Hawkins Hill, Alaska, USA - AK075 Additional Site Information Gordon Jacoby, Nicole Davi, and Greg Wiles Purpose of Collection: Climate analysis Measurement type: Ring Width and Maximum Density Location of core material: Tree-Ring Laboratory Lamont-Doherty Earth Observatory Palisades, New York 10964 Reference: Davi, N.K, Jacoby, G.C., Wiles, G.C., 2003. Boreal temperature variability inferred from maximum latewood density and tree-ring width data, Wrangell Mountain region, Alaska. Quaternary Research, Vol. 60, pp. 252-262. COFECHA output: Chronology file name : AK075.CRN Measurement file name : AK075.RWL Date checked : 12APR06 Checked by : B. Bauer Beginning year : 1580 Ending year : 1998 Principal investigators: Gordon Jacoby Nicole Davi Greg Wiles Site name : Hawkins Hill Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : +6109 Longitude : -14205 Elevation : 1030M Series intercorrelation: 0.569 Avg mean sensitivity : 0.220 Avg standard deviation : 0.220 Avg autocorrelation : 0.739 Number dated series : 35 Segment length tested : 50 Number problem segments: 21 Pct problem segments : 6.71 PART 5: CORRELATION OF SERIES BY SEGMENTS: Hawkins Hill Ringwidth 06:44 Wed 12 Apr 2006 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 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 HH01TC 1659 1998 .33A .45 .45 .63 .70 .66 .63 .65 .66 .68 .74 .73 .62 2 HHUNL 1860 1998 .73 .77 .75 .79 .71 3 HHO3NDEA 1643 1733 .46 .59 .69 .72 4 HH04TC 1823 1998 .75 .74 .71 .72 .79 .76 .73 5 HH05NDEA 1609 1722 .57 .54 .53 .59 6 HH05SDEA 1609 1798 .63 .59 .66 .62 .50 .63 .69 7 HH08N.SE 1580 1980 .27B .23B .56 .66 .64 .67 .60 .57 .65 .67 .59 .50 .46 .46 .55 .56 8 HH08N'.S 1584 1998 .42 .45 .62 .58 .57 .68 .72 .54 .60 .59 .44 .54 .69 .70 .70 .72 9 HH09.SEL 1830 1998 .76 .71 .66 .67 .77 .64 10 HH12SDEA 1737 1847 .62 .63 .56 .64 11 HH13TC 1800 1998 .54 .69 .71 .72 .66 .77 .76 12 HH15.SEL 1765 1998 .34 .44 .43 .55 .45 .45 .46 .41 .46 13 HH18.SEL 1790 1998 .49 .46 .50 .46 .47 .51 .62 .72 14 HH19N 1664 1836 .57 .66 .67 .80 .78 .34 .10B 15 HH19N 1853 1998 .78 .81 .80 .44 .11B 16 HH21N 1720 1998 .60 .55 .58 .52 .57 .78 .76 .81 .80 .71 .66 17 HH23.SEL 1783 1997 .31B .39 .60 .55 .54 .46 .44 .51 18 HH24TC 1644 1998 .65 .66 .68 .70 .75 .73 .73 .73 .66 .57 .67 .64 .55 .59 19 HH24'.SE 1634 1967 .29A .33 .41 .53 .50 .34 .31A .41 .62 .65 .57 .55 .52 20 HH25N.SE 1698 1997 .60 .63 .62 .52 .55 .71 .79 .70 .69 .49 .50 .73 21 HH25NE.S 1830 1997 .47B .52 .44 .38 .62 .66 22 HH25SW.S 1766 1998 .19B .24B .46 .56 .42 .32A .37 .47 .45 23 HH26.SEL 1739 1998 .35 .49 .54 .49 .47 .40 .31A .29A .44 .59 24 HH27E 1730 1998 .47 .51 .69 .80 .66 .64 .76 .70 .55 .52 25 HH27N 1730 1998 .60 .65 .73 .77 .65 .61 .75 .74 .57 .50 26 HH28DEAD 1599 1799 .32B .34B .19B .42 .64 .53 .57 .54 27 HH29.SEL 1763 1997 .52 .52 .56 .64 .75 .76 .69 .49 .54 28 HH29'.SE 1790 1996 .64 .55 .47 .47 .53 .36 .48 .58 29 HH29N 1700 1901 .66 .74 .82 .75 .67 .68 .71 .73 30 HH33TC 1785 1985 .65 .63 .65 .72 .76 .79 .55 .51 31 HH34.SEL 1742 1997 .40 .47 .29B .07B .31A .63 .61 .39 .31A .51 32 HH36TC 1644 1943 .70 .69 .79 .80 .79 .80 .71 .48 .44 .53 .52 .60 33 HH36.SEL 1702 1998 .54 .55 .61 .64 .67 .52 .39 .44 .56 .67 .73 34 HH38NW.S 1789 1997 .47 .42 .53 .45 .57 .61 .60 .54 35 HH40.SEL 1743 1997 .64 .67 .65 .50 .51 .66 .68 .69 .63 .52 Av segment correlation .34 .44 .51 .55 .61 .62 .61 .58 .55 .54 .59 .60 .62 .60 .58 .58 PART 7: DESCRIPTIVE STATISTICS: Hawkins Hill Ringwidth 06:44 Wed 12 Apr 2006 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 HH01TC 1659 1998 340 13 1 .593 .44 1.13 .188 .801 .209 2.53 .293 -.041 1 2 HHUNL 1860 1998 139 5 0 .735 .48 1.22 .245 .765 .313 2.65 .456 -.018 1 3 HHO3NDEA 1643 1733 91 4 0 .541 1.18 2.26 .498 .870 .170 2.77 .530 .005 2 4 HH04TC 1823 1998 176 7 0 .734 1.21 2.22 .402 .697 .208 2.58 .460 -.017 1 5 HH05NDEA 1609 1722 114 4 0 .594 .95 2.38 .410 .675 .279 2.64 .489 -.035 1 6 HH05SDEA 1609 1798 190 7 0 .618 .76 2.52 .463 .814 .233 2.63 .500 -.042 1 7 HH08N.SE 1580 1980 401 16 2 .522 .39 .93 .137 .614 .213 2.69 .374 .015 1 8 HH08N'.S 1584 1998 415 16 0 .578 .38 .83 .133 .727 .198 2.60 .394 .005 2 9 HH09.SEL 1830 1998 169 6 0 .661 .40 .95 .146 .447 .284 2.42 .254 -.029 1 10 HH12SDEA 1737 1847 111 4 0 .628 1.23 3.33 .768 .876 .220 2.80 .494 -.008 1 11 HH13TC 1800 1998 199 7 0 .667 .57 1.31 .216 .817 .176 2.71 .340 -.012 1 12 HH15.SEL 1765 1998 234 9 0 .442 .72 1.64 .302 .830 .190 2.52 .330 -.064 3 13 HH18.SEL 1790 1998 209 8 0 .561 .47 .96 .186 .709 .217 2.84 .515 .049 2 14 HH19N 1664 1836 173 7 1 .557 .47 1.56 .280 .849 .219 2.78 .390 -.058 1 15 HH19N 1853 1998 146 5 1 .525 .40 .82 .144 .679 .230 2.60 .475 -.017 2 16 HH21N 1720 1998 279 11 0 .671 .66 1.31 .183 .689 .170 2.78 .432 -.020 1 17 HH23.SEL 1783 1997 215 8 1 .470 .31 .64 .105 .661 .220 2.58 .365 -.028 1 18 HH24TC 1644 1998 355 14 0 .655 .59 1.48 .253 .807 .182 2.79 .421 -.019 1 19 HH24'.SE 1634 1967 334 13 2 .439 .43 1.38 .235 .768 .233 2.62 .372 -.006 2 20 HH25N.SE 1698 1997 300 12 0 .615 .34 .77 .134 .789 .199 2.61 .419 -.026 2 21 HH25NE.S 1830 1997 168 6 1 .514 .28 .64 .104 .517 .261 2.76 .363 -.021 1 22 HH25SW.S 1766 1998 233 9 3 .371 .50 1.18 .193 .581 .247 2.72 .441 .008 1 23 HH26.SEL 1739 1998 260 10 2 .428 .60 1.91 .279 .533 .313 2.75 .407 .003 2 24 HH27E 1730 1998 269 10 0 .621 .42 .93 .192 .897 .178 2.47 .339 .011 2 25 HH27N 1730 1998 269 10 0 .637 .45 1.06 .206 .885 .177 2.48 .320 -.006 2 26 HH28DEAD 1599 1799 201 8 3 .444 .78 2.30 .379 .875 .149 3.00 .484 .028 1 27 HH29.SEL 1763 1997 235 9 0 .604 .81 1.64 .278 .693 .208 2.72 .428 -.018 1 28 HH29'.SE 1790 1996 207 8 0 .501 .41 .91 .180 .663 .276 2.78 .435 .015 1 29 HH29N 1700 1901 202 8 0 .715 .33 .87 .160 .753 .265 2.83 .435 .023 1 30 HH33TC 1785 1985 201 8 0 .640 .40 1.18 .181 .821 .205 2.59 .423 .036 1 31 HH34.SEL 1742 1997 256 10 4 .419 .29 .62 .119 .737 .201 2.74 .405 -.013 2 32 HH36TC 1644 1943 300 12 0 .645 .35 1.63 .288 .898 .290 2.73 .289 .008 1 33 HH36.SEL 1702 1998 297 11 0 .570 .33 .88 .158 .798 .232 2.67 .375 .023 2 34 HH38NW.S 1789 1997 209 8 0 .529 .39 .89 .159 .831 .183 2.76 .360 -.035 2 35 HH40.SEL 1743 1997 255 10 0 .601 .41 .96 .138 .475 .256 2.77 .457 .018 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 8152 313 21 .569 .51 3.33 .220 .739 .220 3.00 .398 -.007