TUTORIAL

HUT TUTORIAL Photogrammetry & Remote Sensing: Deformation Measurements Dr.techn.habil. Aleksey I.Sharov: SATELLITE RHEOLOGY OF ICE FIELDS “In order to prepare for specific conditions in an environment, one must determine the modes of motion in that environment” (Levis, Giuffrida 1989) 25.11.04 1. PREFACE / INTRODUCTION / MOTIVATION Historical background, basic definitions Study objects, rheological unknowns, data / knowledge gaps Need for rheological knowledge and models National and international programmes, relevant research projects Relevant remote sensing missions: post-operational, operational and ongoing systems 2. FUNDAMENTALS OF ICE RHEOLOGY Basic parameters of ice mechanics Surface elevation, ice thickness, freeboard Coordinate / reference systems Modes of ice flow, flow field, ice velocity and ice flux The condition of incompressibility Sea ice momentum equation Stresses and strain rates, Gordon law, Glenn law Dislocations in the ice cover (crevasses, cracks, bulges, ridges, rafting, fracturing etc.) Physical constants relevant to ice flow and deformation, their variability 3. SPACEBORNE SAR INTERFEROMETRY (INSAR) (IN)SAR fundamentals and basic concepts (SAR, SNR, et al.) INSAR geometry, technical parameters (IN)SAR equations INSAR operating modes and configurations Interferometric signal characteristics INSAR data processing – workflow INSAR processing techniques • complex correlation, ...