Early Holocene methane records from Siple Dome, Antarctica

Below we present the early Holocene discrete CH4 dataset from Siple Dome (SDMA), Antarctica, measured at Oregon State University (OSU) and Seoul National University (SNU) by discrete wet extraction technique. Analytical method is described in Grachev et al. (2009) and Mitchell et al. (2011) for OSU data, and Yang et al. (2017) for SNU data. SDMA CH4 composite record was constructed by combining OSU data for 7.6 - 9.0 ka and SNU data for 9.0 - 11.6 ka to maximize temporal resolution. SDMA gas chronology was synchronized to Greenland Ice Core Chronology 2005 (GICC05) scale. For detailed description on synchronization and age uncertainty please refer to Yang et al. (2017).

本文提供的是来自南极西普尔冰穹（Siple Dome, SDMA）的早全新世离散甲烷（CH4）数据集，该数据集由俄勒冈州立大学（Oregon State University, OSU）与首尔国立大学（Seoul National University, SNU）采用离散湿萃取技术完成测定。OSU数据集的分析方法详见Grachev等人（2009）及Mitchell等人（2011）的研究成果，SNU数据集的分析方法则参见Yang等人（2017）的相关研究。SDMA甲烷复合记录通过整合7.6~9.0 ka的OSU数据集与9.0~11.6 ka的SNU数据集构建而成，以最大化时间分辨率。SDMA气体年代学已与格陵兰冰芯年代标尺2005（Greenland Ice Core Chronology 2005, GICC05）完成同步校准。有关年代学同步方法及年龄不确定性的详细说明，请参阅Yang等人（2017）的研究。