[NatureNS] Global warming

From: Christopher Majka <c.majka@ns.sympatico.ca>
To: naturens@chebucto.ns.ca
Date: Sat, 31 May 2008 12:18:15 -0300
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Hi all,

Actually the process of de-glaciation in Nova Scotia began =20
approximately 21,000 years ago (BP: before present). By around 14,500 =20=

years BP almost all of  Nova Scotia was free of ice. At first Nova =20
Scotia was covered by a tundra-like vegetation until around 13,760 =20
years BP when forests began to develop. At around 12,730 years BP =20
there was a extended period of climatic deterioration called the =20
Aller=F8d/Younger Dryas transition which lasted ~ 1,300 years. Around =20=

11,430 years BP this period of cooling ended and the climate adopted, =20=

more or less, its present character (at least until the current period =20=

of warming began).

This chronology manifested itself in many ways, not least of which was =20=

the effect on the coastline of Atlantic Canada. For a fascinating look =20=

at how the coastline of the region changed between 13,000 and 6,000 =20
BP, take a look at the Natural Resources Canada page, Progression of =20
sea-level change in Atlantic Canada:

  http://gsc.nrcan.gc.ca/coast/sealevel/evol/prog_e.php

13,000 years ago Sable Island and Banquereau banks were emergent land =20=

the size of southern Nova Scotia. The Magdalen Islands occupied an =20
area about half the size of Cape Breton, and the Grand Banks were an =20
island at least the size of Nova Scotia! Nova Scotia was an island and =20=

large portions of southern New Brunswick were under water.

Cheers,

Chris

On 31-May-08, at 11:31 AM, Roland McCormick wrote:

> 10.000 years ago Nova Scotia was covered by a glacier. Wouldn't it =20
> be great to go back and live in the good old days before global =20
> warming?
>
> Roland.
> ----- Original Message -----
> From: Andy Moir/Chris Callaghan
> To: naturens@chebucto.ns.ca
> Sent: Friday, May 30, 2008 10:46 PM
> Subject: Re: [NatureNS] Global warming
>
> For those interested in the global warming controversy, you might be
> interested to read about 31, 000 American scientists who disagree:
> http://www.petitionproject.org/index.html
>
> Lois Codling
>
>
> Then you might want to visit this page to learn who is really behind =20=

> the petition project.
> http://www.ucsusa.org/global_warming/science/skeptic-=20
> organizations.html
> Andy Moir

Christopher Majka
Nova Scotia Museum, 1747 Summer St., Halifax, Nova Scotia, Canada  B3H =20=

3A6
c.majka@ns.sympatico.ca




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<html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; "><div>Hi =
all,</div><div><br></div><div>Actually the process of de-glaciation in =
Nova Scotia began approximately 21,000 years ago (BP: before present). =
By around 14,500 years BP almost all of &nbsp;Nova Scotia was free of =
ice. At first Nova Scotia was covered by a tundra-like vegetation until =
around 13,760 years BP when forests began to develop. At around 12,730 =
years BP there was a extended period of climatic deterioration =
called&nbsp;the Aller=F8d/Younger Dryas transition which lasted ~ 1,300 =
years. Around 11,430 years BP this period of cooling ended and the =
climate adopted, more or less, its present character (at least until the =
current period of warming began).</div><div><br></div><div>This =
chronology manifested itself in many ways, not least of which was the =
effect on the coastline of Atlantic Canada. For a fascinating look at =
how the coastline of the region changed between 13,000 and 6,000 BP, =
take a look at the Natural Resources Canada page,&nbsp;Progression of =
sea-level change in Atlantic Canada:</div><div><br></div><div>&nbsp;<a =
href=3D"http://gsc.nrcan.gc.ca/coast/sealevel/evol/prog_e.php">http://gsc.=
nrcan.gc.ca/coast/sealevel/evol/prog_e.php</a></div><div><br></div><div>13=
,000 years ago Sable Island and Banquereau banks were emergent land the =
size of southern Nova Scotia. The Magdalen Islands occupied an area =
about half the size of Cape Breton, and the Grand Banks were an island =
at least the size of Nova Scotia! Nova Scotia was an island and large =
portions of southern New Brunswick were under =
water.</div><div><br></div><div>Cheers,</div><div><br></div><div>Chris</di=
v><div><br></div><div><div>On 31-May-08, at 11:31 AM, Roland McCormick =
wrote:</div><br class=3D"Apple-interchange-newline"><blockquote =
type=3D"cite"><span class=3D"Apple-style-span" style=3D"border-collapse: =
separate; color: rgb(0, 0, 0); font-family: 'Times New Roman'; =
font-size: 14px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; orphans: 2; =
text-align: auto; text-indent: 0px; text-transform: none; white-space: =
normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: =
0px; -webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0; "><div bgcolor=3D"#ffffff"><div><font =
face=3D"Arial" size=3D"2">10.000 years ago Nova Scotia was covered by a =
glacier. Wouldn't it be great to go back and live in the good old days =
before global warming?</font></div><div><font face=3D"Arial" =
size=3D"2"></font>&nbsp;</div><div><font face=3D"Arial" =
size=3D"2">Roland.</font></div><blockquote dir=3D"ltr" =
style=3D"padding-right: 0px; padding-left: 5px; margin-left: 5px; =
border-left-color: rgb(0, 0, 0); border-left-width: 2px; =
border-left-style: solid; margin-right: 0px; "><div style=3D"font: =
normal normal normal 10pt/normal arial; ">----- Original Message =
-----</div><div style=3D"background-image: initial; background-repeat: =
initial; background-attachment: initial; -webkit-background-clip: =
initial; -webkit-background-origin: initial; background-color: rgb(228, =
228, 228); font: normal normal normal 10pt/normal arial; =
background-position: initial initial; "><b>From:</b><span =
class=3D"Apple-converted-space">&nbsp;</span><a =
title=3D"andyandchris@ns.sympatico.ca" =
href=3D"mailto:andyandchris@ns.sympatico.ca">Andy Moir/Chris =
Callaghan</a></div><div style=3D"font: normal normal normal 10pt/normal =
arial; "><b>To:</b><span class=3D"Apple-converted-space">&nbsp;</span><a =
title=3D