Jökull - 01.12.1993, Page 24

a) Pinus
Site name and number 1 2 3 5 6 7 8 Ic. 2 Ic. 3 Gr.l
1. Murmansk 9.42 6.53 6.39 6.66 5.86 4.75 3.86 7.51
2. Karelia 2 69.2' 8.79 6.76 4.76 4.96 5.19 3.39 5.38 3.31
3. Karelia 3 63.2 66.4’ 3.67 3.30 3.27 3.38 1.84 4.72
5. Pinega 57.0 61.4 59.7 7.95 11.52 9.59 7.38 4.54 3.18
6. Arichangelsk 65.5' 65.8’ 62.1 72.0* 9.62 4.70 6.00 3.15
7. Voroncy 61.7 58.1 60.2 71.2* 72.4' 6.70 7.91 4.43 2.85
8. Charijaga 57.5 56.1 57.2 64.2* 60.5 66.5* 7.10 4.21
B/C. Iceland 2 60.6 61.6 59.6 71.5' 66.4' 72.4* 67.0
B/C. Iceland 3 67.8' 63.2’ 63.2 59.1 57.2 4.22
D. Greenland 1 62.3 64.3 61.7 64.3 64.3 69.5
* significance 99.9 %
b) Picea
Site name 4 5 7 8 9 Ic. 4 Gr. 2
4. Arkhangelsk 6.64 11.51 4.34 6.69 8.77 4.19
5. Pinega 68.6' 11.95 7.46 4.91 7.42 4.99
7. Voroncy 76.8' 74.7’ 7.02 6.05 10.26 4.04
8. Charijaga 65.4* 67.6' 63.5 8.67 6.12 4.33
9. Kedvaran 72.9' 65.6 63.1 67.6' 6.64 3.45
B/C. Iceland 4 74.2* 71.1' 71.3* 69.9' 69.3' 6.14
D. Greenland 2 70.0' 73.1' 70.6 71.8* 68.1 68.1*
* significance 99.9 %
Table 2. Correlation values
(t-value: upper right part
of tables and Sign test:
lower left part of tables)
between the chronologies
from the White Sea region
(sites 1 to 9 on Figure 7)
and driftwood mean curves
from Iceland (sites on Fig-
ure 1). a) Pinus, b) Picea.
— Töluleg gildi fyrir sam-
bandið á milli árhringjalínu-
rita frá Hvíta Hafs svæðinu
ogfrá Islandi og Grænlandi.
a) Fura, b) Greni.
MATERIAL
Driftwood samples were collected from three main
areas in Iceland, (1) from the northwest coast at
Strandir in 1988 (41 samples, Figure 1;B), (2) from
the northeast coast, at Langanes, in 1989 (251 sam-
ples, Figures 1;C and 3) and (3) from the southwest
coast, at Reykjanes peninsula in 1993 (51 samples,
Figure 1 ;A). Additionally 25 samples were collected at
Scoresby Sund in East Greenland in 1990 (Figure 1 ;D)
by Christian Hjort (Dept. of Quaternary Geology, Uni-
versity of Lund). All sampled logs were resting on the
recent shore and were collected with a chain saw, one
disk from the thick end of each log (Figure 3b). The
length of each log was measured in the íield.
At the Dept. of Quaternary Geology, University of
Lund, samples were prepared for dendrochronological
study. The tree-rings of each sample were measured
on an Aniol tree-ring measuring machine, connected
to a PC-computer running the CATRAS programme
(Aniol, 1983). Two to four radii were measured on
each sample/log. If the tree-ring series of all the mea-
sured radii were synchronous they were averaged and
one tree-ring curve made for each sample/log. The tree
curves showing high t-values were visually checked by
comparing the graphical plots of the curves. The best
htting ones were used to build up mean tree-ring curves
from the driftwoodsamples (Table 3). All mean curves
presented in this paper were then quality controlled by
the COFECHA program (Holmes et al., 1986).
Samples with poorly developed tree-ring pattern,
or missing tree rings between the different radii were
not included in the analyses.
22 JÖKULL,No. 43, 1993