A tree-ring perspective on the extreme wetness of the early 1900’s in the western United States [abstract]
Ring-width indices from 136 sites in the area from northern Montana to southern New Mexico between latitudes 103°W and 111°W were examined to infer periods of anomalous wetness for the years 1700-1964. Sites were grouped into north, central and south regions, and the gross regional tree-ring fluctuations were compared. The results indicate that the period 1905-1917 was unique in the 265-year record for the combined magnitude, duration, and north/south coherence of the growth anomaly of much lesser magnitude occurred in the 1830's-1840's [sic]. Both this and the 1905-1917 anomaly appear from time-series plots to be manifestations of low-frequency growth variations at wave lengths between about 20 and 60 years.
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Format: | conference_item biblioteca |
Language: | English |
Published: |
1986
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Subjects: | Atmospheric Sciences, Earth Sciences, PACLIM, dendrochronology, |
Online Access: | http://hdl.handle.net/1834/30213 |
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