Kenai Lowlands, Alaska - AK018 Additional Site Information Greg Wiles and Parker E. Calkin Disturbed site, late 1800s experienced an insect outbreak and/or ice storm. Detrending Method: Negative exponontial or linear regression with negative or 0 slope Purpose of Collection: Climatology - temperature analyses Cores located at the Tree Ring Lab, Lamont-Doherty Earth Observatory Reference: Wiles, G. C., 1992, Holocene glacial fluctuations in the southern Kenai Mountains, Alaska: Unpublished Ph.D.thesis, University at Buffalo. COFECHA output: Chronology file name : AK018.CRN Measurement file name : AK018.RWL Date checked : 10MAR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1720 Ending year : 1988 Principal investigators: Greg Wiles, Parker E. Calkin Site name : Kenai Lowlands Site location : Alaska Species information : PCSI SITKA SPRUCE Latitude : 5941 Longitude : -15125 Elevation : 20M Series intercorrelation: 0.515 Avg mean sensitivity : 0.225 Avg standard deviation : 0.820 Avg autocorrelation : 0.898 Number dated series : 21 Segment length tested : 50 Number problem segments: 10 Pct problem segments : 5.62 PART 5: CORRELATION OF SERIES BY SEGMENTS: ak018.rwl 13:32 Thu 10 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 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 LL03SW 1776 1988 .19B .35 .34 .37 .37 .56 .71 .57 2 LL3ANW 1790 1988 .37 .44 .44 .44 .37 .63 .70 .50 3 LL05NW 1738 1988 .39 .37 .45 .68 .63 .48 .57 .56 .70 .70 4 LL06NW 1769 1988 .41 .34 .54 .67 .50 .46 .53 .59 .57 5 LL06NE 1765 1988 .51 .41 .46 .36 .34 .47 .45 .40 .40 6 LL07NE 1787 1988 .57 .75 .75 .68 .58 .42 .61 .69 7 LLA7SE 1775 1988 .49 .71 .69 .52 .40 .45 .70 .70 8 LLB7SE 1839 1988 .19B .65 .35 .32A .67 .79 9 LL10SE 1810 1988 .66 .58 .55 .42 .57 .65 .50 10 LL12NE 1868 1988 .30A .39 .31A .40 .49 11 LL13NW 1720 1988 .51 .49 .39 .36 .34 .48 .42 .48 .53 .37 12 LL13SW 1744 1988 .56 .55 .37 .40 .42 .55 .58 .33 .40 .58 13 LL14SE 1773 1988 .45 .73 .65 .50 .47 .56 .27A .36 .57 14 LL14SW 1781 1988 .59 .66 .63 .62 .57 .62 .61 .41 15 LL15NW 1735 1988 .78 .69 .59 .72 .66 .48 .45 .58 .65 .55 16 LL15SE 1753 1988 .61 .68 .39 .26A .43 .55 .46 .50 .51 17 LL16SW 1742 1988 .40 .52 .61 .71 .69 .61 .54 .35 .46 .59 18 LL16NW 1784 1988 .60 .66 .66 .58 .38 .48 .68 .63 19 LL17SW 1776 1988 .49 .57 .48 .56 .69 .74 .66 .48 20 LL20NW 1752 1988 .48 .34 .21B .30B .61 .60 .53 .53 .40 21 LL20SE 1753 1988 .58 .41 .42 .35 .32A .43 .44 .64 .56 Av segment correlation .53 .51 .48 .54 .50 .50 .48 .48 .58 .55 PART 7: DESCRIPTIVE STATISTICS: ak018.rwl 13:32 Thu 10 Mar 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 LL03SW 1776 1988 213 8 1 .438 1.05 5.40 .929 .919 .291 2.95 .425 -.052 2 2 LL3ANW 1790 1988 199 8 0 .496 1.29 6.14 .973 .860 .297 2.69 .333 -.052 1 3 LL05NW 1738 1988 251 10 0 .577 .86 3.18 .711 .925 .241 2.61 .370 -.041 2 4 LL06NW 1769 1988 220 9 0 .551 1.01 3.35 .765 .924 .203 2.70 .372 -.008 2 5 LL06NE 1765 1988 224 9 0 .429 1.20 3.67 .878 .933 .213 2.73 .444 -.044 1 6 LL07NE 1787 1988 202 8 0 .628 1.12 4.30 1.034 .928 .251 2.46 .235 -.082 1 7 LLA7SE 1775 1988 214 8 0 .594 1.61 5.22 1.491 .921 .256 2.67 .305 -.006 4 8 LLB7SE 1839 1988 150 6 2 .429 2.11 5.50 1.434 .894 .257 2.88 .445 -.104 1 9 LL10SE 1810 1988 179 7 0 .570 1.01 3.51 .858 .949 .251 2.55 .323 -.042 2 10 LL12NE 1868 1988 121 5 2 .382 1.86 4.52 .856 .884 .170 2.61 .487 -.056 2 11 LL13NW 1720 1988 269 10 0 .414 .57 1.80 .391 .905 .229 2.65 .356 -.036 1 12 LL13SW 1744 1988 245 10 0 .476 .92 3.02 .666 .874 .242 2.84 .473 -.024 1 13 LL14SE 1773 1988 216 9 1 .471 1.51 4.85 .917 .879 .184 2.53 .339 -.072 1 14 LL14SW 1781 1988 208 8 0 .589 1.33 4.75 .915 .937 .163 2.60 .386 -.036 1 15 LL15NW 1735 1988 254 10 0 .618 .79 2.02 .402 .850 .214 2.63 .366 -.016 1 16 LL15SE 1753 1988 236 9 1 .475 .90 2.65 .476 .845 .199 2.59 .349 -.033 1 17 LL16SW 1742 1988 247 10 0 .539 1.27 5.13 .836 .860 .225 2.74 .359 -.012 1 18 LL16NW 1784 1988 205 8 0 .617 1.17 3.61 .668 .892 .176 2.68 .448 -.076 1 19 LL17SW 1776 1988 213 8 0 .583 1.25 4.59 .971 .928 .210 2.72 .365 -.023 2 20 LL20NW 1752 1988 237 9 2 .440 1.12 3.19 .731 .892 .230 2.63 .470 -.033 1 21 LL20SE 1753 1988 236 9 1 .456 1.27 4.22 .808 .878 .219 2.63 .363 -.019 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 4539 178 10 .515 1.16 6.14 .820 .898 .225 2.95 .380 -.039