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Wednesday, May 30, 2012

'Women won’t like working in Antarctica as there are no shops and hairdressers’

From the Telegraph, UK:  'Women won’t like working in Antarctica as there are no shops and hairdressers’


As you fly into Rothera, the main British research station in Antarctica, you see the emptiness stretching in every direction. On a continent almost 60 times the size of Britain there's not a single permanent inhabitant – just thousands upon thousands of miles of snow and ice.
Last November Rosey Grant made the journey perched in the cockpit of a small propeller plane. 'It was cloudy,' the 29-year-old meteorologist recalled when I spoke to her by phone in March, one of a series of interviews I conducted with women working at the base.
'But every now and then a glacier or an iceberg would appear in little patches of clear. Just getting pieces of the picture was tantalising. I remember thinking, "I'm glad it's like this or I'd be overwhelmed."'
Grant had spent the months leading up to her departure writing a will, bulk-buying moisturiser, and packing it, along with a flute and ice axes, into a one-metre-cubed cardboard box. As her plane descended she was afforded her first glimpse of the place that would be her home for the next 15 months: a small cluster of green buildings dwarfed by the snow-covered landscape.
Rothera is Britain's largest research station on the continent. It is run by the British Antarctic Survey (BAS), which undertakes scientific research into everything from evolutionary biology to climate change. In the 1980s it was BAS that discovered the hole in the ozone layer.

BAS operates four research stations year-round in the Antarctic (two on the island of South Georgia and two in Antarctica itself), all in British Antarctic Territory. Elsewhere countries such as America, Russia, Chile and Argentina have bases of their own. Hundreds, sometimes thousands, of uninhabited miles separate each one.
Grant arrived at Rothera at the busiest time of the year, the height of the southern summer, which runs from October to March. But by the time this article is published the base will be in the depths of the Antarctic winter. The summer crew will have departed and a skeleton staff of 18 will be left over the long, dark months. Grant and her colleague, Mairi Fenton, a 22-year-old marine biologist, will be the only women among them.
When I visited Rothera in February 2011 to film a documentary, I found it hard to imagine that, until relatively recently, women weren't allowed to work at BAS's Antarctic bases at all.

Mike Pinnock, 58, who started at BAS in the 1970s as an engineer and now sits on its board, says the 'no women' rule can be traced back to the war when the British first established the stations: 'It was a military-naval operation, so we inherited a lot of Navy principles,' he tells me from his office in BAS's Cambridge HQ.

Janet Thomson, 69, worked as a scientist for BAS in Britain from the 1960s, and recalls how she and other female scientists were forbidden from joining male colleagues on trips to Antarctica. 'There was the most appalling letter sent back from personnel [to one female applicant] saying, "Women wouldn't like it in Antarctica as there are no shops and no hairdresser." It's just laughable now, but that's how they felt at the time,' she says.

Throughout the 1960s and 1970s, Thomson was told, 'We don't have any facilities for women.' But it was about more than just bricks and mortar. The whole mindset, says Thomson, was 'men are men and they do these things and women stay at home'.

For 18 years Thomson argued her case 'round and round in a circle' until finally, in 1983, she was allowed on a research ship and became the first female BAS scientist to work inside the Antarctic Circle: 'I was very aware I was running a gauntlet and that if I did anything silly it would be, "Oh, well, that's what you expect of a woman,"' she says.

In 1986, at a small station called Signy, the first female scientists were allowed to work on British bases during the summer. In 1993 the first woman spent the winter there. In 1997 the first woman overwintered at Rothera.
Pinnock remembers being sent to another research station, expecting to have to 'crack the whip' and oversee the removal of pin-up photos from the walls in preparation. 'It would be foolish to deny that one or two people didn't feel, "This is the end of the world,"' he tells me. 'People were treading on eggshells a bit in the dining-room and bar. [But] it very quickly relaxed. And the women just became part of the team.'

Today, on average, a third of those who work at Rothera (100 or so during the summer months, about 20 in winter) will be women. This summer, not for the first time, a woman was commander in chief – Agnieszka Fryckowska, 41, originally the base meteorologist.

The fact that women today re now fully assimilated is, says Janet Thomson, exactly 'how it should be', but she's a little sad that people have forgotten what a struggle it was: 'I went to Rothera for a month in 1999 and we were in the queue for dinner and there was a young lass in front of me,' she remembers. 'I must have said something about how good it was that there were these opportunities for her now, and she just looked at me blankly and didn't understand.'

Rosey Grant agrees: 'I think our generation is not at all aware because it's not how it's been [for us]. I've never been aware of being a girl in a male-dominated environment.'

Grant's summer room-mate, Sharon Duggan, 35, who manages the marine laboratories down on the wharf from October to March, points out that the women who come to Antarctica aren't 'ultra-feminine girlie girls'. 'You are required to get your hands dirty, muck in and help out. I don't think a certain type of woman – or indeed man – would be interested in that.'

But, while climbing gear and ice axes tend to clutter the cupboards in some rooms, in others make-up and hair-straighteners line the shelves.

Every woman I spoke to had a different reason for coming south. For Grant it was a passion for snow and ice. For Alison Massey, the 32-year-old summer base assistant, it was a love of David Attenborough documentaries. For Mairi Fenton it was personal: her mother, a scientist, had wanted to work in Antarctica back in the 'no women' days, while her father, a botanist, did manage to get down in the 1970s and 'a lot of the stories my dad tells me are about how hard it was for him and how we've got it easy,' she said.

He might have a point. But, while there are plenty of modern comforts today – central heating, en suite showers, internet access (though too slow to Skype) – there's no escaping the fact that much of the work is still done outside in freezing conditions (it goes down to minus 40 degrees Celsius in winter, and when Fenton dives to collect marine samples she has to chainsaw through half a metre of ice).

Soon Fenton and Grant will have to cope with the added psychological pressures brought on by the fact that from May to July the sun won't appear above the horizon and the weather will have grounded all transport in and out.
In a medical emergency BAS would attempt evacuation, but such rescue missions aren't always possible. In 1999 an American doctor had to treat herself for breast cancer. In 1961 a Soviet doctor removed his own appendix. 'A lot of people tell you to expect a feeling of panic about the fact that you won't be able to get out,' Fenton told me. 'I haven't had that yet.'

She has, however, already experienced one of the unfortunate realities of life on the continent: relationships with those at home often crumble under the strain. Soon after her arrival she broke up with her boyfriend of three years: 'I went thinking it would last, but you feel yourself growing apart, as it's not like anywhere else on earth and you can't really describe it.'

Life at Rothera is not dissimilar to that at an expensive boarding-school. Five meals a day are served to ensure people have enough calories to work in the cold, and each Saturday there's a three-course dinner where people dress up, candles are lit and wine is served.

'It marks the end of the week,' Isabelle Gerrard, the chef, told me. 'Here, days just kind of meld into each other and so it's almost like a marking point.' And those at Rothera play as hard as they work.
One room is filled with musical instruments for the base band, another with fancy dress. Perhaps a lack of television drives you to create your own costume drama because it is, Alison Massey told me, 'one of the biggest things in people's luggage'. She brought a horse costume and her brother sent a fake beard so she could keep up with the men.

It was another pastime, however – and fear of how it might affect life on base – that made BAS initially so wary of sending women south. 'Let's be frank,' says Mike Pinnock. 'Living in Antarctica is not easy. There's the environment, the isolation. There are problems getting on in a small group. The moment you put women in, that adds another dynamic.'

He is, of course, right; many people do get together. Indeed, BAS turns out to be rather successful as a dating service. Of the eight people working at the small King Edward Point base in South Georgia in 2010, four returned as couples.

Such close-knit relations haven't upset the balance as some originally feared. Anyone who becomes pregnant must be sent home for safety reasons, but BAS says it's not yet happened. Any other problems arising from relationships, and break-ups, are just considered a messy fact of life.

Combining work here with motherhood is an altogether bigger challenge. Arriving at Christmas, Joanne Johnson, a 34-year-old geologist, spent six weeks working from a small tent out on the ice, desperately missing Phoebe, her three-year-old daughter, whom she had left at home with her husband.

'I was camping with one other person,' she tells me, now back in Cambridge. 'A man. Who doesn't have children. And who's single. So I don't think he had any idea [what I was going through]. I did feel quite alone in that, if I'm honest.'

Johnson needs to travel south every few years to collect rock samples, but if Phoebe hadn't coped with their time apart, she was contemplating a change of career. BAS says Johnson is one of just four female employees who have managed to combine their jobs with motherhood, whereas men with families are not uncommon.
When I asked other women if they'd combine children and Antarctic life the response was mixed. Sharon Duggan said she doesn't want 'marriage and family', so it 'isn't an issue' for her.

I emailed the base commander, Agnieszka Fryckowska. 'I guess I am one of those who won't jump into anything just because society tells me I should,' she wrote back. 'I'll cross that bridge when I come to it. As for women making this work [when they have] children to think about – I don't think it's fair to generalise. Is it really sensible for a mother with young children to come south for six to 18 months at a time?'

Janet Thomson never had children. 'The prospect of going to Antarctica materialised,' she says, 'and I didn't want to say goodbye to that, and then one gets too old.' Does she wish she could have had both? 'Yes,' she says quietly. 'It would have been the best of both worlds.'

 

A scrap of history resurfaces

Okay, not science related, but fascinating.

From Boston.com:  A scrap of history resurfaces
PLYMOUTH — When the Mayflower II sailed from England to Plymouth in 1957, the crew of the replica 17th-century vessel tossed some bottles overboard into the Atlantic Ocean. Each bottle contained a message signed by everyone aboard the ship, including their mascot, a little kitten named Felix. As the men watched the bottles float away and disappear into the waves, many wondered where the notes would end up, or if they would ever reach the shore.
Somehow, two bottles survived. The first Mayflower II message turned up in 1961 on the coast of Norway, and a few years later, a second one was located in the Bahamas. Then the two documents disappeared from public view. Their fate remained unknown until January of this year, when one of the crew’s signed letters resurfaced at a flea market in Florida. It is now on display in the lobby of Plimoth Plantation.
And just last week, a Plimoth Plantation employee made a surprising new discovery: More bottled messages were dropped overboard the Mayflower II than previously thought.
Historians had believed that only two bottles containing messages were thrown overboard during the Mayflower II’s maiden voyage, but actually there were four, according to Marietta Mullen, the associate director of Plimoth Plantation’s Colonial Interpretation department. She made the discovery last week while studying detailed journal entries written by the crew on the Mayflower II’s trans-Atlantic voyage.
That means two bottles are still unaccounted for, according to Mullen. It is the latest development in the story of the Mayflower II, which is about to undergo an extensive restoration.
The wooden vessel has endured a lot in its 55 years of existence. Originally designed to be a full-scale replica of the Mayflower that carried the Pilgrims here in 1620, it was built in a shipyard in the town of Brixham, in Devon, England, between 1955 and 1957. The project was the brainchild of Warwick Charlton, an English journalist who raised the money to fund the ship’s construction, which he viewed as a tribute to the United States and a symbolic gesture of thanks to Americans for helping Britain during World War II. In the spring of 1957, the replica 17th-century ship embarked on its trans-Atlantic voyage, which took nearly two months to complete.
Along the way, the crew signed four pieces of paper that were tucked into empty cider bottles. The tops were corked and sealed with candlewax, then tossed into the ocean.
Fast-forward to January 2012: John Varndell, a 63-year-old resident of Cocoa, Fla., was rummaging through antiques at a flea market with his friend Patrick McConnon when he came across a box containing old pictures and documents.
“I took them home and thought, you know, this may be important,” said Varndell.



He inspected the contents more closely at home. He picked up a frame from the box. Inside the frame was a weathered piece of lined paper. In typewritten letters, it said: “This document was dropped overboard in a sealed bottle from the barque MAYFLOWER II during her maiden voyage, which was from Plymouth England towards Plymouth Massachusetts.” The message was dated May 9, 1957, and included a typewritten list of all the crew members, from the captain to the ship’s mascot, Felix, along with their signatures (and the cat’s paw print). Another document in the box explained the origins of the Mayflower II letter, and how it had been found on the shore of Abaco Island, Bahamas, in 1965.
Intrigued, Varndell investigated further, hoping to track down one of the younger passengers who had signed the document in 1957.
“I got online and I found a gentleman who was on the ship and looked up his name in Massachusetts,” said Varndell.
Varndell said he successfully reached Joseph Meany, one of the Mayflower II cabin boys, by phone and asked, “Are you the gentleman who was on the Mayflower II?” And Meany replied: “Yes, I was.”
After Varndell explained what he had found at a flea market, Meany urged him to report his discovery to Plimoth Plantation, the museum that maintains the Mayflower II. Soon enough, Varndell was in touch with Mullen, who has worked at Plimoth Plantation for 31 years.
Mullen has extensive knowledge of the Mayflower II, and has interviewed surviving crew members and read their journals. Of the 33 crew members who were aboard the ship, only seven are still alive today, she said.
As soon as she saw Varndell’s document, she confirmed the signatures.
“I knew right away. . . . I knew this was the real thing,” said Mullen.
After she verified its authenticity, Varndell agreed to donate his find to Plimoth Plantation, so it could be put on display.
“It’s amazing that after all these years this man goes to a flea market” and finds a piece of missing history, said Mullen. “What are the chances?”
“It was amazing. It was really exciting,” she said.
Since Varndell’s discovery, Mullen has taken extra time to review journal entries from the Mayflower II’s 1957 voyage more closely. That’s how she found out that four messages were signed and bottled by the Mayflower II crew, so two more are out there, somewhere, waiting to be discovered.
“Are they at the bottom of the ocean somewhere? Are they buried on shore somewhere?” said Mullen, her eyes widening as she pondered the possibilities in her office at Plimoth Plantation.
“Is someone going to find one?”

 

Sunburst Six: The Sun Part 9

Faint young Sun problem
Theoretical models of the Sun's development suggest that 3.8 to 2.5 billion years ago, during the Archean period, the Sun was only about 75% as bright as it is today. Such a weak star would not have been able to sustain liquid water on the Earth's surface, and thus life should not have been able to develop. However, the geological record demonstrates that the Earth has remained at a fairly constant temperature throughout its history, and that the young Earth was somewhat warmer than it is today.

The consensus among scientists is that the young Earth's atmosphere contained much larger quantities of greenhouse gases (such as carbon dioxide, methane and/or ammonia) than are present today, which trapped enough heat to compensate for the smaller amount of solar energy reaching the planet.

Present anomalies
The Sun is currently behaving unexpectedly in a number of ways.

* It is in the midst of an unusual sunspot minimum, lasting far longer and with a higher percentage of spotless days than normal; since May 2008.

* It is measurably dimming; its output has dropped 0.02% at visible wavelengths and 6% at EUV wavelengths in comparison with the levels at the last solar minimum.

* Over the last two decades, the solar wind's speed has dropped by 3%, its temperature by 13%, and its density by 20%.

* Its magnetic field is at less than half strength compared to the minimum of 22 years ago. The entire heliosphere, which fills the Solar System, has shrunk as a result, thereby increasing the level of cosmic radiation striking the Earth and its atmosphere.

Monday, May 28, 2012

Sunburst 6: The Sun Part 10

Observation and effects
The brightness of the sun can cause pain from looking at it with the naked eye, although doing so for brief periods is not hazardous for normal, non-dilated eyes. Looking directly at the Sun causes phosphene visual artifacts and temporary partial blindness. It also delivers about 4 milliwatts of sunlight to the retina, slightly heating it and potentially causing damage in eyes that cannot respond properly to the brightness.

UV exposure gradually yellows the lens of the eye over a period of years and is thought to contribute to the formation of cataracts, but this depends on general exposure to solar UV, not on whether one looks directly at the Sun. Long-duration viewing of the direct Sun with the naked eye can begin to cause UV-induced, sunburn-like lesions on the retina after about 100 seconds, particularly under conditions where the UV light from the Sun is intense and well focused; conditions are worsened by young eyes or new lens implants (which admit more UV than aging natural eyes), Sun angles near the zenith, and observing locations at high altitude.

Viewing the Sun through light-concentrating optics such as binoculars may result in permanent damage to the retina without an appropriate filter that blocks UV and substantially dims the sunlight. An attenuating (ND) filter might not filter UV and so is still dangerous. Attenuating filters to view the Sun should be specifically designed for that use: some improvised filters pass UV or IR rays that can harm the eye at high brightness levels.

Unfiltered binoculars can deliver over 500 times as much energy to the retina as using the naked eye, killing retinal cells almost instantly. Even brief glances at the midday Sun through unfiltered binoculars can cause permanent blindness.

Partial solar eclipses are hazardous to view because the eye's pupil is not adapted to the unusually high visual contrast: the pupil dilates according to the total amount of light in the field of view, not by the brightest object in the field. During partial eclipses most sunlight is blocked by the Moon passing in front of the Sun, but the uncovered parts of the photosphere have the same surface brightness as during a normal day.

In the overall gloom, the pupil expands from ~2 mm to ~6 mm, and each retinal cell exposed to the solar image receives about ten times more light than it would looking at the non-eclipsed Sun. This can damage or kill those cells, resulting in small permanent blind spots for the viewer. The hazard is insidious for inexperienced observers and for children, because there is no perception of pain: it is not immediately obvious that one's vision is being destroyed.

During sunrise and sunset sunlight is attenuated due to Rayleigh scattering and Mie scattering from a particularly long passage through Earth's atmosphere, and the Sun is sometimes faint enough to be viewed comfortably with the naked eye or safely with optics (provided there is no risk of bright sunlight suddenly appearing through a break between clouds). Hazy conditions, atmospheric dust, and high humidity contribute to this atmospheric attenuation.

A rare optical phenomenon may occur shortly after sunset or before sunrise, known as a green flash. The flash is caused by light from the Sun just below the horizon being bent (usually through a temperature inversion) towards the observer. Light of shorter wavelengths (violet, blue, green) is bent more than that of longer wavelengths (yellow, orange, red) but the violet and blue light is scattered more, leaving light that is perceived as green.

Ultraviolet light from the Sun has antiseptic properties and can be used to sanitize tools and water. It also causes sunburn, and has other medical effects such as the production of vitamin D. Ultraviolet light is strongly attenuated by Earth's ozone layer, so that the amount of UV varies greatly with latitude and has been partially responsible for many biological adaptations, including variations in human skin color in different regions of the globe.

Sunday, May 27, 2012

Back to our regualrly scheduled blogging

Visiting relative  has left, traveling has done, and I'm ready to devote myself to this blog again.

So thanks for  your patience!

Monday, May 21, 2012

I crave your indulgence

My mother's sister is visiting for three days. My mom's deaf as a post, my dad can't be bothered to get out of his chair, so I will be doing the entertaining - the chauffeuring and the talking and the communicating - for the next three days. So I'll be posting back here Thursday. Thanks for your patience.

Thursday, May 17, 2012

Discover endangered animals, native plants in preserves tucked in South Florida neighborhoods

From Sun-Sentinel: Discover endangered animals, native plants in preserves tucked in South Florida neighborhoods
Get a glimpse into Florida's past — before the people, subdivisions, condo canyons and air-conditioned shopping malls wiped them out.

Just off bustling Oakland Park Boulevard, explore an ancient beach dune where endangered gopher tortoises burrow and roam the white sugar sand. Pluck delicious wild huckleberries off a bush as native Zebra Longwings flutter about.

These and other treasures are quietly waiting to be discovered inside preserves and forests hiding in neighborhoods in Oakland Park, Boca Raton, Coral Springs and other South Florida cities.

Lakeside Sand Pine Preserve in Oakland Park has 5.4 acres of white, sugar sand with flowering native plants and burrowing tortoises and other wildlife. The park is west of Interstate 95, just a block off the busy road.

"Most of these [lands] were destroyed through development," say Charles Livio, horticulturist for the City of Oakland Park.

"Forty thousand years ago, this was a coastal sand dune," he says, pointing to the snowy sand carpeting the rare scrubland. "What's unique about this preserve is its soil. It's acidic. Most soil in South Florida is alkaline. Acidic soil supports special native plants, like huckleberry, wild muscadine grape, staggerbush and fetterbush. This sand pine scrub is rare because these were the first lands developed in Florida during the building boom."

Native trees and shrubs include South Florida Slash and Sand Pines, Silver and Green Saw Palmetto, Sand Live Oaks and Myrtle Oaks. The preserve is bordered by two fresh-water lakes, surrounded by businesses and homes.

Back on the trail, Livio points out black and yellow Zebra Longwings, which are the state butterfly, and White Peacock butterflies feeding on the nectar of a beautyberry flower.

Farther down the trail is a rare colony of Reindeer moss. "Those are tiny, primitive lichen that were used by Native Americas to thicken soups and stews," Livio says. "They absorb pollutants from the air like a sponge. They are uncommon to South Florida."

The park, which the city acquired in 2001 through a grant from the Florida Communities Trust overseen by the Florida Department of Environmental Protection, is teeming with native fauna favored by burrowing gopher tortoises.

In December, the city adopted and released four of the endangered reptiles, the first in the state to do so under the Waif Tortoise Permit Adoption Program, according to city documents.

"The tortoises are our VIPs," Livio says. "They feast on gopher apple and flowering prickly pear cactus, which grows here in abundance. They only live in this type of habitat, which is hard to find."

Blazing Star
Until you arrive at the Blazing Star Preserve in Boca Raton, that is. Many of the same native plants and a colony of 25 or so tortoises can be found roaming free there, too. The preserve is one of seven in the city.

"Blazing Star is special because you can see how Florida was in the past. It's a little oasis in the middle of the city that's untouched by time," says Dawn Sinka, Boca Raton's horticulturist and arborist.

She says the 24-acre preserve was most likely a part of the same ancient sand dune found in Oakland Park. The land was acquired in 1997 through the Florida Communities Trust, she said.

"If you were standing at Blazing Star tens of thousands of years ago, you would have been looking at the ocean." Today, the view is I-95.

The preserve was named for the purple flowering plant that grows all over the open sunny areas in the park's sugar sand. They flower from September to October, she said.

Bordered by Sugar Sand Park to the west and noisy I-95 to the east, the preserve has 2 acres of wetland at its northeast end. The inaccessible 29-acre Cypress Knee Slough is to the south. The two were once connected before Palmetto Park Road separated them.

"It's special because you can see things that you can't see a quarter mile away. If you just open your eyes and look at them, they're just amazing and beautiful and rare. That makes it worth the trip to see it," Sinka says.

"Did you see the tortoise?" asks Nicolo Atria, pointing out the reptile basking just outside its underground nest. "I wonder how old he is."

Atria, who lives nearby, says he comes to the preserve twice a month. "I like the native trees. I visit botanical gardens and this is right in my own backyard."

Sandy Ridge
Head west to Sandy Ridge Sanctuary in Coral Springs and walk through a grove of more than 2,000 South Florida Slash Pines shading native plants and more than 30 gopher tortoises.

"It's [about] 40 acres of environmentally sensitive land right in the middle of the city," says Mark Westfall, Coral Springs' environmental coordinator.

The park, purchased by the city in 1996 through a bond program, is only open for guided tours on the first and third Saturdays of the month or by appointment. As you enter through locked gates, sweeping stands of native bracken ferns flank the paved trail. Blooming cardinal bromeliads blaze red and yellow high up in the Slash Pines.

"The lake at Sandy Ridge is one of the most beautiful places in the city. It's filled with fragrant water lily and 2,000 fish," Westfall said. Across the path, there's a stunning bald cypress standing sentry in the wetland. A wax myrtle grows nearby.

"The waxy cuticle of this fragrant plant was used by pioneers to make scented candles," Westfall explains as he cracks open a leaf. "It's special. It's intact habitat that's never been developed."

Lakeside Sand Pine Preserve
2820 NW 27th Ave., Oakland Park
954-630-4500; OaklandParkFl.org
Hours: 8 a.m.-3 p.m. Monday-Saturday; closed Sunday and holidays

Blazing Star Preserve
1751 W. Camino Real Road, Boca Raton
561-393-7810, CI.Boca-Raton.fl.us/rec/parks
Hours: 8 a.m. to sunset daily

Sandy Ridge Sanctuary
8501 NW 40th St., Coral Springs
954-345-2112, CoralSprings.org
Hours: Tours 9 a.m. on first and third Saturdays each month or by appointment only