Hidden Valley, New Zealand - newz083 Additional information John Ogden and Gretel Boswijk Purpose of Collection: Ecology - age structure Detrend method: ARSTAN: Smoothing spline with 200 cutoff Cores are stored at: Tree-Ring Lab School of Geography, Geology and Environmental Science The University of Auckland 10 Symonds Street Auckland, New Zealand Cores available to view at the lab. References: Cores collected for climatology research by Ogden in 1999 and revisited by Ogden and Boswijk in 2004. See, Boswijk, G. and Ogden, J. 2005. Tree-ring analysis of kauri (Agathis australis) from Hidden Valley, Great Barrier Island. School of Geography, Geology and Environmental Science Working Paper 31, The University of Auckland. For further details see: Fowler, A.M., Boswijk, G., Gergis, J. and Lorrey, A. 2008. ENSO history recorded in Agathis australis (kauri) tree rings: Part A: kauri's potential as an ENSO proxy. International Journal of Climatology 28: 1-20 COFECHA output: Chronology file name : NEWZ083.CRN Measurement file name : NEWZ083.RWL Date checked : 20FEB09 Checked by : B. Bauer Beginning year : 1679 Ending year : 2002 Principal investigators: John Ogden Gretel Boswijk Site name : Hidden Valley Site location : New Zealand Species information : AGAU KAURI PINE Latitude : -3612 Longitude : 17526 Elevation : 220M Series intercorrelation: 0.573 Avg mean sensitivity : 0.302 Avg standard deviation : 0.757 Avg autocorrelation : 0.798 Number dated series : 20 Segment length tested : 50 Number problem segments: 9 Pct problem segments : 4.52 PART 5: CORRELATION OF SERIES BY SEGMENTS: Hidden Valley 14:48 Fri 20 Feb 2009 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 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 HID001A 1743 1997 .61 .61 .64 .59 .66 .45 .50 .73 .79 .72 2 HID001B 1718 1997 .60 .68 .73 .54 .51 .69 .46 .46 .47 .58 .64 3 HID001C 1743 2002 .50 .49 .50 .50 .58 .47 .54 .66 .62 .57 .57 4 HID002A 1685 1980 .60 .60 .62 .65 .71 .64 .60 .66 .71 .76 .78 .65 5 HID002B 1706 1997 .76 .74 .76 .70 .23A .33 .67 .72 .79 .82 .75 6 HID002C 1682 1912 .63 .73 .70 .76 .63 .39 .43 .49 .66 7 HID003A 1726 1997 .58 .65 .55 .52 .69 .56 .59 .74 .74 .77 8 HID003B 1704 1997 .67 .72 .74 .72 .61 .69 .70 .67 .68 .67 .67 9 HID003C 1696 2002 .78 .79 .82 .82 .69 .61 .72 .69 .71 .79 .80 .79 .78 10 HID004A 1679 1905 .56 .70 .67 .44 .30B .56 .69 .59 .64 11 HID004B 1763 1901 .43 .34 .35 .59 .45 .46 12 HID004C 1710 2002 .33 .65 .62 .61 .53 .65 .73 .76 .73 .64 .65 .63 13 HID005A 1733 1997 .40 .40 .46 .51 .58 .66 .60 .46 .60 .67 14 HID005B 1753 1997 .34 .29A .24A .31A .44 .64 .56 .59 .69 15 HID005C 1720 1908 .30A .37 .49 .41 .42 .47 .51 .57 16 HID006A 1748 2002 .51 .51 .49 .59 .67 .31A .48 .68 .68 .84 .86 17 HID006B 1790 2002 .47 .47 .51 .46 .67 .68 .57 .65 .62 18 HID007A 1691 1900 .40 .53 .58 .61 .64 .59 .67 .58 .58 19 HID008A 1765 2002 .58 .45 .58 .39 .24A .50 .58 .67 .54 .51 20 HID008B 1694 1885 .33 .30A .52 .70 .47 .52 .54 .55 Av segment correlation .55 .57 .60 .60 .53 .50 .57 .53 .60 .67 .68 .69 .66 PART 7: DESCRIPTIVE STATISTICS: Hidden Valley 14:48 Fri 20 Feb 2009 Page 9 ----------------------------------------------------------------------------------------------------------------------------------- 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 HID001A 1743 1997 255 10 0 .581 1.30 3.60 .837 .833 .313 2.70 .316 -.039 7 2 HID001B 1718 1997 280 11 0 .557 1.25 3.62 .793 .809 .347 2.60 .300 -.038 7 3 HID001C 1743 2002 260 11 0 .539 1.31 3.91 .854 .826 .342 2.60 .389 -.034 4 4 HID002A 1685 1980 296 12 0 .647 1.19 3.09 .545 .686 .311 2.68 .385 .021 2 5 HID002B 1706 1997 292 11 1 .648 1.23 3.72 .614 .790 .247 2.54 .314 -.010 1 6 HID002C 1682 1912 231 9 0 .607 1.25 4.21 .647 .770 .332 2.80 .515 -.019 3 7 HID003A 1726 1997 272 10 0 .635 1.26 3.03 .710 .777 .355 2.58 .371 -.017 5 8 HID003B 1704 1997 294 11 0 .674 1.23 3.57 .667 .777 .322 2.61 .380 -.061 1 9 HID003C 1696 2002 307 13 0 .743 1.17 3.12 .642 .791 .297 2.68 .488 -.044 1 10 HID004A 1679 1905 227 9 1 .575 1.31 2.73 .486 .780 .198 2.65 .395 -.077 1 11 HID004B 1763 1901 139 6 0 .452 1.70 4.89 1.204 .941 .238 2.59 .362 -.071 1 12 HID004C 1710 2002 293 12 0 .564 1.18 3.64 .732 .871 .276 2.66 .355 -.067 6 13 HID005A 1733 1997 265 10 0 .509 1.36 3.42 .737 .870 .234 2.87 .364 -.016 1 14 HID005B 1753 1997 245 9 3 .450 1.43 4.52 .966 .924 .230 2.79 .473 -.032 1 15 HID005C 1720 1908 189 8 1 .437 1.65 4.21 .834 .883 .205 2.55 .330 .008 1 16 HID006A 1748 2002 255 11 1 .510 1.31 3.89 .875 .684 .456 2.66 .399 -.069 3 17 HID006B 1790 2002 213 9 0 .570 1.59 7.18 1.430 .904 .312 2.70 .329 -.020 1 18 HID007A 1691 1900 210 9 0 .541 1.37 4.34 .737 .779 .266 2.67 .339 -.038 1 19 HID008A 1765 2002 238 10 1 .520 1.31 3.84 .666 .693 .352 2.54 .325 -.058 3 20 HID008B 1694 1885 192 8 1 .502 .98 2.52 .490 .647 .340 2.64 .365 -.025 4 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 4953 199 9 .573 1.30 7.18 .757 .798 .302 2.87 .376 -.035