Long-term in situ chemical
analyzers—works in progress

Thomas Chapin, Ph.D.
Monterey Bay Aquarium Research Institute

Friday, March 19, 1999
12:00 Noon—Pacific Forum

chapin.jpg (8188 bytes)As marine scientists, we are acutely aware that the oceans are undersampled spatially and temporally. Our understanding of many fundamental ocean processes, such as the evolution of hydrothermal systems or the nutrient dynamics of the Equatorial Pacific, is limited by the lack of continuous in situ measurements of chemical species. With the development of satellite observations and mooring-mounted instrumentation, tremendous advances in the long-term continuous monitoring of biological and physical parameters have been achieved. However, long-term continuous monitoring of vital chemical parameters of an ecosystem, such as macro and micro nutrients and trace metals, has proven to be a very difficult task.

This talk will focus on my postdoctoral work at MBARI and discuss recent advances and ideas for the development of continuous long-term in situ chemical analyzers.

Topics will include:

Difficulties and strategies for long-term chemical monitoring
In situ determination of Fe in hydrothermal and benthic systems
Strategies for the development of a long-term, low-level Fe analyzer
Strategies for the development of a long-term, multi-nutrient analyzer

Next: Gas hydrate decomposition and carbonate precipitation on the Carolina Continental

Last updated: December 19, 2000