Le. Heusser et F. Sirocko, MILLENNIAL PULSING OF ENVIRONMENTAL-CHANGE IN SOUTHERN CALIFORNIA FROM THE PAST 24 KY - A RECORD OF INDO-PACIFIC ENSO EVENTS, Geology, 25(3), 1997, pp. 243-246
Century-long variations in coastal California vegetation inferred from
polliniferous sediments deposited in the Santa Barbara basin record a
succession of brief (<200 yr duration) climatic events that recurred
at similar to 1000 yr intervals (8.8, 10.4, 11.2, 12.1, 12.7, 13.4, 13
.9, 14.6, 15.4, 16.1, and 17.1 x 1000 C-14 yr B.P. [ka]). These millen
nial-scale pulses, many of which correspond with western Great Basin h
ydrological fluctuations, are also linked to events of southwest monso
on intensification in southern Asia, We suggest that these correlative
high-frequency variations in the Asian summer and northeast Pacific w
inter climates may reflect submillennial-scale El Nino/Southern Oscill
ation (ENSO)-type forcing involving water vapor transport over the Ind
ian and Pacific Oceans.