Fluxes of largest volcanic peaks in the EDC sulfate record

An existing ice core sulfate dataset was processed to identify the largest volcanic eruption peaks of the last 203 kyr. The dataset used consisted of high resolution sulfate data (previously archived at https://www.ncdc.noaa.gov/paleo-search/study/31332), analysed by fast ion chromatography, from the EPICA Dome C ice core. To process the data, a background was removed, and fluxes of sulfate deposited were calculated for every peak above background, using a consistent method that corrects for ice accumulation rate and thinning. A threshold flux of 20 mg m⁻² yr⁻¹ has been used to ensure that only peaks of definite volcanic origin are listed. This dataset lists the depths, ages (AICC2012 age model) and fluxes of each peak with a flux > 20 mg m⁻² yr⁻¹.

本研究对现有冰芯硫酸盐数据集进行处理，以识别过去203千年内规模最大的火山喷发信号峰。所用数据集源自欧洲南极冰芯钻探计划（EPICA）Dome C冰芯的高分辨率硫酸盐数据，该数据通过快速离子色谱法完成分析，此前已归档于https://www.ncdc.noaa.gov/paleo-search/study/31332。为处理该数据，研究人员首先去除背景信号，随后采用统一校正方法对所有高于背景的信号峰计算其硫酸盐沉积通量，该方法可校正冰积累速率与冰体变薄效应。本研究设置20 mg·m⁻²·yr⁻¹的通量阈值，以确保仅收录明确源自火山活动的信号峰。本数据集列出了所有通量大于20 mg·m⁻²·yr⁻¹的信号峰的深度、年龄（基于AICC2012年代模型）及对应通量。