February T(°C) 



a. 

 m 



> 



I — I S.E. of equation 



^ ob range (0-25 y. B.P.) 



H est. range 



(20-7000 y. B.P.) 



PISIAS GSO/URI 



Figure 34. — February sea-surface temperatures for the Santa Barbara Basin. S.E. = standard error of estimates, ob Range = ob- 

 served temperature range for the southern California borderland from historical hydrographic data, est. range = esti - 

 mated range for the last 7,000 years. Shaded areas in column to right indicate time of alpline advances during the Holo- 

 cene (Denton and Karlen 1971). Top of time bar equals 1,850 A.D. Left figure is raw data, right figure is low pass filter- 

 ed with three-point moving average. 



51 



