Upper Walhalla Plateau, North Rim, Grand Canyon National Park, Arizona - AZ561 Additional Site Information J.J. Wolf and J.N. Mast Purpose of Collection: Event - fire Detrend Method: horizontal trend Walhalla Plateau has a gradual slope that ranges from 2200 m in the lower southern edge to 2700 m in the upper northern region. The Walhalla Plateau is separated from the rest of North Rim by the Bright Angel fault. Ponderosa pine stands occur at the lower elevational southern points of the Plateau shifting to a lower mixed-conifer forest at 2500 m. Reference: Wolf, J. and J. N. Mast. 1998. Fire History in mixed-conifer forests of the North Rim, Grand Canyon National Park, Physical Geography, 19(1):1-14. COFECHA output: Chronology file name : AZ561.CRN Measurement file name : AZ561.RWL Date checked : 10MAR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 0 Ending year : 338 Principal investigators: J.J. Wolf J.N. Mast Site name : Upper Walhalla Plateau, North Rim, Grand Canyon NP Site location : Arizona Species information : PIPO PONDEROSA PINE Latitude : 3607 Longitude : -11152 Elevation : 2700M Series intercorrelation: -0.004 Avg mean sensitivity : 0.276 Avg standard deviation : 1.099 Avg autocorrelation : 0.812 Number dated series : 18 Segment length tested : 50 Number problem segments: 110 Pct problem segments : 100.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: az561.rwl 16:48 Thu 10 Mar 2005 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 0 25 50 75 100 125 150 175 200 225 250 49 74 99 124 149 174 199 224 249 274 299 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 WM5-4 0 208 -.11B-.31B-.28B-.20B-.10B .04B-.06B-.14B 2 WM3-2 0 65 -.17B .02B 3 wm5-3 0 124 -.09B .18B .08B .02B 4 WM5-2 0 338 .08B .02B .05B .20B .02B .03B-.03B .04B .10B-.18B-.14B 5 wm4-3 0 112 .06B .06B .05B .04B 6 wm4-2 0 103 -.01B .04B .09B .08B 7 WM3r2 0 279 -.10B-.18B-.14B-.26B-.25B .12B .11B .14B .04B-.19B-.19B 8 wm3-r1 0 183 .18B .17B .02B-.06B .10B .07B-.02B 9 wm3-4 1 153 .07B .05B .10B .21B .07B .00B 10 WM3-2B 0 212 -.02B .07B-.24B-.28B-.15B-.10B .00B .12B 11 wm3-1 0 280 -.10B .12B .03B .06B .10B-.05B-.06B .16B .01B-.18B-.13B 12 wm2-rD 0 79 .07B .10B .02B 13 wm2-3 0 108 -.15B .11B .24B .21B 14 WM2-1A 0 217 .02B-.15B-.18B-.03B-.11B-.15B .02B .13B 15 wm1-3 0 193 -.05B .31A .08B-.13B-.17B .10B .13B 16 wm1-1 0 77 -.03B .04B .02B 17 WM4-R1 0 142 .05B .02B-.17B-.08B-.06B 18 wm4-3 0 112 -.07B .03B .20B .21B Av segment correlation -.02 .04 .00 .00 -.05 .01 .01 .08 .05 -.18 -.15 PART 7: DESCRIPTIVE STATISTICS: az561.rwl 16:48 Thu 10 Mar 2005 Page 7 ------------------------------------------------------------------------------------------------------------------------------------ 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 WM5-4 0 208 209 8 8 -.142 1.61 5.31 .966 .830 .257 2.57 .329 -.003 1 2 WM3-2 0 65 66 2 2 -.101 3.17 5.07 .882 .472 .231 2.76 .505 -.024 1 3 wm5-3 0 124 125 4 4 .032 2.20 6.35 1.451 .840 .290 2.60 .475 -.065 1 4 WM5-2 0 338 339 11 11 -.001 2.56 8.47 1.567 .893 .235 2.73 .370 -.022 1 5 wm4-3 0 112 113 4 4 .034 1.23 2.95 .767 .857 .304 2.46 .319 -.045 1 6 wm4-2 0 103 104 4 4 .042 1.53 4.79 .831 .759 .260 2.52 .400 .019 1 7 WM3r2 0 279 280 11 11 -.041 1.85 4.71 1.015 .820 .251 2.64 .372 -.030 2 8 wm3-r1 0 183 184 7 7 .055 1.48 3.11 .695 .630 .324 2.94 .374 .022 1 9 wm3-4 1 153 153 6 6 .058 1.97 6.60 1.239 .839 .261 2.63 .426 -.032 2 10 WM3-2B 0 212 213 8 8 -.049 1.90 5.15 1.161 .828 .274 2.43 .355 -.017 1 11 wm3-1 0 280 281 11 11 .004 1.47 4.93 1.026 .884 .275 2.53 .310 -.009 1 12 wm2-rD 0 79 80 3 3 .097 1.84 3.66 .781 .794 .233 2.69 .486 -.029 2 13 wm2-3 0 108 109 4 4 .079 1.67 5.36 1.570 .935 .301 2.60 .454 -.052 1 14 WM2-1A 0 217 218 8 8 -.047 2.10 8.35 1.795 .881 .302 2.82 .407 -.053 1 15 wm1-3 0 193 194 7 7 .037 1.03 2.23 .445 .700 .273 2.56 .382 -.006 1 16 wm1-1 0 77 78 3 3 -.003 1.53 4.30 .724 .558 .339 2.85 .450 .032 2 17 WM4-R1 0 142 143 5 5 -.036 1.66 5.19 1.163 .787 .353 2.64 .460 -.070 1 18 wm4-3 0 112 113 4 4 .049 1.21 3.26 .726 .886 .255 2.43 .380 -.041 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3002 110 110 -.004 1.79 8.47 1.099 .812 .276 2.94 .387 -.023