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Project VERTIGO--Northwest Pacific

Project VERTIGO--Northwest Pacific. Kamchatka peninsula. Sea of Okhotsk. Bering Sea. Oyashio current. SEEDS. KNOT. Kuroshio current. Major Asian dust storms pass over the Northwest Pacific (April 2001). x K2. … though some years less than others (April 2005). x K2.

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Project VERTIGO--Northwest Pacific

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  1. Project VERTIGO--Northwest Pacific Kamchatka peninsula Sea of Okhotsk Bering Sea Oyashio current • SEEDS • KNOT Kuroshio current

  2. Major Asian dust storms pass over the Northwest Pacific (April 2001) x K2

  3. … though some years less than others (April 2005) x K2

  4. … though some years less than others (May 2005) x K2

  5. … though some years less than others (June 2005) x K2

  6. … and not when we were there (July 2005) x K2

  7. Satellite chlorophyll April-Sept 2005 April May June July Aug Sept

  8. Stn K2- 228Ra Stn K2- Particulate Mn Stn K2- Density Stn K2- Particulate Fe Peak in 228Ra and particulate Mn, Fe at 135m Data from Jim Bishop and Phoebe Lam Data from Jim Bishop and Phoebe Lam CTD data from cruise MULVFS#9 Data from Matt Charette Mn and 228Ra are both shelf tracers Fe from the shelf too? Which shelf?

  9. The 26.661-26.761 density layer intersects with both the Okhotsk shelf (left) and Kamchatka shelf (right), though Kamchatka waters have less far to go (Okhotsk needs to recirculate) Tying Okhotsk to K2 to Kamchatka shelves x K2 K2 x

  10. K1-K2-K3 Radium Subsurface Ra-228K1 < Ra-228K2< Ra-228K3 Argues against Kamchatka shelf as source Where is K3 getting its Ra, and is it feeding K2? van Beek P., François R., Honjo S., Reyss J.-L., Honda M., Charette M. JPAC project; Mirai cruise 2002; in prep.

  11. K1-K3 sigtheta x mirai cruise x

  12. K3 from Kuroshio mirai cruise x

  13. Project VERTIGO--Northwest Pacific • Cruise to “K2” in July-Aug 2005 • SEEDS • KNOT ? Stn KNOT- Nishioka et al. 03 Stn K2- MULVFS Fe

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