HOME >> BIOLOGY >> NEWS
Asteroid devastation possibly worse than feared

CORVALLIS, Ore. - Researchers say in a new report that if a huge asteroid were to hit the Earth, the catastrophic destruction it causes and even the "impact winter" that follows might only be a prelude to a different, but very deadly phase that starts later on - what they call "ultraviolet spring."

In an analysis of the secondary ecological repercussions of a major asteroid impact, scientists from Oregon State University and the British Antarctic Survey have outlined some of the residual effects of ozone depletion, acid rain and increased levels of harmful ultraviolet radiation. The results were just published in the journal Ecology Letters.

The findings are frightening. As a number of popular movies have illustrated in recent years, a big asteroid or comet impact would in fact produce enormous devastation, huge tidal waves, and a global dust cloud that would block the sun and choke the planet in icy, winter-like conditions for months. Many experts believe such conditions existed on Earth following such an impact around the Cretaceous-Tertiary, or K-T boundary, when there was a massive extinction of many animals, including the dinosaurs.

Thats pretty bad. But according to Andrew Blaustein, a professor of zoology at Oregon State University, theres more to the story. "Scientists have pretty well documented the immediate destruction of an asteroid impact and even the impact winter which its dust cloud would create," Blaustein said. "But our study suggests thats just the beginning of the ecological disaster, not the end of it."

Blaustein and colleague Charles Cockell examined an asteroid impact of a magnitude similar to the one that occurred around the K-T boundary, which is believed to have hit off the Yucatan Peninsula with a force of almost one trillion megatons.

The immediate results would be catastrophic destruction and an impact winter, with widespread death of plants and the large terrestrial animals - including humans - that most direc
'"/>

Contact: Andrew Blaustein
blaustea@bcc.orst.edu
541-737-5356
Oregon State University
8-Mar-2000


Page: 1 2 3

Related biology news :

1. Study Associates Asteroid Or Comet Impact With Extinctions In Argentina
2. Scientist Finds Asteroid Fossil That May Have Caused Global Dinosaur Extinction
3. North America Hit Hard By Asteroid Strike In Yucatan 65 Million Years Ago
4. Duke ecologist finds devastation, hope in Iraqi marshes
5. Amazonian devastation: Common sense quantified to predict disaster
6. Hormone linked to obesity plays positive role in fertility & possibly male arousal
7. OHSU researchers discover brain cell mechanism possibly linked to mental retardation
8. Dinosaur ancestors vision possibly nocturnal
9. Penn team finds molecular chaperones can halt progress of Parkinsons disease in fruit flies and possibly humans
10. Yale and University of Chicago researchers discover 40-foot crocodile fossil, possibly the largest known so far
11. Schizophrenia possibly linked to early brain development

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Asteroid devastation possibly worse than feared

(Date:8/19/2014)... world, leprosy and tuberculosis live side-by-side. Worldwide there ... year, with nearly all of them occurring where ... Bacille Calmette-Guerin, or BCG, provides only partial protection ... potent vaccine is needed to combat both diseases. ... against both diseases., In a study published in ...
(Date:8/19/2014)... Scientists at the Houston Methodist Research Institute have figured ... using a pipette -- a common laboratory tool that,s ... preliminary test results in a recent issue of the ... "Studying single cells and their unique functions has become ... faculty member Lidong Qin, Ph.D., the project,s principal investigator. ...
(Date:8/19/2014)... UTSA researchers has been awarded a nearly $40,000 grant ... (NCPTT), an office of the National Park Service (NPS) ... fund a one-year study of the energy efficiency and ... in hot, humid climates. , Radiant barriers are reflective ... reflect heat back, thereby reducing the amount of heat ...
Breaking Biology News(10 mins):New vaccine shows promise as stronger weapon against both tuberculosis and leprosy 2Moving single cells around -- accurately and cheaply 2UTSA researcher awarded $38K+ to evaluate energy efficiency options for historic homes 2UTSA researcher awarded $38K+ to evaluate energy efficiency options for historic homes 3
(Date:8/19/2014)... Aug. 19, 2014 Research ... of the "Spectroscopy Equipment and Accessories ... to their offering. This ... Equipment and Accessories in US$ Thousands by ... spectrophotometers, Raman Spectrometers, NMR-EPR Spectrometers, Near Infrared ...
(Date:8/19/2014)... , Aug. 19, 2014 /PRNewswire/ - iCo Therapeutics Inc. ... today reported results of its Oral Amphotericin B ... reservoirs.  The study, conducted by ImmuneCarta®, the immune ... vitro effectiveness of Oral Amp B in ... in individuals despite intensive treatment with antiretroviral therapy. ...
(Date:8/18/2014)... Aug. 18, 2014 /PRNewswire/ - SQI Diagnostics Inc. (TSX-V: SQD), ... technologies and products for advanced microarray diagnostics, today announced ... August 22 at 2:00 pm ET.  ... provide a brief review of SQI,s recent commercialization progress ... diagnostics industry veteran recently appointed to the Board of ...
(Date:8/18/2014)... Global HIV Infection Drug Market and Pipeline Insight is ... HIV infection and the number of deaths due to AIDS ... across the globe. It has been estimated that the death ... 2013, with the rates for children being even much lower. ... rates has been the improved access to antiretroviral drugs and ...
Breaking Biology Technology:Global Spectroscopy Equipment and Accessories - Strategic Business Report 2014 2iCo Therapeutics Announces Positive Oral Amphotericin B Study Results 2iCo Therapeutics Announces Positive Oral Amphotericin B Study Results 3SQI Diagnostics Announces Investor Conference Call with Dr. Allan Pronovost 2SQI Diagnostics Announces Investor Conference Call with Dr. Allan Pronovost 3Global HIV Infection Drug Market Overview 2Global HIV Infection Drug Market Overview 3Global HIV Infection Drug Market Overview 4
Cached News: