Uk´37-derived paleotemperature (Uk´37-SST) ranges between 11.1° and 21.9°C (Table T2; Fig. F1A). The temperature for the surface samples (between 0.06 and 0.37 mbsf*) were close to the annual mean SST at the site (~15.5°C) (Levitus and Boyer, 1994). Uk´37-SST is relatively higher within the intervals 1.90-2.26, 2.83, 3.69-8.85, 10.57-12.63, 13.80-14.38, 16.41, and 17.29-19.56 mbsf*, whereas it is relatively low within intervals 0.68-1.60, 2.57, 3.13-3.40, 9.13-10.28, 12.92-13.50, 14.67-16.12, 16.71-17.00, and below 19.86 mbsf*. The Org-C-normalized alkenone concentrations range between 56.8 and 1608.3 µg/g Org-C, with an average of 617.9 µg/g Org-C (Fig. F1B). The concentration is higher than the average in the intervals 3.69, 4.84-6.56, 7.13, 7.99-8.56, 9.99-12.34, 14.96-18.16, 19.56, and 20.16 mbsf*, whereas it tends to be lower in intervals 0.06-3.40, 3.98-4.55, 6.85, 7.41-7.70, 8.85-9.71, 12.63-14.67, 18.45-9.26, 19.86, and below 20.46 mbsf*. Uk´37-SST shows moderate positive correlation with alkenone concentration within the upper 14.0 mbsf*. Uk´37-SSTs are relatively stable below 14.0 mbsf*, whereas alkenone concentrations fluctuate significantly within the interval.
Org-C, nitrogen, and sulfur contents in acid-treated samples vary between 0.42 and 1.91, 0.04 and 0.21, and 0.06 and 171 wt%, respectively (Table T3; Fig. F1C). Org-C is high in the intervals 0.06-0.98, 4.84, 5.38, 6.27-7.70, 8.27-9.71, 10.85, 11.42-12.34, 15.25-15.54, and the lower part of 16.71 mbsf*, whereas it is relatively low in intervals 1.29-4.55, 5.12, 5.70-5.98, 7.99, 9.99-10.57, 11.14, 12.63-14.96, and 15.83-16.41 mbsf*. Org-C shows moderate positive correlation with Uk´37-SST within intervals 3.40-9.42 and 9.99-13.50 mbsf*. C/N ratio varies between 8.97 and 13.50 (Fig. F1D). C/N ratio for land-derived organic matter ranges from 20 to 80 or more (Meyers and Ishiwatari 1993), whereas marine-derived organic matter has lower C/N ratios between 6 and 9 (e.g., Müller, 1977). Thus, the C/N ratios of the analyzed samples suggest variable contributions of terrigenous organic matter.