Tree ring information and rainfall characteristic for landslide in the Kobe District, Japan
作者:
Kenji Kashiwaya,
Takashi Okimura And,
Takeshi Kawatani,
期刊:
Earth Surface Processes and Landforms
(WILEY Available online 1989)
卷期:
Volume 14,
issue 1
页码: 63-71
ISSN:0197-9337
年代: 1989
DOI:10.1002/esp.3290140106
出版商: John Wiley&Sons, Ltd
关键词: Heavy rainfall;Landslide;Tree ring;Dendrogeomorphology
数据来源: WILEY
摘要:
AbstractHeavy rainfall on the south side of the Rokko Mountains has often caused severe landslides and debris flows. Analysis of the annual summation of rainfall in excess of 100 mm/day shows that the rainfall in this area has dominant periodicities of about 25–30, 10–13, and 5–7 years. The period of about 25–30 years corresponds to that of occurrence of the natural disasters produced by heavy rainfall; years when the maximum rainfall correspond to years when there have been severe landslides and debris flows in the area. Temporal change in this rainfall may provide a first approximation for erosional force. Analyses of tree ring width from these mountains indicate that the sequences have a dominant periodicity of about 25–30 years. Cross‐spectral analyses for rainfall and ring width in this area show high coherency for the periods of about 25–30 years; evidence that variations in the ring width may be used as proxy data for er
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