Airborne Geophysics and Precise Positioning -- Copyright -- Preface -- Contents -- Executive Summary -- INTRODUCTION -- SUMMARY OF RECOMMENDATIONS -- 1 Airborne Geophysics: A Powerful Tool for Studying the Earth -- INTRODUCTION -- Access -- Sampling -- Interdisciplinary Studies -- PRECISE POSITION CAPABILITIES AND REQUIREMENTS -- MEASURING THE EARTH'S GRAVITY FIELD -- MEASURING THE EARTH'S SURFACE TOPOGRAPHY -- VERY HIGH RESOLUTION STUDIES WITH AIRBORNE TECHNIQUES -- 2 Scientific Framework -- INTERDISCIPLINARY EARTH SCIENCE STUDIES AND AIRBORNE GEOPHYSICS -- Ice Dynamics and Sea Level Rise -- Erosion Processes and Landform Evolution -- Hydrologic Cycle -- CONTINENTAL GEODYNAMICS AND AIRBORNE GEOPHYSICS -- Active Tectonics -- Volcanology -- Regional Studies -- HIGH-RESOLUTION APPLICATIONS AND AIRBORNE GEOPHYSICS -- Resource Exploration -- Nuclear Verification -- GEODESY AND AIRBORNE GEOPHYSICS -- GLOBAL CHANGE MONITORING AND AIRBORNE GEOPHYSICS -- Monitoring Ice Sheets and Mountain Glaciers -- Monitoring Ocean Circulation -- Ecosystems -- Hydrology -- 3 Future Directions -- MEASUREMENT AND POSITIONING TECHNOLOGY -- Airborne Measurements of the Earth's Gravity Field -- Airborne Surface Topography Measurements -- KINEMATIC GPS TECHNOLOGY -- Positioning Technology -- Navigation -- Orientation -- Future Directions for Airborne GPS Technology -- AIRBORNE PLATFORMS -- 4 A Strategy for the Future -- Appendix A Effects of Selective Availability (SA) and Antispoofing (AS) -- Appendix B Conclusions from the Workshop on Airborne Geophysics -- Appendix C Workshop on Airborne Geophysics: The Agenda -- Appendix D Workshop on Airborne Geophysics: List of Participants -- Acronyms -- References.