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<div class="moz-cite-prefix">On 3/10/2015 6:51 PM, Mateusz Konieczny
wrote:<br>
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<blockquote cite="mid:20151003105125.76b6287c@Grisznak" type="cite">
<pre wrap="">On Fri, 2 Oct 2015 21:50:56 +1000
Warin <a class="moz-txt-link-rfc2396E" href="mailto:61sundowner@gmail.com"><61sundowner@gmail.com></a> wrote:
</pre>
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<pre wrap="">Prior to April 2014 the wiki for intermittent had no reference to
'seasonal' in its description.
</pre>
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<pre wrap="">And I would not be against removing them. I am only against
restricting intermittent=yes to random lack of water.
Stream that disappears every summer IMHO should be tagged as
[waterway=stream, intermittent=yes, seasonal=yes].
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<pre wrap="">
If it disappears every summer then it is seasonal, not intermittent.
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<pre>snip</pre>
<blockquote cite="mid:20151003105125.76b6287c@Grisznak" type="cite">
<pre>
Can you provide sources that in hydrology "intermittent waterway" does
not apply to regular appearance/disappearance of water?
According to what I found[1] "intermittent waterway" include not only
"random" disappearance of water. It explicitly includes
case of "Intermittent streams flow seasonally".
[1]
"Intermittent streams flow seasonally in response to snowmelt and/or
elevated groundwater tables resulting from increased periods of
precipitation and/or decreased evapotranspiration." from "Temporary
streams" by Margaret Palmer, or
<a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Perennial_stream">https://en.wikipedia.org/wiki/Perennial_stream</a> " "Perennial" streams
are contrasted with "intermittent" streams which normally cease
flowing for weeks or months each year, and with "ephemeral" channels
that flow only for hours or days following rainfall." or
<a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Stream#Intermittent_and_ephemeral_streams">https://en.wikipedia.org/wiki/Stream#Intermittent_and_ephemeral_streams</a> .
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<tt>The 3 cases are;<br>
<br>
Seasonally: flows on a yearly cycle.<br>
Intermittent: flows randomly, no pattern nor season.<br>
<br>
Combination - Seasonal and intermittent: Where the flow <u>may</u>
only take palace in one or more (but not the whole year) season/s
but does so randomly within that period.<br>
<br>
</tt><tt><tt><br>
I think your text is the combination case .. poorly worded but
that is what it is. <br>
</tt></tt>
<pre>Quote - "<u>Intermittent</u> streams flow <u>seasonally</u>" - both words used ... In this case use both tags!
If I can make it clearer?
Misquote 1
"Intermittent streams flow in response to snowmelt"
In this case the flow is random in response to the snow melt, if the snow is deep enough .. it flows when it melts.
Misquote 2
"streams flow seasonally in response to snowmelt"
In this case the flow is seasonal in response to the snow melt.
Combining the two .. both seasonal and intermittent... poorly done and I can see how it is open to misinterpretation..
I think you have taken the quote as a meaning of intermittent.. I don't think that is the case.
Writing a text that is both technically correct, easy to understand and entertaining ... well that is a difficult job!
As I say it is poorly worded, but reading further in, from what is given, I get that
it only happens on snow melt - so only in spring- thus seasonal,
and then only if the snow is deep- so intermittent.
Does that help?
</pre>
<tt>Again: Intermittent does not mean seasonal.<br>
Intermittent does not imply a ratio of wet to dry either.. it may
be wet 'typically' once every 3 years. Or dry 'typically' once a
week. <br>
If that information is required then at least one new key is
needed ... probably a few of them, typical frequency, typical wet
to dry ratio to start with. <br>
<br>
OK? <br>
<br>
PS I have tried to find that book ... not listed on an Australia
wide search... <br>
<a class="moz-txt-link-freetext" href="http://trove.nla.gov.au/book/result?q-field0=&q-type0=all&q-term0=&q-field1=title%3A&q-type1=all&q-term1=Temporary++streams&q-field2=creator%3A&q-type2=all&q-term2=Margaret+Palmer&q-field3=subject%3A&q-type3=all&q-term3=&q-year1-date=&q-year2-date=&l-advformat=&l-advformat=&l-advformat=&l-advformat=&l-advformat=&l-availability=&l-discipline=&l-language=">http://trove.nla.gov.au/book/result?q-field0=&q-type0=all&q-term0=&q-field1=title%3A&q-type1=all&q-term1=Temporary++streams&q-field2=creator%3A&q-type2=all&q-term2=Margaret+Palmer&q-field3=subject%3A&q-type3=all&q-term3=&q-year1-date=&q-year2-date=&l-advformat=&l-advformat=&l-advformat=&l-advformat=&l-advformat=&l-availability=&l-discipline=&l-language=</a><br>
<br>
That is a public search, not research search. As in public
libraries rather than scientific papers. <br>
It should show up if it were in the university libraries though.
But some of them have thrown their books out - to rely on
electronic issues. <br>
I have had to purchased a few books I could not get in Australia..
abebooks is good.. <br>
<br>
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</tt>
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