RUSSELL, Andrew J.1, KNUDSEN, Óskar
2, TWEED, Fiona S.
3, MARREN, Philip M.
4, ROBERTS, Matthew J.
3, WAITT, Richard B.
5, RICE Jr, James W.
6 and RUSHMER, Lucy
1, (1)School of Earth Sciences and Geography, Keele Univ, Keele, Staffordshire, Keele, ST5 5BG, United Kingdom, (2)Glacial Geology, Klettur Consulting Engineers, Bildshöfða 12, Reykjavík, IS 112, Iceland, (3)Division of Geography, Staffordshire Univ, College Road, Stoke-on-Trent, ST4 2DE, United Kingdom, (4)School of Earth Sciences & Geography, Keele Univ, Keele, Staffordshire, ST5 5BG, United Kingdom, (5)Cascades Volcano Observatory, U.S. Geol Survey, 5400 MacArthur Blvd, Vancouver, WA 98661, (6)Lunar and Planetary Laboratory, Univ of Arizona, Tucson, AZ 85721, a.j.russell@keele.ac.uk, a.j.russell@keele.ac.uk