publication venue for Glaciation, erosion, and landscape evolution of Iceland 2007 On the interpretation of vertical gravity gradients produced by magmatic intrusions 2005 Airborne laser altimetry mapping of the Greenland ice sheet 2002 Aircraft laser altimetry measurement of elevation changes of the greenland ice sheet: technique and accuracy assessment 2002 ICESat's laser measurements of polar ice, atmosphere, ocean, and land 2002 Prospects for a truly portable absolute gravimeter 2001