Alkenones and planktonic foraminifera oxygen isotope, Mg/Ca data from PASOM3

Here, we present results from a sediment core recovered from the central northern Arabian Sea. The region is currently under the influence of monsoon-induced upwelling and the associated development of an oxygen minimum zone. The sediment core PASOM 3 was retrieved from the Murray ridge in January 2009, from 1172 meters below the sea surface (mbss) depth (22°19.9’N and 63°36.0’E) during PASOM expedition 64PE301, with the R/V Pelagia.This dataset presents core depths (in cm), corresponding calibrated ages expressed as cal kyr BP, oxygen isotopic composition, and Mg/Ca ratio measured on planktonic foraminifera G. ruber together with alkenone paleothermometer UK37 index. It also includes the calculated sea surface temperature (SSTs) based on calibrations from Anand et al (2003) for Mg/Ca and Muller (1998) for UK37. The dataset covers the last 35 kyr.

本文报道了采自阿拉伯海中北部海域的沉积物岩芯的分析结果。该区域当前受季风驱动上升流影响，并伴随缺氧最小区（oxygen minimum zone）的发育。
沉积物岩芯PASOM 3于2009年1月，在PASOM科考航次64PE301期间，由R/V佩拉吉亚号（R/V Pelagia）从默里海脊获取，采样水深为海面以下1172米（meters below sea surface, mbss），采样点位坐标为22°19.9’N、63°36.0’E。
本数据集包含岩芯深度（单位：厘米）、以校准千年BP（calibrated kyr BP, cal kyr BP）为单位的对应校准年龄、在浮游有孔虫（planktonic foraminifera）G. ruber上测得的氧同位素组成与Mg/Ca比值，以及烯酮古温标UK37指数。
此外，数据集还包含基于Anand等（2003）的Mg/Ca校准方法、以及Muller（1998）的UK37校准方法计算得到的海表温度（sea surface temperature, SST）。
本数据集覆盖了过去35千年的沉积记录。