On May 30, 2008 a set of four pumps was deployed just north
of the Hawaiian Islands. This drifting array of pumps (attached to
long flexible vertical tubes) transfers nutrient-rich water from 300 m
depth up to the nutrient-poor surface waters. The objectives of this
experiment are to: 1) determine whether these pumps work, 2) assess if a phytoplankton bloom can be
stimulated in this oceanic region by the use of these pumps, and 3)
characterize the successional response of the pelagic microbial assemblage to these
To complement the pumps, three gliders were also deployed to
measure any changes in the water column. In their present
configuration the gliders dive
continuously to 500 m depth, returning to the surface to relay the
measurements via satellite after each dive. Measurements of both
physical and biological ocean properties are made (temperature,
salinity, pressure, oxygen, chlorophyll and scattering).
Near real-time satellite imagery also provides information about changes
in the surface waters.
This site presents figures of these measurements as they
are received in real-time.