NIOZ3: Independent Temperature Sensors Sampling Yearlong Data at a Rate of 1 Hz

Abstract

Some 110 independent sensors form the NIOZ3-thermistor ldquostringrdquo to study waves in the ocean interior sampling at a rate of 1 Hz during at least one year. The string operates without connecting cables between the newly designed sensors, which are programmed and synchronized via induction. The accuracy of previous custom-made high-sampling rate thermistor strings is maintained, being better than 1 mK. This is demonstrated here using data from three recent field trials, two above seamounts and one in the ocean interior that occasionally show vigorous (nonlinear) internal wave motions.