[ RadSafe ] Mars Radiation Won't Harm Astronauts, Curiosity Rover Finds

Dan McCarn hotgreenchile at gmail.com
Sun Nov 18 17:59:54 CST 2012 

Hi -

I've always wondered about that.  Are these fairly regular magnetic
reversal events caused by something in the core? Or does the magnetic field
of the Earth reflect the magnetic field of the sun?

But many think that the Earth's magnetic field does not disappear during
reversal, but behaves in a more chaotic way until N-S. or S-N orientation
is achieved.  Thus, extinction events are unlikely.  Another hypothesis is
that major impacts might trigger magnetic reversal, but there is no
evidence of reversal during the K-T unconformity event.  There is thought
that the magnetic field of Mars was lost during a series of episodic
impacts. Plate tectonism seems to be absent on the Moon or Mars for several
billion years, and the volcanic activity of Mars has declined significantly
since 3-4 billion years ago suggesting that the "dynamo" in Mar's core
ceased to function at that time.

Dan ii


On Sun, Nov 18, 2012 at 2:48 PM, <JPreisig at aol.com> wrote:

> Hmmmm,
>
>       Perhaps the Earth will not be protected from  Cosmic Radiation, Solar
> Events etc. the next time
> the Earth's magnetic pole "flips" in polarity.  Will this cause mass
> extinctions????
> Something to think about...
>
>      Joe Preisig
>
>
>
>
> In a message dated 11/18/2012 2:27:49 P.M. Eastern Standard Time,
> hotgreenchile at gmail.com writes:
>
> Hi  David:
>
> Mars does have an iron-nickel core but it has lost it's magnetic  field up
> to 3-4 billion years ago billion or so years ago, thus no  protection from
> CME events.
>
> Earth may be luckier in this regard  since the early history of the earth
> included a massive impact with a  planet-sized body, creating the moon and
> possibly adding significant iron  for the core to keep us warm and
> magnetic...
>
> Dan ii
>
>
> On  Sun, Nov 18, 2012 at 9:34 AM, <dlawrencenewyork at aol.com>  wrote:
>
> > The curious part of this to me was when the AOL originally  posted the
> link
> > (The Huffington Post) it included in the teaser "Why  Man May Never Walk
> on
> > Mars".
> >
> >
> > Now this article  also ignores the spikes in high energy protons levels
> > from the Sun due  to coronal mass ejections. With no iron core this would
> > not be  deflected by the planet, let alone on the mission.
> >
> >
> >  Best Regards,
> > David
> >
> >
> > -----Original  Message-----
> > From: Franz Schönhofer  <franz.schoenhofer at chello.at>
> > To: radsafe  <radsafe at health.phys.iit.edu>
> > Sent: Sun, Nov 18, 2012 9:56  am
> > Subject: Re: [ RadSafe ] Mars Radiation Won't Harm Astronauts,  Curiosity
> > Rover Finds
> >
> >
> > Shane,
> >
> >  What a nice thought to travel and live on Mars in 400 years when I will
> be
> > 468 years old! Nice to send all those billion starving people to  Mars
> for a
> > better future! What an impetus for the industry to  construct all these
> > space
> > ship and especially the  infrastructure!
> >
> > Were you joking?
> >
> > I think that  there are more important and urgent problems on this tiny
> > planet than  settling on
> > Mars. (Irony off.)
> >
> >  Franz
> >
> >
> >
> > -----Ursprüngliche  Nachricht-----
> > From: ProRadCon at aol.com
> > Sent: Saturday,  November 17, 2012 6:29 PM
> > To: radsafe at health.phys.iit.edu
> >  Subject: [ RadSafe ] Mars Radiation Won't Harm Astronauts,Curiosity
> Rover
> > Finds
> >
> > Good news for those aspiring to go the  distance...hopefully Dr.
> Hassler's
> > scientific report will be publicly  available soon.  Or is it already
> > available?
> >
> >  _Mars  Radiation Won't Harm Astronauts, Curiosity Rover Finds_
> >  (
> >
>
> http://www.huffingtonpost.com/2012/11/16/mars-radiation-astronauts_n_2144742.html?utm_hp
> >
>  _ref=science&icid=maing-grid10|htmlws-main-bb|dl12|sec3_lnk3&pLid=235709)
> >
> >
> >  Manual Link:
> >
> > _
> >
> http://www.huffingtonpost.com/2012/11/16/mars-radiation-astronauts_n_214474
> >
> >
>
> 2.html?utm_hp_ref=science&icid=maing-grid10%7Chtmlws-main-bb%7Cdl12%7Csec3_l
> >  nk3%26pLid%3D235709_
> > (
> >
>
> http://www.huffingtonpost.com/2012/11/16/mars-radiation-astronauts_n_2144742.html?utm_hp_ref=science&icid=maing-grid10|htmlws-main
> >  -bb|dl12|sec3_lnk3&pLid=235709)
> >
> >
> > Shane   Brightwell, MS, CHP
> > President
> > Professional Radiation  Consulting,  Inc.
> > 7 Balmoral Drive
> > Pittstown, NJ  08867
> > Office: (908) 730-9224
> > Fax: (720) 294-1153
> >  Mobile: (631) 278-0610
> > E-mail:  proradcon at aol.com
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>
> --
> Dan ii
>
> Dan W  McCarn, Geologist
> 108 Sherwood Blvd
> Los Alamos, NM  87544-3425
> +1-505-672-2014 (Home – New Mexico)
> +1-505-670-8123 (Mobile -  New Mexico)
> HotGreenChile at gmail.com (Private email) HotGreenChile at gmail  dot com
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-- 
Dan ii

Dan W McCarn, Geologist
108 Sherwood Blvd
Los Alamos, NM 87544-3425
+1-505-672-2014 (Home – New Mexico)
+1-505-670-8123 (Mobile - New Mexico)
HotGreenChile at gmail.com (Private email) HotGreenChile at gmail dot com

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