1. Geological Survey of Canada, Natural Resources Canada, 601 Booth St., Ottawa, Ontario K1A 0E8, Canada
2. Center for Earth Observation Science and Department of Environment and Geography, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
3. Department of Marine Sciences, University of Connecticut, 1080 Shennecossett Road, Groton, Connecticut 06340, United States
4. Universidad Metropolitana, Autopista Caracas Guarenas, Caracas 1073, Venezuela
5. Aix Marseille Université, CNRS/INSU, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO) UM 110, 13288, Marseille, France