Rainbow Falls Trail, Tenessee - TN015 Additional Site information Stahle, D.W., M.K. Cleaveland, M.D. Therrell, D.A. Gay, P.J. Young and W. Blozan Stahle et al American Chestnut Chronologies Files NC010*-NC011* and TN011*-TN015* Reference Stahle, D.W., M.K. Cleaveland, M.D. Therrell, D.A. Gay, P.J. Young and W. Blozan. Submitted. A Retrospective Dendroecology of American Chestnut. Ecological Monographs, 1999. Detrending is double, with the first option being an exponential. If the exponential is fit, a spline with half power cutoff equal to the length of the series is then used detrend the 1st set of indices. If the exponential cannot be fit, then a regression line is fit, and a spline with stiffness equal to 67% of the series length is fit. In no case is a spline with stiffness specification less than 100 yrs fit. Indices are computed as the ratio of measurement to fitted curve. Multivariate autoregressive modeling, with model order initially chosen by Akaike Info Criterion(AIC) minimum, gives the pooled model. If the AIC first minimum is inadequate, the model order can be specified. The individual series are each modeled with the pooled model and the individual residual series are averaged to derive the residual chronology. If the residual chronology still contains an unacceptable amount of persistence, it is rewhitened. The variance of each chronology is detrended with a cubic spline of stiffness equal to the chronology length. COFECHA output: Chronology file name : TN015.CRN Measurement file name : TN015.RWL Date checked : 06APR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1695 Ending year : 1922 Principal investigators: J.Young, R.Keeland, J.Alford May 1996 Site name : Rainbow Falls Trail Site location : Tennessee Species information : CADN AMERICAN CHESTNUT Latitude : 3540 Longitude : -08330 Elevation : 885M Series intercorrelation: 0.637 Avg mean sensitivity : 0.176 Avg standard deviation : 0.663 Avg autocorrelation : 0.644 Number dated series : 11 Segment length tested : 50 Number problem segments: 2 Pct problem segments : 4.08 PART 5: CORRELATION OF SERIES BY SEGMENTS: tn015.rwl 13:43 Wed 06 Apr 2005 Page 5 ------------------------------------------------------------------------------------------------------------------------------------ Correlations of 50-year dated segments, lagged 25 years Flags: A = correlation under .3281 but highest as dated; B = correlation higher at other than dated position Seq Series Time_span 1675 1700 1725 1750 1775 1800 1825 1850 1875 1724 1749 1774 1799 1824 1849 1874 1899 1924 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 RFT03B 1790 1854 .48 .44 .35 2 RFT05B 1854 1910 .45 .42 3 RFT08A 1696 1921 .88 .89 .87 .87 .79 .63 .58 .76 .79 4 RFT08B 1789 1922 .74 .71 .62 .75 .71 5 RFT08D 1695 1922 .88 .89 .88 .86 .83 .72 .64 .81 .73 6 RFT10B 1757 1867 .63 .77 .66 .45 7 RFT10C 1771 1867 .73 .69 .40 .58 8 RFT10E 1773 1853 .65 .74 .52 .50 9 RFT13B 1757 1841 .44 .42 .38 10 RFT21A 1829 1912 .21B .49 .56 11 RFT21B 1830 1912 .32A .55 .64 Av segment correlation .88 .89 .88 .70 .68 .56 .47 .63 .64 PART 7: DESCRIPTIVE STATISTICS: tn015.rwl 13:43 Wed 06 Apr 2005 Page 6 ------------------------------------------------------------------------------------------------------------------------------------ Corr //-------- Unfiltered --------\\ //---- Filtered -----\\ No. No. No. with Mean Max Std Auto Mean Max Std Auto AR Seq Series Interval Years Segmt Flags Master msmt msmt dev corr sens value dev corr () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 1 RFT03B 1790 1854 65 3 0 .443 1.99 3.51 .618 .805 .155 2.57 .531 .051 1 2 RFT05B 1854 1910 57 2 0 .435 4.08 6.71 1.040 .352 .202 2.54 .485 -.011 1 3 RFT08A 1696 1921 226 9 0 .788 1.89 3.41 .484 .683 .154 2.54 .358 .014 1 4 RFT08B 1789 1922 134 5 0 .721 1.92 3.31 .456 .721 .132 2.70 .459 -.049 1 5 RFT08D 1695 1922 228 9 0 .802 1.96 3.39 .505 .661 .160 2.60 .401 .016 1 6 RFT10B 1757 1867 111 4 0 .569 2.46 4.71 .663 .478 .208 2.67 .469 -.024 1 7 RFT10C 1771 1867 97 4 0 .687 2.44 4.09 .668 .560 .202 2.59 .465 -.035 1 8 RFT10E 1773 1853 81 4 0 .609 2.54 4.20 .637 .514 .204 2.55 .509 .082 1 9 RFT13B 1757 1841 85 3 0 .353 3.53 7.63 1.547 .779 .222 2.74 .582 -.108 1 10 RFT21A 1829 1912 84 3 1 .416 2.03 3.74 .711 .748 .186 2.88 .592 .052 2 11 RFT21B 1830 1912 83 3 1 .504 2.41 5.21 .755 .645 .185 2.77 .502 .011 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 1251 49 2 .637 2.30 7.63 .663 .644 .176 2.88 .460 .000