Tanana Bluff, Alaska - ak123 Additional Site Information Andrea Lloyd, Daniel Mann, and Paul Duffy Purpose of Collection: Ecology - collected to study tree growth response to climate Detrending: Horizontal line Cores Stored at: Middlebury College, Middlebury, VT Reference: Lloyd, A. et al. In Review, Canadian Journal of Forest Research NOTES: Third letter (B, F, or U) of the site code represents the topographic position on these steep river bluffs: B=trees towards the base of the bluff, F=trees out on the face of the bluff, and U=trees on the upper bluff. COFECHA output: Chronology file name : AK123.CRN Measurement file name : AK123.RWL Date checked : 19SEP12 Checked by : B. Bauer Beginning year : 1851 Ending year : 2009 Principal investigators: Andrea Lloyd Daniel Mann Paul Duffy Site name : Tanana Bluff Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : 6343 Longitude : -14409 Elevation : 437M Series intercorrelation: 0.689 Avg mean sensitivity : 0.279 Avg standard deviation : 0.421 Avg autocorrelation : 0.617 Number dated series : 20 Segment length tested : 50 Number problem segments: 3 Pct problem segments : 4.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: Tanana Bluff 12:01 Wed 19 Sep 2012 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 1850 1875 1900 1925 1950 1975 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 TBF010 1946 2009 .50 .58 .72 2 TBF009 1953 2009 .62 .69 3 TBF008 1955 2009 .78 .82 4 TBF007 1906 2009 .77 .76 .82 .81 5 TBF006 1910 2009 .56 .64 .77 .81 6 TBF005 1954 2009 .77 .82 7 TBF004 1949 2009 .79 .78 .84 8 TBF003 1964 2009 .28A 9 TBF002 1950 2009 .68 .81 10 TBF001 1906 2009 .46 .50 .66 .85 11 TBU010 1851 2009 .25A .64 .82 .78 .37 .34 12 TBU009 1891 2009 .61 .71 .74 .85 .87 13 TBU008 1906 2009 .71 .73 .83 .86 14 TBU007 1911 2009 .59 .80 .84 .87 15 TBU006 1852 2009 .35 .69 .82 .86 .87 .88 16 TBU005 1911 2009 .62 .83 .90 .91 17 TBU004 1920 2009 .42 .64 .88 .92 18 TBU003 1917 2009 .35 .66 .81 .87 19 TBU002 1890 2009 .46 .69 .69 .75 .74 20 TBU001 1851 2009 .25B .59 .69 .89 .85 .84 Av segment correlation .28 .60 .63 .72 .74 .80 PART 7: DESCRIPTIVE STATISTICS: Tanana Bluff 12:01 Wed 19 Sep 2012 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 TBF010 1946 2009 64 3 0 .599 .98 1.97 .399 .374 .391 2.52 .450 .046 1 2 TBF009 1953 2009 57 2 0 .661 .97 2.54 .572 .478 .464 2.79 .552 .045 1 3 TBF008 1955 2009 55 2 0 .816 .97 2.37 .474 .385 .467 2.72 .555 .055 1 4 TBF007 1906 2009 104 4 0 .764 .98 2.07 .395 .526 .352 2.50 .420 -.073 1 5 TBF006 1910 2009 100 4 0 .710 .99 2.00 .376 .694 .279 2.49 .408 -.017 1 6 TBF005 1954 2009 56 2 0 .809 .98 2.26 .456 .668 .313 2.74 .653 -.017 1 7 TBF004 1949 2009 61 3 0 .788 1.00 2.23 .399 .488 .322 2.65 .427 .036 1 8 TBF003 1964 2009 46 1 1 .284 .99 2.46 .466 .560 .367 2.80 .607 .045 1 9 TBF002 1950 2009 60 2 0 .715 .98 1.99 .416 .504 .355 2.84 .557 .010 1 10 TBF001 1906 2009 104 4 0 .652 .99 2.31 .416 .388 .390 2.59 .389 -.039 1 11 TBU010 1851 2009 159 6 1 .461 .92 2.33 .534 .856 .265 2.53 .392 -.053 1 12 TBU009 1891 2009 119 5 0 .765 .98 1.86 .290 .561 .219 2.55 .392 -.023 1 13 TBU008 1906 2009 104 4 0 .801 .98 1.82 .310 .620 .237 2.52 .421 -.035 1 14 TBU007 1911 2009 99 4 0 .774 .98 1.76 .291 .549 .232 2.30 .302 -.031 1 15 TBU006 1852 2009 158 6 0 .748 .99 2.62 .636 .894 .224 2.55 .346 -.051 1 16 TBU005 1911 2009 99 4 0 .809 .98 1.68 .312 .632 .226 2.47 .398 -.031 1 17 TBU004 1920 2009 90 4 0 .722 1.00 1.49 .191 .251 .177 2.38 .378 -.022 2 18 TBU003 1917 2009 93 4 0 .672 .99 1.96 .290 .624 .212 2.54 .410 -.084 1 19 TBU002 1890 2009 120 5 0 .598 .98 1.86 .311 .593 .228 2.59 .447 -.047 2 20 TBU001 1851 2009 159 6 1 .656 .98 3.22 .672 .880 .237 2.51 .375 -.074 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 1907 75 3 .689 .98 3.22 .421 .617 .279 2.84 .420 -.030