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applications.htm
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/REC-html40/loose.dtd"><HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Author" CONTENT="Paul R. Sheppard">
<META NAME="GENERATOR" CONTENT="Mozilla/4.05 [en] (Win95; U) [Netscape]">
<TITLE>Crossdating in Dendrochronology: Applications</TITLE>
<LINK REL=stylesheet HREF="crossdatestyle.css" TYPE="text/css">
</HEAD>
<BODY>
<H1>Dendrochronological Applications</H1><BR>
<TABLE>
<TR><TD><EM>Dendrochronology</EM>:
<UL>
<LI><U><I>ology</I></U>: the study of
<LI><U><I>chronos</I></U>: time, or more specifically events in past time
<LI><U><I>dendros</I></U>: using trees, or more specifically the growth rings of trees
</UL>
Applications in dendrochronology include:
<UL><LI><EM>ecology</EM>: insect outbreaks, forest stand structure, past fires (see image to the right):
<UL>
<LI>The white arrows indicate distinct fires of the past
<LI>Each of those fires has been dendrochronologically dated to the year it burned
</UL>
<LI><EM>climatology</EM>: past droughts or cold periods
<LI><EM>geology</EM>: past earthquakes, volcanic eruptions
<LI><EM>anthropology</EM>: past construction, habitation, and abandonment of societies
</UL>
<TD><IMG SRC="ban.gif" WIDTH="200" HEIGHT="346" ALT="fire-scarred Douglas-fir sample" ALIGN=RIGHT>
</TABLE><BR>
Common objectives:
<UL>
<LI>Put the present in perspective of the past
<LI>Better understand current environmental processes and conditions
<LI>Improve understanding of possible environmental issues of the future
</UL>
To meet these objectives, the exact year of formation of each growth ring must be known:
<UL>
<LI>Merely counting rings doesn't ensure accurate dating
<LI><EM>Crossdating</EM>, also known as pattern matching, ensures accurate dating
</UL>
<EM>Good idea</EM>: Follow these web pages to learn why and how to <EM>crossdate with skeleton plotting</EM> and then <A HREF="SkeletonPlot18.htm">try skeleton plotting</A> for yourself.<P>
<HR>
<CENTER>
<A HREF="introcrossdate.htm">Introduction</A> |
<A HREF="applications.htm">Dendrochronology Applications</A> |
<A HREF="exampleapplication.htm">Crossdating Application</A> |
<A HREF="ringanomalies.htm">Ring-Growth Anomalies</A><BR>
<A HREF="sensitivitycomplacency.htm">Sensitivity-Complacency</A> |
<A HREF="plotting.htm">Skeleton Plotting</A> |
<A HREF="relativescale.htm">Relative Scale</A> |
<A HREF="masterchronology.htm">Master Chronology</A><BR>
<A HREF="patternmatching.htm">Pattern Matching</A> |
<A HREF="findingdates.htm">Finding the Dates</A> |
<A HREF="absentfalse.htm">Absent/False Rings</A> |
<A HREF="SkeletonPlot18.htm">Try Skeleton Plotting for Yourself!</A><BR>
<A HREF="http://www.ltrr.arizona.edu">Laboratory of Tree-Ring Research</A>
</CENTER>
<HR>
<ADDRESS>Paul R. Sheppard<BR>
Laboratory of Tree-Ring Research, The University of Arizona<BR>
Tucson, Arizona 85721 USA<BR>
office: (520) 621-6474, fax: (520) 621-8229<BR>
Comments to: <A HREF="mailto:[email protected]">[email protected]</A>
</ADDRESS><BR>
Copyright © 1998, Laboratory of Tree-Ring Research, The University of Arizona<BR>
Revised -- December, 1998<BR>
URL: <A HREF="applications.htm">http://tree.ltrr.arizona.edu/skeletonplot/applications.htm</A>
</BODY>
</HTML>