CHENAL DES QUATRE FOURCHES, ALBERTA, CANADA - cana100 Additional Site Information Harold Fritts and Charles Stockton Documentation for hydrologic chronologies collected in the Peace-Athabasca Delta region used to reconstruct water levels of Lake Athabasca (1810-1967). These chronologies were from trees growing along the levees of different rivers in the region, so that they reflect the water levels in the rivers near which they were growing. References: Charles W. Stockton and Harold C. Fritts. 1971. An empirical reconstruction of water levels for Lake Athabasca (1810-1967) by analysis of tree rings. (copy of report given to Henri Grissino-Mayer for his reprint collection and bibliography). Also see: Project Group, 1972. The Peace Athabasca Delta Summary Report. Project Group, Canada. Alberta, Saskatchewan. 144 pp. Available through Queen's Printer, Province of Alberta, 11510. Kingsway Ave, Edmonton, Alberta. COFECHA output: Chronology file name : CANA100.CRN Measurement file name : CANA100.RWL Date checked : 17JUL96 Technician's name : MARIETTE SEKLECKI Supervisor's name : HENRI D. GRISSINO-MAYER Beginning year : 1765 Ending year : 1970 Principal investigators: H.C. FRITTS, C.W. STOCKTON Site name : CHENAL DES QUATRE FOURCHES Site location : ALBERTA, CANADA Species information : PCGL WHITE SPRUCE Latitude : 5847N Longitude : 11127W Elevation : 70 M Series intercorrelation: 0.695 Avg mean sensitivity : 0.243 Avg standard deviation : 0.969 Avg autocorrelation : 0.852 Number dated series : 26 Segment length tested : 50 Number problem segments: 1 Pct problem segments : 0.88 Are there obvious misdated series? NO Number possible misdated series : N/A Percent misdated series : 0.00 Do they affect chronology quality? N/A Recommend withhold from ITRDB? N/A Comments: EXCELLENT HIGH QUALITY CHRONOLOGY PART 5: CORRELATION OF SERIES BY SEGMENTS: 23:33 Wed 17 JUL 1996 Page 5 ----------------------------------------------------------------------------------------------------------------------------------- Correlations of 50-year dated segments, lagged 25 years Flags: A = correlation under 0.3281 but highest as dated; B = correlation higher at other than dated position Seq Series Time_span 1750 1775 1800 1825 1850 1875 1900 1925 1799 1824 1849 1874 1899 1924 1949 1974 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 196011 1877 1970 .80 .89 .90 2 196012 1874 1970 .79 .79 .84 .90 3 196021 1860 1970 .72 .75 .82 .88 4 196022 1861 1970 .67 .77 .74 .91 5 196031 1887 1970 .64 .73 .76 6 196032 1893 1970 .65 .68 .67 7 196041 1871 1970 .69 .74 .85 .91 8 196042 1859 1970 .69 .72 .68 .84 9 196051 1874 1970 .68 .69 .76 .93 10 196052 1869 1970 .78 .81 .90 .95 11 196061 1863 1970 .74 .80 .81 .86 12 196062 1874 1970 .68 .69 .78 .90 13 196071 1870 1970 .71 .75 .85 .79 14 196072 1863 1970 .65 .64 .69 .76 15 196081 1865 1970 .72 .68 .65 .80 16 196082 1863 1970 .50 .47 .51 .85 17 196091 1861 1970 .67 .79 .87 .91 18 196092 1865 1970 .63 .74 .88 .88 19 196101 1856 1970 .48 .63 .78 .93 20 196102 1852 1970 .51 .69 .83 .93 21 196111 1836 1970 .54 .58 .58 .72 .72 22 196112 1831 1970 .48 .56 .55 .67 .87 23 196121 1846 1970 .58 .62 .59 .68 .81 24 196122 1826 1970 .38 .50 .44 .65 .75 25 196131 1765 1970 .85 .89 .58 .20B .34 .37 .51 .82 26 196132 1771 1970 .85 .89 .51 .36 .52 .44 .57 .78 PART 7: DESCRIPTIVE STATISTICS: 23:33 Wed 17 JUL 1996 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 196011 1877 1970 94 3 0 0.849 1.47 4.07 0.977 0.883 0.335 2.06 0.456 -0.027 2 2 196012 1874 1970 97 4 0 0.834 1.63 4.81 1.076 0.877 0.364 1.95 0.381 -0.022 1 3 196021 1860 1970 111 4 0 0.791 1.58 4.04 1.123 0.928 0.282 1.94 0.354 0.000 1 4 196022 1861 1970 110 4 0 0.759 1.58 3.43 0.844 0.876 0.253 1.97 0.351 -0.040 1 5 196031 1887 1970 84 3 0 0.663 2.78 4.91 0.901 0.740 0.185 1.99 0.375 0.014 4 6 196032 1893 1970 78 3 0 0.667 3.03 4.66 0.888 0.649 0.208 1.95 0.390 0.003 2 7 196041 1871 1970 100 4 0 0.781 1.71 5.12 1.234 0.911 0.251 1.91 0.289 -0.043 1 8 196042 1859 1970 112 4 0 0.725 1.59 4.23 1.111 0.931 0.242 1.92 0.370 -0.055 1 9 196051 1874 1970 97 4 0 0.798 1.56 4.69 0.876 0.709 0.330 2.38 0.445 0.020 1 10 196052 1869 1970 102 4 0 0.869 1.73 4.28 1.053 0.840 0.329 2.07 0.412 0.000 1 11 196061 1863 1970 108 4 0 0.791 1.23 4.06 0.868 0.907 0.258 2.16 0.460 0.012 1 12 196062 1874 1970 97 4 0 0.786 1.81 4.95 1.126 0.885 0.280 2.08 0.393 -0.021 1 13 196071 1870 1970 101 4 0 0.751 2.02 4.41 0.826 0.765 0.240 2.06 0.440 0.037 2 14 196072 1863 1970 108 4 0 0.653 1.96 5.30 0.897 0.753 0.236 2.44 0.464 0.074 1 15 196081 1865 1970 106 4 0 0.707 2.37 5.50 1.191 0.911 0.191 1.89 0.287 0.011 1 16 196082 1863 1970 108 4 0 0.628 2.34 9.01 1.257 0.702 0.198 2.61 0.399 0.083 1 17 196091 1861 1970 110 4 0 0.800 1.55 4.08 0.859 0.863 0.261 1.91 0.363 -0.017 1 18 196092 1865 1970 106 4 0 0.775 1.90 4.06 0.926 0.807 0.253 2.00 0.388 0.017 1 19 196101 1856 1970 115 4 0 0.694 1.94 4.68 1.105 0.898 0.233 2.08 0.417 -0.020 1 20 196102 1852 1970 119 4 0 0.715 1.50 3.13 0.755 0.902 0.221 1.95 0.369 0.012 1 21 196111 1836 1970 135 5 0 0.569 1.92 5.28 1.242 0.936 0.218 1.85 0.327 0.012 1 22 196112 1831 1970 140 5 0 0.543 2.36 5.92 1.240 0.912 0.189 1.75 0.253 -0.011 1 23 196121 1846 1970 125 5 0 0.647 1.90 5.61 1.117 0.931 0.167 1.95 0.327 0.025 2 24 196122 1826 1970 145 5 0 0.536 2.24 5.64 1.301 0.928 0.168 1.86 0.317 -0.006 1 25 196131 1765 1970 206 8 1 0.526 1.01 3.11 0.532 0.844 0.242 1.89 0.313 -0.040 2 26 196132 1771 1970 200 8 0 0.609 0.98 2.37 0.436 0.773 0.252 2.00 0.332 0.021 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3014 113 1 0.695 1.77 9.01 0.969 0.852 0.243 2.61 0.365 0.001