@article {elsberg2004depth, title = {Depth-and time-dependent vertical strain rates at Siple Dome, Antarctica}, journal = {Journal of Glaciology}, volume = {50}, number = {171}, year = {2004}, pages = {511{\textendash}521}, publisher = {International Glaciological Society}, author = {Elsberg, Daniel H and Harrison, William D and Zumberge, Mark A and Morack, John L and Erin C Pettit and Waddington, Edward D and Husmann, Eric} } @article {zumberge2002measurement, title = {Measurement of vertical strain and velocity at Siple Dome, Antarctica, with optical sensors}, journal = {Journal of Glaciology}, volume = {48}, number = {161}, year = {2002}, pages = {217{\textendash}225}, publisher = {International Glaciological Society}, author = {Zumberge, Mark A and Elsberg, Daniel H and Harrison, William D and Husmann, Eric and Morack, John L and Erin C Pettit and Waddington, Edwin D} }