Blowdown in shelterwood, sanitation cuts, and other partial cuts on the Kings River Ranger District, Sierra National Forest, are due to Mono winds. Both winter storm and Mono winds were considered as causes of winter blowdown. All evidence, e.g., direction of tree-fall and occurrence of high wind events, point to Mono wind events as the cause of blowdown. Only 12 percent of Mono wind events cause blowdown. Windspeed during a Mono wind (northeast winds) blowdown averages 50 mi/h with gusts to 100 milh. The probability of a blowdown occurring is about once per year, with some years having multiple blowdowns and other years having none.Figure 3 a Predominant root-to-crown direction of fallen trees on the Sierra National Forest in southern California. ... These data for Santa Ana winds may be extrapolated to Mono winds based on the corresponding macroscale weather conditions for both wind types. ... Cambridge, MA: Harvard University Press; 1959 . 449 panbsp;...
|Title||:||Windthrown trees on the Kings River Ranger District, Sierra National Forest|
|Author||:||Michael A. Fosberg, Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)|