Measuring Ocean Currents: Tools, Technologies, and Data

Measuring Ocean Currents: Tools, Technologies, and Data covers all major aspects of ocean current measurements in view of the implications of ocean currents on changing climate, increasing pollution levels, and offshore engineering activities. Although more than 70% of the Earth is covered by ocean, there is limited information on the countless fine- to large-scale water motions taking place within them. This book fills that information gap as the first work that summarizes the state-of-the-art methods and instruments used for surface, subsurface, and abyssal ocean current measurements.

Readers of this book will find a wealth of information on Lagrangian measurements, horizontal mapping, imaging, Eulerian measurements, and vertical profiling techniques. In addition, the book describes modern technologies for remote measurement of ocean currents and their signatures, including HF Doppler radar systems, satellite-borne sensors, ocean acoustic tomography, and more. Crucial aspects of ocean currents are described in detail as well, including dispersion of effluents discharged into the sea and transport of beneficial materials—as well as environmentally hazardous materials—from one region to another. The book highlights several important practical applications, showing how measurements relate to climate change and pollution levels, how they affect coastal and offshore engineering activities, and how they can aid in tsunami detection.

Coverage of measurement, mapping and profiling techniquesDescriptions of technologies for remote measurement of ocean currents and their signaturesReviews crucial aspects of ocean currents, including special emphasis on the planet-spanning thermohaline circulation, known as the ocean's "conveyor belt," and its crucial role in climate change

Preface Acknowledgments 1. Oceanic Currents and Their Implications 2. The History of Measuring Ocean Currents 3. Lagrangian Style Surface Current Measurements through Tracking of Surface Drifters 4. Remote Mapping of Sea Surface Currents Using HF Doppler Radar Networks 5. Imaging of Seawater Motion Signatures Using Remote Sensors 6. Lagrangian Style Subsurface Current Measurements through Tracking of Subsurface Drifters 7. Horizontally Integrated Remote Measurements of Ocean Currents Using Acoustic Tomography Techniques 8. Eulerian Style Measurements Incorporating Mechanical Sensors 9. Eulerian Style Measurements Incorporating Non-Mechanical Sensors 10. Vertical Profiling of Horizontal Currents Using Freely Sinking / Rising Probes 11. Vertical Profiling of Currents Using Acoustic Doppler Current Profilers (ADCPs) 12. Remote Measurements of Ocean Currents Using Satellite-Borne Altimeters 13. Conclusions