Published by iv in Antarctica, Cruise, Fishing, Georgia
South Georgia, the applied fisheries research station at King Edward Point. It is 170km long and varies in width from 2km to 40km. King Edward Point lies at the entrance to King Edward Cove. The purpose built facilities include the accommodation building, Everson House and the James Cook Laboratory.
Published by misha in Adventure, Antarctica, Climbing, Cruise, Photos, Ships, Sightseeings, Travel Stories
About 10,000 tourists every year visit Antarctica- the coldest place in the world. Only about 1,000 people live there throughout the freezing winters, however when the temperature can be as low as minus 90 Centigrade. The low temperatures in Antarctica are absolutely vital to the world’s ecosystem. As world temperatures rise and ice melts, sea levels rise and people all over the world will be affected more and more.
Continue reading Antarctica
Published by vanhal in ACTIVITIES, Antarctica, CONTINENTS, COUNTRIES, Photos, Relaxing, Sightseeings, TOPICS
Aurora is the collective name given to the photons (light) emitted by atoms, molecules and ions that have been excited by energetic charged particles (principally electrons) travelling along magnetic field lines into the Earth’s upper atmosphere. Aurora results from the interaction of the solar wind with the Earth’s magnetic field.
The amazing color displays and formations are produced by the solar wind - a stream of electrons and protons coming from the sun — as it collides with gases in the upper atmosphere. These collisions produce electrical discharges which energize atoms of oxygen and nitrogen causing the release of various colors of light. Earth’s magnetic field channels these discharges toward the poles. Variations in sunspot activity or the occurrence of so-called ‘coronal holes’ can often considerably enhance the auroral discharge adding to the intensity and duration of the displays.
The global distribution of auroral activity is an oval around the magnetic poles in both hemispheres. As the level of magnetic disturbance of the Earth’s magnetic field increases, the oval of auroral activity expands equatorward. Known as ‘Aurora borealis’ in the north, auroras occur in the upper atmosphere of both poles and are occasionally visible from middle latitudes as a dark red glow near the poleward horizon.
Continue reading Colours of Aurora in Antarctica
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