Sunday, 14 April 2013

Jobs

What Problems do People Face who Work There? How do They Survive the Harsh Winter Conditions?


There are many reasons why people visit Antarctica, but its mainly because of scientific research. Some others are:

  • In 50 or 60 years it may not be there due to global warming.
  • To carry out new research. Sometime scientists may find out how to keep Antarctica from being affected because of this research.
  • People want to see its beauty.
Toque and utensils
Here is the list of jobs that the British Antarctic Survey are offering:
  • Electrical Technician
  • Mechanical Technician
  • Building Technician
  • Chefs
  • Carpenters
  • Boating Officers
  • Dive Officers
  • Communication Manager
  • Archive Manager
  • Meteorologists
  • Zoological Field Assistants
  • Marine Biologists
  • Marine Engineer

Chefs

This is an interview with chef Andrew Hines about working in Antarctica and his experiences.
(Ref. Classroom Antarctica)

At age 13 or so, what did you want to do when you grew up?

A motor mechanic. But my grades weren't terrific so the options regarding my chosen career of motor mechanic were limited. So I took up being a kitchen hand to finance my cars until an apprenticeship came. That's when I entered the hospitality industry and ended up loving it. I started being a dishwasher and realised that being a chef would be a lot better than dish washing, and I'm terribly glad I did. I discovered my true calling.

What town or city are you from?

Bathurst, New South Wales, Australia

What were your educational/technical qualifications when you first worked in Antarctica?

Year 10, a commercial cooking apprenticeship and qualification as commercial cook.

What was your work experience before undertaking your position in Antarctica?

I worked for three months at a five star hotel in Sydney and for two years with Contiki Holidays in London, one year of which was on canal boats in the Midlands, and one year working on a tourist boat in Athens in what was really an isolated situation. I also worked as a relief chef in London, so I had worked away from home for extended periods.

Why did you want to go to Antarctica?

For a once-in-a-lifetime opportunity, for the adventure of it, a place I'd never been before and sounded like fun. I was due to go back to Contiki when I heard an ad on the radio from the Commonwealth employment service. I rang the Antarctic Division, but I never thought I'd be selected, especially when I heard there were 400 applications.

What is your Antarctic experience?

Winter at Mawson in 1993, and summers at Casey in 1990-91 and Davis 1995-96.

What did you do in Antarctica?

I was a chef, and at Mawson I was also the fire officer.

What skills did you need to do that work?

Well, cheffing skills of course. And the experience of cooking in isolated spots so I knew I could cope in stressful situations alone. Most Antarctic chefs have worked in mines or on oil rigs or cattle stations, or have worked with the armed services.

What did you like most about living and working in Antarctica?

The people you get to know so very well, as well as you know your brother or your sister. And getting up at four a.m. to bake the bread with the radio turned up really loud, watching the icebergs cruise past the window. And the freedom to cook what you want, without any direct supervision.

What was the scariest thing that happened to you?

Responding one morning to a fire alarm in the mess at one a.m., knowing there was a party in progress and some of my close friends could be injured or in danger. It was a false alarm, but in those moments before I reached the mess I felt very scared.

What was the greatest challenge for you?

Not running out of food. We had a very high proportion of construction workers at Mawson when I wintered, and they would have liked steak every night. But we only had enough steak for once or twice a week. So it was a daily task to come up with new and different dishes that would appeal to them (spicy Thai chicken became a bit of a hit). You have to find 50 million ways of cooking chicken and fish so everyone likes it.

What did you miss most about Australia?

My family.

What was the most striking thing you noticed when you returned from Antarctica?

Penguins playing on the ice
  • Smells - trees and grass mainly.
  • Traffic lights - remembering that the green ones mean you can go and the red ones mean you have to stop.
  • As fire officer at Mawson, I was always waiting for an alarm to sound. When there was a power shortage, this would increase the chances of a fire alarm going off. One of the first nights I was back in Australia, I sprang out of bed, not hearing the power house running, thinking we had a black out…

Do you want to go again?

Yes, but not until my kids have left school. I just couldn't leave them. I'd go back for the people and the work. Sure, it is absolutely breathtaking, but it's the dynamics of people which is so fascinating. Each station is a smorgasbord and lottery of people and each year is different because of that.

What do you think should happen to Antarctica in the future?

It should be a World Park for future generations.

Marine Biologists (Ref. Yahoo Answers)

Marine biology is a scientific study of organisms from the ocean or other marine habitat.  A marine biologists are scientists that closely examine salt water organisms to see what effect they have on the environment and other creatures.

Day in the Life

9:30 am – 10:30 am 
Collecting animal samples underwater (such as fish, crabs, clams, mussels, or aphids). 

10:30 am – 11:00 am 
Organizing samples; taking a break. 

11:00 am – 12:00 pm 
Collecting more samples. 

12:00 pm – 2:00 pm 
Organizing samples; walking back to the field station; placing samples in tanks; eating lunch with other scientists. 

2:00 pm – 3:00 pm 
Doing data analysis on the computer. 

3:00 pm – 4:00 pm 
Setting up a laboratory experiment. 

4:00 pm – 5:00 pm Tagging animal samples for a lab experiment. 

5:00 pm – 6:00 pm 
Monitoring the results of a feeding experiment from the previous day. 

6:00 pm – 9:00 pm 
Working on the computer, writing a research paper. 

Winter 

9:00 am – 10:00 am 
Preparing to teach a class. 

10:00 am – 11:00 am 
Teaching a class of undergraduate students (lecturing and answering questions). 

11:00 am – 12:00 pm 

Meeting with students to discuss their projects and papers. 

12:00 pm – 1:00 pm 
Doing aerobics. 

1:00 pm – 2:00 pm 
Eating lunch; reading scientific papers. 

2:00 pm – 3:00 pm 
In my molecular laboratory, meeting with graduate students; discussing ongoing experiments. 

3:00 pm – 4:00 pm 
Setting up a PRC experiment (getting ready to perform a chemical analysis of an animal’s DNA). 

4:00 pm – 5:00 pm 
Pouring gel to be used in the DNA analysis. 

5:00 pm – 6:00 pm 
Loading PRC samples onto the gel. 

6:00 pm – 7:00 pm 
Photographing the samples. 

9:00 pm – 10:00 pm 
Preparing for a class the following day.

Problems people face
There are many problems that people face going to Antarctica to work. Some of these problems are personal, for example  to do with their family. But, others are to do with the conditions as you will find out below.
  • If the scientists have a once in a lifetime oppurtunity, then they wouldn't want to miss it. However, if you have family then you may not want to go without them, or leave them, etc.
  • No roads means it is harder to find your place with a map
  • For 4 months of the year, Antarctica gets 24 hours of sunlight, whereas in June, there is no sunlight for the whole month. This makes the temperature drop and it is obviously very hard to see. But when there is 24 hours of sunlight, it can be very hard to get any sleep!


Surviving the Harsh Conditions
Antarctica is one of the driest, coldest and windiest places on Earth and so that is a major problem when working there. One of the lowest ever recorded temperatures there was -89.6 degrees Celsius! Celsius. Wind speeds during gales can reach 320 km per hour. The average wind speed is over 70 km per hour. Also, if you don't wear enough layers then your body will freeze and you will get frostbite. This is when your fingers and toes lose heat, feeling and circulation, they go black and fall off. 

Wildlife

What types of wildlife live in Antarctica?   

There are many different varieties of marine wildlife but not so many on land animals. In shallow waters it is very hard to survive as there is a crust of ice on the sea bed. However, in deeper waters it is much easier to survive, but it is much colder. There is a much more wide variety under water in the Antarctic Ocean than in the Arctic Ocean. There are many corals and anemones anchored to the sea bed and more than 300 varieties of sponges! Many of the inhabitants feed on each other or dead plankton! Food is scarce most of the year and therefore the animals function slower because of this and also because of the temperature. The creatures produce a lot fewer, but larger, eggs and look after them with care. Many animals live longer than their equivalents in warmer waters. Some sponges have been known to live for several 100 years! Around about 71% of Earth is covered in water, whether that is lakes or oceans. The average ocean depth is 4 km and so there is around about 300 times more inhabitants of marine life than there is land animals and humans. Here is some information on various animals that can be found underwater, on land or in the sky:

Sea Urchins (Sterechinus neumayeri)

Sea Urchins have spines on them that can be very dangerous and poisonous. They can come in colours from very bright red to a dull purple and they can grow to 5cm in diameter. Their spines are positioned in vertical rows and they are very strong, long and are white-tipped. In between them are smaller spines that densely cover the skeleton (test). This enables the animal to move along the ground and also to defend itself against predators.

Penguins

There are 3 different types of penguins that live in Antarctica all year round. These are: Emperor Penguin (Aptenodytes forsteri), Chinstrap Penguin (Pygoscelis antarcticus least concern) and the Adélie Penguin (Pygoscelis adeliae near threatened). Here is some information on the most well known and populated species of penguin:


Emperor Penguin (Aptenodytes forsteri) Near Threatened)
Adults and juvenile penguin

Emperor penguins are the largest and heaviest penguins of them all. The adults can be 110 - 130 cm tall and weigh from 22.7 to 45.4 kg. However, this varies as the males can weigh more than the females. The weight can also vary between seasons as they will weigh much less when they are raising chicks and incubating eggs. Male penguins must stand to incubate their eggs for two months and during this time they don't eat anything. Many male penguins can lose up to 12 kg whilst they wait for the eggs to hatch. The average weight of a male at the start of the breeding time is around 38 kg and for the females, around 29.5 kg. However, afterwards it drops to around 23 kg for both sexes.

Like all penguins, Emperors have a streamlined body to minimize drag while swimming, and their wings have become stiff, flat flippers. On the tongue, there are rear-facing barbs so prey cannot escape once caught. Males and females are similar in size and colour. The adult has deep black dorsal feathers, covering the head, chin, throat, back, dorsal part of the flippers, and tail. The black plumage sharply defines it's border from the light-coloured plumage elsewhere. The underparts of the wings and belly are white, becoming pale yellow in the upper breast, while the ear patches are bright yellow. The upper jaw of the 8 cm long bill is black, and the lower jaw can be pink, orange or lilac. In juveniles, the ear patches, chin and throat are white, while its bill is black. The Emperor chick is typically covered with silver-grey down and has a black head and white mask. Chicks weigh around 315 g after hatching, and fledge when they reach about 50% of adult weight.


Emperor Penguin's dark plumage fades to brown from November until February, before the yearly moult in January and February. Moulting is very fast compared with other birds, taking only around 34 days. Emperor Penguin feathers emerge from the skin after they have grown to a third of their total length, and before old feathers are lost, to help reduce heat loss. New feathers then push out the old ones before finishing their growth.

Adaptations to cold

The Emperor Penguin breeds in the coldest environment of any bird species; air temperatures may reach −40 °C, and wind speeds may reach 89 mph. Water temperature is a very cold −1.8 °C, which is much lower than the Emperor Penguin's average body temperature of 39 °C. The species has adapted in several ways so they don't suffer from heat loss. Feathers provide 80–90% of its insulation, and it also has a layer of sub-dermal fat which may be up to 3 cm thick before breeding. This effective blubber layer hinders the mobility of these penguins when they are on land compared to its less well fat-insulated cousin, the Magellanic Penguin. Its stiff feathers are short, spear-shaped, and densely packed over the entire skin surface. With around 15 feathers per cm2, it has the highest feather density of any bird species. An extra layer of insulation is formed by separate shafts of downy filaments between feathers and skin. Muscles allow the feathers to be held erect on land, reducing heat loss by trapping a layer of air next to the skin. On the other hand, the plumage is flattened in water, this then helps to keep the skin and the downy under layer dry. Preening is vital to assist the progress of insulation and in keeping the plumage oily and water-repellent.

The Emperor Penguin is able to maintain its core body temperature without altering its life, over a wide range of temperatures. Known as the thermo-neutral range, this extends from -10 to 20 °C. Below this temperature range, its life rate increases significantly, although an individual can maintain its core temperature from 38 ° down to −47 °C. At temperatures above 20 °C, an Emperor Penguin may become agitated as its body temperature and life rate rise to increase heat loss. Raising its wings and exposing the undersides increases the exposure of its body surface to the air by 16%, facilitating further heat loss.


Other Penguin Species that Inhabit Antarctica

Chinstrap penguin from the front

Adélie Penguin



Penguin Chick
Southern Giant Petrel (Macronectes giganteus) Least Concern

The Southern Giant Petrel, also known as the Antarctic Giant PetrelGiant FulmarStinker, and Stinkpot, is a large sea bird of the southern oceans.
More common Dark Southern Giant Petrel
This petrel is the largest of the Procellariidae and measures 86–99 cm, with a wingspan of 185–205 cm. The male weighs approximately 5 kg and the female 3–8 kg. They have a considerably large yellow bill, with a green tip and greyish-brown legs. 
There are two different morphs; the dark which resembles the Northern Giant Petrel, and the more distinct light morph. On the dark morph, the upper breast, head and neck are light with the remainder of its plumage being mottled brown. The leading edge of its wing is lighter as is the base of the inner primaries, on the underside.
A rarer Light Southern Giant Petrel
The light morph is rarer and very distinct with only slight black speckles on an otherwise all white look. As juveniles, the dark morph starts off more sooty brown and pales as it ages. Both Giant Petrels have legs that are stronger and therefore can move around on land rather effectively. Finally, when in flight this species has a somewhat hunchbacked appearance.
It, like all members of the Procellariiformes have certain features that set them apart from other birds. First, they have nasal passages that attach to the upper bill called naricorns. Although the nostrils on the Petrels are on the top of the bill. The bills of all Procellariiformes are also unique in that they are split into between 7 and 9 horny plates. Finally, they produce a stomach oil made up of wax esters and triglycerides that is stored in the proventriculus. This is used against predators as well as an energy rich food source for chicks and for the adults during their long flights. They also have a salt gland that is situated above the nasal passage and helps desalinate their bodies, due to the high amount of ocean water that they imbibe; it excretes a concentrated saline solution from the nostrils.

Other animals found there and whether they are endangered:

  • Weddell Seal (Least Concern)
  • Leopard Seal (Least Concern, )
  • Crab-Eater Seal (Least Concern)
  • Antarctic Fur Seal (Least Concern)
  • Southern Elephant Seal (Least Concern)
  • Ross Seal (Least Concern)
  • Orcas (Near Threatened)
  • Blue Whale (Endangered)
  • Black-Browed Albatross (Endangered)
  • Wandering Albatross (Vulnerable)
  • Antarctic Shag (Least Concern)
Black-Browed Albatross
Crab-Eater Seal

Antarctic Fur Seal
Southern Elephant Seal

Ross Seal
Blue Whale


Antarctic Shag








Wandering Albatross


Orca


Leopard Seal


Weddell Seal
The Food Chain
This is an example of Antarctica's food chain. It shows the producers, predators and consumers.


PRODUCERS - Phytoplankton

CONSUMERS – Sea birds, Crab-eater Seals, Penguins, Blue Whale, Fish, Squid, Krill.

PREDATOR – Killer whale, Leopard seal
PRIMARY CONSUMER – Krill, Small Fish and Squids
SECONDARY CONSUMER – Sea birds, Crab-eater Seals, Penguins and Blue Whale
HERBIVORE - Krill
CARNIVORE – All, but Krill


Killer Whale --- Leopard Seal
Sea Birds --- Penguins --- Crab-eater Seals --- Blue Whales
Fish --- Squids --- Krill
Phytoplankton

Animals that are Hunted and Why
Here is the list of animals that was shown above, but with the reason of why they are or aren't hunted:


  • Seals - Hunted -  Fur seals had been virtually wiped out since the industry started in 1800 when 112'000 skins were taken. By 1822 James Weddell estimated that 1.2 million seals had been slaughtered. From 1870 the industry was uneconomic because so few seals were left, and when commercial sealing finally ended in 1912, around 3 million fur seals had been killed. Elephant seals were the next target as they were harvested for their blubber rather than their skins. By the 1950s when that industry also failed, over 1 million seals had died. Crabeater, Weddell, Ross and leopard seals have never been the subject of commercial slaughter in modern times. They are mainly hunted for their fur, especially to sell fur coats in the black market bit also there blubber can be used.
  • Whales - Hunted -  In the 20th century, whalers entered the South Ocean. After many years of hunting in the north, there wasn't enough whales any more and the Southern Ocean became the world's major whaling ground. Since Antarctic whaling began in 1904, 1.3 million whales weighting 70 million tonnes have been killed. Whale meat is eaten in Japan, their fat is used for soap and whale vomit is very expensive as a perfume.
  • Birds - Not hunted
  • Marine Life (eg. krill, fish, etc.) - Hunted -   In the late 1960s commercial fishing began in the South Atlantic, mainly by Russian Trawlers. Not only fish were taken, also krill.
    A Russain Trawler harvesting fish and krill
    They have a shorter live span, but they breed twice yearly. So they are much more productive and can sustain a higher yielding fishery. The fishing followed the same results as sealing and whaling. Fish catchers have fluctuated widely as each species was exploited. The main reason for this is that Antarctic fish are long-lived, grow slowly and take a long time to reach maturity and breed. This means they cannot be as heavily harvested as quicker growing and breeding species like krill. But harvesting krill means taking the food of many Antarctic species, as krill is at the centre of the Antarctic marine ecosystem.
This is a Japanese diagram of what the different parts of a whale is used for and how it is eaten

Polar Exploration and Roald Amundsen

Who was the first to discover the South Pole? What stories lie behind the exploration? What did they discover?



A Little Bit About Amundsen
File:Roald Amundsen Signature.svg
Amundsen's Signature
Roald Engelbregt Gravning Amundsen was born on the 16th July 1872 in Borge, Østfold in Norway. His family were ship-owners and captains in Borge, a town in between Fredrikstad and Sarpsborg. His mother pressured him to become a doctor and made him stay away from ships and maritime industry. Amundsen kept this promise, until she died when he was 21. Then, he quit his medical studies for a life at sea. He was greatly inspired by Fridtjof Nansen and had a lifelong desire to explore places like Greenland and the Poles. However, he disappeared 18th  June 1928 when he was flying a plane with Norwegian pilot Leif Dietrichson, French pilot René Guilbaud, and three more Frenchmen, looking for missing members of Nobile's crew, whose new airship Italia had crashed while returning from the North Pole. The plane was found near the Tromsø coast and it is thought that the plane crashed whilst travelling through fog, but Amundsen's body was never found. The investigation was called off in September of that year. But, in 2004 and late August 2009, unsuccessful searches were performed by the Royal Norwegian Navy.

What Happened
On the 14th December 1911, Roald Amundsen arrived in Antarctica. He arrived 5 weeks before the English team led by Captain Robert Falcon Scott, as part of the Terra Nova Expedition. Amundsen set off from Antarctica's Bay of Whales on 19th October 1911. He had 52 dogs to pull the expeditions supplies and he had 4 other people with him.

Roald Amundsen
The base Framheim, February 1911
Amundsen raced to the North Pole in 1909 but preparations for this expedition were disrupted when the rival American explorers Captain Frederick Cook and Robert E. Peary each claimed to have reached the North Pole first. Because of this, Amundsen decided to change plans, and to start the race to the South Pole. However, he wasn't sure how his supporters would react and so kept his plans a secret. Therefore, even in June 1910, many of his crew still thought that they were going to explore the Arctic. 


When they arrived there, Amundsen positioned his Antarctic base, called "Framheim", in the Bay of Whales on the Great Ice Barrier. After months of preparation and a false start that could of lead to a disaster, the team finally set out in October 1911. 

Amundsen and his team explored Antarctica and many places there are named after him:
  • The Amundsen–Scott South Pole Station is named jointly with his rival
  • Amundsen Sea, off the coast of Antarctica
  • Amundsen Glacier, in Antarctica
  • Amundsen Bay, in Antarctica
  • Mount Amundsen, in Antarctica