Siachen:World’s Highest Battleground

Satellite view of the Siachen Glacier, Kashmir...

Satellite view of the Siachen Glacier, Kashmir. Image obtained by the Landsat 7 Enhanced Thematic Mapper Plus Instrument (Photo credit: Wikipedia)

 Siachen glacier  is billed as the world’s highest combat zone, but atrocious weather conditions have claimed more lives than actual fighting. The 77-kilometre-long (48-mile) glacier traverses the Line of Control, the de facto border separating Indian- and Pakistan-controlled Kashmir, at a height of over 6,300 metres (20,800 feet). Combat between the nuclear-armed foes has claimed few lives but frostbite, avalanches and driving blizzards, which can sweep men into crevasses, are deadly for the thousands of soldiers deployed there. Winter temperatures plummet to minus 70 degrees Celsius (minus 94 Fahrenheit), with blizzards gusting at speeds of 160 kilometres (100 miles) per hour. India in 1984 occupied the key areas on the glacier, including the heights, and Pakistan immediately responded by deploying its own forces. They fought a fierce battle in 1987, raising fears of all-out conflict. New Delhi says it cannot withdraw its troops from the glacier until Islamabad recognises its troop positions, fearing Pakistan will move its soldiers forward in the event of an Indian pull-out. Experts have said there are some Indian 5,000 troops on the glacier while Pakistan has less than half that number, but there are no recent estimates. Islamabad says the presence of Indians on the glacier threatens a strategic Sino-Pakistani highway located 180 kilometres away.Most of the time on Siachen, the bad weather prevents any troop movement and despite the heavy deployment, clashes are generally low-level skirmishes involving a few dozen troops. Since both sides deployed troops on Siachen, casualties from sporadic clashes have not exceeded 150 on either side. Maintaining a military presence on remote Siachen exerts a heavy financial toll. India reportedly spends more than 40 million rupees ($800,000) daily on its Siachen deployment — excluding additional wages and bonuses. All Indian soldiers who complete a tour of duty on the glacier are awarded the “Siachen Pin” as a mark of fortitude. The Kashmir region — of which Siachen is a part — is divided between Pakistan and India and is claimed by both in full. It has triggered two of the three wars between the neighbours since independence in 1947 from Britain. Siachen is close to four of the world’s 14 peaks over 8,000 metres — K2, Broad Peak, Gasherbrum I and Gasherbrum II — all of which are on the Pakistani side of the frontline.

Source: Yahoo News

  • Icy killing fields of Siachen, ‘world’s highest battleground’ (dawn.com)
  • Over 100 Pakistani soldiers trapped as avalanche hits Siachen (dawn.com)
  • 100 Paki Troops Buried in Kashmir Avalanche (waronterrornews.typepad.com)
  • Avalanche buries 100 Pakistani soldiers on Himalayan glacier (thestar.com)
  • Avalanche buries 130 Pakistan soldiers: official (dawn.com)
  • Avalanche buries 100 Pakistan troops (thesun.co.uk)
  • Avalanche buries 100 soldiers at Siachen, dead bodies being retrieved (therearenosunglasses.wordpress.com)
  • Official: Avalanche buries 130 Pakistan soldiers (foxnews.com)
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A Woman to Lead RISAT-1 mission of ISRO,India

 Valarmathi, who hails from Tamil Nadu state (in India), will lead RISAT-1 (Radar Imaging Satellite) mission, announced Indian Space Research Organisation (ISRO). She is the second woman scientist in India’s space history to head such a mission. T K Anuradha was the first woman scientist to head a space mission when GSAT-12 was launched on July 15, 2011.Valarmathi is the project director of RISAT-1, the first woman from the Tamil Nadu state to head such a project. Earlier, senior scientist R N Tyagi was the project director of RISAT.

 RISAT-1 is a microwave remote sensing satellite that has a Synthetic Aperture Radar and weighs about 1,850 kg. It is slated for launch by Polar Satellite Launch Vehicle– C19 (XL) this year into a 536 km orbit.
Posted in India, News, Satellites, Space | 1 Comment

Coldest Antarctic Water AT Ocean Bottom Decreasing for Decades

Researchers have found a large reduction in the amount of the coldest deep ocean water, called Antarctic Bottom Water, all around the Southern Ocean using data collected from 1980 to 2011. These findings, in a study now online, will likely stimulate new research on the causes of this change.

It was found that Antarctic Bottom Water has been disappearing at an average rate of about eight million metric tons per second over the past few decades, equivalent to about fifty times the average flow of the Mississippi River or about a quarter of the flow of the Gulf Stream in the Florida Straits.

Antarctic Bottom Water is formed in a few peculiar  locations around Antarctica, where seawater is cooled by the overlying air and made saltier by ice formation. The dense water then sinks to the sea floor and spreads northward, filling most of the deep ocean around the world as it slowly mixes with warmer waters above it.

The world’s deep ocean currents play a critical role in transporting heat and carbon around the planet, thus regulating our climate.Previous studies have shown that the bottom water has been warming and freshening over the past few decades, now these new results suggest that significantly less amount of this bottom water has been formed during that time .

Changes in the temperature, salinity, dissolved oxygen, and dissolved carbon dioxide of this prominent water mass have important ramifications for Earth’s climate, including contributions to sea level rise and the rate of Earth’s heat uptake.

Source:Sciencedaily

Posted in climate change, Global Warming, oceans, water | Tagged , , , , | 1 Comment

Harmful Myths About The Learning Process

Guest Post by Kaitlyn Cole

Learning happens. Everyone picks up information at their own individual pace, yet myths painting different demographics and techniques with a broad brush still creep their way into classrooms and the public consciousness alike. Feeding into them, however, proves exceptionally problematic to child and adult students hoping to eke through life with the skills they need to accomplish their goals. Parents, administrators, faculty, and even the students themselves might want to start chipping away at the following misconceptions first.

Females are inherently worse at math than males: Science knows full well that gender holds absolutely no influence over math skills, yet overarching perceptions still assert that the ladies aren’t nearly as adroit in its tenets as men. University of Wisconsin-Madison’s Janet Hyde spent nearly two decades studying the phenomenon, proving the lack of correlation with more than a million participants. The danger here is quite obvious. Hammering alleged biological inadequacies into young girls’ heads will serve as a self-fulfilling prophecy compromising their grades and future careers alike.

People with learning disabilities are of below-average intelligence: As University of Hawaii points out, learning disabilities only appear in individuals (of any age) of average to above-average intelligence; anything involving mental aptitude falls under a different definition entirely. Learning-disabled students actually hold a gifted rate around 33%, completely defying the unfortunate prevailing opinion. Once again, parents, teachers, administrators, and peers who adhere to this mindset only pile on the social anxiety, rendering it more difficult for them to succeed — even with all the tools necessary to help them get ahead. If they grow up thinking they’re somehow inferior, they might never strive toward being the best they can in the classroom, office, and beyond.

Children from lower socioeconomic backgrounds are inherently poor achievers with little intelligence: Because up to 70% of a person’s behavior is determined by nurture rather than nature, it’s irresponsible — not to mention discriminatory — to act as if kids, teens, and adults from lower socioeconomic brackets genetically possess lower intelligence. Environmental factors play the most prominent role in the lower test scores educators, politicians, and parents use to illustrate impoverished kids’ alleged inadequacy. Poor performers may bring home report cards reflecting bad nutrition, exhaustion and stress from work and/or family demands, or other stimuli. Acting as if their very real problems only indicate stupidity creates a terrible, unjust cycle of suppression and denial of wonderful opportunities.

Lecture learning is always the way to go: Yes, lectures most assuredly hold a place in education — nobody’s asking for schools to entirely dismantle the concept and stuff it into storage. But they aren’t the be-all, end-all techniques for getting students learning, either. Experts find the passive element disconcerting, but not nearly as much as how exclusive adherence to lecture-based learning takes such a “one-size-fits-all” stance. Different people process information in different ways, and the most effective classrooms blend together strategies and activities meant to engage everyone.

Rote learning is the devil/Rote learning will save us all: Honestly, both demonizing and evangelizing rote learning cause roughly equal amounts of damage. Balance, as in most areas of life, proves key when navigating this volatile education controversy. Some students and subjects greatly benefit from the repetitive memorization approach, so calling for its demise isn’t responsible. But touting it as the greatest learning technique since, well, ever is equally detrimental. The trick is in finding rote learning’s proper place and relationships with other strategies.

Standardized testing is an accurate measure of a school’s abilities: No Child Left Behind dishes out funding based on how schools perform on standardized testing, with higher scores meaning more money. The problem here is that support typically ends up going toward institutions in wealthier areas. Experienced teachers tend to gravitate toward these, and students enjoy far more access to learning enhancement technologies in the classroom and at home. Because intelligence and socioeconomic status do not inherently impact one another, all the legislation does is hand out rewards based on what’s available in the classroom. This creates a saddening cycle where economically deprived students do not receive equal opportunities before, during, and after their education wraps up — thereby perpetuating the nauseating myths that they don’t deserve anything because they’re just not smart enough.

Race holds influence over intelligence: Stephen Jay Gould may have dismantled the notion that race (and therefore cranial size) determines one’s mental aptitude in 1981′s The Mismeasure of Man, but vestiges of the once-mainstream mindset still cling — especially when one factors in family income. DNA, of course, undeniably holds sway, but not the little bits and pieces dictating skin color and facial structure. Those are too busy with their own jobs to bother with what’s going on in the ol’ grey matter. There’s also the little fact that minority and majority students both perform poorly when racial bias creeps into the classroom as a result of self-fulfilling prophecies. Merely treating classroom denizens as the equals they are nurtures overall improved aptitude.

Adults and kids can learn languages using the same approaches: Many second-language teachers — despite harboring good intentions — accidentally make coursework harder for their adult students by incorporating techniques used to teach kiddos a first. Children and adults obviously possess different learning needs, and primary and secondary tongues each require their own unique sets of strategies for effective absorption. To approach every situation armed with the exact same syllabus makes it much, much harder for adults needing to incorporate themselves in a foreign culture. Immersion, for example, is discouraged since most people over the age of 18 lack the time to fully submerge themselves in nothing but a new language.

Average- to low-performing students do better when incorporated into gifted classrooms: Students do tend to enjoy better grades and soak up lessons more effectively in groups, but more intelligent participants aren’t quite the inspiring role models educational professionals think, intentionally, anyway. Actually, they perform more adroitly when grouped with others of similar aptitude rather than peers with average to low intelligence. The National Association for Gifted Children notes how “outperforming” kids and teens usually leave the rest feeling inadequate, which might very well lead to bullying, which knocks the higher performers down because of depression and isolation.

Special education programs are only for severe cases and require special classrooms: Parents are far more likely to buy into this horrid myth than professional educators, which means denying their children access to resources needed for a well-rounded academic career. Because public schools accept federal funding to provide everything special needs students require, legally, districts must accommodate all the situations they encounter. It might even mean no more than an hour outside of mainstream classrooms a day, or the simple incorporation of lo-fi technology. Special needs come in all severity levels, so if a doctor says steps need taking, moms and dads better heed their instructions.

Doing your best is … well … best: Whether teaching adults or kids, more clear-cut goals foster more solid results; most tend to find well-meaning sentiments like, “Do your best!” too broad and ambiguous. Ratchet up the difficulty levels when wanting to issue forth challenges, and make sure to help students outline clear goals for themselves. This strategy will help increase lesson absorption while preserving the same positive confidence-building present in the more common vagaries.

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