226Ra and 228Ra from SHEBA, Polar Star 2000 Expeditions (Excel) [Kadko, D.]

These data are from two different cruises, one the SHEBA cruise with data from 6/27/98 - 10/17/98, and the second a Polar Star Cruise during August of 2000. This dataset contains measurements of the water column activities of the naturally occuring isotopes 226Ra and 228Ra. Because 228Ra (T1/2= 5.77y) is derived through input from shelf sediments, it is an unambiguous marker of water that has been in contact with shelves. Its relative distribution in the shelf and basin water is therefore very valuable in assessing the degree of shelf-basin interaction. These data are in Excel format.

本数据集源于两次不同的航次，其一为 SHEBA 航次，数据采集时间范围为 1998 年 6 月 27 日至 10 月 17 日；其二为 2000 年 8 月的极星号航次。该数据集收录了天然存在的同位素 226Ra 和 228Ra 的水柱活动测量数据。由于 228Ra（半衰期 T1/2 为 5.77 年）系通过来自大陆架沉积物的输入产生，故可作为与大陆架接触过的水体的明确标志。因此，其在大陆架与盆地水体中的相对分布对于评估大陆架与盆地的相互作用程度具有重要价值。数据以 Excel 格式呈现。