the last 900 years. However, a distinct lack of intersite correlation was found on decadal timescales. Despite a noticeable accumulation change, apparent in one core, no significant concentration change of all three species has occurred. All the measured ions show clear seasonal signals over the whole records. While the sea-salt-related component sodium peaks simultaneously with calcium, the maximum ammonium concentration occurs in the snow with a time lag of 2 months after the sea-salt peak. More than 60% of the calcium concentration can be attributed to an ocean source. Elevated sodium concentrations were found within this millennium compared to mean values of the whole records, but the spatially varying shape of the increase suggests that a possible climatic signal is biased by local deposition effects.last_img read more