The Bermuda Testbed Mooring (BTM)
The Bermuda Testbed Mooring (BTM), funded by the National Science Foundation, has been deployed since June 1994 and provides the oceanographic
community with a deep-water platform for developing, testing, calibrating, and intercomparing instruments. See our
BTM Participant Information website for an Announcement of Opportunity to Participate in the BTM program.
The mooring is located ~80 km southeast of Bermuda. Instruments are being used to collect meteorological and
spectral radiometric measurements from a buoy tower. Subsurface measurements include currents, temperature,
conductivity, several inherent and apparent optical properties, and nitrate and trace element concentrations.
Data have been sent to shore and to a nearby ship using a new inductive-link telemetry system. The high
temporal resolution, long-term data collected from the mooring provide important information concerning
episodic and periodic processes ranging in scale from minutes to years. For example, short nitrate pulses or
injections and associated biological events have been observed in the mooring data sets, but are not
resolvable in the shipboard data set. Evaluation of undersampling and aliasing effects characteristic of
infrequent sampling (i.e., monthly or often less frequent) are also enabled with these data sets.
BTM Mooring Diagram