Fig. 4From: Sea surface temperature proxies (alkenones, foraminiferal Mg/Ca, and planktonic foraminiferal assemblage) and their implications in the Okinawa TroughComparisons of observed temperatures (JODC database) with corresponding core-top temperatures reconstructed using various proxies. The investigated proxies are alkenones (a, b), Mg/Ca (c–e), and foraminiferal assemblages (f–i). Original references for the indicated cores are given in Table 1 Back to article page