If you look at a map of the world you will see that the various oceans make up a significant proportion of the landscape. They are defined as a continuous body of water the circles the earth or land mass. These features are divided into principal demarcations. At the moment the globe is dominated by no less than five oceanic divisions including the Pacific, the Indian, the Atlantic, the Southern and the Arctic areas. Some of these oceans are consolidated into one mass but in reality when they are two separate waterways.
Some Statistics Concerning Oceans
It is estimated that oceans make up about 71% of the earth surface. That means that they cover an area mass that runs as follows: ~3.6 by 10 8 km 2. About 50% of this area is three thousand meters deep. These work out at a depth of about nine thousand and eight hundred feet. The average figures for oceanic salinity stand at about thirty five parts per a thousand PPT. This is a salinity level of 3.5%. Almost all the seawater that we have at the moment has a salinity range of 30-38 per PPT. According to research, these oceans hold about two hundred and thirty thousand marine species.
How Oceans Separate The World
Without oceans, the earth land mass would be one continuous setting. However each of these large water masses separates different continents. For example the Pacific separates Australia from the Asian and American continents. The Atlantic separates Eurasia and Africa from America. The Indian separates Australia from Africa. On the other hand the Southern parts are the extensions of all the other oceans. It also encircles the Antarctica region. It is possible to have further subdivisions within the Pacific. For example the equator divides the North from the South.
Classifying The Oceans Down To Their Smallest Units
For purposes of describing their existence, oceans are broken down into gulfs, seas, bays and straights. Sometimes they make their way inland and create enclaves of water masses. From a geological point of view, these water masses can be seen as an oceanic crust that is covered by water. It consists of a thin layer of solid volcanic basalt. It is estimated that continental crust for oceans is thicker than this crust but certainly less dense. These water masses were formed due to collusion between Laurasia and Cimmeria in antiquity.
Oceans And The Biosphere
Geological studies indicate that oceans have a significant impact on the biosphere. Through evaporation, they can affect the water cycle. This then has important implications for the level of rainfall, especially in the coastal areas. At a time when the world is waking up to the real dangers of global warming, it is imperative that these water masses are protected from some of the excess that forms modern life. Oceans can then ensure that global temperatures do not go beyond the acceptable levels for human life. The alternative is a complete catastrophe Oceans might change the face of the earth.
Fukushima: Radioactivity in the Pacific Ocean, Diluted, But Far from Harmless Center for Research on Globalization ?With contaminated water from Japan's crippled Fukushima nuclear complex continuing to pour into the Pacific, scientists are concerned about how that radioactivity might affect marine life. Although the ocean's capacity to dilute radiation is huge ... Hidden gov`t forecast shows Fukushima contamination spread throughout ...Mathaba.Net
Washington Post 'The Last Ocean' Washington Post John Weller, a conservation photographer and founder of Last Ocean, an advocacy group for the conservation of the Ross Sea, has a new photo book, ?The Last Ocean: Antarctica's Ross Sea Project.? Published by Rizzoli New York, it is a visual journey ...
NOAA is targeted on the conditions of the oceans and therefore the atmosphere.
The reef Task Force was established to raised preserve and defend reef ecosystems.
Organization that works solely to unite communities to guard our planet's coral reefs.
Help shield the last healthy, undisturbed places within the ocean. we will find out how to assist healthy reefs thrive, facilitate unhealthy reefs recover, and higher preserve this unbelievable underwater world.
National Geographic education schemes supports the marine recreation community through a shared goal of raising public awareness concerning ocean conservation and galvanizing folks to assist defend the important natural resources that the ocean provides.
Captain Jacques-Yves left his mark forever on the world and therefore the oceans. explorer aboard Calypso to explore the globe, his life and work, was a serious player within the environmental movement. Jacques impressed Maine to be told regarding our underwater world at AN early age. Those recollections fuel this website and my diving expeditions.
My travels to date have taken me throughout much of the Caribbean to many wrecks & reef systems. While I have more exploration here in the future, I'm going to divert my travels for now to the far Pacific. I have included some of my best Caribbean dive photos here.
If you examine a map of the globe you may see that the assorted oceans form up a major...
One of the foremost spectacular sights of the ocean is reef. it's shaped a traveller base for several
The seabirds square measure creatures that have tailored to the marine existence...
The National Geographic Society's fresh initiative may be a multi-year international effort to inspire and empower people and communities to conserve fresh and preserve the extraordinary diversity of life that rivers, lakes, and wetlands sustain.
It is never to late to start out diving; if that's not possible a minimum of strive skin-dive. search for sites with coral reefs right off positive. Bonaire is that the best at school for shore diving, then take a visit to Curacao or island.