BADER, H. Apartment 17G, 2451 Bricknell Avenue, Miami, FL 33129, U.S.A.

BAKER, R. W. Departmentof Geology, LaFayette College, Easton, PA 18042, U.S.A.

BENTLEY, C. R. Geophysicaland Polar Research Center, 1215 W. Dayton Street, Madison, WI 53706, U.S.A.

BERNAS, V. V. LaboratoireChimie-Physique, Université Paris XI, F-91405 Orsay, France.

BERTIE, J. E. Departmentof Chemistry, University of Alberta, Edmonton, Alberta T6G QG2, Canada.

BILGRAM, J. H. Laboratoriumfur Festkörperphysik, Eidg. Technische Hochschule Zürich, CH-8093 Zürich, Switzerland.

BLOCK, M. R. Max-Planck Institut fur Kernphysik, 69 Heidelberg 1, Postfach 103980, Saupfercheckweg I Germany.

BONED, C. Laboratoirede Thermodynamique, Université de Pau et des Pays de I'Adour, F-64000 Pau, France.

BUDD, W. F. AntarcticDivision, Department of Science, Melbourne University, 568 St. Kilda Road, Melbourne, Victoria 3052, Australia.

BULLEMER, B. Hochschuleder Bundeswehr München, D-8014 Neubiberg, Federal Republic of Germany.

BUSER, O. Eidg. Institut fur Schnee- und Lawinenforschung, CH-7260 Weissfluhjoch, Davos, Switzerland.

CAMP, P. Departmentof Physics, University of Maine, Orono, ME 04473, U.S.A.

CAMPLIN, G. C. Departmentof Physics, Handsworth Grammar School, Grove Lane, Birmingham B21 9ET, England.

CLAUSSE, H. Laboratoirede Thermodynamique, University de Pau et des Pays de I'Adour, F-64000, Pau, France.

COLBECK, S. C. U.S. Army CRREL, Hanover, NH 03755, U.S.A.

COOPER, L. H. N. aQueens Gate Villas, Lipson, Plymouth PL4 7PM, England.

COUTURE, L. Université Paris VI, 35 rue Alain Chartier, F-75015 Paris, France.

DAVIDSON, D. W. Divisionof Chemistry, National Research Council, Ottawa, Ontario KIA 0R9, Canada.

DORNER, B. InstitutMax Von Laue-Paul Langevin, avenue des Martyrs, F-38042 Grenoble-cedex, France.

DUVAL, P. Laboratoirede Glaciologie, 2 rue Trés-Cloîtres, F-38031 Grenoble-cedex, France.

ELDRUP, M. ChemistryDepartment, Rise, National Laboratory, DK-4000 Roskilde, Denmark.

ENGELHARDT, H. Divisionof Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, U.S.A.

FAURE, P. Laboratoirede Spectrométrie Raman-Laser, Centre Universitaire de Savoie, B.P. 143, F-73011 Chambery-cedex, France.

GLEN, J. W. Departmentof Physics, University of Birmingham, P.O. Box 363, Birmingham B15 2TT, England.

GOODMAN, D. J. Physicsand Chemistry of Solids Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 oHE, England.

GRIBBON, P. W. F. PhysicsDepartment, University of St. Andrews, St. Andrews, Fife KYI6 9AL, Scotland.

GROSS, G. W. NewMexico Institute of Mines and Technology, Socorro, NM 87901, U.S.A.

HALE, B. N. CloudPhysics Research Center, University of Missouri-Rolla, Rolla, MO 65401, U.S.A.

HALLETT, J. DesertResearch Institute, Reno, NV 89507, U.S.A.

HAMMER, C. GeophysicalIsotope Laboratory, Københavns Universitet, Haraldsgade 6, DK.-2220 København N, Denmark.

HANLEY, T. O'D. CampionCollege, University of Regina, Regina S4S 0A2, Canada.

HIGASHI, A. Departmentof Applied Physics, Hokkaido University, Sapporo 060, Japan.

HOLDER, J. Institutfür allgemeine Metallkunde und Mctallphysik an der Rhein-Westf. Technishen Hochschule Aachen, Kopernikus-strasse 14, Aachen, Federal Republic of Germany.

HOMER, D. R. 43 Lutley Drive, Pedmore, Stourbridge, West Midlands DY9 oYQ, England.

HONDOH, T. Departmentof Applied Physics, Hokkaido University, Sapporo 060, Japan.

HUBMANN, M. Technisch-Chemisches Laboratorium Eidg. Technische Hochschule Zürich, Universitätstrasse 6, CH-8092 Zürich, Switzerland.

ITAGAKI, K. U.S. Army CRREL, Hanover, NH 03755, U.S.A.

JACCARD, C. Institut de Physique, Université de Neuchâtel, rue A.-L. Breguet 1, CH 2000 Neuchâtel, Switzerland.

JEZEK, K. 1215 W. Dayton Street, Madison, WI 53706, U.S.A.

JOHARI, G. P. GlaciologyDivision, Environment Canada, Ottawa, Ontario KIA 0E7, Canada.

JOHNSON, D. M. 60 Vivian Avenue, Wembley, Middlesex HA9 6RG, England.

JONES, S. J. GlaciologyDivision, Inland Waters Directorate, Environment Canada, Ottawa, Ontario KIA 0E7, Canada.

KAMB, B. Divisionof Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, U.S.A.

KASSNER, J. L. Universityof Missouri-Rolla, Rolla, MO 65401, U.S.A.

KENNEDY, J. M. EuropeanResearch Office, 223 Old Marylebone Road, London NWI 5TH, England.

KLINGER, J. Laboratoirede Glaciologie, 2 rue Trés-Cloîtres, F-78031 Grenoble-cedex, France.

KLUG, D. D. NationalResearch Council, Ottawa, Ontario KIA 0R9, Canada.

KOROTKEVICH, Y. S. Arcticand Antarctic Institute, Leningrad, U.S.S.R.

KUBO, Y. JapanBridge and Structure Institute, Zenkaren Building, 5-chome, Minami-Aoyama, Minato-ku, Tokyo, Japan.

LEVI, L. Ciudadde la Paz 2580, Buenos Aires, Argentina.

LILE, R. C. MeteorologyDepartment, University of Melbourne, Parkville, Victoria 3052, Australia.

LISTER, H. Departmentof Geography, University of Newcastle-upon-Tyne,. Newcastle-upon-Tyne NEI 7RU, England.

LOZOWSKI, E. Divisionof Mechanical Engineering, National Research Council,. Ottawa, Ontario KIA 0R6, Canada.

MACKENZIE, A. P. Departmentof Bioengineering, University of Washington, Seattle, WA 98195, U.S.A.

MAENO, N. Instituteof Low Temperature Science, Hokkaido University, Sapporo 060, Japan.

MAÏ, C. InstitutNational des Sciences Appliqués, Bat. 502 Physique, 20 avenue Albert Einstein, F-69621 Villeurbanne-cedex, France.

MATSUDA, M. Instituteof Low Temperature Science, Hokkaido University, Sapporo 060, Japan.

MAZZEGA, E. Istitutodi Fisica della Università, 41100 Modena, Italy.

MlZUNO, Y. Instituteof Low Temperature Science, Hokkaido University, Sapporo 060, Japan.

MOGENSEN, O. E. ChemistryDepartment, Risø National Laboratory, DK-4000 Roskilde, Denmark.

NAGLE, J. F. Departmentof Physics, Carnegie-Mellon University, Pittsburgh, PA 15213, U.S.A.

NOLL, G. Departmentof Physics, University of Birmingham, P.O. Box 363, Birmingham B15 2TT, England.

OTTO, R. V. PembrokeCollege, Cambridge, England.

PAREN, J. G. BritishAntarctic Survey, Madingley Road, Cambridge CB3 oET, England.

PATERSON, W. S. B. Departmentof Energy, Mines and Resources, 4th Floor, 880 Wellington Street, Ottawa, Ontario KIA 0E4, Canada.

PEDERSEN, O. B. MetallurgyDepartment, Risø National Laboratory, DK-4000 Roskilde, Denmark.

PENNINO, U. DELInstitute di Fisica della Università, 41100 Modena, Italy.

PEREZ, J. InstitutNational des Sciences Appliqués, Bat. 502 Physique, 20 avenue Albert Einstein, F-69621 Villeurbanne-cedex,

PLUMMER, P. L. M. CloudPhysics Research Center, University of Missouri-Roll a, Rolla, MO 65401, U.S.A.

PODZIMEK, J. Universityof Missouri-Rolla, Rolla, MO 65401, U.S.A.

PRINCE, R. H. Departmentof Physics, York University, Toronto, Ontario M3J IP3, Canada.

PRODI, F. IFA-CNR, Bologna, Italy.

QUERVAIN, M. DE Eidg. Institut fur Schnee- und Lawinenforschung, CH-7260 Weissfluhjoch, Davos, Switzerland.

RICE, S. A. JamesFranck Institute, University of Chicago, 5640 Ellis Avenue, Chicago, IL 60637, U.S.A.

RILEY, N. F. Departmentof Geography, University of Newcastle-upon-Tyne, Newcastle-upon-Tyne NEI 7RU, England.

Ross, R. G. Schoolof Mathematics and Physics, University of East Anglia, Norwich NR4 7TJ, England.

SHIMAOKA, K. PhysicsDepartment, Ritsumeikan University, Kita-ku, Kyoto 603, Japan.

SINHA, N. K. Divisionof Building Research, National Research Council of Canada, Ottawa, Ontario KIA 0R6, Canada.

STAUFFER, B. PhysikalischesInstitut, Universität Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.

SWITHINBANK, G. W. M. BritishAntarctic Survey, Madingley Road, Cambridge CB3 oET, England.

TAUBENBERGER, R. Laboratoriumfür Festkörperphysik, Eidg. Technische Hochschule Zürich, CH-8093 Zürich, Switzerland.

TUSIMA, K. Instituteof Low Temperature Science, Hokkaido University, Sapporo 060, Japan.

VALI, G. Departmentof Atmospheric Sciences, University of Wyoming, P.O. Box 3038, Laramie, WY 82071, U.S.A.

VASSOILLE, R. InstitutNational des Sciences Appliques, Bat. 502 Physique, 20 Avenue Albert Einstein, F-69621 Villeurbanne-cedex, France-

VERBERNE, J. B. Fleerde413, Amsterdam, Netherlands.

WALFORD, M. E. R. H. H. WillsPhysics Laboratory, Tyndall Avenue, Bristol BS8 ITL, England.

WATANABE, Z. Departmentof Physics, Fukushima University, Fukushima City 960, Japan.

WEICKMANN, H. K. AtmosphericPhysics and Chemistry Laboratory, NOAA Environmental Research Laboratories, Boulder, CO 80302, U.S.A.

WHALLEY, E. NationalResearch Council, Ottawa, Ontario KIA 0R9, Canada.

WHITWORTH, R. W. Departmentof Physics, University of Birmingham, P.O. Box 363, Birmingham B15 2TT, England.

WILSON, C. J. L. Schoolof Earth Sciences, University of Melbourne, Victoria 3052, Australia.

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