Deep-sea mixing along 40oS as seen in radium isotopes and actinium
Walter Geibert, Alan Hsieh, Raja Ganeshram, Gideon M Henderson
Vertical mixing constrained with actinium: Example from D357 (St.11)
Actinium Profiles from 40 S
Actinium and mixing in the South Atlantic
W E
A new method to determine 226Ra in water
Comparison of new method with traditional ϒ-spectrometry
226Ra [dpm]
signal on RadeCC
Very cheap and simple method to determine 226Ra in water
Valenti Rodellas- UA Barcelona (on Thursday)
Summary• Final measurement still stands out (planned for October-
November)
• Preliminary data show vertical mixing in the lower 1000m between ~0.5 and 10 cm2/s
• Data point to an additional source and lateral mixing in ~3000-3500 m- Other data?
• Evaluation has resulted a very promising method to measure 226Ra with a simple counting system.