News tagged with ocean floor

Bacteria alive (more or less) in 86-million-year-old seabed clay

(Phys.org) -- A new study by scientists from Denmark and Germany has found live bacteria trapped in red clay deposited on the ocean floor some 86 million years ago. The bacteria use miniscule amounts of oxygen ...

Biology / Cell & Microbiology

created May 18, 2012 | popularity 4.5 / 5 (15) | comments 10 | with audio podcast report

Thawing permafrost 50 million years ago led to extreme global warming events

In a new study reported in Nature, climate scientist Rob DeConto of the University of Massachusetts Amherst and colleagues elsewhere propose a simple new mechanism to explain the source of carbon that fed a ...

Space & Earth / Earth Sciences

created Apr 04, 2012 | popularity 4.3 / 5 (28) | comments 47 | with audio podcast

New exploration shows parts of North Atlantic seabed were once above sea level

(PhysOrg.com) -- Using data obtained from oil searching contractors, researchers have discovered that parts of what is now the ocean floor off the northern coast of Scotland, were at one time raised up enough ...

Space & Earth / Earth Sciences

created Jul 12, 2011 | popularity 4.6 / 5 (11) | comments 5 | with audio podcast report

Unusual earthquake gave Japan tsunami extra punch

The magnitude 9 earthquake and resulting tsunami that struck Japan on March 11 were like a one-two punch – first violently shaking, then swamping the islands – causing tens of thousands of deaths ...

Space & Earth / Earth Sciences

created May 24, 2011 | popularity 5 / 5 (8) | comments 2 | with audio podcast

Geophysicists claim conventional understanding of Earth's deep water cycle needs revision

A popular view among geophysicists is that large amounts of water are carried from the oceans to the deep mantle in "subduction zones," which are boundaries where the Earth's crustal plates converge, with ...

Space & Earth / Earth Sciences

created Oct 18, 2010 | popularity 4.9 / 5 (17) | comments 3 | with audio podcast

Triple whammy triggered Samoa tsunami (Update 2)

A tsunami that hit the Pacific islands of Samoa and Tonga last year was generated by three earthquakes unleashed by a seismic mechanism that has never been observed before, scientists said on Wednesday.

Space & Earth / Earth Sciences

created Aug 18, 2010 | popularity 4 / 5 (14) | comments 1 | with audio podcast

Small fish exploits forbidding environment

Jellyfish moved into the oceans off the coast of southwest Africa when the sardine population crashed. Now another small fish is living in the oxygen-depleted zone part-time and turning the once ecologically ...

Biology / Plants & Animals

created Jul 15, 2010 | popularity 4.9 / 5 (11) | comments 0 | with audio podcast

New insights into volcanic activity on the ocean floor

New research reveals that when two parts of the Earth's crust break apart, this does not always cause massive volcanic eruptions. The study, published today in the journal Nature, explains why some parts ...

Space & Earth / Earth Sciences

created Jun 16, 2010 | popularity 3.9 / 5 (7) | comments 1 | with audio podcast

Arctic ice at low point compared to recent geologic history

Less ice covers the Arctic today than at any time in recent geologic history. That's the conclusion of an international group of researchers, who have compiled the first comprehensive history of Arctic ice.

Space & Earth / Earth Sciences

created Jun 02, 2010 | popularity 3.6 / 5 (23) | comments 8 | with audio podcast

China looks to 'combustible ice' as a fuel source

(PhysOrg.com) -- Buried below the tundra of China’s Qinghai-Tibet Plateau is a type of frozen natural gas containing methane and ice crystals that could supply energy to China for 90 years. China discovered ...

Technology / Energy & Green Tech

created Mar 12, 2010 | popularity 4.7 / 5 (23) | comments 13 | with audio podcast report

Earth's early ocean cooled more than a billion years earlier than thought (w/ Video)

(PhysOrg.com) -- The scalding-hot sea that supposedly covered the early Earth may in fact never have existed, according to a new study by Stanford University researchers who analyzed isotope ratios in 3.4 ...

Space & Earth / Earth Sciences

created Nov 11, 2009 | popularity 4.3 / 5 (12) | comments 1

Water in Earth's mantle may be associated with subduction

A team of scientists from Oregon State University has created the first global three-dimensional map of electrical conductivity in the Earth's mantle and their model suggests that that enhanced conductivity ...

Space & Earth / Earth Sciences

created Aug 19, 2009 | popularity 4.3 / 5 (10) | comments 3

In Ocean's Depths, Heat-Loving 'Extremophile' Evolves a Strange Molecular Trick

(PhysOrg.com) -- Making its home near extreme temperatures of thermal vents on the ocean floor, the organism Methanopyrus kandleri harbors a molecular secret that intrigues evolutionary biologists and even ...

Chemistry / Biochemistry

created Apr 30, 2009 | popularity 5 / 5 (12) | comments 3

Decline of carbon-dioxide-gobbling plankton coincided with ancient global cooling

(PhysOrg.com) -- The evolutionary history of diatoms -- abundant oceanic plankton that remove billions of tons of carbon dioxide from the air each year -- needs to be rewritten, according to a new Cornell ...

Biology /

created Jan 08, 2009 | popularity 4.5 / 5 (13) | comments 1

Mars Express radar gives strong evidence for former Mars ocean

(PhysOrg.com) -- ESA's Mars Express has returned strong evidence for an ocean once covering part of Mars. Using radar, it has detected sediments reminiscent of an ocean floor within the boundaries of previously ...

Space & Earth / Space Exploration

created Feb 07, 2012 | popularity 4.3 / 5 (7) | comments 3 | with audio podcast

Seabed

The seabed (also known as the seafloor, sea floor, or ocean floor) is the bottom of the ocean. At the bottom of the continental slope is the continental rise, which is caused by sediment cascading down the continental slope. The seabed has been explored by submersibles such as Alvin and, to some extent, scuba divers with special apparatuses. The process that continually adds new material to the ocean floor is seafloor spreading and the continental slope.

For more information about Seabed, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.