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Expanded Development of a Float for the Measurement of Ambient Noise and Air-Sea Interaction Processes

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The goal of this program is to expand our capabilities to make remote and unattended measurements of the upper ocean and air-sea interface using autonomous, in-situ instrumentation that can be deployed in a range of conditions and locations. Measurements of the upper ocean and air-sea interface present a difficult challenge for both remote sensing techniques and in-situ moored or shipboard instrumentation. While satellite-based remote-sensing techniques generally lose accuracy in high sea-states or near land due to a lack of understanding of the physics of the parameter that is measured or land contamination in the received signal e.g. remotely sensed winds, fixed in-situ measurements are difficult to maintain due to the environmental loading placed on the instrumentation and survivability of moorings. Shipboard instrumentation in high sea-states is either too costly for long-term measurements or presents a danger to the personnel onboard the vessel. While moorings and surface buoys can be designed to withstand the rigors of the sea-surface during high sea states, the statistical nature of very high wind events such as hurricanes, typhoons, and large winter storms requires that moorings be deployed over long periods of time and in large spatial arrays in order to raise the probability of the instrumentation being in the right place and at the right time. The recent improvement of relocatable forecasting models of the ocean will now require rapid identification of initializing conditions for the model. Adaptive monitoring of the ocean anywhere on the globe will now be available through strategic placement of light-weight, low-cost instrumentation in regions of high interest. The objective of this program is to continue the development of a suite of sensors integrated into a class of low-cost instruments to enable these initializations as well as to develop a unique platform for scientific process studies.

Subject Categories:

  • Meteorology
  • Physical and Dynamic Oceanography
  • Hydrology, Limnology and Potamology
  • Acoustics

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