Crater Lake, Oregon - OR058 Additional Site Information James H. Speer and Thomas W. Swetnam Purpose of Collection: Ecology - insect outbreaks Detrend method: 40-year cubic smoothing spline Cores are stored at Laboratory of Tree-Ring Research, Tucson, AZ. This site was collected for a pandora moth outbreak study. We were able to demonstrate that much of the variance in the tree cores was explained by the effects of pandora moth defoliation, therefore, this chronology would not be useful for climate reconstruction. We used a 40-year cubic smoothing spline on the cores to remove long-term climate fluctuations and age trends. References: Speer, J.H. 1997. A dendrochronological record of pandora moth (Coloradia pandora, Blake) outbreaks in central Oregon. MS thesis, The Univeristy of Arizona. Tucson, 159pp. Speer, J.H., Swetnam, T.W., Wickman, B.E., and Youngblood, A., 2000. Changes in pandora moth outbreak dynamics during the past 622 years. Submitted to Ecology. COFECHA output: Chronology file name : OR058.CRN Measurement file name : OR058.RWL Date checked : 29MAR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1572 Ending year : 1990 Principal investigators: James H. Speer and Thomas W. Swetnam Site name : Crater Lake Site location : Oregon Species information : PIPO PONDEROSA PINE Latitude : +4247 Longitude : -12204 Elevation : 1370M Series intercorrelation: 0.508 Avg mean sensitivity : 0.247 Avg standard deviation : 0.760 Avg autocorrelation : 0.807 Number dated series : 24 Segment length tested : 50 Number problem segments: 30 Pct problem segments : 13.27 PART 5: CORRELATION OF SERIES BY SEGMENTS: or058.rwl 13:14 Tue 29 Mar 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 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 CLK01A 1747 1990 .53 .49 .32B .47 .50 .62 .65 .54 .52 .61 2 CLK01B 1732 1990 .69 .42 .29A .42 .49 .56 .58 .59 .53 .54 3 CLK02A 1748 1990 .37 .44 .39 .46 .57 .59 .62 .67 .50 .49 4 CLK02B 1768 1990 .28B .29B .53 .74 .51 .45 .48 .46B .60 5 CLK03A 1662 1990 .62 .50 .63 .71 .65 .52 .58 .64 .66 .61 .65 .80 .72 6 CLK03B 1657 1990 .49 .49 .56 .78 .61 .51 .65 .61 .70 .73 .62 .56 .63 7 CLK04A 1838 1990 .45 .62 .64 .57 .60 .63 8 CLK04B 1827 1990 .51 .61 .64 .61 .53 .58 9 CLK05A 1810 1990 .53 .58 .52 .56 .51 .52 .62 10 CLK05B 1790 1972 .28A .43 .58 .64 .69 .62 .56 11 CLK06A 1741 1990 .41 .27A .30A .57 .48 .52 .52 .29A .22A .43 12 CLK06B 1742 1990 .42 .39 .31A .44 .35 .42 .45 .32A .30A .31A 13 CLK07A 1572 1850 .56 .51 .74 .69 .45 .49 .20B .04B .36 .49 .34 .32A 14 CLK07B 1572 1850 .56 .51 .74 .68 .54 .64 .58 .51 .55 .39 .41 .41 15 CLK08A 1714 1990 .77 .77 .52 .43 .62 .61 .63 .64 .59 .61 .55 16 CLK08B 1726 1990 .71 .66 .52 .46 .42 .58 .62 .63 .58 .54 17 CLK09A 1678 1990 .31A .34 .43 .41 .48 .39 .34B .33A .40 .47 .45 .32A 18 CLK09B 1661 1990 .50 .38 .53 .49 .41 .47 .50 .55 .56 .55 .33A .26B .34 19 CLK10A 1800 1990 .57 .57 .59 .60 .50 .37 .34 20 CLK10B 1793 1990 .48 .56 .58 .47 .52 .47 .37 .43 21 CLK11A 1829 1990 .61 .75 .78 .58 .34 .42 22 CLK11B 1783 1990 .27B .40 .42 .38 .44 .55 .24A .25A 23 CLK12A 1780 1990 .29A .44 .46 .71 .80 .61 .47B .62 24 CLK12B 1770 1950 .24B .30A .46 .39 .50 .62 .60 .64 Av segment correlation .56 .51 .74 .69 .52 .47 .52 .53 .45 .39 .49 .51 .57 .60 .54 .47 .50 PART 7: DESCRIPTIVE STATISTICS: or058.rwl 13:14 Tue 29 Mar 2005 Page 8 ------------------------------------------------------------------------------------------------------------------------------------ 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 CLK01A 1747 1990 244 10 1 .544 1.49 4.01 .465 .629 .208 2.59 .370 -.012 3 2 CLK01B 1732 1990 259 10 1 .548 1.37 3.09 .502 .619 .248 2.67 .419 .016 2 3 CLK02A 1748 1990 243 10 0 .507 1.49 4.23 .993 .906 .219 2.62 .429 -.013 1 4 CLK02B 1768 1990 223 9 3 .466 1.53 4.22 .800 .850 .225 2.65 .369 -.022 1 5 CLK03A 1662 1990 329 13 0 .603 1.11 3.00 .503 .703 .307 2.68 .437 .008 3 6 CLK03B 1657 1990 334 13 0 .605 1.10 2.94 .571 .814 .254 2.69 .400 .015 2 7 CLK04A 1838 1990 153 6 0 .536 2.20 4.81 .744 .741 .189 2.69 .499 -.066 1 8 CLK04B 1827 1990 164 6 0 .576 1.86 3.88 .656 .642 .221 2.58 .376 .010 1 9 CLK05A 1810 1990 181 7 0 .545 1.88 3.95 .792 .818 .223 2.68 .439 .004 1 10 CLK05B 1790 1972 183 7 1 .534 1.68 4.84 1.108 .913 .224 2.62 .395 .026 1 11 CLK06A 1741 1990 250 10 4 .441 1.01 2.07 .390 .705 .280 2.48 .295 -.009 1 12 CLK06B 1742 1990 249 10 4 .402 .92 2.31 .427 .716 .288 2.53 .295 -.037 1 13 CLK07A 1572 1850 279 12 3 .410 1.06 4.43 .914 .899 .256 2.59 .318 .003 1 14 CLK07B 1572 1850 279 12 0 .539 1.18 4.93 1.006 .921 .257 2.69 .416 .028 1 15 CLK08A 1714 1990 277 11 0 .609 1.29 4.35 .940 .910 .233 2.64 .373 .005 1 16 CLK08B 1726 1990 265 10 0 .591 1.21 4.08 .925 .893 .267 2.51 .341 .019 1 17 CLK09A 1678 1990 313 12 4 .386 .93 3.67 .760 .906 .280 2.65 .370 -.026 1 18 CLK09B 1661 1990 330 13 2 .437 .97 4.00 .806 .915 .255 2.66 .401 .013 1 19 CLK10A 1800 1990 191 7 0 .506 1.95 4.55 .873 .779 .222 2.75 .509 -.025 2 20 CLK10B 1793 1990 198 8 0 .498 1.81 3.40 .632 .811 .187 2.57 .367 .012 1 21 CLK11A 1829 1990 162 6 0 .591 2.00 6.93 1.310 .825 .237 2.68 .400 -.013 1 22 CLK11B 1783 1990 208 8 3 .350 1.68 4.59 1.161 .888 .246 2.56 .316 -.026 1 23 CLK12A 1780 1990 211 8 2 .537 1.50 3.55 .659 .752 .240 2.63 .443 -.014 1 24 CLK12B 1770 1950 181 8 2 .452 1.67 3.28 .652 .688 .254 2.52 .411 .000 8 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 5706 226 30 .508 1.38 6.93 .760 .807 .247 2.75 .388 -.003