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A 33.65-m-long IMAGES (MD982195) core with very high sedimentation rate (ca. 80 cm/kyr), retrieved from the northern part of the East China Sea, was analyzed at 10-cm intervals (about 125 years) for oxygen–carbon isotope of Globigerinoides ruber (sensu stricto), sea surface temperature (SST) from alkenones (U₃₇′^K), and principal component analysis of planktonic foraminiferal assemblage. The general pattern of the δ¹⁸O curve, resembling the alkenone SST curve, is similar to the standard open ocean oxygen isotope curve. It reveals many light δ¹⁸O peaks apparently corresponding to Dansgaard–Oeschger (D–O) cycles as observed in Greenland ice cores for the last 42 ka. The alkenone SST at the core top is 24 °C, which is close to the modern annual mean SST around the core site. On the other hand, SST during the last glacial maximum (LGM) was about 5 °C lower than that in the present day. Alkenone …