<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">McCord, Virgil Alexander Stuart</style></author></authors><tertiary-authors><author><style face="normal" font="default" size="100%">LaMarche, V.C.</style></author></tertiary-authors></contributors><titles><title><style face="normal" font="default" size="100%">A New Computerized X-ray Densitometric System for Tree-Ring Analysis</style></title><secondary-title><style face="normal" font="default" size="100%">Geoscience</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1984</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=753909891&amp;sid=1&amp;Fmt=1&amp;clientId=43922&amp;RQT=309&amp;VName=PQD</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">University of Arizona</style></publisher><volume><style face="normal" font="default" size="100%">MS</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;A new facility for X-ray densitometric analysis is in operation at the Laboratory of Tree-Ring Research. Tree-ring specimens are cute to a uniform thickness of 1.0 mm and contact radiographs are produced. The radiographs are scanned by a modified Joyce-Loebl optical microdesitometer interfaced with an Apple II microcomputer. The film optical densities are sampled at 0.02 mm increments and stored on magnetic disks. A battery of computer programs has been developed to edit and process these data, and to transform them into annual time series of various wood density characteristics for each specimen. Several of the programs employ interactive high-resolution graphics to enable the operator to ensure that the resulting series are accurate and complete. Data produced include maximum latewood density, minimum earlywood density, total ring width, average annual density, and integrated annual density. These parameters can be employed as paleoenvironmental indicators.&lt;/p&gt;</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>6</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">LaMarche, V.C.</style></author><author><style face="normal" font="default" size="100%">Holmes, R.L.</style></author><author><style face="normal" font="default" size="100%">Dunwiddie, P.W.</style></author><author><style face="normal" font="default" size="100%">Drew, L.G.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tree Ring Chronologies of the Southern Hemisphere 1. Argentina</style></title><secondary-title><style face="normal" font="default" size="100%">Tree Ring Chronologies of the Southern Hemisphere</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">argentina</style></keyword><keyword><style  face="normal" font="default" size="100%">chronology</style></keyword><keyword><style  face="normal" font="default" size="100%">date</style></keyword><keyword><style  face="normal" font="default" size="100%">dendrochronology</style></keyword><keyword><style  face="normal" font="default" size="100%">hemisphere</style></keyword><keyword><style  face="normal" font="default" size="100%">south america</style></keyword><keyword><style  face="normal" font="default" size="100%">southern</style></keyword><keyword><style  face="normal" font="default" size="100%">tree ring</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1979</style></year></dates><publisher><style face="normal" font="default" size="100%">Laboratory of Tree-Ring Research</style></publisher><pub-location><style face="normal" font="default" size="100%">Tucson</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>6</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">LaMarche, V.C.</style></author><author><style face="normal" font="default" size="100%">Holmes, R.L.</style></author><author><style face="normal" font="default" size="100%">Dunwiddie, P.W.</style></author><author><style face="normal" font="default" size="100%">Drew, L.G.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tree Ring Chronologies of the Southern Hemisphere 2. Chile</style></title><secondary-title><style face="normal" font="default" size="100%">Tree Ring Chronologies of the Southern Hemisphere</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">chile</style></keyword><keyword><style  face="normal" font="default" size="100%">chronology</style></keyword><keyword><style  face="normal" font="default" size="100%">date</style></keyword><keyword><style  face="normal" font="default" size="100%">dendrochronology</style></keyword><keyword><style  face="normal" font="default" size="100%">south america</style></keyword><keyword><style  face="normal" font="default" size="100%">southern hemisphere</style></keyword><keyword><style  face="normal" font="default" size="100%">tree ring</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1979</style></year></dates></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>6</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">LaMarche, V.C.</style></author><author><style face="normal" font="default" size="100%">Holmes, R.L.</style></author><author><style face="normal" font="default" size="100%">Dunwiddie, P.W.</style></author><author><style face="normal" font="default" size="100%">Drew, L.G.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tree Ring Chronologies of the Southern Hemisphere 3. New Zealand</style></title><secondary-title><style face="normal" font="default" size="100%">Tree Ring Chronologies of the Southern Hemisphere</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">chronologies</style></keyword><keyword><style  face="normal" font="default" size="100%">date</style></keyword><keyword><style  face="normal" font="default" size="100%">dendrochronology</style></keyword><keyword><style  face="normal" font="default" size="100%">new zealand</style></keyword><keyword><style  face="normal" font="default" size="100%">southern hemisphere</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1979</style></year></dates><publisher><style face="normal" font="default" size="100%">The Tree Ring Laboratory</style></publisher><pub-location><style face="normal" font="default" size="100%">Tucson</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>6</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">LaMarche, V.C.</style></author><author><style face="normal" font="default" size="100%">Holmes, R.L.</style></author><author><style face="normal" font="default" size="100%">Dunwiddie, P.W.</style></author><author><style face="normal" font="default" size="100%">Drew, L.G.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tree Ring Chronologies of the Southern Hemisphere 5. South Africa</style></title><secondary-title><style face="normal" font="default" size="100%">Tree Ring Chronologies of the Southern Hemisphere</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">africa</style></keyword><keyword><style  face="normal" font="default" size="100%">chronology</style></keyword><keyword><style  face="normal" font="default" size="100%">date</style></keyword><keyword><style  face="normal" font="default" size="100%">dendrochronology</style></keyword><keyword><style  face="normal" font="default" size="100%">south africa</style></keyword><keyword><style  face="normal" font="default" size="100%">southern hemisphere</style></keyword><keyword><style  face="normal" font="default" size="100%">tree ring</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1979</style></year></dates><publisher><style face="normal" font="default" size="100%">Laboratory of Tree Ring Research</style></publisher><pub-location><style face="normal" font="default" size="100%">Tucson</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">LaMarche, V.C.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tree-ring evidence of past climatic variability</style></title><secondary-title><style face="normal" font="default" size="100%">Nature</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">ancient</style></keyword><keyword><style  face="normal" font="default" size="100%">climate</style></keyword><keyword><style  face="normal" font="default" size="100%">environment</style></keyword><keyword><style  face="normal" font="default" size="100%">paleoclimatology</style></keyword><keyword><style  face="normal" font="default" size="100%">past</style></keyword><keyword><style  face="normal" font="default" size="100%">record</style></keyword><keyword><style  face="normal" font="default" size="100%">tree ring</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1978</style></year></dates><volume><style face="normal" font="default" size="100%">276</style></volume><issue><style face="normal" font="default" size="100%">No. 5686</style></issue><notes><style face="normal" font="default" size="100%">&lt;p&gt;Copies of this are available through the Tree Ring Laboratory. Please contact the lab for more information.&lt;/p&gt;</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">LaMarche, V.C.</style></author><author><style face="normal" font="default" size="100%">Fritts, H.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tree Rings, Glacial Advance, And Climate in The Alps</style></title><secondary-title><style face="normal" font="default" size="100%">Zeitschrift fur Gletscherkunde und Glazialgeologie</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">alps</style></keyword><keyword><style  face="normal" font="default" size="100%">austria</style></keyword><keyword><style  face="normal" font="default" size="100%">climatology</style></keyword><keyword><style  face="normal" font="default" size="100%">environment</style></keyword><keyword><style  face="normal" font="default" size="100%">glacial advance</style></keyword><keyword><style  face="normal" font="default" size="100%">glaciers</style></keyword><keyword><style  face="normal" font="default" size="100%">Switzerland</style></keyword><keyword><style  face="normal" font="default" size="100%">tree ring</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1971</style></year></dates><volume><style face="normal" font="default" size="100%">VII</style></volume><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Ring-width variations in stone pine near upper treeline in the Alps show a high negative correlation with the percentage of advancing glaciers in Austria and Switzerland. The relationship is due to the similarity of climatic models for tree growth and the glacial mass budget. Tree-ring fluctuations during the period 1800-1889, prior to the compilation of glacial statistics show good agreement with historical glacial advances and periods of low summer temperatures, especially around 1820-1855. Tree-ring studies could assist in reconstructing the glacial and climatic history of the Alps, possibly for a period of 1,000 years or more.&lt;/p&gt;</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;Copies of this are available through the Tree Ring Laboratory; please contact the lab for more information.&lt;/p&gt;</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>6</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hughes, M.K.</style></author><author><style face="normal" font="default" size="100%">LaMarche, V.C.</style></author><author><style face="normal" font="default" size="100%">Pilcher, J.R.</style></author><author><style face="normal" font="default" size="100%">Kelly, P.M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Climate from Tree Rings</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">climate</style></keyword><keyword><style  face="normal" font="default" size="100%">dendrochronology</style></keyword><keyword><style  face="normal" font="default" size="100%">paleoclimatology</style></keyword><keyword><style  face="normal" font="default" size="100%">tree rings</style></keyword></keywords><publisher><style face="normal" font="default" size="100%">Cambridge University Press</style></publisher><notes><style face="normal" font="default" size="100%">&lt;p&gt;Copies of this are available in the Tree Ring Laboratory. Please contact the curator for more information. pcreasman@ltrr.arizona.edu&lt;/p&gt;</style></notes></record></records></xml>