ArcticNet 2011 Expedition of the CCGS Amundsen Data Report – Leg 2A (ArcticNet/IORVL) 11-25 August, 2011 Principle Investigators : Dr. David G. Barber Dr. Tim Papakyriakou Dr. Simon Prinsenberg Report prepared by : Matthew G. Asplin and Randall Scharien Table of Contents Executive Summary .......................................................................................................................................................... 3 ArcticNet 2011 Data Use Policy .................................................................................................................................... 4 Acknowledgements ........................................................................................................................................................... 5 List of Tables ....................................................................................................................................................................... 6 List of Figures ...................................................................................................................................................................... 7 SECTION ONE: INTRODUCTION .................................................................................................................................... 11 1.1 Preface ................................................................................................................................................................................................... 12 1.2 The Sea Ice Team .............................................................................................................................................................................. 15 1.3 Data Report Outline ......................................................................................................................................................................... 16 SECTION TWO: CRUISE SUMMARY .............................................................................................................................. 17 2.1 Introduction ........................................................................................................................................................................................ 18 2.2 Science Berths and Personnel ..................................................................................................................................................... 21 SECTION THREE: OCEAN DATA .................................................................................................................................... 22 3.1 Under­Ice Physical Observations ............................................................................................................................................... 23 3.1.1 Introduction .................................................................................................................................................................... 23 3.1.2 Methods ............................................................................................................................................................................ 23 3.1.3 Data and Data Visualizations ................................................................................................................................... 25 3.2 Ocean Conductivity­Temperature­Density (CTD) Profiles ............................................................................................ 32 3.2.1 Instrumentation ............................................................................................................................................................ 32 3.2.2 Data Summary................................................................................................................................................................ 34 3.3 Ocean Surface Roughness ............................................................................................................................................................. 36 3.3.1 Instrumentation: Meteorological Ocean Buoy .................................................................................................. 36 3.3.2 Data Summary................................................................................................................................................................ 37 3.3.2 Data Visualizations ....................................................................................................................................................... 38 SECTION FOUR: SEA ICE DATA ..................................................................................................................................... 39 4.1 Helicopter Electromagnetic Induction System Sea Ice Thickness Surveys ........................................................... 40 4.1.1 Survey Area ..................................................................................................................................................................... 40 4.1.2 Instrumentation ............................................................................................................................................................ 42 4.1.3 Survey Description ....................................................................................................................................................... 45 4.1.4 Data Samples (Ice floes B1.S1 and B1.S2) .......................................................................................................... 49 4.1.5 Data Samples (Regional sampling) ........................................................................................................................ 59 4.1.6 Conclusions ..................................................................................................................................................................... 65 4.1.7 Data Summary................................................................................................................................................................ 68 4.2 Surface Electromagnetic Induction System Sea Ice Thickness Surveys ................................................................... 70 4.2.1 Introduction .................................................................................................................................................................... 70 4.2.2 Data Summary................................................................................................................................................................ 70 4.3 Aerial Photographic Surveys ....................................................................................................................................................... 76 4.3.1 B1S1 ................................................................................................................................................................................... 76 4.3.2 B1S2 ................................................................................................................................................................................... 76 4.3.3: Data Summary .............................................................................................................................................................. 79 4.4 LiDAR Sea Ice Surface Surveys.................................................................................................................................................... 80 4.4.1 Rationale .......................................................................................................................................................................... 80 4.4.2 Technical Specifications of LiDAR System ......................................................................................................... 80 4.4.3 Methods ............................................................................................................................................................................ 80 4.4.4 Data Summary................................................................................................................................................................ 83 ArcticNet 2011 Expedition of the CCGS Amundsen : Data Report 1 4.5 Active Microwave Measurements (C­Band Scatterometer) .......................................................................................... 85 4.5.1 Instrumentation: C‐Band Scatterometer ............................................................................................................ 85 4.5.2 C‐Band Polarimetric Scattering .............................................................................................................................. 86 4.5.3 Scatterometer Data Summary ................................................................................................................................. 88 4.5.4 Data Visualizations ....................................................................................................................................................... 90 4.6 Sea Ice Physical Sampling (Ice Cores) ..................................................................................................................................... 91 4.6.1 Methodology ................................................................................................................................................................... 91 4.6.2 Physical Sampling Data Summary ........................................................................................................................