The HEBBLE II report : proceedings of the second annual workshop on the High Energy Benthic Boundary Layer Experiment held at the Keystone Center for Continuing Education, March 19-24, 1979

Abstract

In 1978, the first Keystone Conference addressed the scientific problems of sediment transport in a high energy flow such as the Western Boundary Undercurrent. Sedimentologists, physical oceanographers, geologists, optical oceanographers, biologists, and ocean engineers planned a program called the High Energy Benthic Boundary Layer Experiment (HEBBLE) to measure ocean floor bed-forms, sediment properties, turbulent flow structure, suspended sediment concentrations and fluxes, mixed layer thickness, outer scale velocity and horizontal gradients of density in a carefully surveyed site yet to be selected. While measurements were suggested, specific instruments were not identified to implement them. It was encouraging that the scientists participating in the first HEBBLE Conference wanted to continue to plan a multi-disciplinary experiment. Because of the Jet Propulsion Laboratory's experience in management of planetary science experiments, autonomous instrumentation, image processing and data handling, we invited them to develop our experimental plan. Conferences were held in September at Woods Hole and November, 1978 at JPL to develop the instrumental ensemble. JPL involvement was concentrated on the extended deployment part of HEBBLE: the 6-month experiment. The March 20-23, 1979 conference brought JPL engineers and managers, HEBBLE scientists and PI's, ONR and NASA program managers together in Keystone, Colorado for presentation and discussion of the JPL program plan. This report summarizes the conference and includes reports by subcommittees of the conference on measurements and data sampling.