Henwallow Falls, Tenessee - TN014 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 : TN014.CRN Measurement file name : TN014.RWL Date checked : 06APR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1687 Ending year : 1918 Principal investigators: J.Young, R.Keeland, E.Nunes Site name : Henwallow Falls Site location : Tennessee Species information : CADN AMERICAN CHESTNUT Latitude : 3545 Longitude : -08315 Elevation : 715M Series intercorrelation: 0.518 Avg mean sensitivity : 0.165 Avg standard deviation : 0.584 Avg autocorrelation : 0.681 Number dated series : 22 Segment length tested : 50 Number problem segments: 14 Pct problem segments : 11.57 PART 5: CORRELATION OF SERIES BY SEGMENTS: tn014.rwl 13:42 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 1700 1725 1750 1775 1800 1825 1850 1875 1749 1774 1799 1824 1849 1874 1899 1924 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 HWF04B 1728 1842 .76 .64 .60 .48 2 HWF05A 1746 1849 .73 .73 .68 .43 3 HWF05B 1728 1839 .64 .77 .60 .57 4 HWF07A 1733 1861 .61 .75 .73 .53 .47 5 HWF07B 1735 1859 .68 .74 .66 .54 .58 6 HWF08A 1738 1894 .59 .70 .64 .48 .56 .57 7 HWF08B 1729 1895 .50 .61 .68 .59 .60 .58 8 HWF10A 1734 1875 .28A .32A .38 .35 .09B .10B 9 HWF10B 1750 1887 .36 .40 .34 .11B .07B 10 HWF10C 1714 1849 .15B .44 .34 .25A .29A 11 HW303B 1812 1903 .50 .57 .58 .55 12 HW303H 1731 1899 .65 .59 .48 .46 .27A .26A 13 HW306A 1764 1913 .62 .62 .40 .31A .42 .52 14 HW306B 1687 1781 .50 .43 .43 15 HW307A 1700 1918 .63 .57 .72 .70 .59 .47 .51 .54 16 HW307B 1710 1819 .70 .58 .64 .61 17 HW309C 1727 1902 .67 .73 .63 .52 .50 .49 .51 18 HW309D 1722 1903 .53 .63 .68 .69 .53 .35 .44 .46 19 HW312A 1737 1906 .71 .68 .57 .42 .48 .44 .31B 20 HW312B 1735 1897 .59 .62 .57 .41 .32A .34 21 HW312C 1742 1911 .56 .66 .71 .63 .46 .46 .55 22 HW312E 1789 1912 .50 .45 .34 .37 .40 Av segment correlation .50 .59 .62 .59 .48 .41 .40 .48 PART 7: DESCRIPTIVE STATISTICS: tn014.rwl 13:42 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 HWF04B 1728 1842 115 4 0 .641 2.25 3.90 .644 .829 .128 2.48 .347 -.016 1 2 HWF05A 1746 1849 104 4 0 .610 1.58 3.57 .440 .706 .164 2.63 .389 .014 1 3 HWF05B 1728 1839 112 4 0 .615 1.69 3.14 .395 .493 .180 2.57 .379 .005 3 4 HWF07A 1733 1861 129 5 0 .627 2.65 4.01 .544 .367 .188 2.52 .402 .000 1 5 HWF07B 1735 1859 125 5 0 .642 2.62 4.19 .548 .522 .175 2.57 .433 .014 1 6 HWF08A 1738 1894 157 6 0 .535 1.62 2.81 .378 .709 .134 2.68 .443 .013 1 7 HWF08B 1729 1895 167 6 0 .554 1.69 3.22 .452 .749 .143 2.62 .422 .000 2 8 HWF10A 1734 1875 142 6 4 .283 2.10 2.94 .399 .597 .138 2.62 .471 .031 1 9 HWF10B 1750 1887 138 5 2 .288 2.01 3.47 .558 .818 .134 2.64 .445 .021 1 10 HWF10C 1714 1849 136 5 3 .298 2.59 6.10 .815 .799 .141 2.45 .342 -.013 1 11 HW303B 1812 1903 92 4 0 .453 1.74 2.71 .427 .633 .158 2.81 .552 -.127 2 12 HW303H 1731 1899 169 6 2 .484 2.09 4.66 .672 .646 .179 2.84 .408 .013 2 13 HW306A 1764 1913 150 6 1 .508 1.73 3.80 .519 .607 .182 2.89 .524 .037 1 14 HW306B 1687 1781 95 3 0 .518 3.23 6.79 1.237 .743 .222 2.66 .425 .039 1 15 HW307A 1700 1918 219 8 0 .589 1.96 5.89 1.172 .849 .199 2.67 .396 -.017 1 16 HW307B 1710 1819 110 4 0 .644 2.76 5.80 1.024 .607 .258 2.84 .493 .034 1 17 HW309C 1727 1902 176 7 0 .592 1.41 3.24 .382 .660 .148 2.73 .435 .012 1 18 HW309D 1722 1903 182 8 0 .556 1.42 2.76 .381 .668 .157 2.62 .375 .007 1 19 HW312A 1737 1906 170 7 1 .523 1.32 3.00 .511 .716 .157 2.93 .496 .023 1 20 HW312B 1735 1897 163 6 1 .479 1.36 3.13 .526 .680 .167 2.91 .457 -.019 1 21 HW312C 1742 1911 170 7 0 .540 1.37 2.43 .368 .653 .162 2.66 .404 .040 1 22 HW312E 1789 1912 124 5 0 .412 1.50 3.42 .516 .803 .149 2.92 .501 .011 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3145 121 14 .518 1.89 6.79 .584 .681 .165 2.93 .432 .007