Driftless Oaks Backbone State Park update, Iowa - IA035 Additional Site Information Evan Larson, Sara Allen, Chris Underwood Reference: Evan R. Larson, Sara A. Allen, Chris A. Underwood. 2020. The Driftless Oaks: A new network of tree-ring chronologies to improve regional perspectives of drought in the Upper Midwest, USA. Progress in Physical Geography, Vol. 45, Issue 3, pp. 375-406, June 2021. doi: 10.1177/0309133320960670 Notes: Backbone State Park update: 42.637N, 91.526W, 337m. Funding Sources: University of Wisconsin Water Resources Institute, University of Wisconsin - Platteville Pioneer Academic Center for Community Engangement WR13R003 COFECHA output: Chronology file name : IA035.CRN Measurement file name : IA035.RWL Date checked : 09AUG21 Checked by : B. Bauer Beginning year : 1771 Ending year : 2017 Principal investigators: E. Larson S. Allen C. Underwood Site name : Driftless Oaks Backbone State Park update Site location : Iowa Species information : QUSP OAK Latitude : 4238 Longitude : -09132 Elevation : 337M Series intercorrelation: 0.584 Avg mean sensitivity : 0.203 Avg standard deviation : 0.407 Avg autocorrelation : 0.602 Number dated series : 30 Segment length tested : 50 Number problem segments: 5 Pct problem segments : 3.94 PART 5: CORRELATION OF SERIES BY SEGMENTS: Backbone update 15:57 Mon 09 Aug 2021 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 1775 1800 1825 1850 1875 1900 1925 1950 1975 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 BBD101a 1790 2017 .47 .50 .38 .40B .56 .46 .40 .37 .38 2 BFP101a 1927 2017 .46 .57 .46 3 BFP306b 1918 2017 .63 .67 .60 .58 4 BPP601a 1914 2017 .59 .62 .56 .37 5 BSP001a 1944 2017 .73 .73 .79 6 BSP001b 1972 2017 .70 7 BSP002a 1948 2017 .66 .68 .62 8 BSP007a 1886 2017 .79 .80 .78 .71 .65 9 BSP007b 1918 2017 .77 .80 .72 .60 10 BSP101a 1919 2017 .38 .39 .41 .67 11 BSP103a 1972 2017 .54 12 BSP103b 1882 2017 .43 .69 .73 .55 .57 13 BSP104a 1865 2017 .62 .65 .65 .68 .66 .56 14 BSP104b 1898 2017 .84 .84 .83 .42 .21B 15 BSP105b 1970 2017 .53 16 BSP106a 1920 2017 .60 .54 .31A .38 17 BSP107a 1867 2017 .87 .83 .82 .75 .57 .35 18 BSP200a 1914 2017 .62 .63 .53 .61 19 BSP200b 1901 2017 .75 .64 .62 .73 20 BSP201a 1865 2017 .56 .57 .78 .72 .73 .76 21 BSP201b 1887 2017 .82 .81 .83 .79 .55 22 BSP203b 1771 2017 .47 .50 .41 .39 .64 .79 .73 .38 .49 23 BSP301b 1915 2017 .70 .77 .69 .59 24 BSP302a 1942 2017 .48 .60 .69 25 BSP302b 1896 2017 .72 .72 .79 .72 .48 26 BSP303b 1958 2017 .64 .58 27 BSP304a 1894 2017 .70 .76 .78 .76 .73 28 BSP305a 1916 2017 .52 .56 .44 .37 29 BSP305b 1888 2017 .73 .70 .28B .23B .48 30 BSP306a 1937 2017 .46 .60 .67 Av segment correlation .47 .50 .39 .57 .69 .69 .64 .58 .55 PART 7: DESCRIPTIVE STATISTICS: Backbone update 15:57 Mon 09 Aug 2021 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 BBD101a 1790 2017 228 9 1 .392 .73 1.41 .204 .622 .186 2.79 .487 -.006 2 2 BFP101a 1927 2017 91 3 0 .465 1.27 2.48 .382 .554 .191 2.70 .524 -.021 1 3 BFP306b 1918 2017 100 4 0 .611 1.26 3.02 .519 .698 .244 2.68 .528 -.018 1 4 BPP601a 1914 2017 104 4 0 .501 1.36 2.14 .354 .441 .213 2.58 .368 -.046 3 5 BSP001a 1944 2017 74 3 0 .713 1.33 2.30 .363 .529 .216 2.67 .504 -.020 2 6 BSP001b 1972 2017 46 1 0 .700 1.69 2.70 .395 .286 .196 2.77 .642 .014 1 7 BSP002a 1948 2017 70 3 0 .603 1.09 1.74 .267 .447 .208 2.63 .563 -.003 2 8 BSP007a 1886 2017 132 5 0 .739 1.07 3.37 .660 .820 .290 2.89 .485 .009 1 9 BSP007b 1918 2017 100 4 0 .699 1.37 2.21 .308 .346 .201 2.72 .533 .000 1 10 BSP101a 1919 2017 99 4 0 .513 1.39 2.19 .369 .526 .215 2.69 .547 .016 1 11 BSP103a 1972 2017 46 1 0 .544 1.88 3.70 .779 .676 .214 2.74 .666 -.058 1 12 BSP103b 1882 2017 136 5 0 .538 1.28 2.53 .362 .573 .193 2.87 .478 .037 1 13 BSP104a 1865 2017 153 6 0 .620 .99 2.17 .367 .723 .206 2.74 .493 -.002 2 14 BSP104b 1898 2017 120 5 1 .604 1.17 1.85 .317 .561 .200 2.60 .512 -.035 1 15 BSP105b 1970 2017 48 1 0 .532 1.61 4.59 .958 .761 .182 2.73 .489 -.062 1 16 BSP106a 1920 2017 98 4 1 .511 1.63 4.45 .694 .725 .212 2.75 .492 -.009 1 17 BSP107a 1867 2017 151 6 0 .672 1.34 2.71 .536 .785 .194 2.90 .583 -.011 1 18 BSP200a 1914 2017 104 4 0 .613 1.52 2.57 .363 .593 .167 2.50 .380 -.076 1 19 BSP200b 1901 2017 117 4 0 .691 1.53 2.80 .395 .575 .187 2.61 .479 -.058 1 20 BSP201a 1865 2017 153 6 0 .657 1.36 2.40 .356 .476 .207 2.48 .347 .016 1 21 BSP201b 1887 2017 131 5 0 .710 1.57 2.86 .431 .545 .199 2.64 .436 -.029 1 22 BSP203b 1771 2017 247 9 0 .483 .98 2.22 .278 .703 .170 2.76 .481 -.019 2 23 BSP301b 1915 2017 103 4 0 .651 1.14 1.95 .296 .464 .207 2.65 .501 -.015 1 24 BSP302a 1942 2017 76 3 0 .527 1.07 1.97 .277 .467 .197 2.60 .406 -.005 1 25 BSP302b 1896 2017 122 5 0 .635 1.12 3.30 .622 .821 .264 2.69 .430 -.011 1 26 BSP303b 1958 2017 60 2 0 .560 1.66 3.21 .510 .564 .207 2.84 .498 -.064 3 27 BSP304a 1894 2017 124 5 0 .721 .97 1.43 .211 .216 .215 2.53 .496 .022 1 28 BSP305a 1916 2017 102 4 0 .426 1.02 3.94 .748 .930 .194 2.44 .346 -.050 1 29 BSP305b 1888 2017 130 5 2 .479 1.19 2.33 .420 .736 .180 2.59 .475 -.004 1 30 BSP306a 1937 2017 81 3 0 .583 1.29 1.88 .243 .420 .169 2.54 .393 -.022 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3346 127 5 .584 1.23 4.59 .407 .602 .203 2.90 .478 -.014