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A 1000 years of bi-decadal oscillation recorded by a bur oak ( Quercus macrocarpa ) chronology. bur oak & soy beans. Cook et al. 1997 . Stambaugh et al. 2011 . 2000. 1000. Title: Bi-decadal Drought Rhythm IIII ; Species: bur oak ( Quercus macrocarpa ); Period: 992 to 2010 AD;
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A 1000 years of bi-decadal oscillation recorded by a bur oak (Quercusmacrocarpa) chronology bur oak & soy beans Cook et al. 1997 Stambaugh et al. 2011 2000 1000
Title: Bi-decadal Drought Rhythm IIII; Species: bur oak (Quercusmacrocarpa); Period: 992 to 2010 AD; Temporal Axis: 1092 years in 57 seconds, ratio: 19 yrs-1 s-1; Acoustic Axis: increased growth (mm) = increased pitch (Hz) and duration (s); Location: Northern Missouri floodplains, US; Time series type: spline filtered ring-width index; Data: Stambaugh et al. 2011.