Preliminary results from BATS shallow station indicate a good agreement between labs with a standard deviation of 13% for Quartz filters (0.8 um) and 25% for Supor filters (0.45um). This variability includes an inter-filter variability of 10% and 17% for Quartz and Supor filters respectively. Additional experiments were also conducted during both the cruises to understand how other factors impact particle collection such as pump types, flow rates, volume filtered, filter types and nominal pore sizes. Total water samples with high and low Thorium activities were collected during the Pacific cruise from 4000m at Safe station and from surface water at Santa Barbara basin. Samples were acidified and homogenized before they were sub-sampled and distributed to different labs. Inter-calibration results for total Thorium-234 will be presented as well as new particulate data from the Pacific cruise.
|Title of host publication||Ocean Sciences Meeting February 22-26, 2010, Portland, Oregon|
|Publication status||Published - 2010|