Roosevelt Island Ice Core Density and Beta Count Data

Abstract: This data set measures the radioactive decay of nuclear material from Northern and Southern hemisphere nuclear testing. Firn cores were taken from three locations on Roosevelt Island, an ice dome within the Ross Ice Shelf, and were measured at increasing depth for density in kilograms per cubic meter, and for beta counts per hour per kilogram. The data were collected between November and December of 1997. Measurements were taken incrementally down to approximately 17 meters for each of the three cores. Data are available in text format via ftp.摘要：本数据集用于测量南北半球核试验产生的核材料的放射性衰变。研究人员从罗斯冰架内的冰穹——罗斯福岛的三个采样点位采集了粒雪芯，并按深度递增的顺序测量其密度（单位：千克每立方米）与每千克每小时的β计数。 数据采集于1997年11月至12月期间。对三个粒雪芯分别进行了逐层测量，最深至约17米处。数据集以文本格式通过文件传输协议（FTP）公开获取。