TY - JOUR T1 - Measurement of vertical strain and velocity at Siple Dome, Antarctica, with optical sensors JF - Journal of Glaciology Y1 - 2002 A1 - Zumberge, Mark A A1 - Elsberg, Daniel H A1 - Harrison, William D A1 - Husmann, Eric A1 - Morack, John L A1 - Erin C Pettit A1 - Waddington, Edwin D PB - International Glaciological Society VL - 48 ER -