Accession Number:

ADA496100

Title:

Incorporation of Sensors into Autonomous Gliders for 4-D Measurement of Bio-optical and Chemical

Descriptive Note:

Corporate Author:

MAINE UNIV AT WALPOLE DARLING MARINE CENTER

Report Date:

2003-01-01

Pagination or Media Count:

6.0

Abstract:

The primary objectives of the overall NOPP project were to expand the operational capabilities of the autonomous underwater glider, Seaglider to extend its measurement capabilities to include biogeochemical variables, specifically dissolved oxygen, phytoplankton biomass, and suspended particle concentration and to demonstrate the power of this new autonomous mode of ocean observing. Seaglider can operate in both a transect mode or a station keeping mode. It moves horizontally and vertically using buoyancy and wings, diving as deep as 1000 meters, and transmitting data at the end of each dive cycle via Iridium satellite phone. The key to Seagliders ability to operate continuously for many months at a time is its efficient hydrodynamic shape. The development of the biogeochemical sensors was guided by the need for these sensors to be unobtrusive to minimize drag, small to conserve space, and power stingy to maximize battery lifetime. The specific objectives of the past year were to demonstrate the capability of Seaglider to maintain a persistent presence in waters off the coast of Washington State, USA, and to interpret the optical and chemical data collected by Seaglider in context of a four-dimensional view of ocean biogeochemistry.

Subject Categories:

  • Gliders and Parachutes
  • Physical and Dynamic Oceanography
  • Miscellaneous Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE