Tag: "ridge" at biology news
New hydrothermal vents discovered as 'South Pacific Odyssey' research begins
...cesses that connect Earth's deep interior to ocean ridge
volcanoes and the biological communities they support in the complete absence of sunlight. The Lau Basin is flanked by two underwater mountain ridges that sit roughly between Fiji in the west and the Kingdom of Tonga in the east; the ridges run sou...
Nurseries in the deep sea
MOSS LANDING, California--Exploring a deep-sea ridge
off Northern California, scientists at the Montere...earn more about why these animals aggregate on the ridge
and use this information to narrow our search for other important nurseries in the deep sea."...
The area where carcinogens settle may be a key factor in developing lung cancer
...s. A new study suggests that a specific site the ridge
separating the two halves of the bronchial airway ...om cigarette smoke at the airway's carinas -- the ridge
separating the openings of the right and left main bronchi at their junction with the trachea -- is ...
Scientists returning to field of eerie thermal spires
...chambers. This is unlike most systems at mid-ocean ridge
spreading centers. That's where very young seafloor is created often dramatically during volcanic eruptions and vented water can be as hot as 700 F. Lost City is nine miles from the nearest spreading center and sits on 1.5 million-year-old crust. ...
15-foot hypodermic needles provide evidence for vast oceanic crustal biosphere
...areas where seafloor is being created at mid-ocean ridge
spreading centers. These areas are subject to frequent volcanic eruptions and can have fields of hydrothermal vents that pour superheated water as hot as 750 F into the oceans. As visually spectacular as such areas can be, they represent only a tin...
...nsity of food seems to be lower because there is a ridge
of less edible sagebrush in between. The moose is averaging over areas with high and low grass density while the mouse is only counting areas of high density. This is why large animals have bigger home ranges than we would expect based on their met...
Extreme climate variance sped extinction of local butterfly populations, researchers say
...ut now the biologists won't have to muck about the ridge
counting insects as they have for decades to characterize rates of births, deaths, immigrations and emigrations. The last two Jasper Ridge populations went extinct in 1991 and 1998. Examining 70 years of rainfall and population data, the researchers ...
April GEOLOGY and GSA TODAY media highlights
...tarctic plate within a 100-kilometer region of the ridge
known as the Andrew Bain Fracture Zone. They also show why the exact location of the plate boundary remained a mystery for so long. The rate of movement between the African plates is very slow--only about two millimeters per year. Seafloor spreadi...
Preserving pine's genetic heritage
...6-7 km to the furthest trees down a sloping, rocky ridge
to an altitude of 500m. The worst bit was carrying the pine cones back to camp!...
January media highlights: GEOLOGY and GSA TODAY
... strike-slip seismic zone offsetting two mid-ocean ridge
segments. However, the authors define a new class of oceanic transform boundaries, with broad, complex multifault zones of deformation, similar to some continental strike-slip systems. Examples are the 750-km-long, 120-km-wide Andrew Bain transform o...
December Media Mighlights: GEOLOGY and GSA TODAY
...cedented in duration and magnitude for a mid-ocean ridge
eruption and indicates a negative power-law relationship between these parameters and spreading rate. The triggering of large events on the bounding-wall faults suggests that magma for this eruption may have been tapped directly from the mantle. H...
Healy researchers make a series of striking discoveries about Arctic Ocean
...the Gakkel Ridge. Because the southern end of the ridge
is spreading relatively quickly and the northern e...pleased to discover that they were able to map the ridge
in great detail from the Healy because the vessel was much quieter when breaking ice than expected. ...
Ocean frontier revealed: scientists to describe unexpected discoveries of arctic research cruise
...in the frigid Arctic waters; used sonar to map the ridge
at a level of detail that was thought impossible aboard a working icebreaker; and was able to sample the deep interior of the earth rising directly to the seafloor as solid rock through a "great gash" dotted with volcanoes. "This incredibly successfu...
Deep-ocean research program office established at Penn State
A program designed to study the mid-ocean ridge
system and enhance understanding of the relationsh...rgy transfer within the globe-encircling mid-ocean ridge
system. The mid-ocean ridge
system marks the boundary along which Earth's major tectonic plates for...
Researchers pinpoint how tubeworm babies are dispersed to colonize new vent sites
...are occurrence on the ocean floor. "Even at the ridge
segments where there is volcanic activity, a distance of 100 to 200 kilometers may separate areas of active venting," he notes. "Thus, the tubeworm larvae's dispersal range tells us that, on average, they do not routinely travel between active vent s...
UC Berkeley chemists detail secrets of ionization, reasons behind water's central role in chemistry of life
...the peaks. To find the easiest trajectory over the ridge
to the desired valley, it's quicker to throw ropes over the passes and, learning from your mistakes, narrow the possibilities, than to randomly try all possible ways to scale the ridges. "After you have thrown these ropes successfully, you march alon...
Huge new hydrothermal vent system found on seafloor
...ls and silica, in contrast to most other mid-ocean ridge
hot spring deposits which are formed by iron and s... and tube worms, which typify most other mid-ocean ridge
hydrothermal environments, appear to be absent in this field. The Lost City Field was discov...
June 'Geology' and 'GSA Today' highlights
...than was previously thought. A prominent submarine ridge
that extends eastward from the island, just north of the city of Hilo, was not built by lofty Mauna Kea volcano but instead by older Kohala volcano, which was later overlapped and partly buried by Mauna Kea. Similar overlaps are suspected among sever...
Scientists gather in Oregon to decide next steps of mid-ocean ridge exploration
...eology, chemistry and biology of Earth's mid-ocean ridge
system. The conference, to be held at the ... of the energy transferwithin the global mid-ocean ridge
system," says David Epp of NSF's marinegeology and geophysics program, which funds RIDGE. T...
First North Americans Had Chance To Be Avid Birders
...f these caves for anafternoon. The whole limestone ridge
system where they are located serves, eventoday, as a perfect vantage point, overlooking the broadening of the BluefishValley, and if it was a rainy day, or a bad blizzard, or a freak snowstorm, theycould have been used as temporary shelters," says C...