1. National Oceanography Centre University of Southampton Waterfront Campus European Way Southampton SO14 3ZH UK
2. Institute for Marine and Antarctic Studies University of Tasmania PO Box 49 Hobart Tas. 7001 Australia
3. CSIRO Oceans and Atmosphere Hobart Tas. 7000 Australia
4. University of California, Irvine 321 Steinhaus Hall Irvine CA 92697‐2525 USA