Tag: "seafloor" at biology news
Methane Deep In Ocean Crust Could Feed Chemical-Hungry Microorganisms
...f nutrients needed by microorganisms living at the seafloor
and, possibly, deep within the earth's crust. Mi...lthough the basalts found nearly everywhere on the seafloor
come from the same submarine chambers, Kelley says that the fluids in layer-three rock are very diff...
Summary Of USGS Presentations And Activities, AAAS, 1998
...aste. USGS studies involve theuse of sophisticated seafloor
mapping and sampling equipment to provide anew, detailed regional map of sea floor characteristics offshore of the NewYork-New Jersey metropolitan area. Information from this USGS studyprovides a regional framework for predicting the movement and lon...
Highlighting USGS Science At AGU
... YOTO topics. Tuesday and Wednesday ONLY: The USGS seafloor
mapping group from Woods Hole, MA., will demonstrate instrumentation used to acquire data from the seafloor
along the East Coast of the United States and show how a real-time processing system used on board s...
Destructive Algae Overtaking Mediterranean Waters
...l species of algae is carpeting the Mediterranean seafloor
in an invasion that has crossed the borders of fi...depth of about 150 feet. A single square yard of seafloor
can be matted with 700 feet of runners from which emerge thousands of shaggy, thick leaves. This ex...
Ancient Antarctic Environment Rocked By Volcanic Eruptions
...ached a depth of approximately110 meters below the seafloor
when this unexpected evidence of volcanic activity...d within muddy sands, indicatinga relatively quiet seafloor
with occasional weak currents before and after theeruptions. This relatively quiet environment, how...
Study shows that hydrothermal vents release mercury
...vels ofmercury. The mercury probably came from the seafloor
vents. It is also unclear how many such springs there are worldwide and howmuch mercury lies on the seafloor. "But it could be locally significant," warnsGarrett....
Powering the seafloor
MICROORGANISMS in the seafloor
may soon be producing an unlimited supply of elect... Bugs living in seawater, or on the top layer of seafloor
sediments, use oxygen to break down organic matter, releasing energy as they go. Those that live fur...
Unusual mussels may use whale bones en route to hot sea-floor vents
.... Smith's team studied five whale skeletons on the seafloor
off Southern California, including three carcasses sunk intentionally after the whales died from natural causes. The carcasses were revisited by manned submersible over a number of years to study the communities of animals on the bones and bacteria t...
Seafloor off Mid-Atlantic coast highly charged with gas
...umstance causes it to escape, blowing holes in the seafloor
to form these large pockmark features we thought were cracks." In a paper published in the journal Geology days before their May 7 departure for the Mid-Atlantic coast, Driscoll and colleagues Jeffrey Weissel of the Lamont-Doherty Earth Observatory...
December Geology and GSA Today highlights
...Afar depression: Implications for fault growth and seafloor
spreading. Anupma Gupta and Christopher H. Scholz There aren't many places in the world where you can watch an ocean basin form, which is why East Africa has captured the attention of many geologists. Using new high-resolution satellite maps of to...
Huge new hydrothermal vent system found on seafloor
... have been uplifted several miles from beneath the seafloor
along large faults that expose them at the surface of the mountain. "As so often happens, we were pursuing one set of questions concerning building of the mountain and we stumbled onto a very important new discovery," said Donna Blackman, a...
Antarctic sea urchin shows amazing energy-efficiency in nature's deep freeze
...es extending from its round shell. It lives on the seafloor
and uses its spines and sucker-tipped tube feet to move about. Baby sea urchins are spawned during the summer months and take about a year to develop from embryo to larva to juvenile a stage that is a miniature version of the adult. To collect...
Scientists determine how chemistry keeps weird worms "out of hot water" at steaming deep-sea vents
...ottest" animal on Earth. The tubeworm lives on the seafloor
near hydrothermal vents. It has no eyes, mouth or stomach. Instead, this worm relies on the billions of bacteria that live inside it to make food. Using the analyzer in a tubeworm colony, the scientists confirmed that this animal resides in waters up...
Researchers pinpoint how tubeworm babies are dispersed to colonize new vent sites
...ddle of the Pacific Ocean, plunge two miles to the seafloor
near an underwater volcano,release a strawberry seed in the pitch darkness, and figure out where it will land. That sort of sums up the task that faced University of Delaware marine biochemist Adam Marsh and his colleagues in their quest to deter...
International scientists probe unsolved puzzles of the Earth and beyond at "Earth System Processes"
...nosity, increased continental area, and decline in seafloor
spreading. He predicts the extension of Earths current biosphere until catastrophic warming terminates complex life in approximately 1 Gyr. David W. Schwartzman, Department of Biology, Howard University, addresses the question, Does life drive disequ...
Analysis of impact studies reveals how bottom fishing affects seafloor denizens
...e studies on the effects of fishing disturbance on seafloor
organisms around the world. The study reveals ...ict the outcome of fishing activities for existing seafloor
communities, we are often unable to determine the original composition of the fauna because data gat...
August media highlights GEOLOGY and GSA TODAY
...sulfur--were leached from volcanic rocks below the seafloor
by heated seawater, and that the rocks were oxidized during the process. It seems that three-billion-year-old seawater was locally sulfate bearingperhaps more like modern seawater than generally thought. Paleoclimatic significance of Phanerozoic reef...
Electronic tags reveal transatlantic migrations and breeding grounds of Atlantic bluefin tuna
...is near the Flemish Cap a section of the Atlantic seafloor
just east of the Grand Banks off Canadas Newfoundland. Researchers also reported that the western-tagged bluefin travel to distinct spawning grounds in the Gulf of Mexico or the Eastern Mediterranean. "The results indicate western-tagged bluefin a...
Early critters in microbial mats: Evolution or just a strange environment?
...nd now usually non-existent) microbial-mat-covered seafloor
environments that were typical for the Cambrian. So, rather than the animals being particularly unusual, we are saying that the environments were!" explained Bottjer. "And, being evolutionarily well-adapted to an unusual environment gives an animal a...
Deep-ocean research program office established at Penn State
..., emphasizing the interactions between the complex seafloor
and subseafloor ecosystems as well as the geological processes that support them. "With RIDGE 2000, we plan an increased commitment to large-scale, interdisciplinary science," Fisher says. "We will involve all kinds of scientists at one site at th...
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