From April 24 to October 25, 2011, an Acoustic Doppler Velocimeter （ADV） continually running for 185 d was mounted on the smooth ridge at the edge of Monterey Canyon to observe turbulence in the bottom boundary layer. The ADV was set at 1.4 m above the bed bottom, continuously run for 1 min with a 2-minute interval with sampling frequency 64 Hz. The long-time continual observation is significant to reveal variations of turbulent characteristics and show some differences from the classic traditional tur- bulent theory. Eliminating the noise by the ＇Phase-Space Thresholding Method＇, rotating the coordinate and low-pass filtering the velocity were applied for data processing. This paper was mainly to estimate the turbulent kinetic energy dissipation rate by the iner- tial dissipation method, friction velocity, drag coefficient and significant periods of the turbulent characteristics with the ADV data. The results show that there is a strong, rotating bottom flow up to 0.398 ms-1 with predominantly semidiumal period and less sig- nificantly diurnal and semilunar period. The turbulent kinetic energy dissipation rate ranges from 1.09× 10-8W kg-1 to 6.62× 10-8W kg-1, which can vary with 2 or 3 orders of magnitude in one day. The daily averaged variations of friction velocity and drag coeffi- cient are 6.50×10-3-2.32× 10-2ms-1 and 6.30×10-3-4.36×10-2, respectively. All the characteristics have a remarkable semidiurnal period. In the bottom boundary layer with a rotating tide, the parameterized coefficients to describe ε-μ. and ε-Et relationships are much smaller than the traditional value.
