© North-Holland Publishing Company, Amsterdam- Printed in The Netherlands A IRBORNE DUST ON THE ARCTIC PACK ICE, ITS COMPOSITION AND FALLOUT RATE

• Main Authors: Dennis A. Darby, Lloyd H. Burckle, Hunter College, Y. New York, David U Clark
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 1974
• Subjects: Arctic; Alaska
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.458.725; http://ic.ucsc.edu/~acr/BeringResources/Articles of interest/Central Artic/Darby et al 1976.pdf

Dust collected from snow samples on the Arctic pack ice approximately 500 km north of Alaska indicate lower fallout rates than previously reported for Arctic stations 1400 km to the east (3.3 and 14 ~g/cm 2 yr, respectively). Either the lower frequency of southerly (off-shore) near surface winds at our sample sites off Alaska or the unknown influx of dust with upper level air masses could account for the difference in dust fallout. Irregardless, the airborne dust contribution to Arctic deep-sea sediments north of Alaska amounts to 1 % or less. A consideration of the clay mineralogy and biogenous components of Arctic dust favors a global or distant source for most of the dust, especially the less than 2 ~m fraction. No obvious industrial components were detected in the dust. 1.