Copper River Delta spruce B, Alaska - AK172 Additional Site Information David Barclay Elowyn Yager Jason Graves Michael Kloczko Reference: David J. Barclay, Elowyn M. Yager, Jason Graves, Michael Kloczko, Parker E. Calkin. 2013. Late Holocene glacial history of the Copper River Delta, coastal south-central Alaska, and controls on valley glacier fluctuations. Quaternary Science Reviews, Vol. 81, pp. 74-89, 1 December 2013. DOI: 10.1016/j.quascirev.2013.10.001 Keywords: glacier history, Holocene, first millennium CE NOTES: Chronology of subfossil samples used to reconstruct the late Holocene history of valley glaciers on the Copper River Delta. Funding: US National Science Foundation 9912124, 9905493 COFECHA output: Chronology file name : AK172.CRN Measurement file name : AK172.RWL Date checked : 17OCT19 Checked by : B. Bauer Beginning year : 235 Ending year : 599 Principal investigators: David Barclay Elowyn Yager Jason Graves Michael Kloczko Site name : Copper River Delta spruce B Site location : Alaska Species information : PCSI SITKA SPRUCE Latitude : 6051 Longitude : -14535 Elevation : 60M Series intercorrelation: 0.557 Avg mean sensitivity : 0.172 Avg standard deviation : 0.419 Avg autocorrelation : 0.895 Number dated series : 16 Segment length tested : 50 Number problem segments: 7 Pct problem segments : 5.93 PART 5: CORRELATION OF SERIES BY SEGMENTS: Copper River Delta spruce B 11:12 Thu 17 Oct 2019 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 250 275 300 325 350 375 400 425 450 475 500 525 550 299 324 349 374 399 424 449 474 499 524 549 574 599 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 SH52B 297 599 .61 .60 .75 .63 .63 .53 .44 .50 .65 .81 .66 .57 2 SH55C1 270 559 .45 .50 .57 .48 .35 .54 .52 .55 .43 .48 .70 .59 3 SH55C2 292 558 .63 .67 .64 .36 .39 .48 .53 .60 .79 .65 .48 4 SH55M1 235 537 .42 .44 .56 .52 .34 .44 .54 .48 .50 .66 .70 5 SH55M2 472 599 .33B .37 .32B .46 .59 6 SH71A 346 574 .49 .49 .78 .59 .54 .70 .74 .74 .68 7 SH71B 316 510 .61 .64 .66 .63 .58 .47 .40 .43 8 SH81A1 443 553 .20B .23B .49 .63 .63 9 SH81A2 473 564 .58 .56 .73 .70 10 SH81B 387 506 .46 .65 .57 .45 .50 11 SH81C1 459 569 .56 .69 .79 .66 12 SH81C2 391 569 .23B .16B .34 .66 .75 .75 .63 13 SH81D 394 557 .67 .67 .71 .73 .79 .81 .76 14 SH81E 349 558 .50 .50 .67 .65 .62 .75 .84 .87 .70 15 SH81G 458 565 .54 .60 .64 .62 16 SH81I 424 539 .14B .34 .61 .68 .72 Av segment correlation .44 .54 .60 .57 .48 .54 .50 .48 .54 .63 .70 .63 .58 PART 7: DESCRIPTIVE STATISTICS: Copper River Delta spruce B 11:12 Thu 17 Oct 2019 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 SH52B 297 599 303 12 0 .594 .50 1.36 .255 .912 .172 2.67 .367 -.022 5 2 SH55C1 270 559 290 12 0 .486 .46 1.70 .237 .924 .147 2.57 .342 .005 1 3 SH55C2 292 558 267 11 0 .540 .62 1.51 .319 .923 .141 2.62 .409 -.044 1 4 SH55M1 235 537 303 11 0 .485 .75 3.43 .492 .911 .189 2.56 .283 -.058 1 5 SH55M2 472 599 128 5 2 .437 .71 2.31 .385 .894 .162 2.57 .353 .060 7 6 SH71A 346 574 229 9 0 .654 .83 2.12 .407 .935 .141 2.66 .452 -.027 1 7 SH71B 316 510 195 8 0 .532 .79 1.91 .374 .815 .230 2.47 .298 -.033 1 8 SH81A1 443 553 111 5 2 .448 1.42 3.73 .573 .794 .190 2.65 .514 .008 1 9 SH81A2 473 564 92 4 0 .600 1.15 2.44 .604 .898 .199 2.60 .550 -.041 2 10 SH81B 387 506 120 5 0 .494 1.05 2.34 .590 .941 .146 2.46 .359 -.034 2 11 SH81C1 459 569 111 4 0 .653 .68 1.46 .303 .863 .178 2.60 .568 -.075 1 12 SH81C2 391 569 179 7 2 .528 .79 1.78 .341 .843 .185 2.72 .436 -.012 1 13 SH81D 394 557 164 7 0 .734 .98 2.44 .549 .889 .189 2.69 .504 -.024 1 14 SH81E 349 558 210 9 0 .639 1.15 2.69 .513 .853 .189 2.64 .329 -.019 1 15 SH81G 458 565 108 4 0 .577 1.01 2.78 .603 .935 .152 2.48 .387 .011 1 16 SH81I 424 539 116 5 1 .495 1.03 3.41 .705 .932 .172 2.51 .379 -.024 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2926 118 7 .557 .80 3.73 .419 .895 .172 2.72 .390 -.023