Oceanography (compound of the Greek words ÏκεανÏÏ meaning "ocean" and γÏάÏÏ meaning "to write"), also called oceanology or marine science, cause the cat arth science]] that studies the ocean. It covers a wide range of topics, including marine organisms and ecosystem dynamics; ocean currents, waves, and geophysical fluid dynamics; plate tectonics and the geology of the sea floor; and fluxes of various chemical substances and physical properties within the ocean and across its boundaries. These diverse topics reflect multiple disciplines that oceanographers blend to further knowledge of the world ocean and understanding of processes within it: biology, chemistry, geology, meteorology, and physics as well as geography.
NASA has, for the first time, released a global map of ocean salinity. The first thing that popped up for me was the pulse of freshwater gushing from the Amazon, but other major features are worth noticing. An invisible seam divides the salty Arabian Sea from the fresher waters of the Bay of Bengal and [...]
After it was first cast out to sea less than a year ago from San Francisco’s bay, the PacX Wave Glider, also known as Papa Mau, finally reached the end of its epic journey after it reached Queensland, Australia setting a new world record for the longest distance traveled by an autonomous vehicle. PacX swam over [...]
The world’s oceans are teeming with life, a new census estimating almost 1 million species out there; but marine life is declining, with the main causes being overfishing, ocean acidification and coastal damage. Avoiding a crisis The new numbers are just estimates, but they are much lower than previous studies, which put the number of [...]
This weekend four unmanned robot vehicles set out to cross the Pacific Ocean, for the longest voyage of this kind so far attempted. During their 300 days trek, the Wave Glider crafts will gather immense data regarding composition and quality of sea water, which will provide researchers with invaluable data regarding the current status of the ocean’s health. [...]
The mimic octopus, Thaumoctopus mimicus is a species of octopus that grows up to 60 cm (2 feet) in length and is naturally colored with brown and white stripes and spots. So what’s so special about it? The mimic octopus can literally mimic the physical appearance and movement of fifteen different species, that we know of [...]
Mark Benfield from Louisiana State University, Baton Rouge was undertaking a survey when he spotted this amazing oarfish at about 10 meters long. The fish is one of the longest in the world, and it’s general aspect resembles that of a serpent, so it’s possible it lies at the basis of some sea serpent myths. [...]
I was surprised to talk to a bunch of people today and find out they didn’t know about this, so I figured this is definitely something worth knowing. Here’s the deal. There’s a whole lot of garbage floating around; a whole lot ! Some are above the surface, some are below. What happens is they [...]
Blue whales are not only the biggest living creatures in the world right now, but the biggest ever to have ‘walked’ the face of the earth; they’re also the loudest for that matter. After recovering from near extinction in the beginning of the 20th century, blue whales are finally getting a part of the respect [...]
According to the Australian Antarctic Division, at least a hundred Antarctic icebergs are currently drifting towards New Zealand at a speed that alarmed local authorities as well as specialists from all over the world. A glaciologist from inside the organization said that they already passed the Auckland islands and are currently heading for the main [...]
A new study has shown that not even a square meter of the world’s oceans has been left untouched by human activities. Oceansystems face probably the largest of threats from humans including overfishing, pollution, and rising ocean temperatures and ocean acidification caused by global warming. The study has been led by an international team of [...]
Thu, Feb 28, 2013
0 Comments