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To Rachel's notes here, I would add that the tidal amplitude is also=20=20
important, in addition to the times. Amplitude refers to the=20=20
vertical distance from low tide to high tide, and in the Minas Basin=20=20
it makes a big difference whether the high tide is a high high tide=20=20
vs. a low high tide. Confused? The highest tides of the month are=20=20
so high that it takes longer after the high tide in order for=20=20
shorebird feeding habitat to get exposed by the ebbing water-line.=20=20=20
Likewise, observations before a high high tide have to begin well=20=20
before the predicted high-tide time. Also remember that the times in=20=20
the tide-tables are PREDICTED times as well as the amplitudes. The=20=20
actual times and amplitudes can be quite different from the=20=20
predictions. Especially important conditions are low vs. high=20=20
pressure conditions plus the strength and direction of winds (onshore=20=20
vs. offshore directions). Most of the time the predictions are=20=20
pretty close to reality, and of course a certain amount of guesswork=20=20
and luck are involved in being in the right place at the right time=20=20
to see the best "shows" of aerobatics, chases by falcons, optimal=20=20
numbers and diversity of shorebirds on the ground and not too far=20=20
from the upper beach, etc.
If you are in the Wolfville area, the Blomidon Naturalists Society=20=20
Calendar for 2012 (with tide-times and amplitudes in metres for every=20=20
day of the year) is still for sale, hopefully now quite cheaply, in=20=20
places like Eos health-food store on Front St. and Herbin's Jewelry=20=20
on Main St. and perhaps some of the farm markets in Greenwich and=20=20
Port Williams Shur Gain.
Cheers from Jim in Wolfville.
Begin forwarded message:
> From: rachelhoogenbos <rachelhoogenbos@yahoo.com>
> Date: August 6, 2012 10:49:44 AM ADT
> To: NS-RBA@yahoogroups.com
> Subject: [NS-RBA] Tides
>
> Although this may be common knowledge to some, it could make a=20=20
> crcucial difference to visiting birders. www.tides.info/ will give=20=20
> you local tides when you enter the location you are interested in=20=20
> (no hyphens etc in names). A frequent question from visitors is=20=20
> 'what is the best time to see birds?'. Im my experience at Cape=20=20
> Sable Island, it is 1 hour before and 1 hour after low tide for=20=20
> shorebirds. The less feeding area (mudflats) are exposed, the more=20=20
> birds are squeezed together. To plan your visit the Tides listing=20=20
> should be your guide.
>
> from my soapbox (or lobster crate) at CSI,
>
> Rachel
>
> __._,_.___
> Reply to sender | Reply to group | Reply via web post | Start a New=20=20
> Topic
> Messages in this topic (1)
> RECENT ACTIVITY:
> Visit Your Group
> Switch to: Text-Only, Daily Digest =95 Unsubscribe =95 Terms of Use
> .
>
> __,_._,___
--Apple-Mail-29-898966506
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<html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webk=
it-line-break: after-white-space; ">
To Rachel's notes here, I would add that the tidal amplitude is also import=
ant, in addition to the times. Amplitude refers to the vertical dista=
nce from low tide to high tide, and in the Minas Basin it makes a big diffe=
rence whether the high tide is a high high tide vs. a low high tide. =
Confused? The highest tides of the month are so high that it takes lo=
nger after the high tide in order for shorebird feeding habitat to get expo=
sed by the ebbing water-line. Likewise, observations before a high hi=
gh tide have to begin well before the predicted high-tide time. Also =
remember that the times in the tide-tables are PREDICTED times as well as t=
he amplitudes. The actual times and amplitudes can be quite different=
from the predictions. Especially important conditions are low vs. hi=
gh pressure conditions plus the strength and direction of winds (onshore vs=
. offshore directions). Most of the time the predictions are pretty c=
lose to reality, and of course a certain amount of guesswork and luck are i=
nvolved in being in the right place at the right time to see the best "show=
s" of aerobatics, chases by falcons, optimal numbers and diversity of shore=
birds on the ground and not too far from the upper beach, etc.<div><br></di=
v><div>If you are in the Wolfville area, the Blomidon Naturalists Society C=
alendar for 2012 (with tide-times and amplitudes in metres for every day of=
the year) is still for sale, hopefully now quite cheaply, in places like E=
os health-food store on Front St. and Herbin's Jewelry on Main St. and perh=
aps some of the farm markets in Greenwich and Port Williams Shur Gain.<br><=
div><br></div><div>Cheers from Jim in Wolfville.<br><div><br><div>Begin for=
warded message:</div><br class=3D"Apple-interchange-newline"><blockquote ty=
pe=3D"cite"><div style=3D"margin-top: 0px; margin-right: 0px; margin-bottom=
: 0px; margin-left: 0px; "><font face=3D"Helvetica" size=3D"3" color=3D"#00=
0000" style=3D"font: 12.0px Helvetica; color: #000000"><b>From: </b></font>=
<font face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px Helvetica">rachel=
hoogenbos <<a href=3D"mailto:rachelhoogenbos@yahoo.com">rachelhoogenbos@=
yahoo.com</a>></font></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; "><font face=3D"Helvetica" size=
=3D"3" color=3D"#000000" style=3D"font: 12.0px Helvetica; color: #000000"><=
b>Date: </b></font><font face=3D"Helvetica" size=3D"3" style=3D"font: 12.0p=
x Helvetica">August 6, 2012 10:49:44 AM ADT</font></div><div style=3D"margi=
n-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><fon=
t face=3D"Helvetica" size=3D"3" color=3D"#000000" style=3D"font: 12.0px Hel=
vetica; color: #000000"><b>To: </b></font><font face=3D"Helvetica" size=3D"=
3" style=3D"font: 12.0px Helvetica"><a href=3D"mailto:NS-RBA@yahoogroups.co=
m">NS-RBA@yahoogroups.com</a></font></div><div style=3D"margin-top: 0px; ma=
rgin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face=3D"Helv=
etica" size=3D"3" color=3D"#000000" style=3D"font: 12.0px Helvetica; color:=
#000000"><b>Subject: </b></font><font face=3D"Helvetica" size=3D"3" style=
=3D"font: 12.0px Helvetica"><b>[NS-RBA] Tides</b></font></div><div style=3D=
"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><br></div> <span style=3D"display:none"> </span>=
<!--~-|**|PrettyHtmlStartT|**|-~--> <div id=3D"ygrp-mlmsg" style=3D"positi=
on:relative;"> <div id=3D"ygrp-msg" style=3D"z-index: 1;"> <!--~-|**|Prett=
yHtmlEndT|**|-~--> <div id=3D"ygrp-text"><p>Although this may be common=
knowledge to some, it could make a crcucial difference to visiting birders=
. www.tides.info/ will give you local=
tides when you enter the location you are interested in (no hyphens etc in=
names). A frequent question from visitors is 'what is the best time to see=
birds?'. Im my experience at Cape Sable Island, it is 1 hour before and 1 =
hour after low tide for shorebirds. The less feeding area (mudflats) are ex=
posed, the more birds are squeezed together. To plan your visit the Tides l=
isting should be your guide.<br> <br> from my soapbox (or lobster crate) at=
CSI,<br> <br> Rachel<br> <br> </p> </div> <!--~-|**|PrettyHtml=
Start|**|-~--> <div style=3D"color: #fff; height: 0;">__._,_.___</div> =
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