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:8/25/2015)... BELLEVUE, Wash. , Aug. 25, 2015 ... systems, announced today it will unveil its "Guardian S" ... at the National Tactical Officers Association Conference on August ... Guardian S is the first-ever commercially available energetically autonomous ... research and in-field trials and is protected by more ...
(Date:8/20/2015)... , Aug. 20, 2015 The wearable ... that are active and healthy. However, wearable technology ... hospital environment to help improve diagnostic capabilities and ... from the Wearable Technologies Conference 2015 , ... applications for wearables in healthcare.    ...
(Date:8/19/2015)... 19, 2015  VOXX International Corporation (Nasdaq: ... into a Definitive Agreement to purchase the assets, ... market leader EyeLock through an acquiring entity.  Upon ... controlling interest in the acquiring entity. The closing ... due diligence.  Expanding on its existing supply chain ...
Breaking Biology News(10 mins):Sarcos to Debut First-of-its-Kind Snake Robot 2Sarcos to Debut First-of-its-Kind Snake Robot 3Leaf Healthcare Releases Video from Wearable Technology Conference on New Applications for Wearables in the Hospital Environment 2Leaf Healthcare Releases Video from Wearable Technology Conference on New Applications for Wearables in the Hospital Environment 3VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 2VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 3VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 4VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 5
(Date:8/26/2015)... 2015  Platform therapeutic company Symic Biomedical, Inc. ... $1.5M Phase II SBIR grant from the National ... therapeutic agent to reduce arteriovenous fistula (AVF) failures, ... renal disease (ESRD) patients undergoing hemodialysis. The two-year ... and Digestive and Kidney Diseases (NIDDK), will allow ...
(Date:8/26/2015)... HONG KONG , Aug. 26, 2015 ... "Company"), China,s leading provider of ... and stem cell storage services, today announced that the ... Holdings Limited ("MO2"), an entity wholly owned by Mr. ... the Company, has acquired the outstanding shares (the "Shares") ...
(Date:8/26/2015)... ... August 26, 2015 , ... PRC Clinical, ... new business relationships with local sponsors in southern California. The Clinical Trial Management Expert ... development processes and regulatory pathways., , Stem Cell Meeting ...
(Date:8/25/2015)... ... August 25, 2015 , ... A new optical ... is described by University of Illinois researchers in the Journal of Biomedical ... In “ Breast cancer diagnosis using spatial light interference microscopy ,” published 20 ...
Breaking Biology Technology:Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 2Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 3China Cord Blood Corporation Receives Notice of Transactions Regarding its 7% Senior Convertible Notes Due 2017 2China Cord Blood Corporation Receives Notice of Transactions Regarding its 7% Senior Convertible Notes Due 2017 3PRC Clinical To Attend Major Industry Conferences And Meet Sponsor Companies In The San Diego Biotech Hub 2PRC Clinical To Attend Major Industry Conferences And Meet Sponsor Companies In The San Diego Biotech Hub 3New Optical Method Promises Faster, More Accurate Diagnosis of Breast Cancer 2New Optical Method Promises Faster, More Accurate Diagnosis of Breast Cancer 3New Optical Method Promises Faster, More Accurate Diagnosis of Breast Cancer 4
Cached News: