Journal Article
Marine Technology Society Journal, vol. 48, iss. 3, pp. 146-154, 2014
Authors
Chuan Tian, Zhiqun Daniel Deng, Jun Lu, Xiaoyang Xu, Wei Zhao, Ming Xu
Abstract
AbstractMonitoring seawater temperature is important to understanding evolving ocean processes. To monitor internal waves or ocean mixing, a large number of temperature loggers are typically mounted on subsurface mooring systems to obtain high-resolution temperature data
at different water depths. In this study, we redesigned and evaluated a compact, low-cost, self-contained, high-resolution and high-accuracy ocean temperature logger, the TC-1121. The newly designed TC-1121 logger is smaller and more robust, and its sampling interval can be automatically changed
by indicated events. The logger’s initial accuracy is ±0.002°C, and its effective resolution is about 0.0001°C. The drift error of all six TC-1121 temperature loggers during a 450-day experiment was less than ±0.002°C. They are being widely used in many mooring
systems to study internal wave and ocean mixing. The logger’s fundamental design, noise analysis, calibration, and drift test are discussed. A long-term sea trial in the South China Sea was completed successfully and demonstrated the effectiveness of the logger.
