ИСТИНА

In the last decades the vast tree-ring network was developed in the Solovki Islands and is consisted of living tree material, architectural wood and drift-wood. A delta blue Intensity (dBI) were measured for 363 tree-ring samples. The dBI measurements of 185 tree-ring series of living conifer trees were combined into regional chronology since both conifers showed the same positive sensitivity to summer temperatures. dBI series obtained from historical buildings (131 samples) were successfully cross-dated against regional chronology and as a result chronology starts since 1186 CE. Since EPS >0.85 starts in 1417 CE, a drift-wood were used as another source of wooden material to increase the length and sample size of the chronology. Drift-wood material were collected from the Northern shore of the Anzer Island. Most of the trees were located at the first sea terrace, and only 10 trunks covered by mosses were located at the second sea terrace. The dBI measurements for the 1st terrace drift-wood were crossdated and the tree death dates range between from the beginning to the middle of the 20th century. Despite the modern age, some samples showed more than 300 years length which is increased the replication in the chronology. Nevertheless 5 drift-wood samples showed promising dating results. Dates of death range from beginning to the middle of the 19th century. We also have showed how differs our cross-dating results when using two parameters - dBI and ring-width. It was shown that dBI series of drift-wood significantly better cross-dated.