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318 Geo-Mar Lett (2008) 28:309–325

Table 7 Monte Cofano isotope and temperature (°C) data
18
Month Edge δ O SHELL Calculated Mean SST Difference between Mean monthly Difference between
18
value (‰ VPDB) δ O SHELL measured at measured SST SST at Palermo mean monthly SST
18
temperature the time of and δ O SHELL (°C) at Palermo and
18
(°C) collection (°C) temperature (°C) δ O SHELL temperature
November 2002 +1.38 18.6 20.7 +2.1 19.7 +1.1
December 2002 +2.04 15.7 16.9 +1.2 17.2 +1.5
January 2003 +1.94 16.1 15.4 −0.7 ns 15.4 −0.7 ns
February 2003 +2.46 13.9 14.6 +0.7 ns 14.1 +0.2 ns
March 2003 +2.37 14.3 15.5 +1.2 14.8 +0.5 ns
April 2003 +2.24 14.8 16.0 +1.2 15.9 +1.1
May 2003 +2.34 14.4 19.7 +5.3 20.6 +6.2
June 2003 +1.65 17.4 23.4 +6.0 24.6 +7.2
July 2003 +0.05 24.3 27.9 +3.6 28.0 +3.7
August 2003 +0.11 24.1 28.2 +4.1 28.4 +4.3
September 2003 −0.04 24.7 27.3 +2.6 25.4 +0.7 ns
October 2003 +0.94 20.5 23.1 +2.6 23.0 +2.5
November 2003 +1.34 18.7 19.4 +0.7 ns 20.0 +1.3
December 2003 +1.60 17.6 16.0 −1.6 17.3 −0.3 ns
January 2004 +2.32 14.5 14.5 0.0 ns 14.8 +0.3 ns
February 2004 +2.41 14.1 14.6 +0.5 ns 14.2 +0.1 ns
March 2004 +1.98 16.0 14.4 −1.6 14.6 −1.4
April 2004 +2.54 13.5 16.4 +2.9 15.9 +2.4
May 2004 +1.90 16.3 18.5 +2.2 18.1 +1.8
June 2004 +1.22 19.3 20.5 +1.2 22.3 +3.0
July 2004 +1.64 17.4 22.3 +4.9 26.1 +8.7
August 2004 +0.70 21.5 27.7 +6.2 27.2 +5.7
September 2004 +0.38 22.9 24.8 +1.9 25.7 +2.8
October 2004 +0.61 21.9 24.6 +2.7 23.6 +1.7

ns Not statistically significant

Fig. 7 Mazzaforno: fluctuations
over 16 months in surface sea-
water temperatures at the local-
ity (filled symbols), and
temperatures calculated from
18
δ O SHELL values (open sym-
bols). Small open symbols One
shell sampled in those months,
large open symbols with vertical
range bars two or three shells
sampled each month (the range
bars for October 2004 and Jan-
uary 2005 are very small and
not visible at this resolution)