If a GRB wipes out the ozone layer...

[willpittenger]

How long would it take to recover? (A recent thread got me thinking about this.) <div class="Discussion_UserSignature"> <hr style="margin-top:0.5em;margin-bottom:0.5em" />Will Pittenger<hr style="margin-top:0.5em;margin-bottom:0.5em" />Add this user box to your Wikipedia User Page to show your support for the SDC forums: <div style="margin-left:1em">{{User:Will Pittenger/User Boxes/Space.com Account}}</div> </div>

 

[enigma10]

No one would be around to tell. In an attempt to answer your question though, it is known that the current ozone holes will completely heal by 2065.<br /><br />http://www.washingtonpost.com/wp-dyn/content/article/2006/08/18/AR2006081800978.html <div class="Discussion_UserSignature"> <em>"<font color="#333399">An organism at war with itself is a doomed organism." - Carl Sagan</font></em> </div>

 

[3488]

I wonder if there is any evidence of an event like this in the fossil record??<br /><br />Our Sun (bringing the rest of the solar system with it) orbits the centre of the Milky Way about once every 225 million years. <br /><br />So since the formation of the Earth & Solar System, our planet has been dragged around the galactic centre nearly 21 times!!! <br /><br />Since the Cambrian times, when life literally started to proliferate we have been around nearly three times. <br /><br />I find it quite difficult to beleive that in all of that time, our solar system has not been close to blue supergiants, neutron stars, black holes, supernovas, etc. <br /><br />At the end of the Cretaceous period, when the Dinosaurs, along with 76% of all other living things where made extinct, the Ozone Layer may have been destroyed by the comet impact & by clorine from the Deccan Lava Traps eruptions!!<br /><br />Andrew Brown. <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>

 

[3488]

Just Realised. I have become a STAR!!!!!!!! Stardom at last!!!<br /><br />Andrew Brown. <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>

 

[ctrlaltdel]

I'd imagine that the chances of the solar system being near 100ly of a supernova is very slim - especially at the distance we're orbiting from the galactic core.

 

[docm]

Congrats Andy <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> </div>

 

[dragon04]

Congrats on initiating fusion. <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> <em>"2012.. Year of the Dragon!! Get on the Dragon Wagon!".</em> </div>

 

[MeteorWayne]

Now all he has to do is double his post count, then we won't have to wait for approval on his pix! <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[alokmohan]

http://www.astronomy.com/asy/default.aspx?c=a&id=6117Amateur finds GRB afterglow <br />The American Association of Variable Star Observers (AAVSO) announced the discovery of a gamma-ray burst optical afterglow by Finnish amateur astronomer Arto Oksanen October 10. Oksanen, a long-time AAVSO variable star observer and member of the AAVSO Council from Muurame, Finland, was the first to find the optical counterpart of GRB 071010B, a gamma-ray burst detected

 

[shadow735]

can man artaficially create ozone and repair the ozone layer? <div class="Discussion_UserSignature"> </div>

 

[alokmohan]

Will that help?What you mean by repair?

 

[shadow735]

I meant as in make ozone torepair the holes in the ozone layer <div class="Discussion_UserSignature"> </div>

 

[qso1]

Congratulations, now you have to deal with the trappings and fame, Lol. <div class="Discussion_UserSignature"> <p><strong>My borrowed quote for the time being:</strong></p><p><em>There are three kinds of people in life. Those who make it happen, those who watch it happen...and those who do not know what happened.</em></p> </div>

 

[qso1]

shadow735:<br />can man artaficially create ozone and repair the ozone layer?<br /><br />Me:<br />We may be able to create ozone, don't know for sure but I'm almost 100% (99.9894% Lol) certain we cannot repair ozone holes. Thats probably a process that requires more than just the ability to create ozone, not to mention the sheer amount of ozone that would be required to fill an ozone hole the size of the one over antarctica. An amount that is probably beyond any ozone production capability we may have. <div class="Discussion_UserSignature"> <p><strong>My borrowed quote for the time being:</strong></p><p><em>There are three kinds of people in life. Those who make it happen, those who watch it happen...and those who do not know what happened.</em></p> </div>

 

[SlyCoopersButt]

Seems a little thought provoking though. If some scientists think it's possible to restore mars atmosphere, Then how much more plausable is the Ozone here on earth? <div class="Discussion_UserSignature"> </div>