Babe Creek Valley Bottom, Alaska - ak136 Additional Site Information J.M. Wolken, D.H. Mann, A.H. Lloyd Purpose of Collection: Ecology Cores Stored at: University of Alaska Fairbanks NOTES: Data include raw treering measurements of annual ring width for multiple treering samples collected from the Valley bottom location of the Babe Creek toposequence to study the climate-growth relationships of black spruce. Dated series were visually and then statistically crossdated with the program COFECHA. COFECHA output: Chronology file name : AK136.CRN Measurement file name : AK136.RWL Date checked : 27AUG13 Checked by : B. Bauer Beginning year : 1857 Ending year : 2012 Principal investigators: J.M. Wolken D.H. Mann A.H. Lloyd Site name : Babe Creek Valley Bottom Site location : Alaska Species information : PCMA BLACK SPRUCE Latitude : 6500 Longitude : -14740 Elevation : 300M Series intercorrelation: 0.474 Avg mean sensitivity : 0.219 Avg standard deviation : 0.300 Avg autocorrelation : 0.851 Number dated series : 26 Segment length tested : 50 Number problem segments: 13 Pct problem segments : 11.61 PART 5: CORRELATION OF SERIES BY SEGMENTS: Babe Creek Valley Bottom 14:52 Tue 27 Aug 2013 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 002602B 1873 2010 .41 .36 .45 .40 .28A .29A 2 002608A 1875 2010 .49 .73 .69 .72 .69 3 002608B 1887 2010 .53 .54 .56 .58 .60 4 002609A 1938 2009 .46 .50 .52 5 002609B 1930 2009 .35 .35 .28A 6 002610A 1940 2010 .46 .45 .55 7 002610B 1942 2010 .51 .58 .65 8 002612A 1919 2010 .60 .65 .51 .56 9 002612B 1895 2010 .55 .59 .65 .43 .47 10 002616A 1905 2010 .54 .61 .56 .55 11 002616B 1894 2010 .49 .52 .65 .60 .59 12 002617A 1950 2010 .32B .24B 13 002618B 1913 2010 .52 .35 .29A .28A 14 002620A 1881 2010 .37 .46 .50 .54 .41 15 0026C01A 1920 2012 .72 .77 .75 .55 16 0026C01B 1920 2012 .60 .63 .63 .63 17 0026C01C 1920 2012 .55 .57 .54 .49 18 0026C02A 1929 2012 .48 .54 .48 19 0026C02B 1929 2012 .38 .47 .38 20 0026C02C 1929 2012 .65 .52 .39 21 0026C04A 1857 2012 .69 .65 .44 .45 .42 .21A 22 0026C04B 1857 2012 .68 .62 .41 .46 .42 .37 23 0026C04C 1858 2012 .51 .58 .64 .45 .21B .18B 24 0026C04D 1857 2012 .74 .57 .47 .43 .46 .56 25 0026C05A 1875 2012 .29A .30A .30A .48 .52 26 0026C05B 1875 2012 .46 .44 .51 .63 .55 Av segment correlation .61 .50 .53 .52 .49 .46 PART 7: DESCRIPTIVE STATISTICS: Babe Creek Valley Bottom 14:52 Tue 27 Aug 2013 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 002602B 1873 2010 138 6 2 .343 .27 .75 .153 .823 .200 2.66 .447 -.069 1 2 002608A 1875 2010 136 5 0 .595 .32 1.00 .222 .884 .235 3.08 .459 -.006 1 3 002608B 1887 2010 124 5 0 .550 .31 1.11 .201 .869 .221 2.87 .532 -.008 1 4 002609A 1938 2009 72 3 0 .458 .39 .97 .168 .767 .193 2.96 .564 .095 1 5 002609B 1930 2009 80 3 1 .345 .32 1.03 .228 .917 .223 2.85 .606 .008 1 6 002610A 1940 2010 71 3 0 .499 .52 1.25 .308 .882 .237 2.62 .498 .016 2 7 002610B 1942 2010 69 3 0 .567 .43 .83 .191 .789 .217 2.63 .460 -.027 1 8 002612A 1919 2010 92 4 0 .594 .32 1.26 .262 .903 .259 2.91 .558 -.114 1 9 002612B 1895 2010 116 5 0 .506 .26 1.09 .175 .813 .223 2.85 .446 -.006 1 10 002616A 1905 2010 106 4 0 .556 .30 .96 .153 .795 .234 2.79 .557 -.071 1 11 002616B 1894 2010 117 5 0 .550 .31 .78 .144 .703 .260 2.73 .484 -.010 1 12 002617A 1950 2010 61 2 2 .331 .41 1.49 .306 .886 .206 2.86 .577 -.039 1 13 002618B 1913 2010 98 4 2 .411 .47 1.09 .232 .868 .178 2.52 .372 .049 2 14 002620A 1881 2010 130 5 0 .388 .23 .99 .185 .893 .240 3.06 .520 -.042 1 15 0026C01A 1920 2012 93 4 0 .561 .43 1.39 .218 .775 .243 2.81 .556 .026 2 16 0026C01B 1920 2012 93 4 0 .578 .46 1.06 .180 .640 .258 2.62 .523 -.065 1 17 0026C01C 1920 2012 93 4 0 .486 .41 .99 .183 .746 .248 2.70 .479 -.085 1 18 0026C02A 1929 2012 84 3 0 .480 .85 1.88 .397 .843 .204 2.59 .470 -.010 2 19 0026C02B 1929 2012 84 3 0 .335 .83 2.46 .632 .894 .243 2.77 .504 -.057 1 20 0026C02C 1929 2012 84 3 0 .473 .78 2.03 .512 .881 .208 2.72 .479 .029 1 21 0026C04A 1857 2012 156 6 1 .457 .47 2.26 .439 .899 .246 2.76 .479 .015 2 22 0026C04B 1857 2012 156 6 0 .479 .62 3.05 .632 .957 .208 2.63 .376 -.026 4 23 0026C04C 1858 2012 155 6 2 .408 .41 1.92 .433 .947 .239 2.77 .467 -.050 1 24 0026C04D 1857 2012 156 6 0 .574 .75 3.23 .680 .949 .181 2.78 .422 -.001 2 25 0026C05A 1875 2012 138 5 3 .329 .41 1.10 .220 .876 .157 2.82 .516 -.002 1 26 0026C05B 1875 2012 138 5 0 .464 .32 .68 .102 .761 .171 2.78 .482 -.022 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2840 112 13 .474 .44 3.23 .300 .851 .219 3.08 .486 -.019