Tag: "eruptions" at biology news
Where the sage-grouse roam
...est. Shaped by climate, fire, floods and volcanic eruptions
since the Pleistocene era, the sagebrush biome now faces the impacts of increased cultivation, urbanization, exotic plant species, and altered fire patterns. In a session to be presented at the ESA 89th Annual Meeting entitled "Fighting the Odds: Th...
New version of premier global climate model released
...te phenomena ranging from the effect that volcanic eruptions
have on temperature patterns to the impact of shifting sea ice on sunlight absorbed by the oceans. Climate models work by solving mathematical formulas, which represent the chemical and physical processes that drive Earth's climate, for thousands of...
Volcanic soils yield new clues about the emergence of powerful chiefdoms in Hawaii
...searchers conclude that relatively recent volcanic eruptions
on Maui and the island of Hawai'i produced a handf...50,000 to 400,000 years ago by a series of violent eruptions
that spewed out rock rich in phosphorus, calcium and other minerals essential for plant growth. To f...
First DFG research conference in the USA
...ll as the consequences of earthquakes and volcanic eruptions
for the biosphere. The conference will be sponsored by the National Science Foundation (NSF), the American Association for the Advancement of Science (AAAS) and the American Geological Institute (AGI). The conference will take place at the AAAS Confe...
November science picks!
...eek of October 20th, and a series of massive solar eruptions
ensued hurling billions of tons of plasma (ionized...greater warning before unexpected and catastrophic eruptions
strike. More thorough monitoring of the world's volcanoes with InSAR (Interferometric Synthetic Aper...
Princeton paleontologist produces evidence for new theory on dinosaur extinction
...an a single event, an intensive period of volcanic eruptions
as well as a series of asteroid impacts are likely... are now studying the effects of powerful volcanic eruptions
that began more than 500,000 years before the K/T boundary and caused a period of global warming. At...
NSF news tips - September 22, 2003
... NSF has funded his studies of magma flow prior to eruptions
(EAR-0207471) and mantle dynamics in Earth-like planets (EAR-0124972), among others. Sarah Tishkoff of the University of Maryland is an anthropologist whose NSF award allowed her to use the tools of molecular genetics to examine genetic variation a...
Why we see red when looking at ocean plants
...n linked to extraterrestrial collisions or earthly eruptions
or explosions. "Plants on land are green, and they inherited the cell components that gave them a green color about 400 million years ago," Falkowski said. "But most of plants or phytoplankton in the ocean are red - they inherited their pigments abou...
Is this what killed the dinosaurs?
...rilled deep into sediments on the ocean floor. The eruptions
that were responsible for these two extinction eve...s an area of some 1,000 kilometres diameter. These eruptions
last between one and two million years and more than one million cubic kilometres of lava can be eru...
Trade Center debris pile was a chemical factory, says new study
...center collapse, 1991 Gulf War oil fires, volcanic eruptions
and global dust storms, and has most recently finished a massive 21-site study of Asian aerosols for the National Science Foundation. The new study reinforces and extends conclusions that DELTA Group reached in February 2002 in what is still the mos...
Science Picksleads, feeds and story seeds (July 2003)
... summer of 1992, when three closely spaced similar eruptions
occurred at Crater Peak, scientists at the Alaska ... the Gulf of Alaska. The greatest hazard posed by eruptions
is airborne ash.. Volcanic ash consists of tiny jagged particles of rocks, minerals and natural glas...
Pox to pimples; study says acne-like outbreak not vaccinia
...ous, reaction to the vaccine: folliculitis, benign eruptions
like pimples. "We wanted to see if this eruption was common in adults after vaccination, and if it could be mistaken for general vaccinia," Talbot said. The paper, he said, was an effort to lessen anxiety and provide some clarity for physicians who m...
Scientists returning to field of eerie thermal spires
...oor 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. Heat generated by chemical changes in the rocks appears to drive venting: seawater permeates deeply into the ...
15-foot hypodermic needles provide evidence for vast oceanic crustal biosphere
...ters. 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 tiny area of the seafloor. Far more of the seafloor is tens of millions of ye...
January GEOLOGY and GSA TODAY media highlights
...afic magma thought to have triggered the explosive eruptions
of this volcano. GSA TODAY Magma transport and coupling between deformation and magmatism in the continental lithosphere. Keith A. Klepeis, Department of Geology, University of Vermont, Burlington, Vermont 05405-0122, USA, firstname.lastname@example.org ;...
New CU-NASA research belies previous idea that Mars was once warm, wet planet
...hane -- which can be created naturally by volcanic eruptions
or produced by primitive life -- was present in the Martian atmosphere. But even CO2 and methane combined would not be enough to warm the planet as greenhouse gases did on Earth and Venus in their early histories, Toon said. "Hypotheses of a warm, w...
Insect infestation models may shed light on insect and disease outbreaks
...tists how to model a variety of disease and insect eruptions
that rely on a combination of enemy, host and spatial movement to decimate populations, according to a team of ecologists. "We use theoretical models to help understand the spatial component in these outbreaks and to predict how spatial spread occurs...
New study of Ground Zero air shows indoor spaces can be cleaned; diesel pollution remains a threat
...erosols from the 1991 Gulf War oil fires, volcanic eruptions
and global dust storms. In February, the DELTA Group released what is still the most thorough analysis of the dust and smoke blown through lower Manhattan after the trade center collapse. That analysis found unprecedented clouds of very fine particl...
Large volcanic eruptions affect the 'greener greenhouse'
...icles thrust into the atmosphere by large volcanic eruptions
slow plant growth, but still enhance the ability of lands to act as a sink for carbon, as reported in the May 31st issue of Science. Last September, researchers used satellite data and confirmed that plant life has been growing more vigorously since...
Los Alamos researcher conducts volcanic voyeurism
...g system for people who live near volcanoes, whose eruptions
have killed tens of thousands of people and caused millions of dollars of property damage in just the last three decades alone. "Remote sensing of volcanoes as an early-warning method shows a lot of promise, but you have to be aware of its limitation...